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4 @settitle Pterodactyl Gnus 0.32 Manual
9 @c * Gnus: (gnus). The newsreader Gnus.
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264 \gnusauthor{by Lars Magne Ingebrigtsen}
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273 Copyright \copyright{} 1995,96,97,98 Free Software Foundation, Inc.
275 Permission is granted to make and distribute verbatim copies of
276 this manual provided the copyright notice and this permission notice
277 are preserved on all copies.
279 Permission is granted to copy and distribute modified versions of this
280 manual under the conditions for verbatim copying, provided that the
281 entire resulting derived work is distributed under the terms of a
282 permission notice identical to this one.
284 Permission is granted to copy and distribute translations of this manual
285 into another language, under the above conditions for modified versions.
294 This file documents Gnus, the GNU Emacs newsreader.
296 Copyright (C) 1995,96 Free Software Foundation, Inc.
298 Permission is granted to make and distribute verbatim copies of
299 this manual provided the copyright notice and this permission notice
300 are preserved on all copies.
303 Permission is granted to process this file through Tex and print the
304 results, provided the printed document carries copying permission
305 notice identical to this one except for the removal of this paragraph
306 (this paragraph not being relevant to the printed manual).
309 Permission is granted to copy and distribute modified versions of this
310 manual under the conditions for verbatim copying, provided also that the
311 entire resulting derived work is distributed under the terms of a
312 permission notice identical to this one.
314 Permission is granted to copy and distribute translations of this manual
315 into another language, under the above conditions for modified versions.
321 @title Pterodactyl Gnus 0.32 Manual
323 @author by Lars Magne Ingebrigtsen
326 @vskip 0pt plus 1filll
327 Copyright @copyright{} 1995,96,97 Free Software Foundation, Inc.
329 Permission is granted to make and distribute verbatim copies of
330 this manual provided the copyright notice and this permission notice
331 are preserved on all copies.
333 Permission is granted to copy and distribute modified versions of this
334 manual under the conditions for verbatim copying, provided that the
335 entire resulting derived work is distributed under the terms of a
336 permission notice identical to this one.
338 Permission is granted to copy and distribute translations of this manual
339 into another language, under the above conditions for modified versions.
348 @top The Gnus Newsreader
352 You can read news (and mail) from within Emacs by using Gnus. The news
353 can be gotten by any nefarious means you can think of---@sc{nntp}, local
354 spool or your mbox file. All at the same time, if you want to push your
357 This manual corresponds to Pterodactyl Gnus 0.32.
368 Gnus is the advanced, self-documenting, customizable, extensible
369 unreal-time newsreader for GNU Emacs.
371 Oops. That sounds oddly familiar, so let's start over again to avoid
372 being accused of plagiarism:
374 Gnus is a message-reading laboratory. It will let you look at just
375 about anything as if it were a newsgroup. You can read mail with it,
376 you can browse directories with it, you can @code{ftp} with it---you can
377 even read news with it!
379 Gnus tries to empower people who read news the same way Emacs empowers
380 people who edit text. Gnus sets no limits to what the user should be
381 allowed to do. Users are encouraged to extend Gnus to make it behave
382 like they want it to behave. A program should not control people;
383 people should be empowered to do what they want by using (or abusing)
390 * Starting Up:: Finding news can be a pain.
391 * The Group Buffer:: Selecting, subscribing and killing groups.
392 * The Summary Buffer:: Reading, saving and posting articles.
393 * The Article Buffer:: Displaying and handling articles.
394 * Composing Messages:: Information on sending mail and news.
395 * Select Methods:: Gnus reads all messages from various select methods.
396 * Scoring:: Assigning values to articles.
397 * Various:: General purpose settings.
398 * The End:: Farewell and goodbye.
399 * Appendices:: Terminology, Emacs intro, FAQ, History, Internals.
400 * Index:: Variable, function and concept index.
401 * Key Index:: Key Index.
405 @chapter Starting Gnus
410 If your system administrator has set things up properly, starting Gnus
411 and reading news is extremely easy---you just type @kbd{M-x gnus} in
414 @findex gnus-other-frame
415 @kindex M-x gnus-other-frame
416 If you want to start Gnus in a different frame, you can use the command
417 @kbd{M-x gnus-other-frame} instead.
419 If things do not go smoothly at startup, you have to twiddle some
420 variables in your @file{~/.gnus} file. This file is similar to
421 @file{~/.emacs}, but is read when gnus starts.
423 If you puzzle at any terms used in this manual, please refer to the
424 terminology section (@pxref{Terminology}).
427 * Finding the News:: Choosing a method for getting news.
428 * The First Time:: What does Gnus do the first time you start it?
429 * The Server is Down:: How can I read my mail then?
430 * Slave Gnusae:: You can have more than one Gnus active at a time.
431 * Fetching a Group:: Starting Gnus just to read a group.
432 * New Groups:: What is Gnus supposed to do with new groups?
433 * Startup Files:: Those pesky startup files---@file{.newsrc}.
434 * Auto Save:: Recovering from a crash.
435 * The Active File:: Reading the active file over a slow line Takes Time.
436 * Changing Servers:: You may want to move from one server to another.
437 * Startup Variables:: Other variables you might change.
441 @node Finding the News
442 @section Finding the News
445 @vindex gnus-select-method
447 The @code{gnus-select-method} variable says where Gnus should look for
448 news. This variable should be a list where the first element says
449 @dfn{how} and the second element says @dfn{where}. This method is your
450 native method. All groups not fetched with this method are
453 For instance, if the @samp{news.somewhere.edu} @sc{nntp} server is where
454 you want to get your daily dosage of news from, you'd say:
457 (setq gnus-select-method '(nntp "news.somewhere.edu"))
460 If you want to read directly from the local spool, say:
463 (setq gnus-select-method '(nnspool ""))
466 If you can use a local spool, you probably should, as it will almost
467 certainly be much faster.
469 @vindex gnus-nntpserver-file
471 @cindex @sc{nntp} server
472 If this variable is not set, Gnus will take a look at the
473 @code{NNTPSERVER} environment variable. If that variable isn't set,
474 Gnus will see whether @code{gnus-nntpserver-file}
475 (@file{/etc/nntpserver} by default) has any opinions on the matter. If
476 that fails as well, Gnus will try to use the machine running Emacs as an @sc{nntp} server. That's a long shot, though.
478 @vindex gnus-nntp-server
479 If @code{gnus-nntp-server} is set, this variable will override
480 @code{gnus-select-method}. You should therefore set
481 @code{gnus-nntp-server} to @code{nil}, which is what it is by default.
483 @vindex gnus-secondary-servers
484 You can also make Gnus prompt you interactively for the name of an
485 @sc{nntp} server. If you give a non-numerical prefix to @code{gnus}
486 (i.e., @kbd{C-u M-x gnus}), Gnus will let you choose between the servers
487 in the @code{gnus-secondary-servers} list (if any). You can also just
488 type in the name of any server you feel like visiting.
490 @findex gnus-group-browse-foreign-server
492 However, if you use one @sc{nntp} server regularly and are just
493 interested in a couple of groups from a different server, you would be
494 better served by using the @kbd{B} command in the group buffer. It will
495 let you have a look at what groups are available, and you can subscribe
496 to any of the groups you want to. This also makes @file{.newsrc}
497 maintenance much tidier. @xref{Foreign Groups}.
499 @vindex gnus-secondary-select-methods
501 A slightly different approach to foreign groups is to set the
502 @code{gnus-secondary-select-methods} variable. The select methods
503 listed in this variable are in many ways just as native as the
504 @code{gnus-select-method} server. They will also be queried for active
505 files during startup (if that's required), and new newsgroups that
506 appear on these servers will be subscribed (or not) just as native
509 For instance, if you use the @code{nnmbox} backend to read your mail, you
510 would typically set this variable to
513 (setq gnus-secondary-select-methods '((nnmbox "")))
518 @section The First Time
519 @cindex first time usage
521 If no startup files exist, Gnus will try to determine what groups should
522 be subscribed by default.
524 @vindex gnus-default-subscribed-newsgroups
525 If the variable @code{gnus-default-subscribed-newsgroups} is set, Gnus
526 will subscribe you to just those groups in that list, leaving the rest
527 killed. Your system administrator should have set this variable to
530 Since she hasn't, Gnus will just subscribe you to a few arbitrarily
531 picked groups (i.e., @samp{*.newusers}). (@dfn{Arbitrary} is defined
532 here as @dfn{whatever Lars thinks you should read}.)
534 You'll also be subscribed to the Gnus documentation group, which should
535 help you with most common problems.
537 If @code{gnus-default-subscribed-newsgroups} is @code{t}, Gnus will just
538 use the normal functions for handling new groups, and not do anything
542 @node The Server is Down
543 @section The Server is Down
544 @cindex server errors
546 If the default server is down, Gnus will understandably have some
547 problems starting. However, if you have some mail groups in addition to
548 the news groups, you may want to start Gnus anyway.
550 Gnus, being the trusting sort of program, will ask whether to proceed
551 without a native select method if that server can't be contacted. This
552 will happen whether the server doesn't actually exist (i.e., you have
553 given the wrong address) or the server has just momentarily taken ill
554 for some reason or other. If you decide to continue and have no foreign
555 groups, you'll find it difficult to actually do anything in the group
556 buffer. But, hey, that's your problem. Blllrph!
558 @findex gnus-no-server
559 @kindex M-x gnus-no-server
561 If you know that the server is definitely down, or you just want to read
562 your mail without bothering with the server at all, you can use the
563 @code{gnus-no-server} command to start Gnus. That might come in handy
564 if you're in a hurry as well. This command will not attempt to contact
565 your primary server---instead, it will just activate all groups on level
566 1 and 2. (You should preferably keep no native groups on those two
571 @section Slave Gnusae
574 You might want to run more than one Emacs with more than one Gnus at the
575 same time. If you are using different @file{.newsrc} files (e.g., if you
576 are using the two different Gnusae to read from two different servers),
577 that is no problem whatsoever. You just do it.
579 The problem appears when you want to run two Gnusae that use the same
582 To work around that problem some, we here at the Think-Tank at the Gnus
583 Towers have come up with a new concept: @dfn{Masters} and
584 @dfn{slaves}. (We have applied for a patent on this concept, and have
585 taken out a copyright on those words. If you wish to use those words in
586 conjunction with each other, you have to send $1 per usage instance to
587 me. Usage of the patent (@dfn{Master/Slave Relationships In Computer
588 Applications}) will be much more expensive, of course.)
590 Anyways, you start one Gnus up the normal way with @kbd{M-x gnus} (or
591 however you do it). Each subsequent slave Gnusae should be started with
592 @kbd{M-x gnus-slave}. These slaves won't save normal @file{.newsrc}
593 files, but instead save @dfn{slave files} that contain information only
594 on what groups have been read in the slave session. When a master Gnus
595 starts, it will read (and delete) these slave files, incorporating all
596 information from them. (The slave files will be read in the sequence
597 they were created, so the latest changes will have precedence.)
599 Information from the slave files has, of course, precedence over the
600 information in the normal (i.e., master) @code{.newsrc} file.
603 @node Fetching a Group
604 @section Fetching a Group
605 @cindex fetching a group
607 @findex gnus-fetch-group
608 It is sometimes convenient to be able to just say ``I want to read this
609 group and I don't care whether Gnus has been started or not''. This is
610 perhaps more useful for people who write code than for users, but the
611 command @code{gnus-fetch-group} provides this functionality in any case.
612 It takes the group name as a parameter.
620 @vindex gnus-check-new-newsgroups
621 If you are satisfied that you really never want to see any new groups,
622 you can set @code{gnus-check-new-newsgroups} to @code{nil}. This will
623 also save you some time at startup. Even if this variable is
624 @code{nil}, you can always subscribe to the new groups just by pressing
625 @kbd{U} in the group buffer (@pxref{Group Maintenance}). This variable
626 is @code{ask-server} by default. If you set this variable to
627 @code{always}, then Gnus will query the backends for new groups even
628 when you do the @kbd{g} command (@pxref{Scanning New Messages}).
631 * Checking New Groups:: Determining what groups are new.
632 * Subscription Methods:: What Gnus should do with new groups.
633 * Filtering New Groups:: Making Gnus ignore certain new groups.
637 @node Checking New Groups
638 @subsection Checking New Groups
640 Gnus normally determines whether a group is new or not by comparing the
641 list of groups from the active file(s) with the lists of subscribed and
642 dead groups. This isn't a particularly fast method. If
643 @code{gnus-check-new-newsgroups} is @code{ask-server}, Gnus will ask the
644 server for new groups since the last time. This is both faster and
645 cheaper. This also means that you can get rid of the list of killed
646 groups altogether, so you may set @code{gnus-save-killed-list} to
647 @code{nil}, which will save time both at startup, at exit, and all over.
648 Saves disk space, too. Why isn't this the default, then?
649 Unfortunately, not all servers support this command.
651 I bet I know what you're thinking now: How do I find out whether my
652 server supports @code{ask-server}? No? Good, because I don't have a
653 fail-safe answer. I would suggest just setting this variable to
654 @code{ask-server} and see whether any new groups appear within the next
655 few days. If any do, then it works. If none do, then it doesn't
656 work. I could write a function to make Gnus guess whether the server
657 supports @code{ask-server}, but it would just be a guess. So I won't.
658 You could @code{telnet} to the server and say @code{HELP} and see
659 whether it lists @samp{NEWGROUPS} among the commands it understands. If
660 it does, then it might work. (But there are servers that lists
661 @samp{NEWGROUPS} without supporting the function properly.)
663 This variable can also be a list of select methods. If so, Gnus will
664 issue an @code{ask-server} command to each of the select methods, and
665 subscribe them (or not) using the normal methods. This might be handy
666 if you are monitoring a few servers for new groups. A side effect is
667 that startup will take much longer, so you can meditate while waiting.
668 Use the mantra ``dingnusdingnusdingnus'' to achieve permanent bliss.
671 @node Subscription Methods
672 @subsection Subscription Methods
674 @vindex gnus-subscribe-newsgroup-method
675 What Gnus does when it encounters a new group is determined by the
676 @code{gnus-subscribe-newsgroup-method} variable.
678 This variable should contain a function. This function will be called
679 with the name of the new group as the only parameter.
681 Some handy pre-fab functions are:
685 @item gnus-subscribe-zombies
686 @vindex gnus-subscribe-zombies
687 Make all new groups zombies. This is the default. You can browse the
688 zombies later (with @kbd{A z}) and either kill them all off properly
689 (with @kbd{S z}), or subscribe to them (with @kbd{u}).
691 @item gnus-subscribe-randomly
692 @vindex gnus-subscribe-randomly
693 Subscribe all new groups in arbitrary order. This really means that all
694 new groups will be added at ``the top'' of the group buffer.
696 @item gnus-subscribe-alphabetically
697 @vindex gnus-subscribe-alphabetically
698 Subscribe all new groups in alphabetical order.
700 @item gnus-subscribe-hierarchically
701 @vindex gnus-subscribe-hierarchically
702 Subscribe all new groups hierarchically. The difference between this
703 function and @code{gnus-subscribe-alphabetically} is slight.
704 @code{gnus-subscribe-alphabetically} will subscribe new groups in a strictly
705 alphabetical fashion, while this function will enter groups into it's
706 hierarchy. So if you want to have the @samp{rec} hierarchy before the
707 @samp{comp} hierarchy, this function will not mess that configuration
708 up. Or something like that.
710 @item gnus-subscribe-interactively
711 @vindex gnus-subscribe-interactively
712 Subscribe new groups interactively. This means that Gnus will ask
713 you about @strong{all} new groups. The groups you choose to subscribe
714 to will be subscribed hierarchically.
716 @item gnus-subscribe-killed
717 @vindex gnus-subscribe-killed
722 @vindex gnus-subscribe-hierarchical-interactive
723 A closely related variable is
724 @code{gnus-subscribe-hierarchical-interactive}. (That's quite a
725 mouthful.) If this variable is non-@code{nil}, Gnus will ask you in a
726 hierarchical fashion whether to subscribe to new groups or not. Gnus
727 will ask you for each sub-hierarchy whether you want to descend the
730 One common mistake is to set the variable a few paragraphs above
731 (@code{gnus-subscribe-newsgroup-method}) to
732 @code{gnus-subscribe-hierarchical-interactive}. This is an error. This
733 will not work. This is ga-ga. So don't do it.
736 @node Filtering New Groups
737 @subsection Filtering New Groups
739 A nice and portable way to control which new newsgroups should be
740 subscribed (or ignored) is to put an @dfn{options} line at the start of
741 the @file{.newsrc} file. Here's an example:
744 options -n !alt.all !rec.all sci.all
747 @vindex gnus-subscribe-options-newsgroup-method
748 This line obviously belongs to a serious-minded intellectual scientific
749 person (or she may just be plain old boring), because it says that all
750 groups that have names beginning with @samp{alt} and @samp{rec} should
751 be ignored, and all groups with names beginning with @samp{sci} should
752 be subscribed. Gnus will not use the normal subscription method for
753 subscribing these groups.
754 @code{gnus-subscribe-options-newsgroup-method} is used instead. This
755 variable defaults to @code{gnus-subscribe-alphabetically}.
757 @vindex gnus-options-not-subscribe
758 @vindex gnus-options-subscribe
759 If you don't want to mess with your @file{.newsrc} file, you can just
760 set the two variables @code{gnus-options-subscribe} and
761 @code{gnus-options-not-subscribe}. These two variables do exactly the
762 same as the @file{.newsrc} @samp{options -n} trick. Both are regexps,
763 and if the new group matches the former, it will be unconditionally
764 subscribed, and if it matches the latter, it will be ignored.
766 @vindex gnus-auto-subscribed-groups
767 Yet another variable that meddles here is
768 @code{gnus-auto-subscribed-groups}. It works exactly like
769 @code{gnus-options-subscribe}, and is therefore really superfluous, but I
770 thought it would be nice to have two of these. This variable is more
771 meant for setting some ground rules, while the other variable is used
772 more for user fiddling. By default this variable makes all new groups
773 that come from mail backends (@code{nnml}, @code{nnbabyl},
774 @code{nnfolder}, @code{nnmbox}, and @code{nnmh}) subscribed. If you
775 don't like that, just set this variable to @code{nil}.
777 New groups that match this regexp are subscribed using
778 @code{gnus-subscribe-options-newsgroup-method}.
781 @node Changing Servers
782 @section Changing Servers
783 @cindex changing servers
785 Sometimes it is necessary to move from one @sc{nntp} server to another.
786 This happens very rarely, but perhaps you change jobs, or one server is
787 very flaky and you want to use another.
789 Changing the server is pretty easy, right? You just change
790 @code{gnus-select-method} to point to the new server?
794 Article numbers are not (in any way) kept synchronized between different
795 @sc{nntp} servers, and the only way Gnus keeps track of what articles
796 you have read is by keeping track of article numbers. So when you
797 change @code{gnus-select-method}, your @file{.newsrc} file becomes
800 Gnus provides a few functions to attempt to translate a @file{.newsrc}
801 file from one server to another. They all have one thing in
802 common---they take a looong time to run. You don't want to use these
803 functions more than absolutely necessary.
805 @kindex M-x gnus-change-server
806 @findex gnus-change-server
807 If you have access to both servers, Gnus can request the headers for all
808 the articles you have read and compare @code{Message-ID}s and map the
809 article numbers of the read articles and article marks. The @kbd{M-x
810 gnus-change-server} command will do this for all your native groups. It
811 will prompt for the method you want to move to.
813 @kindex M-x gnus-group-move-group-to-server
814 @findex gnus-group-move-group-to-server
815 You can also move individual groups with the @kbd{M-x
816 gnus-group-move-group-to-server} command. This is useful if you want to
817 move a (foreign) group from one server to another.
819 @kindex M-x gnus-group-clear-data-on-native-groups
820 @findex gnus-group-clear-data-on-native-groups
821 If you don't have access to both the old and new server, all your marks
822 and read ranges have become worthless. You can use the @kbd{M-x
823 gnus-group-clear-data-on-native-groups} command to clear out all data
824 that you have on your native groups. Use with caution.
828 @section Startup Files
829 @cindex startup files
834 Now, you all know about the @file{.newsrc} file. All subscription
835 information is traditionally stored in this file.
837 Things got a bit more complicated with @sc{gnus}. In addition to
838 keeping the @file{.newsrc} file updated, it also used a file called
839 @file{.newsrc.el} for storing all the information that didn't fit into
840 the @file{.newsrc} file. (Actually, it also duplicated everything in
841 the @file{.newsrc} file.) @sc{gnus} would read whichever one of these
842 files was the most recently saved, which enabled people to swap between
843 @sc{gnus} and other newsreaders.
845 That was kinda silly, so Gnus went one better: In addition to the
846 @file{.newsrc} and @file{.newsrc.el} files, Gnus also has a file called
847 @file{.newsrc.eld}. It will read whichever of these files that are most
848 recent, but it will never write a @file{.newsrc.el} file. You should
849 never delete the @file{.newsrc.eld} file---it contains much information
850 not stored in the @file{.newsrc} file.
852 @vindex gnus-save-newsrc-file
853 You can turn off writing the @file{.newsrc} file by setting
854 @code{gnus-save-newsrc-file} to @code{nil}, which means you can delete
855 the file and save some space, as well as exiting from Gnus faster.
856 However, this will make it impossible to use other newsreaders than
857 Gnus. But hey, who would want to, right?
859 @vindex gnus-save-killed-list
860 If @code{gnus-save-killed-list} (default @code{t}) is @code{nil}, Gnus
861 will not save the list of killed groups to the startup file. This will
862 save both time (when starting and quitting) and space (on disk). It
863 will also mean that Gnus has no record of what groups are new or old,
864 so the automatic new groups subscription methods become meaningless.
865 You should always set @code{gnus-check-new-newsgroups} to @code{nil} or
866 @code{ask-server} if you set this variable to @code{nil} (@pxref{New
867 Groups}). This variable can also be a regular expression. If that's
868 the case, remove all groups that do not match this regexp before
869 saving. This can be useful in certain obscure situations that involve
870 several servers where not all servers support @code{ask-server}.
872 @vindex gnus-startup-file
873 The @code{gnus-startup-file} variable says where the startup files are.
874 The default value is @file{~/.newsrc}, with the Gnus (El Dingo) startup
875 file being whatever that one is, with a @samp{.eld} appended.
877 @vindex gnus-save-newsrc-hook
878 @vindex gnus-save-quick-newsrc-hook
879 @vindex gnus-save-standard-newsrc-hook
880 @code{gnus-save-newsrc-hook} is called before saving any of the newsrc
881 files, while @code{gnus-save-quick-newsrc-hook} is called just before
882 saving the @file{.newsrc.eld} file, and
883 @code{gnus-save-standard-newsrc-hook} is called just before saving the
884 @file{.newsrc} file. The latter two are commonly used to turn version
885 control on or off. Version control is on by default when saving the
886 startup files. If you want to turn backup creation off, say something like:
889 (defun turn-off-backup ()
890 (set (make-local-variable 'backup-inhibited) t))
892 (add-hook 'gnus-save-quick-newsrc-hook 'turn-off-backup)
893 (add-hook 'gnus-save-standard-newsrc-hook 'turn-off-backup)
896 @vindex gnus-init-file
897 When Gnus starts, it will read the @code{gnus-site-init-file}
898 (@file{.../site-lisp/gnus} by default) and @code{gnus-init-file}
899 (@file{~/.gnus} by default) files. These are normal Emacs Lisp files
900 and can be used to avoid cluttering your @file{~/.emacs} and
901 @file{site-init} files with Gnus stuff. Gnus will also check for files
902 with the same names as these, but with @file{.elc} and @file{.el}
903 suffixes. In other words, if you have set @code{gnus-init-file} to
904 @file{~/.gnus}, it will look for @file{~/.gnus.elc}, @file{~/.gnus.el},
905 and finally @file{~/.gnus} (in this order).
914 Whenever you do something that changes the Gnus data (reading articles,
915 catching up, killing/subscribing groups), the change is added to a
916 special @dfn{dribble buffer}. This buffer is auto-saved the normal
917 Emacs way. If your Emacs should crash before you have saved the
918 @file{.newsrc} files, all changes you have made can be recovered from
921 If Gnus detects this file at startup, it will ask the user whether to
922 read it. The auto save file is deleted whenever the real startup file is
925 @vindex gnus-use-dribble-file
926 If @code{gnus-use-dribble-file} is @code{nil}, Gnus won't create and
927 maintain a dribble buffer. The default is @code{t}.
929 @vindex gnus-dribble-directory
930 Gnus will put the dribble file(s) in @code{gnus-dribble-directory}. If
931 this variable is @code{nil}, which it is by default, Gnus will dribble
932 into the directory where the @file{.newsrc} file is located. (This is
933 normally the user's home directory.) The dribble file will get the same
934 file permissions as the @code{.newsrc} file.
936 @vindex gnus-always-read-dribble-file
937 If @code{gnus-always-read-dribble-file} is non-@code{nil}, Gnus will
938 read the dribble file on startup without querying the user.
941 @node The Active File
942 @section The Active File
944 @cindex ignored groups
946 When Gnus starts, or indeed whenever it tries to determine whether new
947 articles have arrived, it reads the active file. This is a very large
948 file that lists all the active groups and articles on the server.
950 @vindex gnus-ignored-newsgroups
951 Before examining the active file, Gnus deletes all lines that match the
952 regexp @code{gnus-ignored-newsgroups}. This is done primarily to reject
953 any groups with bogus names, but you can use this variable to make Gnus
954 ignore hierarchies you aren't ever interested in. However, this is not
955 recommended. In fact, it's highly discouraged. Instead, @pxref{New
956 Groups} for an overview of other variables that can be used instead.
959 @c @code{nil} by default, and will slow down active file handling somewhat
960 @c if you set it to anything else.
962 @vindex gnus-read-active-file
964 The active file can be rather Huge, so if you have a slow network, you
965 can set @code{gnus-read-active-file} to @code{nil} to prevent Gnus from
966 reading the active file. This variable is @code{some} by default.
968 Gnus will try to make do by getting information just on the groups that
969 you actually subscribe to.
971 Note that if you subscribe to lots and lots of groups, setting this
972 variable to @code{nil} will probably make Gnus slower, not faster. At
973 present, having this variable @code{nil} will slow Gnus down
974 considerably, unless you read news over a 2400 baud modem.
976 This variable can also have the value @code{some}. Gnus will then
977 attempt to read active info only on the subscribed groups. On some
978 servers this is quite fast (on sparkling, brand new INN servers that
979 support the @code{LIST ACTIVE group} command), on others this isn't fast
980 at all. In any case, @code{some} should be faster than @code{nil}, and
981 is certainly faster than @code{t} over slow lines.
983 If this variable is @code{nil}, Gnus will ask for group info in total
984 lock-step, which isn't very fast. If it is @code{some} and you use an
985 @sc{nntp} server, Gnus will pump out commands as fast as it can, and
986 read all the replies in one swoop. This will normally result in better
987 performance, but if the server does not support the aforementioned
988 @code{LIST ACTIVE group} command, this isn't very nice to the server.
990 In any case, if you use @code{some} or @code{nil}, you should definitely
991 kill all groups that you aren't interested in to speed things up.
993 Note that this variable also affects active file retrieval from
994 secondary select methods.
997 @node Startup Variables
998 @section Startup Variables
1002 @item gnus-load-hook
1003 @vindex gnus-load-hook
1004 A hook run while Gnus is being loaded. Note that this hook will
1005 normally be run just once in each Emacs session, no matter how many
1006 times you start Gnus.
1008 @item gnus-before-startup-hook
1009 @vindex gnus-before-startup-hook
1010 A hook run after starting up Gnus successfully.
1012 @item gnus-startup-hook
1013 @vindex gnus-startup-hook
1014 A hook run as the very last thing after starting up Gnus
1016 @item gnus-started-hook
1017 @vindex gnus-started-hook
1018 A hook that is run as the very last thing after starting up Gnus
1021 @item gnus-started-hook
1022 @vindex gnus-started-hook
1023 A hook that is run after reading the @file{.newsrc} file(s), but before
1024 generating the group buffer.
1026 @item gnus-check-bogus-newsgroups
1027 @vindex gnus-check-bogus-newsgroups
1028 If non-@code{nil}, Gnus will check for and delete all bogus groups at
1029 startup. A @dfn{bogus group} is a group that you have in your
1030 @file{.newsrc} file, but doesn't exist on the news server. Checking for
1031 bogus groups can take quite a while, so to save time and resources it's
1032 best to leave this option off, and do the checking for bogus groups once
1033 in a while from the group buffer instead (@pxref{Group Maintenance}).
1035 @item gnus-inhibit-startup-message
1036 @vindex gnus-inhibit-startup-message
1037 If non-@code{nil}, the startup message won't be displayed. That way,
1038 your boss might not notice as easily that you are reading news instead
1039 of doing your job. Note that this variable is used before
1040 @file{.gnus.el} is loaded, so it should be set in @code{.emacs} instead.
1042 @item gnus-no-groups-message
1043 @vindex gnus-no-groups-message
1044 Message displayed by Gnus when no groups are available.
1046 @item gnus-play-startup-jingle
1047 @vindex gnus-play-startup-jingle
1048 If non-@code{nil}, play the Gnus jingle at startup.
1050 @item gnus-startup-jingle
1051 @vindex gnus-startup-jingle
1052 Jingle to be played if the above variable is non-@code{nil}. The
1053 default is @samp{Tuxedomoon.Jingle4.au}.
1058 @node The Group Buffer
1059 @chapter The Group Buffer
1060 @cindex group buffer
1062 The @dfn{group buffer} lists all (or parts) of the available groups. It
1063 is the first buffer shown when Gnus starts, and will never be killed as
1064 long as Gnus is active.
1068 \gnusfigure{The Group Buffer}{320}{
1069 \put(75,50){\epsfig{figure=tmp/group.ps,height=9cm}}
1070 \put(120,37){\makebox(0,0)[t]{Buffer name}}
1071 \put(120,38){\vector(1,2){10}}
1072 \put(40,60){\makebox(0,0)[r]{Mode line}}
1073 \put(40,58){\vector(1,0){30}}
1074 \put(200,28){\makebox(0,0)[t]{Native select method}}
1075 \put(200,26){\vector(-1,2){15}}
1081 * Group Buffer Format:: Information listed and how you can change it.
1082 * Group Maneuvering:: Commands for moving in the group buffer.
1083 * Selecting a Group:: Actually reading news.
1084 * Group Data:: Changing the info for a group.
1085 * Subscription Commands:: Unsubscribing, killing, subscribing.
1086 * Group Levels:: Levels? What are those, then?
1087 * Group Score:: A mechanism for finding out what groups you like.
1088 * Marking Groups:: You can mark groups for later processing.
1089 * Foreign Groups:: Creating and editing groups.
1090 * Group Parameters:: Each group may have different parameters set.
1091 * Listing Groups:: Gnus can list various subsets of the groups.
1092 * Sorting Groups:: Re-arrange the group order.
1093 * Group Maintenance:: Maintaining a tidy @file{.newsrc} file.
1094 * Browse Foreign Server:: You can browse a server. See what it has to offer.
1095 * Exiting Gnus:: Stop reading news and get some work done.
1096 * Group Topics:: A folding group mode divided into topics.
1097 * Misc Group Stuff:: Other stuff that you can to do.
1101 @node Group Buffer Format
1102 @section Group Buffer Format
1105 * Group Line Specification:: Deciding how the group buffer is to look.
1106 * Group Modeline Specification:: The group buffer modeline.
1107 * Group Highlighting:: Having nice colors in the group buffer.
1111 @node Group Line Specification
1112 @subsection Group Line Specification
1113 @cindex group buffer format
1115 The default format of the group buffer is nice and dull, but you can
1116 make it as exciting and ugly as you feel like.
1118 Here's a couple of example group lines:
1121 25: news.announce.newusers
1122 * 0: alt.fan.andrea-dworkin
1127 You can see that there are 25 unread articles in
1128 @samp{news.announce.newusers}. There are no unread articles, but some
1129 ticked articles, in @samp{alt.fan.andrea-dworkin} (see that little
1130 asterisk at the beginning of the line?).
1132 @vindex gnus-group-line-format
1133 You can change that format to whatever you want by fiddling with the
1134 @code{gnus-group-line-format} variable. This variable works along the
1135 lines of a @code{format} specification, which is pretty much the same as
1136 a @code{printf} specifications, for those of you who use (feh!) C.
1137 @xref{Formatting Variables}.
1139 @samp{%M%S%5y: %(%g%)\n} is the value that produced those lines above.
1141 There should always be a colon on the line; the cursor always moves to
1142 the colon after performing an operation. Nothing else is required---not
1143 even the group name. All displayed text is just window dressing, and is
1144 never examined by Gnus. Gnus stores all real information it needs using
1147 (Note that if you make a really strange, wonderful, spreadsheet-like
1148 layout, everybody will believe you are hard at work with the accounting
1149 instead of wasting time reading news.)
1151 Here's a list of all available format characters:
1156 An asterisk if the group only has marked articles.
1159 Whether the group is subscribed.
1162 Level of subscribedness.
1165 Number of unread articles.
1168 Number of dormant articles.
1171 Number of ticked articles.
1174 Number of read articles.
1177 Estimated total number of articles. (This is really @var{max-number}
1178 minus @var{min-number} plus 1.)
1181 Number of unread, unticked, non-dormant articles.
1184 Number of ticked and dormant articles.
1193 Newsgroup description.
1196 @samp{m} if moderated.
1199 @samp{(m)} if moderated.
1208 A string that looks like @samp{<%s:%n>} if a foreign select method is
1212 Indentation based on the level of the topic (@pxref{Group Topics}).
1215 @vindex gnus-group-uncollapsed-levels
1216 Short (collapsed) group name. The @code{gnus-group-uncollapsed-levels}
1217 variable says how many levels to leave at the end of the group name.
1218 The default is 1---this will mean that group names like
1219 @samp{gnu.emacs.gnus} will be shortened to @samp{g.emacs.gnus}.
1222 @vindex gnus-new-mail-mark
1224 @samp{%} (@code{gnus-new-mail-mark}) if there has arrived new mail to
1228 A string that says when you last read the group (@pxref{Group
1232 User defined specifier. The next character in the format string should
1233 be a letter. Gnus will call the function
1234 @code{gnus-user-format-function-}@samp{X}, where @samp{X} is the letter
1235 following @samp{%u}. The function will be passed a single dummy
1236 parameter as argument. The function should return a string, which will
1237 be inserted into the buffer just like information from any other
1242 All the ``number-of'' specs will be filled with an asterisk (@samp{*})
1243 if no info is available---for instance, if it is a non-activated foreign
1244 group, or a bogus native group.
1247 @node Group Modeline Specification
1248 @subsection Group Modeline Specification
1249 @cindex group modeline
1251 @vindex gnus-group-mode-line-format
1252 The mode line can be changed by setting
1253 @code{gnus-group-mode-line-format} (@pxref{Mode Line Formatting}). It
1254 doesn't understand that many format specifiers:
1258 The native news server.
1260 The native select method.
1264 @node Group Highlighting
1265 @subsection Group Highlighting
1266 @cindex highlighting
1267 @cindex group highlighting
1269 @vindex gnus-group-highlight
1270 Highlighting in the group buffer is controlled by the
1271 @code{gnus-group-highlight} variable. This is an alist with elements
1272 that look like @var{(form . face)}. If @var{form} evaluates to
1273 something non-@code{nil}, the @var{face} will be used on the line.
1275 Here's an example value for this variable that might look nice if the
1279 (face-spec-set 'my-group-face-1
1280 '((t (:foreground "Red" :bold t))))
1281 (face-spec-set 'my-group-face-2
1282 '((t (:foreground "SeaGreen" :bold t))))
1283 (face-spec-set 'my-group-face-3
1284 '((t (:foreground "SpringGreen" :bold t))))
1285 (face-spec-set 'my-group-face-4
1286 '((t (:foreground "SteelBlue" :bold t))))
1287 (face-spec-set 'my-group-face-5
1288 '((t (:foreground "SkyBlue" :bold t))))
1290 (setq gnus-group-highlight
1291 '(((> unread 200) . my-group-face-1)
1292 ((and (< level 3) (zerop unread)) . my-group-face-2)
1293 ((< level 3) . my-group-face-3)
1294 ((zerop unread) . my-group-face-4)
1295 (t . my-group-face-5)))
1298 Also @pxref{Faces and Fonts}.
1300 Variables that are dynamically bound when the forms are evaluated
1307 The number of unread articles in the group.
1311 Whether the group is a mail group.
1313 The level of the group.
1315 The score of the group.
1317 The number of ticked articles in the group.
1319 The total number of articles in the group. Or rather, MAX-NUMBER minus
1320 MIN-NUMBER plus one.
1322 When using the topic minor mode, this variable is bound to the current
1323 topic being inserted.
1326 When the forms are @code{eval}ed, point is at the beginning of the line
1327 of the group in question, so you can use many of the normal Gnus
1328 functions for snarfing info on the group.
1330 @vindex gnus-group-update-hook
1331 @findex gnus-group-highlight-line
1332 @code{gnus-group-update-hook} is called when a group line is changed.
1333 It will not be called when @code{gnus-visual} is @code{nil}. This hook
1334 calls @code{gnus-group-highlight-line} by default.
1337 @node Group Maneuvering
1338 @section Group Maneuvering
1339 @cindex group movement
1341 All movement commands understand the numeric prefix and will behave as
1342 expected, hopefully.
1348 @findex gnus-group-next-unread-group
1349 Go to the next group that has unread articles
1350 (@code{gnus-group-next-unread-group}).
1356 @findex gnus-group-prev-unread-group
1357 Go to the previous group that has unread articles
1358 (@code{gnus-group-prev-unread-group}).
1362 @findex gnus-group-next-group
1363 Go to the next group (@code{gnus-group-next-group}).
1367 @findex gnus-group-prev-group
1368 Go to the previous group (@code{gnus-group-prev-group}).
1372 @findex gnus-group-next-unread-group-same-level
1373 Go to the next unread group on the same (or lower) level
1374 (@code{gnus-group-next-unread-group-same-level}).
1378 @findex gnus-group-prev-unread-group-same-level
1379 Go to the previous unread group on the same (or lower) level
1380 (@code{gnus-group-prev-unread-group-same-level}).
1383 Three commands for jumping to groups:
1389 @findex gnus-group-jump-to-group
1390 Jump to a group (and make it visible if it isn't already)
1391 (@code{gnus-group-jump-to-group}). Killed groups can be jumped to, just
1396 @findex gnus-group-best-unread-group
1397 Jump to the unread group with the lowest level
1398 (@code{gnus-group-best-unread-group}).
1402 @findex gnus-group-first-unread-group
1403 Jump to the first group with unread articles
1404 (@code{gnus-group-first-unread-group}).
1407 @vindex gnus-group-goto-unread
1408 If @code{gnus-group-goto-unread} is @code{nil}, all the movement
1409 commands will move to the next group, not the next unread group. Even
1410 the commands that say they move to the next unread group. The default
1414 @node Selecting a Group
1415 @section Selecting a Group
1416 @cindex group selection
1421 @kindex SPACE (Group)
1422 @findex gnus-group-read-group
1423 Select the current group, switch to the summary buffer and display the
1424 first unread article (@code{gnus-group-read-group}). If there are no
1425 unread articles in the group, or if you give a non-numerical prefix to
1426 this command, Gnus will offer to fetch all the old articles in this
1427 group from the server. If you give a numerical prefix @var{N}, @var{N}
1428 determines the number of articles Gnus will fetch. If @var{N} is
1429 positive, Gnus fetches the @var{N} newest articles, if @var{N} is
1430 negative, Gnus fetches the @var{abs(N)} oldest articles.
1434 @findex gnus-group-select-group
1435 Select the current group and switch to the summary buffer
1436 (@code{gnus-group-select-group}). Takes the same arguments as
1437 @code{gnus-group-read-group}---the only difference is that this command
1438 does not display the first unread article automatically upon group
1442 @kindex M-RET (Group)
1443 @findex gnus-group-quick-select-group
1444 This does the same as the command above, but tries to do it with the
1445 minimum amount of fuzz (@code{gnus-group-quick-select-group}). No
1446 scoring/killing will be performed, there will be no highlights and no
1447 expunging. This might be useful if you're in a real hurry and have to
1448 enter some humongous group. If you give a 0 prefix to this command
1449 (i.e., @kbd{0 M-RET}), Gnus won't even generate the summary buffer,
1450 which is useful if you want to toggle threading before generating the
1451 summary buffer (@pxref{Summary Generation Commands}).
1454 @kindex M-SPACE (Group)
1455 @findex gnus-group-visible-select-group
1456 This is yet one more command that does the same as the @kbd{RET}
1457 command, but this one does it without expunging and hiding dormants
1458 (@code{gnus-group-visible-select-group}).
1461 @kindex M-C-RET (Group)
1462 @findex gnus-group-select-group-ephemerally
1463 Finally, this command selects the current group ephemerally without
1464 doing any processing of its contents
1465 (@code{gnus-group-select-group-ephemerally}). Even threading has been
1466 turned off. Everything you do in the group after selecting it in this
1467 manner will have no permanent effects.
1471 @vindex gnus-large-newsgroup
1472 The @code{gnus-large-newsgroup} variable says what Gnus should consider
1473 to be a big group. This is 200 by default. If the group has more
1474 (unread and/or ticked) articles than this, Gnus will query the user
1475 before entering the group. The user can then specify how many articles
1476 should be fetched from the server. If the user specifies a negative
1477 number (@code{-n}), the @code{n} oldest articles will be fetched. If it
1478 is positive, the @code{n} articles that have arrived most recently will
1481 @vindex gnus-select-group-hook
1482 @vindex gnus-auto-select-first
1483 @code{gnus-auto-select-first} control whether any articles are selected
1484 automatically when entering a group with the @kbd{SPACE} command.
1489 Don't select any articles when entering the group. Just display the
1490 full summary buffer.
1493 Select the first unread article when entering the group.
1496 Select the highest scored article in the group when entering the
1500 If you want to prevent automatic selection in some group (say, in a
1501 binary group with Huge articles) you can set this variable to @code{nil}
1502 in @code{gnus-select-group-hook}, which is called when a group is
1506 @node Subscription Commands
1507 @section Subscription Commands
1508 @cindex subscription
1516 @findex gnus-group-unsubscribe-current-group
1517 @c @icon{gnus-group-unsubscribe}
1518 Toggle subscription to the current group
1519 (@code{gnus-group-unsubscribe-current-group}).
1525 @findex gnus-group-unsubscribe-group
1526 Prompt for a group to subscribe, and then subscribe it. If it was
1527 subscribed already, unsubscribe it instead
1528 (@code{gnus-group-unsubscribe-group}).
1534 @findex gnus-group-kill-group
1535 @c @icon{gnus-group-kill-group}
1536 Kill the current group (@code{gnus-group-kill-group}).
1542 @findex gnus-group-yank-group
1543 Yank the last killed group (@code{gnus-group-yank-group}).
1546 @kindex C-x C-t (Group)
1547 @findex gnus-group-transpose-groups
1548 Transpose two groups (@code{gnus-group-transpose-groups}). This isn't
1549 really a subscription command, but you can use it instead of a
1550 kill-and-yank sequence sometimes.
1556 @findex gnus-group-kill-region
1557 Kill all groups in the region (@code{gnus-group-kill-region}).
1561 @findex gnus-group-kill-all-zombies
1562 Kill all zombie groups (@code{gnus-group-kill-all-zombies}).
1565 @kindex S C-k (Group)
1566 @findex gnus-group-kill-level
1567 Kill all groups on a certain level (@code{gnus-group-kill-level}).
1568 These groups can't be yanked back after killing, so this command should
1569 be used with some caution. The only time where this command comes in
1570 really handy is when you have a @file{.newsrc} with lots of unsubscribed
1571 groups that you want to get rid off. @kbd{S C-k} on level 7 will
1572 kill off all unsubscribed groups that do not have message numbers in the
1573 @file{.newsrc} file.
1577 Also @pxref{Group Levels}.
1587 @findex gnus-group-catchup-current
1588 @vindex gnus-group-catchup-group-hook
1589 @c @icon{gnus-group-catchup-current}
1590 Mark all unticked articles in this group as read
1591 (@code{gnus-group-catchup-current}).
1592 @code{gnus-group-catchup-group-hook} is called when catching up a group from
1597 @findex gnus-group-catchup-current-all
1598 Mark all articles in this group, even the ticked ones, as read
1599 (@code{gnus-group-catchup-current-all}).
1603 @findex gnus-group-clear-data
1604 Clear the data from the current group---nix out marks and the list of
1605 read articles (@code{gnus-group-clear-data}).
1607 @item M-x gnus-group-clear-data-on-native-groups
1608 @kindex M-x gnus-group-clear-data-on-native-groups
1609 @findex gnus-group-clear-data-on-native-groups
1610 If you have switched from one @sc{nntp} server to another, all your marks
1611 and read ranges have become worthless. You can use this command to
1612 clear out all data that you have on your native groups. Use with
1619 @section Group Levels
1623 All groups have a level of @dfn{subscribedness}. For instance, if a
1624 group is on level 2, it is more subscribed than a group on level 5. You
1625 can ask Gnus to just list groups on a given level or lower
1626 (@pxref{Listing Groups}), or to just check for new articles in groups on
1627 a given level or lower (@pxref{Scanning New Messages}).
1629 Remember: The higher the level of the group, the less important it is.
1635 @findex gnus-group-set-current-level
1636 Set the level of the current group. If a numeric prefix is given, the
1637 next @var{n} groups will have their levels set. The user will be
1638 prompted for a level.
1641 @vindex gnus-level-killed
1642 @vindex gnus-level-zombie
1643 @vindex gnus-level-unsubscribed
1644 @vindex gnus-level-subscribed
1645 Gnus considers groups from levels 1 to
1646 @code{gnus-level-subscribed} (inclusive) (default 5) to be subscribed,
1647 @code{gnus-level-subscribed} (exclusive) and
1648 @code{gnus-level-unsubscribed} (inclusive) (default 7) to be
1649 unsubscribed, @code{gnus-level-zombie} to be zombies (walking dead)
1650 (default 8) and @code{gnus-level-killed} to be killed (completely dead)
1651 (default 9). Gnus treats subscribed and unsubscribed groups exactly the
1652 same, but zombie and killed groups have no information on what articles
1653 you have read, etc, stored. This distinction between dead and living
1654 groups isn't done because it is nice or clever, it is done purely for
1655 reasons of efficiency.
1657 It is recommended that you keep all your mail groups (if any) on quite
1658 low levels (e.g. 1 or 2).
1660 If you want to play with the level variables, you should show some care.
1661 Set them once, and don't touch them ever again. Better yet, don't touch
1662 them at all unless you know exactly what you're doing.
1664 @vindex gnus-level-default-unsubscribed
1665 @vindex gnus-level-default-subscribed
1666 Two closely related variables are @code{gnus-level-default-subscribed}
1667 (default 3) and @code{gnus-level-default-unsubscribed} (default 6),
1668 which are the levels that new groups will be put on if they are
1669 (un)subscribed. These two variables should, of course, be inside the
1670 relevant valid ranges.
1672 @vindex gnus-keep-same-level
1673 If @code{gnus-keep-same-level} is non-@code{nil}, some movement commands
1674 will only move to groups of the same level (or lower). In
1675 particular, going from the last article in one group to the next group
1676 will go to the next group of the same level (or lower). This might be
1677 handy if you want to read the most important groups before you read the
1680 @vindex gnus-group-default-list-level
1681 All groups with a level less than or equal to
1682 @code{gnus-group-default-list-level} will be listed in the group buffer
1685 @vindex gnus-group-list-inactive-groups
1686 If @code{gnus-group-list-inactive-groups} is non-@code{nil}, non-active
1687 groups will be listed along with the unread groups. This variable is
1688 @code{t} by default. If it is @code{nil}, inactive groups won't be
1691 @vindex gnus-group-use-permanent-levels
1692 If @code{gnus-group-use-permanent-levels} is non-@code{nil}, once you
1693 give a level prefix to @kbd{g} or @kbd{l}, all subsequent commands will
1694 use this level as the ``work'' level.
1696 @vindex gnus-activate-level
1697 Gnus will normally just activate (i. e., query the server about) groups
1698 on level @code{gnus-activate-level} or less. If you don't want to
1699 activate unsubscribed groups, for instance, you might set this variable
1700 to 5. The default is 6.
1704 @section Group Score
1709 You would normally keep important groups on high levels, but that scheme
1710 is somewhat restrictive. Don't you wish you could have Gnus sort the
1711 group buffer according to how often you read groups, perhaps? Within
1714 This is what @dfn{group score} is for. You can assign a score to each
1715 group. You can then sort the group buffer based on this score.
1716 Alternatively, you can sort on score and then level. (Taken together,
1717 the level and the score is called the @dfn{rank} of the group. A group
1718 that is on level 4 and has a score of 1 has a higher rank than a group
1719 on level 5 that has a score of 300. (The level is the most significant
1720 part and the score is the least significant part.))
1722 @findex gnus-summary-bubble-group
1723 If you want groups you read often to get higher scores than groups you
1724 read seldom you can add the @code{gnus-summary-bubble-group} function to
1725 the @code{gnus-summary-exit-hook} hook. This will result (after
1726 sorting) in a bubbling sort of action. If you want to see that in
1727 action after each summary exit, you can add
1728 @code{gnus-group-sort-groups-by-rank} or
1729 @code{gnus-group-sort-groups-by-score} to the same hook, but that will
1730 slow things down somewhat.
1733 @node Marking Groups
1734 @section Marking Groups
1735 @cindex marking groups
1737 If you want to perform some command on several groups, and they appear
1738 subsequently in the group buffer, you would normally just give a
1739 numerical prefix to the command. Most group commands will then do your
1740 bidding on those groups.
1742 However, if the groups are not in sequential order, you can still
1743 perform a command on several groups. You simply mark the groups first
1744 with the process mark and then execute the command.
1752 @findex gnus-group-mark-group
1753 Set the mark on the current group (@code{gnus-group-mark-group}).
1759 @findex gnus-group-unmark-group
1760 Remove the mark from the current group
1761 (@code{gnus-group-unmark-group}).
1765 @findex gnus-group-unmark-all-groups
1766 Remove the mark from all groups (@code{gnus-group-unmark-all-groups}).
1770 @findex gnus-group-mark-region
1771 Mark all groups between point and mark (@code{gnus-group-mark-region}).
1775 @findex gnus-group-mark-buffer
1776 Mark all groups in the buffer (@code{gnus-group-mark-buffer}).
1780 @findex gnus-group-mark-regexp
1781 Mark all groups that match some regular expression
1782 (@code{gnus-group-mark-regexp}).
1785 Also @pxref{Process/Prefix}.
1787 @findex gnus-group-universal-argument
1788 If you want to execute some command on all groups that have been marked
1789 with the process mark, you can use the @kbd{M-&}
1790 (@code{gnus-group-universal-argument}) command. It will prompt you for
1791 the command to be executed.
1794 @node Foreign Groups
1795 @section Foreign Groups
1796 @cindex foreign groups
1798 Below are some group mode commands for making and editing general foreign
1799 groups, as well as commands to ease the creation of a few
1800 special-purpose groups. All these commands insert the newly created
1801 groups under point---@code{gnus-subscribe-newsgroup-method} is not
1808 @findex gnus-group-make-group
1809 @cindex making groups
1810 Make a new group (@code{gnus-group-make-group}). Gnus will prompt you
1811 for a name, a method and possibly an @dfn{address}. For an easier way
1812 to subscribe to @sc{nntp} groups, @pxref{Browse Foreign Server}.
1816 @findex gnus-group-rename-group
1817 @cindex renaming groups
1818 Rename the current group to something else
1819 (@code{gnus-group-rename-group}). This is valid only on some
1820 groups---mail groups mostly. This command might very well be quite slow
1826 @findex gnus-group-customize
1827 Customize the group parameters (@code{gnus-group-customize}).
1831 @findex gnus-group-edit-group-method
1832 @cindex renaming groups
1833 Enter a buffer where you can edit the select method of the current
1834 group (@code{gnus-group-edit-group-method}).
1838 @findex gnus-group-edit-group-parameters
1839 Enter a buffer where you can edit the group parameters
1840 (@code{gnus-group-edit-group-parameters}).
1844 @findex gnus-group-edit-group
1845 Enter a buffer where you can edit the group info
1846 (@code{gnus-group-edit-group}).
1850 @findex gnus-group-make-directory-group
1852 Make a directory group (@pxref{Directory Groups}). You will be prompted
1853 for a directory name (@code{gnus-group-make-directory-group}).
1858 @findex gnus-group-make-help-group
1859 Make the Gnus help group (@code{gnus-group-make-help-group}).
1863 @cindex (ding) archive
1864 @cindex archive group
1865 @findex gnus-group-make-archive-group
1866 @vindex gnus-group-archive-directory
1867 @vindex gnus-group-recent-archive-directory
1868 Make a Gnus archive group (@code{gnus-group-make-archive-group}). By
1869 default a group pointing to the most recent articles will be created
1870 (@code{gnus-group-recent-archive-directory}), but given a prefix, a full
1871 group will be created from @code{gnus-group-archive-directory}.
1875 @findex gnus-group-make-kiboze-group
1877 Make a kiboze group. You will be prompted for a name, for a regexp to
1878 match groups to be ``included'' in the kiboze group, and a series of
1879 strings to match on headers (@code{gnus-group-make-kiboze-group}).
1880 @xref{Kibozed Groups}.
1884 @findex gnus-group-enter-directory
1886 Read an arbitrary directory as if it were a newsgroup with the
1887 @code{nneething} backend (@code{gnus-group-enter-directory}).
1888 @xref{Anything Groups}.
1892 @findex gnus-group-make-doc-group
1893 @cindex ClariNet Briefs
1895 Make a group based on some file or other
1896 (@code{gnus-group-make-doc-group}). If you give a prefix to this
1897 command, you will be prompted for a file name and a file type.
1898 Currently supported types are @code{babyl}, @code{mbox}, @code{digest},
1899 @code{mmdf}, @code{news}, @code{rnews}, @code{clari-briefs},
1900 @code{rfc934}, @code{rfc822-forward}, and @code{forward}. If you run
1901 this command without a prefix, Gnus will guess at the file type.
1902 @xref{Document Groups}.
1906 @vindex gnus-useful-groups
1907 @findex gnus-group-make-useful-group
1908 Create one of the groups mentioned in @code{gnus-useful-groups}
1909 (@code{gnus-group-make-useful-group}).
1913 @findex gnus-group-make-web-group
1918 Make an ephemeral group based on a web search
1919 (@code{gnus-group-make-web-group}). If you give a prefix to this
1920 command, make a solid group instead. You will be prompted for the
1921 search engine type and the search string. Valid search engine types
1922 include @code{dejanews}, @code{altavista} and @code{reference}.
1923 @xref{Web Searches}.
1925 If you use the @code{dejanews} search engine, you can limit the search
1926 to a particular group by using a match string like
1927 @samp{~g alt.sysadmin.recovery shaving}.
1930 @kindex G DEL (Group)
1931 @findex gnus-group-delete-group
1932 This function will delete the current group
1933 (@code{gnus-group-delete-group}). If given a prefix, this function will
1934 actually delete all the articles in the group, and forcibly remove the
1935 group itself from the face of the Earth. Use a prefix only if you are
1936 absolutely sure of what you are doing. This command can't be used on
1937 read-only groups (like @code{nntp} group), though.
1941 @findex gnus-group-make-empty-virtual
1942 Make a new, fresh, empty @code{nnvirtual} group
1943 (@code{gnus-group-make-empty-virtual}). @xref{Virtual Groups}.
1947 @findex gnus-group-add-to-virtual
1948 Add the current group to an @code{nnvirtual} group
1949 (@code{gnus-group-add-to-virtual}). Uses the process/prefix convention.
1952 @xref{Select Methods} for more information on the various select
1955 @vindex gnus-activate-foreign-newsgroups
1956 If @code{gnus-activate-foreign-newsgroups} is a positive number,
1957 Gnus will check all foreign groups with this level or lower at startup.
1958 This might take quite a while, especially if you subscribe to lots of
1959 groups from different @sc{nntp} servers. Also @pxref{Group Levels};
1960 @code{gnus-activate-level} also affects activation of foreign
1964 @node Group Parameters
1965 @section Group Parameters
1966 @cindex group parameters
1968 The group parameters store information local to a particular group.
1969 Here's an example group parameter list:
1972 ((to-address . "ding@@gnus.org")
1976 We see that each element consists of a "dotted pair"---the thing before
1977 the dot is the key, while the thing after the dot is the value. All the
1978 parameters have this form @emph{except} local variable specs, which are
1979 not dotted pairs, but proper lists.
1981 The following group parameters can be used:
1986 Address used by when doing followups and new posts.
1989 (to-address . "some@@where.com")
1992 This is primarily useful in mail groups that represent closed mailing
1993 lists---mailing lists where it's expected that everybody that writes to
1994 the mailing list is subscribed to it. Since using this parameter
1995 ensures that the mail only goes to the mailing list itself, it means
1996 that members won't receive two copies of your followups.
1998 Using @code{to-address} will actually work whether the group is foreign
1999 or not. Let's say there's a group on the server that is called
2000 @samp{fa.4ad-l}. This is a real newsgroup, but the server has gotten
2001 the articles from a mail-to-news gateway. Posting directly to this
2002 group is therefore impossible---you have to send mail to the mailing
2003 list address instead.
2007 Address used when doing a @kbd{a} in that group.
2010 (to-list . "some@@where.com")
2013 It is totally ignored
2014 when doing a followup---except that if it is present in a news group,
2015 you'll get mail group semantics when doing @kbd{f}.
2017 If you do an @kbd{a} command in a mail group and you have neither a
2018 @code{to-list} group parameter nor a @code{to-address} group parameter,
2019 then a @code{to-list} group parameter will be added automatically upon
2020 sending the message if @code{gnus-add-to-list} is set to @code{t}.
2021 @vindex gnus-add-to-list
2023 If you do an @kbd{a} command in a mail group and you don't have a
2024 @code{to-list} group parameter, one will be added automatically upon
2025 sending the message.
2029 If the group parameter list has the element @code{(visible . t)},
2030 that group will always be visible in the Group buffer, regardless
2031 of whether it has any unread articles.
2033 @item broken-reply-to
2034 @cindex broken-reply-to
2035 Elements like @code{(broken-reply-to . t)} signals that @code{Reply-To}
2036 headers in this group are to be ignored. This can be useful if you're
2037 reading a mailing list group where the listserv has inserted
2038 @code{Reply-To} headers that point back to the listserv itself. This is
2039 broken behavior. So there!
2043 Elements like @code{(to-group . "some.group.name")} means that all
2044 posts in that group will be sent to @code{some.group.name}.
2048 If you have @code{(newsgroup . t)} in the group parameter list, Gnus
2049 will treat all responses as if they were responses to news articles.
2050 This can be useful if you have a mail group that's really a mirror of a
2055 If @code{(gcc-self . t)} is present in the group parameter list, newly
2056 composed messages will be @code{Gcc}'d to the current group. If
2057 @code{(gcc-self . none)} is present, no @code{Gcc:} header will be
2058 generated, if @code{(gcc-self . "string")} is present, this string will
2059 be inserted literally as a @code{gcc} header. This parameter takes
2060 precedence over any default @code{Gcc} rules as described later
2061 (@pxref{Archived Messages}).
2065 If the group parameter has an element that looks like @code{(auto-expire
2066 . t)}, all articles read will be marked as expirable. For an
2067 alternative approach, @pxref{Expiring Mail}.
2070 @cindex total-expire
2071 If the group parameter has an element that looks like
2072 @code{(total-expire . t)}, all read articles will be put through the
2073 expiry process, even if they are not marked as expirable. Use with
2074 caution. Unread, ticked and dormant articles are not eligible for
2079 @vindex nnmail-expiry-wait-function
2080 If the group parameter has an element that looks like @code{(expiry-wait
2081 . 10)}, this value will override any @code{nnmail-expiry-wait} and
2082 @code{nnmail-expiry-wait-function} when expiring expirable messages.
2083 The value can either be a number of days (not necessarily an integer) or
2084 the symbols @code{never} or @code{immediate}.
2087 @cindex score file group parameter
2088 Elements that look like @code{(score-file . "file")} will make
2089 @file{file} into the current score file for the group in question. All
2090 interactive score entries will be put into this file.
2093 @cindex adapt file group parameter
2094 Elements that look like @code{(adapt-file . "file")} will make
2095 @file{file} into the current adaptive file for the group in question.
2096 All adaptive score entries will be put into this file.
2099 When unsubscribing from a mailing list you should never send the
2100 unsubscription notice to the mailing list itself. Instead, you'd send
2101 messages to the administrative address. This parameter allows you to
2102 put the admin address somewhere convenient.
2105 Elements that look like @code{(display . MODE)} say which articles to
2106 display on entering the group. Valid values are:
2110 Display all articles, both read and unread.
2113 Display the default visible articles, which normally includes unread and
2118 Elements that look like @code{(comment . "This is a comment")}
2119 are arbitrary comments on the group. They are currently ignored by
2120 Gnus, but provide a place for you to store information on particular
2124 Elements that look like @code{(charset . iso-8859-1)} will make
2125 @code{iso-8859-1} the default charset; that is, the charset that will be
2126 used for all articles that do not specify a charset.
2128 @item @var{(variable form)}
2129 You can use the group parameters to set variables local to the group you
2130 are entering. If you want to turn threading off in @samp{news.answers},
2131 you could put @code{(gnus-show-threads nil)} in the group parameters of
2132 that group. @code{gnus-show-threads} will be made into a local variable
2133 in the summary buffer you enter, and the form @code{nil} will be
2134 @code{eval}ed there.
2136 This can also be used as a group-specific hook function, if you'd like.
2137 If you want to hear a beep when you enter a group, you could put
2138 something like @code{(dummy-variable (ding))} in the parameters of that
2139 group. @code{dummy-variable} will be set to the result of the
2140 @code{(ding)} form, but who cares?
2144 Use the @kbd{G p} command to edit group parameters of a group. You
2145 might also be interested in reading about topic parameters (@pxref{Topic
2149 @node Listing Groups
2150 @section Listing Groups
2151 @cindex group listing
2153 These commands all list various slices of the groups available.
2161 @findex gnus-group-list-groups
2162 List all groups that have unread articles
2163 (@code{gnus-group-list-groups}). If the numeric prefix is used, this
2164 command will list only groups of level ARG and lower. By default, it
2165 only lists groups of level five (i. e.,
2166 @code{gnus-group-default-list-level}) or lower (i.e., just subscribed
2173 @findex gnus-group-list-all-groups
2174 List all groups, whether they have unread articles or not
2175 (@code{gnus-group-list-all-groups}). If the numeric prefix is used,
2176 this command will list only groups of level ARG and lower. By default,
2177 it lists groups of level seven or lower (i.e., just subscribed and
2178 unsubscribed groups).
2182 @findex gnus-group-list-level
2183 List all unread groups on a specific level
2184 (@code{gnus-group-list-level}). If given a prefix, also list the groups
2185 with no unread articles.
2189 @findex gnus-group-list-killed
2190 List all killed groups (@code{gnus-group-list-killed}). If given a
2191 prefix argument, really list all groups that are available, but aren't
2192 currently (un)subscribed. This could entail reading the active file
2197 @findex gnus-group-list-zombies
2198 List all zombie groups (@code{gnus-group-list-zombies}).
2202 @findex gnus-group-list-matching
2203 List all unread, subscribed groups with names that match a regexp
2204 (@code{gnus-group-list-matching}).
2208 @findex gnus-group-list-all-matching
2209 List groups that match a regexp (@code{gnus-group-list-all-matching}).
2213 @findex gnus-group-list-active
2214 List absolutely all groups in the active file(s) of the
2215 server(s) you are connected to (@code{gnus-group-list-active}). This
2216 might very well take quite a while. It might actually be a better idea
2217 to do a @kbd{A M} to list all matching, and just give @samp{.} as the
2218 thing to match on. Also note that this command may list groups that
2219 don't exist (yet)---these will be listed as if they were killed groups.
2220 Take the output with some grains of salt.
2224 @findex gnus-group-apropos
2225 List all groups that have names that match a regexp
2226 (@code{gnus-group-apropos}).
2230 @findex gnus-group-description-apropos
2231 List all groups that have names or descriptions that match a regexp
2232 (@code{gnus-group-description-apropos}).
2236 @vindex gnus-permanently-visible-groups
2237 @cindex visible group parameter
2238 Groups that match the @code{gnus-permanently-visible-groups} regexp will
2239 always be shown, whether they have unread articles or not. You can also
2240 add the @code{visible} element to the group parameters in question to
2241 get the same effect.
2243 @vindex gnus-list-groups-with-ticked-articles
2244 Groups that have just ticked articles in it are normally listed in the
2245 group buffer. If @code{gnus-list-groups-with-ticked-articles} is
2246 @code{nil}, these groups will be treated just like totally empty
2247 groups. It is @code{t} by default.
2250 @node Sorting Groups
2251 @section Sorting Groups
2252 @cindex sorting groups
2254 @kindex C-c C-s (Group)
2255 @findex gnus-group-sort-groups
2256 @vindex gnus-group-sort-function
2257 The @kbd{C-c C-s} (@code{gnus-group-sort-groups}) command sorts the
2258 group buffer according to the function(s) given by the
2259 @code{gnus-group-sort-function} variable. Available sorting functions
2264 @item gnus-group-sort-by-alphabet
2265 @findex gnus-group-sort-by-alphabet
2266 Sort the group names alphabetically. This is the default.
2268 @item gnus-group-sort-by-real-name
2269 @findex gnus-group-sort-by-real-name
2270 Sort the group alphabetically on the real (unprefixed) group names.
2272 @item gnus-group-sort-by-level
2273 @findex gnus-group-sort-by-level
2274 Sort by group level.
2276 @item gnus-group-sort-by-score
2277 @findex gnus-group-sort-by-score
2278 Sort by group score. @xref{Group Score}.
2280 @item gnus-group-sort-by-rank
2281 @findex gnus-group-sort-by-rank
2282 Sort by group score and then the group level. The level and the score
2283 are, when taken together, the group's @dfn{rank}. @xref{Group Score}.
2285 @item gnus-group-sort-by-unread
2286 @findex gnus-group-sort-by-unread
2287 Sort by number of unread articles.
2289 @item gnus-group-sort-by-method
2290 @findex gnus-group-sort-by-method
2291 Sort alphabetically on the select method.
2296 @code{gnus-group-sort-function} can also be a list of sorting
2297 functions. In that case, the most significant sort key function must be
2301 There are also a number of commands for sorting directly according to
2302 some sorting criteria:
2306 @kindex G S a (Group)
2307 @findex gnus-group-sort-groups-by-alphabet
2308 Sort the group buffer alphabetically by group name
2309 (@code{gnus-group-sort-groups-by-alphabet}).
2312 @kindex G S u (Group)
2313 @findex gnus-group-sort-groups-by-unread
2314 Sort the group buffer by the number of unread articles
2315 (@code{gnus-group-sort-groups-by-unread}).
2318 @kindex G S l (Group)
2319 @findex gnus-group-sort-groups-by-level
2320 Sort the group buffer by group level
2321 (@code{gnus-group-sort-groups-by-level}).
2324 @kindex G S v (Group)
2325 @findex gnus-group-sort-groups-by-score
2326 Sort the group buffer by group score
2327 (@code{gnus-group-sort-groups-by-score}). @xref{Group Score}.
2330 @kindex G S r (Group)
2331 @findex gnus-group-sort-groups-by-rank
2332 Sort the group buffer by group rank
2333 (@code{gnus-group-sort-groups-by-rank}). @xref{Group Score}.
2336 @kindex G S m (Group)
2337 @findex gnus-group-sort-groups-by-method
2338 Sort the group buffer alphabetically by backend name
2339 (@code{gnus-group-sort-groups-by-method}).
2343 All the commands below obeys the process/prefix convention
2344 (@pxref{Process/Prefix}).
2346 When given a symbolic prefix (@pxref{Symbolic Prefixes}), all these
2347 commands will sort in reverse order.
2349 You can also sort a subset of the groups:
2353 @kindex G P a (Group)
2354 @findex gnus-group-sort-selected-groups-by-alphabet
2355 Sort the groups alphabetically by group name
2356 (@code{gnus-group-sort-selected-groups-by-alphabet}).
2359 @kindex G P u (Group)
2360 @findex gnus-group-sort-selected-groups-by-unread
2361 Sort the groups by the number of unread articles
2362 (@code{gnus-group-sort-selected-groups-by-unread}).
2365 @kindex G P l (Group)
2366 @findex gnus-group-sort-selected-groups-by-level
2367 Sort the groups by group level
2368 (@code{gnus-group-sort-selected-groups-by-level}).
2371 @kindex G P v (Group)
2372 @findex gnus-group-sort-selected-groups-by-score
2373 Sort the groups by group score
2374 (@code{gnus-group-sort-selected-groups-by-score}). @xref{Group Score}.
2377 @kindex G P r (Group)
2378 @findex gnus-group-sort-selected-groups-by-rank
2379 Sort the groups by group rank
2380 (@code{gnus-group-sort-selected-groups-by-rank}). @xref{Group Score}.
2383 @kindex G P m (Group)
2384 @findex gnus-group-sort-selected-groups-by-method
2385 Sort the groups alphabetically by backend name
2386 (@code{gnus-group-sort-selected-groups-by-method}).
2392 @node Group Maintenance
2393 @section Group Maintenance
2394 @cindex bogus groups
2399 @findex gnus-group-check-bogus-groups
2400 Find bogus groups and delete them
2401 (@code{gnus-group-check-bogus-groups}).
2405 @findex gnus-group-find-new-groups
2406 Find new groups and process them (@code{gnus-group-find-new-groups}).
2407 With 1 @kbd{C-u}, use the @code{ask-server} method to query the server
2408 for new groups. With 2 @kbd{C-u}'s, use most complete method possible
2409 to query the server for new groups, and subscribe the new groups as
2413 @kindex C-c C-x (Group)
2414 @findex gnus-group-expire-articles
2415 Run all expirable articles in the current group through the expiry
2416 process (if any) (@code{gnus-group-expire-articles}).
2419 @kindex C-c M-C-x (Group)
2420 @findex gnus-group-expire-all-groups
2421 Run all articles in all groups through the expiry process
2422 (@code{gnus-group-expire-all-groups}).
2427 @node Browse Foreign Server
2428 @section Browse Foreign Server
2429 @cindex foreign servers
2430 @cindex browsing servers
2435 @findex gnus-group-browse-foreign-server
2436 You will be queried for a select method and a server name. Gnus will
2437 then attempt to contact this server and let you browse the groups there
2438 (@code{gnus-group-browse-foreign-server}).
2441 @findex gnus-browse-mode
2442 A new buffer with a list of available groups will appear. This buffer
2443 will use the @code{gnus-browse-mode}. This buffer looks a bit (well,
2444 a lot) like a normal group buffer.
2446 Here's a list of keystrokes available in the browse mode:
2451 @findex gnus-group-next-group
2452 Go to the next group (@code{gnus-group-next-group}).
2456 @findex gnus-group-prev-group
2457 Go to the previous group (@code{gnus-group-prev-group}).
2460 @kindex SPACE (Browse)
2461 @findex gnus-browse-read-group
2462 Enter the current group and display the first article
2463 (@code{gnus-browse-read-group}).
2466 @kindex RET (Browse)
2467 @findex gnus-browse-select-group
2468 Enter the current group (@code{gnus-browse-select-group}).
2472 @findex gnus-browse-unsubscribe-current-group
2473 Unsubscribe to the current group, or, as will be the case here,
2474 subscribe to it (@code{gnus-browse-unsubscribe-current-group}).
2480 @findex gnus-browse-exit
2481 Exit browse mode (@code{gnus-browse-exit}).
2485 @findex gnus-browse-describe-briefly
2486 Describe browse mode briefly (well, there's not much to describe, is
2487 there) (@code{gnus-browse-describe-briefly}).
2492 @section Exiting Gnus
2493 @cindex exiting Gnus
2495 Yes, Gnus is ex(c)iting.
2500 @findex gnus-group-suspend
2501 Suspend Gnus (@code{gnus-group-suspend}). This doesn't really exit Gnus,
2502 but it kills all buffers except the Group buffer. I'm not sure why this
2503 is a gain, but then who am I to judge?
2507 @findex gnus-group-exit
2508 @c @icon{gnus-group-exit}
2509 Quit Gnus (@code{gnus-group-exit}).
2513 @findex gnus-group-quit
2514 Quit Gnus without saving the @file{.newsrc} files (@code{gnus-group-quit}).
2515 The dribble file will be saved, though (@pxref{Auto Save}).
2518 @vindex gnus-exit-gnus-hook
2519 @vindex gnus-suspend-gnus-hook
2520 @code{gnus-suspend-gnus-hook} is called when you suspend Gnus and
2521 @code{gnus-exit-gnus-hook} is called when you quit Gnus, while
2522 @code{gnus-after-exiting-gnus-hook} is called as the final item when
2527 If you wish to completely unload Gnus and all its adherents, you can use
2528 the @code{gnus-unload} command. This command is also very handy when
2529 trying to customize meta-variables.
2534 Miss Lisa Cannifax, while sitting in English class, felt her feet go
2535 numbly heavy and herself fall into a hazy trance as the boy sitting
2536 behind her drew repeated lines with his pencil across the back of her
2542 @section Group Topics
2545 If you read lots and lots of groups, it might be convenient to group
2546 them hierarchically according to topics. You put your Emacs groups over
2547 here, your sex groups over there, and the rest (what, two groups or so?)
2548 you put in some misc section that you never bother with anyway. You can
2549 even group the Emacs sex groups as a sub-topic to either the Emacs
2550 groups or the sex groups---or both! Go wild!
2554 \gnusfigure{Group Topics}{400}{
2555 \put(75,50){\epsfig{figure=tmp/group-topic.ps,height=9cm}}
2566 2: alt.religion.emacs
2569 0: comp.talk.emacs.recovery
2571 8: comp.binaries.fractals
2572 13: comp.sources.unix
2575 @findex gnus-topic-mode
2577 To get this @emph{fab} functionality you simply turn on (ooh!) the
2578 @code{gnus-topic} minor mode---type @kbd{t} in the group buffer. (This
2579 is a toggling command.)
2581 Go ahead, just try it. I'll still be here when you get back. La de
2582 dum... Nice tune, that... la la la... What, you're back? Yes, and now
2583 press @kbd{l}. There. All your groups are now listed under
2584 @samp{misc}. Doesn't that make you feel all warm and fuzzy? Hot and
2587 If you want this permanently enabled, you should add that minor mode to
2588 the hook for the group mode:
2591 (add-hook 'gnus-group-mode-hook 'gnus-topic-mode)
2595 * Topic Variables:: How to customize the topics the Lisp Way.
2596 * Topic Commands:: Interactive E-Z commands.
2597 * Topic Sorting:: Sorting each topic individually.
2598 * Topic Topology:: A map of the world.
2599 * Topic Parameters:: Parameters that apply to all groups in a topic.
2603 @node Topic Variables
2604 @subsection Topic Variables
2605 @cindex topic variables
2607 Now, if you select a topic, it will fold/unfold that topic, which is
2608 really neat, I think.
2610 @vindex gnus-topic-line-format
2611 The topic lines themselves are created according to the
2612 @code{gnus-topic-line-format} variable (@pxref{Formatting Variables}).
2625 Number of groups in the topic.
2627 Number of unread articles in the topic.
2629 Number of unread articles in the topic and all its subtopics.
2632 @vindex gnus-topic-indent-level
2633 Each sub-topic (and the groups in the sub-topics) will be indented with
2634 @code{gnus-topic-indent-level} times the topic level number of spaces.
2637 @vindex gnus-topic-mode-hook
2638 @code{gnus-topic-mode-hook} is called in topic minor mode buffers.
2640 @vindex gnus-topic-display-empty-topics
2641 The @code{gnus-topic-display-empty-topics} says whether to display even
2642 topics that have no unread articles in them. The default is @code{t}.
2645 @node Topic Commands
2646 @subsection Topic Commands
2647 @cindex topic commands
2649 When the topic minor mode is turned on, a new @kbd{T} submap will be
2650 available. In addition, a few of the standard keys change their
2651 definitions slightly.
2657 @findex gnus-topic-create-topic
2658 Prompt for a new topic name and create it
2659 (@code{gnus-topic-create-topic}).
2663 @findex gnus-topic-move-group
2664 Move the current group to some other topic
2665 (@code{gnus-topic-move-group}). This command uses the process/prefix
2666 convention (@pxref{Process/Prefix}).
2670 @findex gnus-topic-copy-group
2671 Copy the current group to some other topic
2672 (@code{gnus-topic-copy-group}). This command uses the process/prefix
2673 convention (@pxref{Process/Prefix}).
2677 @findex gnus-topic-remove-group
2678 Remove a group from the current topic (@code{gnus-topic-remove-group}).
2679 This command is mainly useful if you have the same group in several
2680 topics and wish to remove it from one of the topics. You may also
2681 remove a group from all topics, but in that case, Gnus will add it to
2682 the root topic the next time you start Gnus. In fact, all new groups
2683 (which, naturally, don't belong to any topic) will show up in the root
2686 This command uses the process/prefix convention
2687 (@pxref{Process/Prefix}).
2691 @findex gnus-topic-move-matching
2692 Move all groups that match some regular expression to a topic
2693 (@code{gnus-topic-move-matching}).
2697 @findex gnus-topic-copy-matching
2698 Copy all groups that match some regular expression to a topic
2699 (@code{gnus-topic-copy-matching}).
2703 @findex gnus-topic-toggle-display-empty-topics
2704 Toggle hiding empty topics
2705 (@code{gnus-topic-toggle-display-empty-topics}).
2709 @findex gnus-topic-mark-topic
2710 Mark all groups in the current topic with the process mark
2711 (@code{gnus-topic-mark-topic}).
2714 @kindex T M-# (Topic)
2715 @findex gnus-topic-unmark-topic
2716 Remove the process mark from all groups in the current topic
2717 (@code{gnus-topic-unmark-topic}).
2721 @findex gnus-topic-select-group
2723 Either select a group or fold a topic (@code{gnus-topic-select-group}).
2724 When you perform this command on a group, you'll enter the group, as
2725 usual. When done on a topic line, the topic will be folded (if it was
2726 visible) or unfolded (if it was folded already). So it's basically a
2727 toggling command on topics. In addition, if you give a numerical
2728 prefix, group on that level (and lower) will be displayed.
2732 @kindex T TAB (Topic)
2734 @findex gnus-topic-indent
2735 ``Indent'' the current topic so that it becomes a sub-topic of the
2736 previous topic (@code{gnus-topic-indent}). If given a prefix,
2737 ``un-indent'' the topic instead.
2740 @kindex M-TAB (Topic)
2741 @findex gnus-topic-unindent
2742 ``Un-indent'' the current topic so that it becomes a sub-topic of the
2743 parent of its current parent (@code{gnus-topic-unindent}).
2747 @findex gnus-topic-kill-group
2748 Kill a group or topic (@code{gnus-topic-kill-group}). All groups in the
2749 topic will be removed along with the topic.
2753 @findex gnus-topic-yank-group
2754 Yank the previously killed group or topic
2755 (@code{gnus-topic-yank-group}). Note that all topics will be yanked
2760 @findex gnus-topic-rename
2761 Rename a topic (@code{gnus-topic-rename}).
2764 @kindex T DEL (Topic)
2765 @findex gnus-topic-delete
2766 Delete an empty topic (@code{gnus-topic-delete}).
2770 @findex gnus-topic-list-active
2771 List all groups that Gnus knows about in a topics-ified way
2772 (@code{gnus-topic-list-active}).
2776 @findex gnus-topic-edit-parameters
2777 @cindex group parameters
2778 @cindex topic parameters
2780 Edit the topic parameters (@code{gnus-topic-edit-parameters}).
2781 @xref{Topic Parameters}.
2787 @subsection Topic Sorting
2788 @cindex topic sorting
2790 You can sort the groups in each topic individually with the following
2796 @kindex T S a (Topic)
2797 @findex gnus-topic-sort-groups-by-alphabet
2798 Sort the current topic alphabetically by group name
2799 (@code{gnus-topic-sort-groups-by-alphabet}).
2802 @kindex T S u (Topic)
2803 @findex gnus-topic-sort-groups-by-unread
2804 Sort the current topic by the number of unread articles
2805 (@code{gnus-topic-sort-groups-by-unread}).
2808 @kindex T S l (Topic)
2809 @findex gnus-topic-sort-groups-by-level
2810 Sort the current topic by group level
2811 (@code{gnus-topic-sort-groups-by-level}).
2814 @kindex T S v (Topic)
2815 @findex gnus-topic-sort-groups-by-score
2816 Sort the current topic by group score
2817 (@code{gnus-topic-sort-groups-by-score}). @xref{Group Score}.
2820 @kindex T S r (Topic)
2821 @findex gnus-topic-sort-groups-by-rank
2822 Sort the current topic by group rank
2823 (@code{gnus-topic-sort-groups-by-rank}). @xref{Group Score}.
2826 @kindex T S m (Topic)
2827 @findex gnus-topic-sort-groups-by-method
2828 Sort the current topic alphabetically by backend name
2829 (@code{gnus-topic-sort-groups-by-method}).
2833 @xref{Sorting Groups} for more information about group sorting.
2836 @node Topic Topology
2837 @subsection Topic Topology
2838 @cindex topic topology
2841 So, let's have a look at an example group buffer:
2847 2: alt.religion.emacs
2850 0: comp.talk.emacs.recovery
2852 8: comp.binaries.fractals
2853 13: comp.sources.unix
2856 So, here we have one top-level topic (@samp{Gnus}), two topics under
2857 that, and one sub-topic under one of the sub-topics. (There is always
2858 just one (1) top-level topic). This topology can be expressed as
2863 (("Emacs -- I wuw it!" visible)
2864 (("Naughty Emacs" visible)))
2868 @vindex gnus-topic-topology
2869 This is in fact how the variable @code{gnus-topic-topology} would look
2870 for the display above. That variable is saved in the @file{.newsrc.eld}
2871 file, and shouldn't be messed with manually---unless you really want
2872 to. Since this variable is read from the @file{.newsrc.eld} file,
2873 setting it in any other startup files will have no effect.
2875 This topology shows what topics are sub-topics of what topics (right),
2876 and which topics are visible. Two settings are currently
2877 allowed---@code{visible} and @code{invisible}.
2880 @node Topic Parameters
2881 @subsection Topic Parameters
2882 @cindex topic parameters
2884 All groups in a topic will inherit group parameters from the parent (and
2885 ancestor) topic parameters. All valid group parameters are valid topic
2886 parameters (@pxref{Group Parameters}).
2888 Group parameters (of course) override topic parameters, and topic
2889 parameters in sub-topics override topic parameters in super-topics. You
2890 know. Normal inheritance rules. (@dfn{Rules} is here a noun, not a
2891 verb, although you may feel free to disagree with me here.)
2897 2: alt.religion.emacs
2901 0: comp.talk.emacs.recovery
2903 8: comp.binaries.fractals
2904 13: comp.sources.unix
2908 The @samp{Emacs} topic has the topic parameter @code{(score-file
2909 . "emacs.SCORE")}; the @samp{Relief} topic has the topic parameter
2910 @code{(score-file . "relief.SCORE")}; and the @samp{Misc} topic has the
2911 topic parameter @code{(score-file . "emacs.SCORE")}. In addition,
2912 @* @samp{alt.religion.emacs} has the group parameter @code{(score-file
2913 . "religion.SCORE")}.
2915 Now, when you enter @samp{alt.sex.emacs} in the @samp{Relief} topic, you
2916 will get the @file{relief.SCORE} home score file. If you enter the same
2917 group in the @samp{Emacs} topic, you'll get the @file{emacs.SCORE} home
2918 score file. If you enter the group @samp{alt.religion.emacs}, you'll
2919 get the @file{religion.SCORE} home score file.
2921 This seems rather simple and self-evident, doesn't it? Well, yes. But
2922 there are some problems, especially with the @code{total-expiry}
2923 parameter. Say you have a mail group in two topics; one with
2924 @code{total-expiry} and one without. What happens when you do @kbd{M-x
2925 gnus-expire-all-expirable-groups}? Gnus has no way of telling which one
2926 of these topics you mean to expire articles from, so anything may
2927 happen. In fact, I hereby declare that it is @dfn{undefined} what
2928 happens. You just have to be careful if you do stuff like that.
2931 @node Misc Group Stuff
2932 @section Misc Group Stuff
2935 * Scanning New Messages:: Asking Gnus to see whether new messages have arrived.
2936 * Group Information:: Information and help on groups and Gnus.
2937 * Group Timestamp:: Making Gnus keep track of when you last read a group.
2938 * File Commands:: Reading and writing the Gnus files.
2945 @findex gnus-group-enter-server-mode
2946 Enter the server buffer (@code{gnus-group-enter-server-mode}).
2947 @xref{The Server Buffer}.
2951 @findex gnus-group-post-news
2952 Post an article to a group (@code{gnus-group-post-news}). If given a
2953 prefix, the current group name will be used as the default.
2957 @findex gnus-group-mail
2958 Mail a message somewhere (@code{gnus-group-mail}).
2962 Variables for the group buffer:
2966 @item gnus-group-mode-hook
2967 @vindex gnus-group-mode-hook
2968 is called after the group buffer has been
2971 @item gnus-group-prepare-hook
2972 @vindex gnus-group-prepare-hook
2973 is called after the group buffer is
2974 generated. It may be used to modify the buffer in some strange,
2977 @item gnus-group-prepared-hook
2978 @vindex gnus-group-prepare-hook
2979 is called as the very last thing after the group buffer has been
2980 generated. It may be used to move point around, for instance.
2982 @item gnus-permanently-visible-groups
2983 @vindex gnus-permanently-visible-groups
2984 Groups matching this regexp will always be listed in the group buffer,
2985 whether they are empty or not.
2990 @node Scanning New Messages
2991 @subsection Scanning New Messages
2992 @cindex new messages
2993 @cindex scanning new news
2999 @findex gnus-group-get-new-news
3000 @c @icon{gnus-group-get-new-news}
3001 Check the server(s) for new articles. If the numerical prefix is used,
3002 this command will check only groups of level @var{arg} and lower
3003 (@code{gnus-group-get-new-news}). If given a non-numerical prefix, this
3004 command will force a total re-reading of the active file(s) from the
3009 @findex gnus-group-get-new-news-this-group
3010 @vindex gnus-goto-next-group-when-activating
3011 @c @icon{gnus-group-get-new-news-this-group}
3012 Check whether new articles have arrived in the current group
3013 (@code{gnus-group-get-new-news-this-group}).
3014 @code{gnus-goto-next-group-when-activating} says whether this command is
3015 to move point to the next group or not. It is @code{t} by default.
3017 @findex gnus-activate-all-groups
3018 @cindex activating groups
3020 @kindex C-c M-g (Group)
3021 Activate absolutely all groups (@code{gnus-activate-all-groups}).
3026 @findex gnus-group-restart
3027 Restart Gnus (@code{gnus-group-restart}). This saves the @file{.newsrc}
3028 file(s), closes the connection to all servers, clears up all run-time
3029 Gnus variables, and then starts Gnus all over again.
3033 @vindex gnus-get-new-news-hook
3034 @code{gnus-get-new-news-hook} is run just before checking for new news.
3036 @vindex gnus-after-getting-new-news-hook
3037 @code{gnus-after-getting-new-news-hook} is run after checking for new
3041 @node Group Information
3042 @subsection Group Information
3043 @cindex group information
3044 @cindex information on groups
3051 @findex gnus-group-fetch-faq
3052 @vindex gnus-group-faq-directory
3055 Try to fetch the FAQ for the current group
3056 (@code{gnus-group-fetch-faq}). Gnus will try to get the FAQ from
3057 @code{gnus-group-faq-directory}, which is usually a directory on a
3058 remote machine. This variable can also be a list of directories. In
3059 that case, giving a prefix to this command will allow you to choose
3060 between the various sites. @code{ange-ftp} (or @code{efs}) will be used
3061 for fetching the file.
3063 If fetching from the first site is unsuccessful, Gnus will attempt to go
3064 through @code{gnus-group-faq-directory} and try to open them one by one.
3068 @c @icon{gnus-group-describe-group}
3070 @kindex C-c C-d (Group)
3071 @cindex describing groups
3072 @cindex group description
3073 @findex gnus-group-describe-group
3074 Describe the current group (@code{gnus-group-describe-group}). If given
3075 a prefix, force Gnus to re-read the description from the server.
3079 @findex gnus-group-describe-all-groups
3080 Describe all groups (@code{gnus-group-describe-all-groups}). If given a
3081 prefix, force Gnus to re-read the description file from the server.
3088 @findex gnus-version
3089 Display current Gnus version numbers (@code{gnus-version}).
3093 @findex gnus-group-describe-briefly
3094 Give a very short help message (@code{gnus-group-describe-briefly}).
3097 @kindex C-c C-i (Group)
3100 @findex gnus-info-find-node
3101 Go to the Gnus info node (@code{gnus-info-find-node}).
3105 @node Group Timestamp
3106 @subsection Group Timestamp
3108 @cindex group timestamps
3110 It can be convenient to let Gnus keep track of when you last read a
3111 group. To set the ball rolling, you should add
3112 @code{gnus-group-set-timestamp} to @code{gnus-select-group-hook}:
3115 (add-hook 'gnus-select-group-hook 'gnus-group-set-timestamp)
3118 After doing this, each time you enter a group, it'll be recorded.
3120 This information can be displayed in various ways---the easiest is to
3121 use the @samp{%d} spec in the group line format:
3124 (setq gnus-group-line-format
3125 "%M\%S\%p\%P\%5y: %(%-40,40g%) %d\n")
3128 This will result in lines looking like:
3131 * 0: mail.ding 19961002T012943
3132 0: custom 19961002T012713
3135 As you can see, the date is displayed in compact ISO 8601 format. This
3136 may be a bit too much, so to just display the date, you could say
3140 (setq gnus-group-line-format
3141 "%M\%S\%p\%P\%5y: %(%-40,40g%) %6,6~(cut 2)d\n")
3146 @subsection File Commands
3147 @cindex file commands
3153 @findex gnus-group-read-init-file
3154 @vindex gnus-init-file
3155 @cindex reading init file
3156 Re-read the init file (@code{gnus-init-file}, which defaults to
3157 @file{~/.gnus}) (@code{gnus-group-read-init-file}).
3161 @findex gnus-group-save-newsrc
3162 @cindex saving .newsrc
3163 Save the @file{.newsrc.eld} file (and @file{.newsrc} if wanted)
3164 (@code{gnus-group-save-newsrc}). If given a prefix, force saving the
3165 file(s) whether Gnus thinks it is necessary or not.
3168 @c @kindex Z (Group)
3169 @c @findex gnus-group-clear-dribble
3170 @c Clear the dribble buffer (@code{gnus-group-clear-dribble}).
3175 @node The Summary Buffer
3176 @chapter The Summary Buffer
3177 @cindex summary buffer
3179 A line for each article is displayed in the summary buffer. You can
3180 move around, read articles, post articles and reply to articles.
3182 The most common way to a summary buffer is to select a group from the
3183 group buffer (@pxref{Selecting a Group}).
3185 You can have as many summary buffers open as you wish.
3188 * Summary Buffer Format:: Deciding how the summary buffer is to look.
3189 * Summary Maneuvering:: Moving around the summary buffer.
3190 * Choosing Articles:: Reading articles.
3191 * Paging the Article:: Scrolling the current article.
3192 * Reply Followup and Post:: Posting articles.
3193 * Canceling and Superseding:: ``Whoops, I shouldn't have called him that.''
3194 * Marking Articles:: Marking articles as read, expirable, etc.
3195 * Limiting:: You can limit the summary buffer.
3196 * Threading:: How threads are made.
3197 * Sorting:: How articles and threads are sorted.
3198 * Asynchronous Fetching:: Gnus might be able to pre-fetch articles.
3199 * Article Caching:: You may store articles in a cache.
3200 * Persistent Articles:: Making articles expiry-resistant.
3201 * Article Backlog:: Having already read articles hang around.
3202 * Saving Articles:: Ways of customizing article saving.
3203 * Decoding Articles:: Gnus can treat series of (uu)encoded articles.
3204 * Article Treatment:: The article buffer can be mangled at will.
3205 * MIME Commands:: Doing MIMEy things with the articles.
3206 * Article Commands:: Doing various things with the article buffer.
3207 * Summary Sorting:: Sorting the summary buffer in various ways.
3208 * Finding the Parent:: No child support? Get the parent.
3209 * Alternative Approaches:: Reading using non-default summaries.
3210 * Tree Display:: A more visual display of threads.
3211 * Mail Group Commands:: Some commands can only be used in mail groups.
3212 * Various Summary Stuff:: What didn't fit anywhere else.
3213 * Exiting the Summary Buffer:: Returning to the Group buffer.
3214 * Crosspost Handling:: How crossposted articles are dealt with.
3215 * Duplicate Suppression:: An alternative when crosspost handling fails.
3219 @node Summary Buffer Format
3220 @section Summary Buffer Format
3221 @cindex summary buffer format
3225 \gnusfigure{The Summary Buffer}{180}{
3226 \put(0,0){\epsfig{figure=tmp/summary.ps,width=7.5cm}}
3227 \put(445,0){\makebox(0,0)[br]{\epsfig{figure=tmp/summary-article.ps,width=7.5cm}}}
3233 * Summary Buffer Lines:: You can specify how summary lines should look.
3234 * Summary Buffer Mode Line:: You can say how the mode line should look.
3235 * Summary Highlighting:: Making the summary buffer all pretty and nice.
3238 @findex mail-extract-address-components
3239 @findex gnus-extract-address-components
3240 @vindex gnus-extract-address-components
3241 Gnus will use the value of the @code{gnus-extract-address-components}
3242 variable as a function for getting the name and address parts of a
3243 @code{From} header. Two pre-defined functions exist:
3244 @code{gnus-extract-address-components}, which is the default, quite
3245 fast, and too simplistic solution; and
3246 @code{mail-extract-address-components}, which works very nicely, but is
3247 slower. The default function will return the wrong answer in 5% of the
3248 cases. If this is unacceptable to you, use the other function instead.
3250 @vindex gnus-summary-same-subject
3251 @code{gnus-summary-same-subject} is a string indicating that the current
3252 article has the same subject as the previous. This string will be used
3253 with those specs that require it. The default is @code{""}.
3256 @node Summary Buffer Lines
3257 @subsection Summary Buffer Lines
3259 @vindex gnus-summary-line-format
3260 You can change the format of the lines in the summary buffer by changing
3261 the @code{gnus-summary-line-format} variable. It works along the same
3262 lines as a normal @code{format} string, with some extensions
3263 (@pxref{Formatting Variables}).
3265 The default string is @samp{%U%R%z%I%(%[%4L: %-20,20n%]%) %s\n}.
3267 The following format specification characters are understood:
3275 Subject if the article is the root of the thread or the previous article
3276 had a different subject, @code{gnus-summary-same-subject} otherwise.
3277 (@code{gnus-summary-same-subject} defaults to @code{""}.)
3279 Full @code{From} header.
3281 The name (from the @code{From} header).
3283 The name (from the @code{From} header). This differs from the @code{n}
3284 spec in that it uses the function designated by the
3285 @code{gnus-extract-address-components} variable, which is slower, but
3286 may be more thorough.
3288 The address (from the @code{From} header). This works the same way as
3291 Number of lines in the article.
3293 Number of characters in the article.
3295 Indentation based on thread level (@pxref{Customizing Threading}).
3297 Nothing if the article is a root and lots of spaces if it isn't (it
3298 pushes everything after it off the screen).
3300 Opening bracket, which is normally @samp{[}, but can also be @samp{<}
3301 for adopted articles (@pxref{Customizing Threading}).
3303 Closing bracket, which is normally @samp{]}, but can also be @samp{>}
3304 for adopted articles.
3306 One space for each thread level.
3308 Twenty minus thread level spaces.
3313 This misleadingly named specifier is the @dfn{secondary mark}. This
3314 mark will say whether the article has been replied to, has been cached,
3318 Score as a number (@pxref{Scoring}).
3320 @vindex gnus-summary-zcore-fuzz
3321 Zcore, @samp{+} if above the default level and @samp{-} if below the
3322 default level. If the difference between
3323 @code{gnus-summary-default-score} and the score is less than
3324 @code{gnus-summary-zcore-fuzz}, this spec will not be used.
3332 The @code{Date} in @code{DD-MMM} format.
3334 The @code{Date} in @var{YYYYMMDD}@code{T}@var{HHMMSS} format.
3340 Number of articles in the current sub-thread. Using this spec will slow
3341 down summary buffer generation somewhat.
3343 An @samp{=} (@code{gnus-not-empty-thread-mark}) will be displayed if the
3344 article has any children.
3350 User defined specifier. The next character in the format string should
3351 be a letter. Gnus will call the function
3352 @code{gnus-user-format-function-}@samp{X}, where @samp{X} is the letter
3353 following @samp{%u}. The function will be passed the current header as
3354 argument. The function should return a string, which will be inserted
3355 into the summary just like information from any other summary specifier.
3358 The @samp{%U} (status), @samp{%R} (replied) and @samp{%z} (zcore) specs
3359 have to be handled with care. For reasons of efficiency, Gnus will
3360 compute what column these characters will end up in, and ``hard-code''
3361 that. This means that it is invalid to have these specs after a
3362 variable-length spec. Well, you might not be arrested, but your summary
3363 buffer will look strange, which is bad enough.
3365 The smart choice is to have these specs as far to the left as possible.
3366 (Isn't that the case with everything, though? But I digress.)
3368 This restriction may disappear in later versions of Gnus.
3371 @node Summary Buffer Mode Line
3372 @subsection Summary Buffer Mode Line
3374 @vindex gnus-summary-mode-line-format
3375 You can also change the format of the summary mode bar (@pxref{Mode Line
3376 Formatting}). Set @code{gnus-summary-mode-line-format} to whatever you
3377 like. The default is @samp{Gnus: %%b [%A] %Z}.
3379 Here are the elements you can play with:
3385 Unprefixed group name.
3387 Current article number.
3389 Current article score.
3393 Number of unread articles in this group.
3395 Number of unread articles in this group that aren't displayed in the
3398 A string with the number of unread and unselected articles represented
3399 either as @samp{<%U(+%e) more>} if there are both unread and unselected
3400 articles, and just as @samp{<%U more>} if there are just unread articles
3401 and no unselected ones.
3403 Shortish group name. For instance, @samp{rec.arts.anime} will be
3404 shortened to @samp{r.a.anime}.
3406 Subject of the current article.
3408 User-defined spec (@pxref{User-Defined Specs}).
3410 Name of the current score file (@pxref{Scoring}).
3412 Number of dormant articles (@pxref{Unread Articles}).
3414 Number of ticked articles (@pxref{Unread Articles}).
3416 Number of articles that have been marked as read in this session.
3418 Number of articles expunged by the score files.
3422 @node Summary Highlighting
3423 @subsection Summary Highlighting
3427 @item gnus-visual-mark-article-hook
3428 @vindex gnus-visual-mark-article-hook
3429 This hook is run after selecting an article. It is meant to be used for
3430 highlighting the article in some way. It is not run if
3431 @code{gnus-visual} is @code{nil}.
3433 @item gnus-summary-update-hook
3434 @vindex gnus-summary-update-hook
3435 This hook is called when a summary line is changed. It is not run if
3436 @code{gnus-visual} is @code{nil}.
3438 @item gnus-summary-selected-face
3439 @vindex gnus-summary-selected-face
3440 This is the face (or @dfn{font} as some people call it) used to
3441 highlight the current article in the summary buffer.
3443 @item gnus-summary-highlight
3444 @vindex gnus-summary-highlight
3445 Summary lines are highlighted according to this variable, which is a
3446 list where the elements are of the format @var{(FORM . FACE)}. If you
3447 would, for instance, like ticked articles to be italic and high-scored
3448 articles to be bold, you could set this variable to something like
3450 (((eq mark gnus-ticked-mark) . italic)
3451 ((> score default) . bold))
3453 As you may have guessed, if @var{FORM} returns a non-@code{nil} value,
3454 @var{FACE} will be applied to the line.
3458 @node Summary Maneuvering
3459 @section Summary Maneuvering
3460 @cindex summary movement
3462 All the straight movement commands understand the numeric prefix and
3463 behave pretty much as you'd expect.
3465 None of these commands select articles.
3470 @kindex M-n (Summary)
3471 @kindex G M-n (Summary)
3472 @findex gnus-summary-next-unread-subject
3473 Go to the next summary line of an unread article
3474 (@code{gnus-summary-next-unread-subject}).
3478 @kindex M-p (Summary)
3479 @kindex G M-p (Summary)
3480 @findex gnus-summary-prev-unread-subject
3481 Go to the previous summary line of an unread article
3482 (@code{gnus-summary-prev-unread-subject}).
3487 @kindex G j (Summary)
3488 @findex gnus-summary-goto-article
3489 Ask for an article number or @code{Message-ID}, and then go to that
3490 article (@code{gnus-summary-goto-article}).
3493 @kindex G g (Summary)
3494 @findex gnus-summary-goto-subject
3495 Ask for an article number and then go to the summary line of that article
3496 without displaying the article (@code{gnus-summary-goto-subject}).
3499 If Gnus asks you to press a key to confirm going to the next group, you
3500 can use the @kbd{C-n} and @kbd{C-p} keys to move around the group
3501 buffer, searching for the next group to read without actually returning
3502 to the group buffer.
3504 Variables related to summary movement:
3508 @vindex gnus-auto-select-next
3509 @item gnus-auto-select-next
3510 If you issue one of the movement commands (like @kbd{n}) and there are
3511 no more unread articles after the current one, Gnus will offer to go to
3512 the next group. If this variable is @code{t} and the next group is
3513 empty, Gnus will exit summary mode and return to the group buffer. If
3514 this variable is neither @code{t} nor @code{nil}, Gnus will select the
3515 next group, no matter whether it has any unread articles or not. As a
3516 special case, if this variable is @code{quietly}, Gnus will select the
3517 next group without asking for confirmation. If this variable is
3518 @code{almost-quietly}, the same will happen only if you are located on
3519 the last article in the group. Finally, if this variable is
3520 @code{slightly-quietly}, the @kbd{Z n} command will go to the next group
3521 without confirmation. Also @pxref{Group Levels}.
3523 @item gnus-auto-select-same
3524 @vindex gnus-auto-select-same
3525 If non-@code{nil}, all the movement commands will try to go to the next
3526 article with the same subject as the current. (@dfn{Same} here might
3527 mean @dfn{roughly equal}. See @code{gnus-summary-gather-subject-limit}
3528 for details (@pxref{Customizing Threading}).) If there are no more
3529 articles with the same subject, go to the first unread article.
3531 This variable is not particularly useful if you use a threaded display.
3533 @item gnus-summary-check-current
3534 @vindex gnus-summary-check-current
3535 If non-@code{nil}, all the ``unread'' movement commands will not proceed
3536 to the next (or previous) article if the current article is unread.
3537 Instead, they will choose the current article.
3539 @item gnus-auto-center-summary
3540 @vindex gnus-auto-center-summary
3541 If non-@code{nil}, Gnus will keep the point in the summary buffer
3542 centered at all times. This makes things quite tidy, but if you have a
3543 slow network connection, or simply do not like this un-Emacsism, you can
3544 set this variable to @code{nil} to get the normal Emacs scrolling
3545 action. This will also inhibit horizontal re-centering of the summary
3546 buffer, which might make it more inconvenient to read extremely long
3552 @node Choosing Articles
3553 @section Choosing Articles
3554 @cindex selecting articles
3557 * Choosing Commands:: Commands for choosing articles.
3558 * Choosing Variables:: Variables that influence these commands.
3562 @node Choosing Commands
3563 @subsection Choosing Commands
3565 None of the following movement commands understand the numeric prefix,
3566 and they all select and display an article.
3570 @kindex SPACE (Summary)
3571 @findex gnus-summary-next-page
3572 Select the current article, or, if that one's read already, the next
3573 unread article (@code{gnus-summary-next-page}).
3578 @kindex G n (Summary)
3579 @findex gnus-summary-next-unread-article
3580 @c @icon{gnus-summary-next-unread}
3581 Go to next unread article (@code{gnus-summary-next-unread-article}).
3586 @findex gnus-summary-prev-unread-article
3587 @c @icon{gnus-summary-prev-unread}
3588 Go to previous unread article (@code{gnus-summary-prev-unread-article}).
3593 @kindex G N (Summary)
3594 @findex gnus-summary-next-article
3595 Go to the next article (@code{gnus-summary-next-article}).
3600 @kindex G P (Summary)
3601 @findex gnus-summary-prev-article
3602 Go to the previous article (@code{gnus-summary-prev-article}).
3605 @kindex G C-n (Summary)
3606 @findex gnus-summary-next-same-subject
3607 Go to the next article with the same subject
3608 (@code{gnus-summary-next-same-subject}).
3611 @kindex G C-p (Summary)
3612 @findex gnus-summary-prev-same-subject
3613 Go to the previous article with the same subject
3614 (@code{gnus-summary-prev-same-subject}).
3618 @kindex G f (Summary)
3620 @findex gnus-summary-first-unread-article
3621 Go to the first unread article
3622 (@code{gnus-summary-first-unread-article}).
3626 @kindex G b (Summary)
3628 @findex gnus-summary-best-unread-article
3629 Go to the article with the highest score
3630 (@code{gnus-summary-best-unread-article}).
3635 @kindex G l (Summary)
3636 @findex gnus-summary-goto-last-article
3637 Go to the previous article read (@code{gnus-summary-goto-last-article}).
3640 @kindex G o (Summary)
3641 @findex gnus-summary-pop-article
3643 @cindex article history
3644 Pop an article off the summary history and go to this article
3645 (@code{gnus-summary-pop-article}). This command differs from the
3646 command above in that you can pop as many previous articles off the
3647 history as you like, while @kbd{l} toggles the two last read articles.
3648 For a somewhat related issue (if you use these commands a lot),
3649 @pxref{Article Backlog}.
3653 @node Choosing Variables
3654 @subsection Choosing Variables
3656 Some variables relevant for moving and selecting articles:
3659 @item gnus-auto-extend-newsgroup
3660 @vindex gnus-auto-extend-newsgroup
3661 All the movement commands will try to go to the previous (or next)
3662 article, even if that article isn't displayed in the Summary buffer if
3663 this variable is non-@code{nil}. Gnus will then fetch the article from
3664 the server and display it in the article buffer.
3666 @item gnus-select-article-hook
3667 @vindex gnus-select-article-hook
3668 This hook is called whenever an article is selected. By default it
3669 exposes any threads hidden under the selected article.
3671 @item gnus-mark-article-hook
3672 @vindex gnus-mark-article-hook
3673 @findex gnus-summary-mark-unread-as-read
3674 @findex gnus-summary-mark-read-and-unread-as-read
3675 @findex gnus-unread-mark
3676 This hook is called whenever an article is selected. It is intended to
3677 be used for marking articles as read. The default value is
3678 @code{gnus-summary-mark-read-and-unread-as-read}, and will change the
3679 mark of almost any article you read to @code{gnus-unread-mark}. The
3680 only articles not affected by this function are ticked, dormant, and
3681 expirable articles. If you'd instead like to just have unread articles
3682 marked as read, you can use @code{gnus-summary-mark-unread-as-read}
3683 instead. It will leave marks like @code{gnus-low-score-mark},
3684 @code{gnus-del-mark} (and so on) alone.
3689 @node Paging the Article
3690 @section Scrolling the Article
3691 @cindex article scrolling
3696 @kindex SPACE (Summary)
3697 @findex gnus-summary-next-page
3698 Pressing @kbd{SPACE} will scroll the current article forward one page,
3699 or, if you have come to the end of the current article, will choose the
3700 next article (@code{gnus-summary-next-page}).
3703 @kindex DEL (Summary)
3704 @findex gnus-summary-prev-page
3705 Scroll the current article back one page (@code{gnus-summary-prev-page}).
3708 @kindex RET (Summary)
3709 @findex gnus-summary-scroll-up
3710 Scroll the current article one line forward
3711 (@code{gnus-summary-scroll-up}).
3714 @kindex M-RET (Summary)
3715 @findex gnus-summary-scroll-down
3716 Scroll the current article one line backward
3717 (@code{gnus-summary-scroll-down}).
3721 @kindex A g (Summary)
3723 @findex gnus-summary-show-article
3724 (Re)fetch the current article (@code{gnus-summary-show-article}). If
3725 given a prefix, fetch the current article, but don't run any of the
3726 article treatment functions. This will give you a ``raw'' article, just
3727 the way it came from the server.
3732 @kindex A < (Summary)
3733 @findex gnus-summary-beginning-of-article
3734 Scroll to the beginning of the article
3735 (@code{gnus-summary-beginning-of-article}).
3740 @kindex A > (Summary)
3741 @findex gnus-summary-end-of-article
3742 Scroll to the end of the article (@code{gnus-summary-end-of-article}).
3746 @kindex A s (Summary)
3748 @findex gnus-summary-isearch-article
3749 Perform an isearch in the article buffer
3750 (@code{gnus-summary-isearch-article}).
3754 @findex gnus-summary-select-article-buffer
3755 Select the article buffer (@code{gnus-summary-select-article-buffer}).
3760 @node Reply Followup and Post
3761 @section Reply, Followup and Post
3764 * Summary Mail Commands:: Sending mail.
3765 * Summary Post Commands:: Sending news.
3769 @node Summary Mail Commands
3770 @subsection Summary Mail Commands
3772 @cindex composing mail
3774 Commands for composing a mail message:
3780 @kindex S r (Summary)
3782 @findex gnus-summary-reply
3783 @c @icon{gnus-summary-mail-reply}
3784 @c @icon{gnus-summary-reply}
3785 Mail a reply to the author of the current article
3786 (@code{gnus-summary-reply}).
3791 @kindex S R (Summary)
3792 @findex gnus-summary-reply-with-original
3793 @c @icon{gnus-summary-reply-with-original}
3794 Mail a reply to the author of the current article and include the
3795 original message (@code{gnus-summary-reply-with-original}). This
3796 command uses the process/prefix convention.
3799 @kindex S w (Summary)
3800 @findex gnus-summary-wide-reply
3801 Mail a wide reply to the author of the current article
3802 (@code{gnus-summary-wide-reply}). A @dfn{wide reply} is a reply that
3803 goes out to all people listed in the @code{To}, @code{From} (or
3804 @code{Reply-to}) and @code{Cc} headers.
3807 @kindex S W (Summary)
3808 @findex gnus-summary-wide-reply-with-original
3809 Mail a wide reply to the current article and include the original
3810 message (@code{gnus-summary-reply-with-original}). This command uses
3811 the process/prefix convention.
3814 @kindex S o m (Summary)
3815 @findex gnus-summary-mail-forward
3816 @c @icon{gnus-summary-mail-forward}
3817 Forward the current article to some other person
3818 (@code{gnus-summary-mail-forward}). If given a prefix, include the full
3819 headers of the forwarded article.
3824 @kindex S m (Summary)
3825 @findex gnus-summary-mail-other-window
3826 @c @icon{gnus-summary-mail-originate}
3827 Send a mail to some other person
3828 (@code{gnus-summary-mail-other-window}).
3831 @kindex S D b (Summary)
3832 @findex gnus-summary-resend-bounced-mail
3833 @cindex bouncing mail
3834 If you have sent a mail, but the mail was bounced back to you for some
3835 reason (wrong address, transient failure), you can use this command to
3836 resend that bounced mail (@code{gnus-summary-resend-bounced-mail}). You
3837 will be popped into a mail buffer where you can edit the headers before
3838 sending the mail off again. If you give a prefix to this command, and
3839 the bounced mail is a reply to some other mail, Gnus will try to fetch
3840 that mail and display it for easy perusal of its headers. This might
3841 very well fail, though.
3844 @kindex S D r (Summary)
3845 @findex gnus-summary-resend-message
3846 Not to be confused with the previous command,
3847 @code{gnus-summary-resend-message} will prompt you for an address to
3848 send the current message off to, and then send it to that place. The
3849 headers of the message won't be altered---but lots of headers that say
3850 @code{Resent-To}, @code{Resent-From} and so on will be added. This
3851 means that you actually send a mail to someone that has a @code{To}
3852 header that (probably) points to yourself. This will confuse people.
3853 So, natcherly you'll only do that if you're really eVIl.
3855 This command is mainly used if you have several accounts and want to
3856 ship a mail to a different account of yours. (If you're both
3857 @code{root} and @code{postmaster} and get a mail for @code{postmaster}
3858 to the @code{root} account, you may want to resend it to
3859 @code{postmaster}. Ordnung muß sein!
3861 This command understands the process/prefix convention
3862 (@pxref{Process/Prefix}).
3865 @kindex S O m (Summary)
3866 @findex gnus-uu-digest-mail-forward
3867 Digest the current series (@pxref{Decoding Articles}) and forward the
3868 result using mail (@code{gnus-uu-digest-mail-forward}). This command
3869 uses the process/prefix convention (@pxref{Process/Prefix}).
3872 @kindex S M-c (Summary)
3873 @findex gnus-summary-mail-crosspost-complaint
3874 @cindex crossposting
3875 @cindex excessive crossposting
3876 Send a complaint about excessive crossposting to the author of the
3877 current article (@code{gnus-summary-mail-crosspost-complaint}).
3879 @findex gnus-crosspost-complaint
3880 This command is provided as a way to fight back against the current
3881 crossposting pandemic that's sweeping Usenet. It will compose a reply
3882 using the @code{gnus-crosspost-complaint} variable as a preamble. This
3883 command understands the process/prefix convention
3884 (@pxref{Process/Prefix}) and will prompt you before sending each mail.
3888 Also @pxref{(message)Header Commands} for more information.
3891 @node Summary Post Commands
3892 @subsection Summary Post Commands
3894 @cindex composing news
3896 Commands for posting a news article:
3902 @kindex S p (Summary)
3903 @findex gnus-summary-post-news
3904 @c @icon{gnus-summary-post-news}
3905 Post an article to the current group
3906 (@code{gnus-summary-post-news}).
3911 @kindex S f (Summary)
3912 @findex gnus-summary-followup
3913 @c @icon{gnus-summary-followup}
3914 Post a followup to the current article (@code{gnus-summary-followup}).
3918 @kindex S F (Summary)
3920 @c @icon{gnus-summary-followup-with-original}
3921 @findex gnus-summary-followup-with-original
3922 Post a followup to the current article and include the original message
3923 (@code{gnus-summary-followup-with-original}). This command uses the
3924 process/prefix convention.
3927 @kindex S n (Summary)
3928 @findex gnus-summary-followup-to-mail
3929 Post a followup to the current article via news, even if you got the
3930 message through mail (@code{gnus-summary-followup-to-mail}).
3933 @kindex S N (Summary)
3934 @findex gnus-summary-followup-to-mail-with-original
3935 Post a followup to the current article via news, even if you got the
3936 message through mail and include the original message
3937 (@code{gnus-summary-followup-to-mail-with-original}). This command uses
3938 the process/prefix convention.
3941 @kindex S o p (Summary)
3942 @findex gnus-summary-post-forward
3943 Forward the current article to a newsgroup
3944 (@code{gnus-summary-post-forward}). If given a prefix, include the full
3945 headers of the forwarded article.
3948 @kindex S O p (Summary)
3949 @findex gnus-uu-digest-post-forward
3951 @cindex making digests
3952 Digest the current series and forward the result to a newsgroup
3953 (@code{gnus-uu-digest-mail-forward}). This command uses the
3954 process/prefix convention.
3957 @kindex S u (Summary)
3958 @findex gnus-uu-post-news
3959 @c @icon{gnus-uu-post-news}
3960 Uuencode a file, split it into parts, and post it as a series
3961 (@code{gnus-uu-post-news}). (@pxref{Uuencoding and Posting}).
3964 Also @pxref{(message)Header Commands} for more information.
3967 @node Canceling and Superseding
3968 @section Canceling Articles
3969 @cindex canceling articles
3970 @cindex superseding articles
3972 Have you ever written something, and then decided that you really,
3973 really, really wish you hadn't posted that?
3975 Well, you can't cancel mail, but you can cancel posts.
3977 @findex gnus-summary-cancel-article
3979 @c @icon{gnus-summary-cancel-article}
3980 Find the article you wish to cancel (you can only cancel your own
3981 articles, so don't try any funny stuff). Then press @kbd{C} or @kbd{S
3982 c} (@code{gnus-summary-cancel-article}). Your article will be
3983 canceled---machines all over the world will be deleting your article.
3984 This command uses the process/prefix convention (@pxref{Process/Prefix}).
3986 Be aware, however, that not all sites honor cancels, so your article may
3987 live on here and there, while most sites will delete the article in
3990 Gnus will use the ``current'' select method when canceling. If you
3991 want to use the standard posting method, use the @samp{a} symbolic
3992 prefix (@pxref{Symbolic Prefixes}).
3994 If you discover that you have made some mistakes and want to do some
3995 corrections, you can post a @dfn{superseding} article that will replace
3996 your original article.
3998 @findex gnus-summary-supersede-article
4000 Go to the original article and press @kbd{S s}
4001 (@code{gnus-summary-supersede-article}). You will be put in a buffer
4002 where you can edit the article all you want before sending it off the
4005 The same goes for superseding as for canceling, only more so: Some
4006 sites do not honor superseding. On those sites, it will appear that you
4007 have posted almost the same article twice.
4009 If you have just posted the article, and change your mind right away,
4010 there is a trick you can use to cancel/supersede the article without
4011 waiting for the article to appear on your site first. You simply return
4012 to the post buffer (which is called @code{*sent ...*}). There you will
4013 find the article you just posted, with all the headers intact. Change
4014 the @code{Message-ID} header to a @code{Cancel} or @code{Supersedes}
4015 header by substituting one of those words for the word
4016 @code{Message-ID}. Then just press @kbd{C-c C-c} to send the article as
4017 you would do normally. The previous article will be
4018 canceled/superseded.
4020 Just remember, kids: There is no 'c' in 'supersede'.
4023 @node Marking Articles
4024 @section Marking Articles
4025 @cindex article marking
4026 @cindex article ticking
4029 There are several marks you can set on an article.
4031 You have marks that decide the @dfn{readedness} (whoo, neato-keano
4032 neologism ohoy!) of the article. Alphabetic marks generally mean
4033 @dfn{read}, while non-alphabetic characters generally mean @dfn{unread}.
4035 In addition, you also have marks that do not affect readedness.
4038 * Unread Articles:: Marks for unread articles.
4039 * Read Articles:: Marks for read articles.
4040 * Other Marks:: Marks that do not affect readedness.
4044 There's a plethora of commands for manipulating these marks:
4048 * Setting Marks:: How to set and remove marks.
4049 * Setting Process Marks:: How to mark articles for later processing.
4053 @node Unread Articles
4054 @subsection Unread Articles
4056 The following marks mark articles as (kinda) unread, in one form or
4061 @vindex gnus-ticked-mark
4062 Marked as ticked (@code{gnus-ticked-mark}).
4064 @dfn{Ticked articles} are articles that will remain visible always. If
4065 you see an article that you find interesting, or you want to put off
4066 reading it, or replying to it, until sometime later, you'd typically
4067 tick it. However, articles can be expired, so if you want to keep an
4068 article forever, you'll have to make it persistent (@pxref{Persistent
4072 @vindex gnus-dormant-mark
4073 Marked as dormant (@code{gnus-dormant-mark}).
4075 @dfn{Dormant articles} will only appear in the summary buffer if there
4076 are followups to it. If you want to see them even if they don't have
4077 followups, you can use the @kbd{/ D} command (@pxref{Limiting}).
4080 @vindex gnus-unread-mark
4081 Marked as unread (@code{gnus-unread-mark}).
4083 @dfn{Unread articles} are articles that haven't been read at all yet.
4088 @subsection Read Articles
4089 @cindex expirable mark
4091 All the following marks mark articles as read.
4096 @vindex gnus-del-mark
4097 These are articles that the user has marked as read with the @kbd{d}
4098 command manually, more or less (@code{gnus-del-mark}).
4101 @vindex gnus-read-mark
4102 Articles that have actually been read (@code{gnus-read-mark}).
4105 @vindex gnus-ancient-mark
4106 Articles that were marked as read in previous sessions and are now
4107 @dfn{old} (@code{gnus-ancient-mark}).
4110 @vindex gnus-killed-mark
4111 Marked as killed (@code{gnus-killed-mark}).
4114 @vindex gnus-kill-file-mark
4115 Marked as killed by kill files (@code{gnus-kill-file-mark}).
4118 @vindex gnus-low-score-mark
4119 Marked as read by having too low a score (@code{gnus-low-score-mark}).
4122 @vindex gnus-catchup-mark
4123 Marked as read by a catchup (@code{gnus-catchup-mark}).
4126 @vindex gnus-canceled-mark
4127 Canceled article (@code{gnus-canceled-mark})
4130 @vindex gnus-souped-mark
4131 @sc{SOUP}ed article (@code{gnus-souped-mark}). @xref{SOUP}.
4134 @vindex gnus-sparse-mark
4135 Sparsely reffed article (@code{gnus-sparse-mark}). @xref{Customizing
4139 @vindex gnus-duplicate-mark
4140 Article marked as read by duplicate suppression
4141 (@code{gnus-duplicated-mark}). @xref{Duplicate Suppression}.
4145 All these marks just mean that the article is marked as read, really.
4146 They are interpreted differently when doing adaptive scoring, though.
4148 One more special mark, though:
4152 @vindex gnus-expirable-mark
4153 Marked as expirable (@code{gnus-expirable-mark}).
4155 Marking articles as @dfn{expirable} (or have them marked as such
4156 automatically) doesn't make much sense in normal groups---a user doesn't
4157 control expiring of news articles, but in mail groups, for instance,
4158 articles marked as @dfn{expirable} can be deleted by Gnus at
4164 @subsection Other Marks
4165 @cindex process mark
4168 There are some marks that have nothing to do with whether the article is
4174 You can set a bookmark in the current article. Say you are reading a
4175 long thesis on cats' urinary tracts, and have to go home for dinner
4176 before you've finished reading the thesis. You can then set a bookmark
4177 in the article, and Gnus will jump to this bookmark the next time it
4178 encounters the article. @xref{Setting Marks}
4181 @vindex gnus-replied-mark
4182 All articles that you have replied to or made a followup to (i.e., have
4183 answered) will be marked with an @samp{A} in the second column
4184 (@code{gnus-replied-mark}).
4187 @vindex gnus-cached-mark
4188 Articles stored in the article cache will be marked with an @samp{*} in
4189 the second column (@code{gnus-cached-mark}). @xref{Article Caching}
4192 @vindex gnus-saved-mark
4193 Articles ``saved'' (in some manner or other; not necessarily
4194 religiously) are marked with an @samp{S} in the second column
4195 (@code{gnus-saved-mark}).
4198 @vindex gnus-not-empty-thread-mark
4199 @vindex gnus-empty-thread-mark
4200 If the @samp{%e} spec is used, the presence of threads or not will be
4201 marked with @code{gnus-not-empty-thread-mark} and
4202 @code{gnus-empty-thread-mark} in the third column, respectively.
4205 @vindex gnus-process-mark
4206 Finally we have the @dfn{process mark} (@code{gnus-process-mark}). A
4207 variety of commands react to the presence of the process mark. For
4208 instance, @kbd{X u} (@code{gnus-uu-decode-uu}) will uudecode and view
4209 all articles that have been marked with the process mark. Articles
4210 marked with the process mark have a @samp{#} in the second column.
4214 You might have noticed that most of these ``non-readedness'' marks
4215 appear in the second column by default. So if you have a cached, saved,
4216 replied article that you have process-marked, what will that look like?
4218 Nothing much. The precedence rules go as follows: process -> cache ->
4219 replied -> saved. So if the article is in the cache and is replied,
4220 you'll only see the cache mark and not the replied mark.
4224 @subsection Setting Marks
4225 @cindex setting marks
4227 All the marking commands understand the numeric prefix.
4232 @kindex M c (Summary)
4233 @kindex M-u (Summary)
4234 @findex gnus-summary-clear-mark-forward
4235 @cindex mark as unread
4236 Clear all readedness-marks from the current article
4237 (@code{gnus-summary-clear-mark-forward}). In other words, mark the
4243 @kindex M t (Summary)
4244 @findex gnus-summary-tick-article-forward
4245 Tick the current article (@code{gnus-summary-tick-article-forward}).
4246 @xref{Article Caching}
4251 @kindex M ? (Summary)
4252 @findex gnus-summary-mark-as-dormant
4253 Mark the current article as dormant
4254 (@code{gnus-summary-mark-as-dormant}). @xref{Article Caching}
4258 @kindex M d (Summary)
4260 @findex gnus-summary-mark-as-read-forward
4261 Mark the current article as read
4262 (@code{gnus-summary-mark-as-read-forward}).
4266 @findex gnus-summary-mark-as-read-backward
4267 Mark the current article as read and move point to the previous line
4268 (@code{gnus-summary-mark-as-read-backward}).
4273 @kindex M k (Summary)
4274 @findex gnus-summary-kill-same-subject-and-select
4275 Mark all articles that have the same subject as the current one as read,
4276 and then select the next unread article
4277 (@code{gnus-summary-kill-same-subject-and-select}).
4281 @kindex M K (Summary)
4282 @kindex C-k (Summary)
4283 @findex gnus-summary-kill-same-subject
4284 Mark all articles that have the same subject as the current one as read
4285 (@code{gnus-summary-kill-same-subject}).
4288 @kindex M C (Summary)
4289 @findex gnus-summary-catchup
4290 @c @icon{gnus-summary-catchup}
4291 Mark all unread articles as read (@code{gnus-summary-catchup}).
4294 @kindex M C-c (Summary)
4295 @findex gnus-summary-catchup-all
4296 Mark all articles in the group as read---even the ticked and dormant
4297 articles (@code{gnus-summary-catchup-all}).
4300 @kindex M H (Summary)
4301 @findex gnus-summary-catchup-to-here
4302 Catchup the current group to point
4303 (@code{gnus-summary-catchup-to-here}).
4306 @kindex C-w (Summary)
4307 @findex gnus-summary-mark-region-as-read
4308 Mark all articles between point and mark as read
4309 (@code{gnus-summary-mark-region-as-read}).
4312 @kindex M V k (Summary)
4313 @findex gnus-summary-kill-below
4314 Kill all articles with scores below the default score (or below the
4315 numeric prefix) (@code{gnus-summary-kill-below}).
4319 @kindex M e (Summary)
4321 @findex gnus-summary-mark-as-expirable
4322 Mark the current article as expirable
4323 (@code{gnus-summary-mark-as-expirable}).
4326 @kindex M b (Summary)
4327 @findex gnus-summary-set-bookmark
4328 Set a bookmark in the current article
4329 (@code{gnus-summary-set-bookmark}).
4332 @kindex M B (Summary)
4333 @findex gnus-summary-remove-bookmark
4334 Remove the bookmark from the current article
4335 (@code{gnus-summary-remove-bookmark}).
4338 @kindex M V c (Summary)
4339 @findex gnus-summary-clear-above
4340 Clear all marks from articles with scores over the default score (or
4341 over the numeric prefix) (@code{gnus-summary-clear-above}).
4344 @kindex M V u (Summary)
4345 @findex gnus-summary-tick-above
4346 Tick all articles with scores over the default score (or over the
4347 numeric prefix) (@code{gnus-summary-tick-above}).
4350 @kindex M V m (Summary)
4351 @findex gnus-summary-mark-above
4352 Prompt for a mark, and mark all articles with scores over the default
4353 score (or over the numeric prefix) with this mark
4354 (@code{gnus-summary-clear-above}).
4357 @vindex gnus-summary-goto-unread
4358 The @code{gnus-summary-goto-unread} variable controls what action should
4359 be taken after setting a mark. If non-@code{nil}, point will move to
4360 the next/previous unread article. If @code{nil}, point will just move
4361 one line up or down. As a special case, if this variable is
4362 @code{never}, all the marking commands as well as other commands (like
4363 @kbd{SPACE}) will move to the next article, whether it is unread or not.
4364 The default is @code{t}.
4367 @node Setting Process Marks
4368 @subsection Setting Process Marks
4369 @cindex setting process marks
4376 @kindex M P p (Summary)
4377 @findex gnus-summary-mark-as-processable
4378 Mark the current article with the process mark
4379 (@code{gnus-summary-mark-as-processable}).
4380 @findex gnus-summary-unmark-as-processable
4384 @kindex M P u (Summary)
4385 @kindex M-# (Summary)
4386 Remove the process mark, if any, from the current article
4387 (@code{gnus-summary-unmark-as-processable}).
4390 @kindex M P U (Summary)
4391 @findex gnus-summary-unmark-all-processable
4392 Remove the process mark from all articles
4393 (@code{gnus-summary-unmark-all-processable}).
4396 @kindex M P i (Summary)
4397 @findex gnus-uu-invert-processable
4398 Invert the list of process marked articles
4399 (@code{gnus-uu-invert-processable}).
4402 @kindex M P R (Summary)
4403 @findex gnus-uu-mark-by-regexp
4404 Mark articles that have a @code{Subject} header that matches a regular
4405 expression (@code{gnus-uu-mark-by-regexp}).
4408 @kindex M P r (Summary)
4409 @findex gnus-uu-mark-region
4410 Mark articles in region (@code{gnus-uu-mark-region}).
4413 @kindex M P t (Summary)
4414 @findex gnus-uu-mark-thread
4415 Mark all articles in the current (sub)thread
4416 (@code{gnus-uu-mark-thread}).
4419 @kindex M P T (Summary)
4420 @findex gnus-uu-unmark-thread
4421 Unmark all articles in the current (sub)thread
4422 (@code{gnus-uu-unmark-thread}).
4425 @kindex M P v (Summary)
4426 @findex gnus-uu-mark-over
4427 Mark all articles that have a score above the prefix argument
4428 (@code{gnus-uu-mark-over}).
4431 @kindex M P s (Summary)
4432 @findex gnus-uu-mark-series
4433 Mark all articles in the current series (@code{gnus-uu-mark-series}).
4436 @kindex M P S (Summary)
4437 @findex gnus-uu-mark-sparse
4438 Mark all series that have already had some articles marked
4439 (@code{gnus-uu-mark-sparse}).
4442 @kindex M P a (Summary)
4443 @findex gnus-uu-mark-all
4444 Mark all articles in series order (@code{gnus-uu-mark-series}).
4447 @kindex M P b (Summary)
4448 @findex gnus-uu-mark-buffer
4449 Mark all articles in the buffer in the order they appear
4450 (@code{gnus-uu-mark-buffer}).
4453 @kindex M P k (Summary)
4454 @findex gnus-summary-kill-process-mark
4455 Push the current process mark set onto the stack and unmark all articles
4456 (@code{gnus-summary-kill-process-mark}).
4459 @kindex M P y (Summary)
4460 @findex gnus-summary-yank-process-mark
4461 Pop the previous process mark set from the stack and restore it
4462 (@code{gnus-summary-yank-process-mark}).
4465 @kindex M P w (Summary)
4466 @findex gnus-summary-save-process-mark
4467 Push the current process mark set onto the stack
4468 (@code{gnus-summary-save-process-mark}).
4477 It can be convenient to limit the summary buffer to just show some
4478 subset of the articles currently in the group. The effect most limit
4479 commands have is to remove a few (or many) articles from the summary
4482 All limiting commands work on subsets of the articles already fetched
4483 from the servers. None of these commands query the server for
4484 additional articles.
4490 @kindex / / (Summary)
4491 @findex gnus-summary-limit-to-subject
4492 Limit the summary buffer to articles that match some subject
4493 (@code{gnus-summary-limit-to-subject}).
4496 @kindex / a (Summary)
4497 @findex gnus-summary-limit-to-author
4498 Limit the summary buffer to articles that match some author
4499 (@code{gnus-summary-limit-to-author}).
4503 @kindex / u (Summary)
4505 @findex gnus-summary-limit-to-unread
4506 Limit the summary buffer to articles not marked as read
4507 (@code{gnus-summary-limit-to-unread}). If given a prefix, limit the
4508 buffer to articles strictly unread. This means that ticked and
4509 dormant articles will also be excluded.
4512 @kindex / m (Summary)
4513 @findex gnus-summary-limit-to-marks
4514 Ask for a mark and then limit to all articles that have been marked
4515 with that mark (@code{gnus-summary-limit-to-marks}).
4518 @kindex / t (Summary)
4519 @findex gnus-summary-limit-to-age
4520 Ask for a number and then limit the summary buffer to articles older than (or equal to) that number of days
4521 (@code{gnus-summary-limit-to-marks}). If given a prefix, limit to
4522 articles younger than that number of days.
4525 @kindex / n (Summary)
4526 @findex gnus-summary-limit-to-articles
4527 Limit the summary buffer to the current article
4528 (@code{gnus-summary-limit-to-articles}). Uses the process/prefix
4529 convention (@pxref{Process/Prefix}).
4532 @kindex / w (Summary)
4533 @findex gnus-summary-pop-limit
4534 Pop the previous limit off the stack and restore it
4535 (@code{gnus-summary-pop-limit}). If given a prefix, pop all limits off
4539 @kindex / v (Summary)
4540 @findex gnus-summary-limit-to-score
4541 Limit the summary buffer to articles that have a score at or above some
4542 score (@code{gnus-summary-limit-to-score}).
4546 @kindex M S (Summary)
4547 @kindex / E (Summary)
4548 @findex gnus-summary-limit-include-expunged
4549 Include all expunged articles in the limit
4550 (@code{gnus-summary-limit-include-expunged}).
4553 @kindex / D (Summary)
4554 @findex gnus-summary-limit-include-dormant
4555 Include all dormant articles in the limit
4556 (@code{gnus-summary-limit-include-dormant}).
4559 @kindex / * (Summary)
4560 @findex gnus-summary-limit-include-cached
4561 Include all cached articles in the limit
4562 (@code{gnus-summary-limit-include-cached}).
4565 @kindex / d (Summary)
4566 @findex gnus-summary-limit-exclude-dormant
4567 Exclude all dormant articles from the limit
4568 (@code{gnus-summary-limit-exclude-dormant}).
4571 @kindex / T (Summary)
4572 @findex gnus-summary-limit-include-thread
4573 Include all the articles in the current thread in the limit.
4576 @kindex / c (Summary)
4577 @findex gnus-summary-limit-exclude-childless-dormant
4578 Exclude all dormant articles that have no children from the limit
4579 (@code{gnus-summary-limit-exclude-childless-dormant}).
4582 @kindex / C (Summary)
4583 @findex gnus-summary-limit-mark-excluded-as-read
4584 Mark all excluded unread articles as read
4585 (@code{gnus-summary-limit-mark-excluded-as-read}). If given a prefix,
4586 also mark excluded ticked and dormant articles as read.
4594 @cindex article threading
4596 Gnus threads articles by default. @dfn{To thread} is to put responses
4597 to articles directly after the articles they respond to---in a
4598 hierarchical fashion.
4600 Threading is done by looking at the @code{References} headers of the
4601 articles. In a perfect world, this would be enough to build pretty
4602 trees, but unfortunately, the @code{References} header is often broken
4603 or simply missing. Weird news propagation excarcerbates the problem,
4604 so one has to employ other heuristics to get pleasing results. A
4605 plethora of approaches exists, as detailed in horrible detail in
4606 @pxref{Customizing Threading}.
4608 First, a quick overview of the concepts:
4612 The top-most article in a thread; the first article in the thread.
4615 A tree-like article structure.
4618 A small(er) section of this tree-like structure.
4621 Threads often lose their roots due to article expiry, or due to the root
4622 already having been read in a previous session, and not displayed in the
4623 summary buffer. We then typically have many sub-threads that really
4624 belong to one thread, but are without connecting roots. These are
4625 called loose threads.
4627 @item thread gathering
4628 An attempt to gather loose threads into bigger threads.
4630 @item sparse threads
4631 A thread where the missing articles have been ``guessed'' at, and are
4632 displayed as empty lines in the summary buffer.
4638 * Customizing Threading:: Variables you can change to affect the threading.
4639 * Thread Commands:: Thread based commands in the summary buffer.
4643 @node Customizing Threading
4644 @subsection Customizing Threading
4645 @cindex customizing threading
4648 * Loose Threads:: How Gnus gathers loose threads into bigger threads.
4649 * Filling In Threads:: Making the threads displayed look fuller.
4650 * More Threading:: Even more variables for fiddling with threads.
4651 * Low-Level Threading:: You thought it was over... but you were wrong!
4656 @subsubsection Loose Threads
4659 @cindex loose threads
4662 @item gnus-summary-make-false-root
4663 @vindex gnus-summary-make-false-root
4664 If non-@code{nil}, Gnus will gather all loose subtrees into one big tree
4665 and create a dummy root at the top. (Wait a minute. Root at the top?
4666 Yup.) Loose subtrees occur when the real root has expired, or you've
4667 read or killed the root in a previous session.
4669 When there is no real root of a thread, Gnus will have to fudge
4670 something. This variable says what fudging method Gnus should use.
4671 There are four possible values:
4675 \gnusfigure{The Summary Buffer}{390}{
4676 \put(0,0){\epsfig{figure=tmp/summary-adopt.ps,width=7.5cm}}
4677 \put(445,0){\makebox(0,0)[br]{\epsfig{figure=tmp/summary-empty.ps,width=7.5cm}}}
4678 \put(0,400){\makebox(0,0)[tl]{\epsfig{figure=tmp/summary-none.ps,width=7.5cm}}}
4679 \put(445,400){\makebox(0,0)[tr]{\epsfig{figure=tmp/summary-dummy.ps,width=7.5cm}}}
4684 @cindex adopting articles
4689 Gnus will make the first of the orphaned articles the parent. This
4690 parent will adopt all the other articles. The adopted articles will be
4691 marked as such by pointy brackets (@samp{<>}) instead of the standard
4692 square brackets (@samp{[]}). This is the default method.
4695 @vindex gnus-summary-dummy-line-format
4696 Gnus will create a dummy summary line that will pretend to be the
4697 parent. This dummy line does not correspond to any real article, so
4698 selecting it will just select the first real article after the dummy
4699 article. @code{gnus-summary-dummy-line-format} is used to specify the
4700 format of the dummy roots. It accepts only one format spec: @samp{S},
4701 which is the subject of the article. @xref{Formatting Variables}.
4704 Gnus won't actually make any article the parent, but simply leave the
4705 subject field of all orphans except the first empty. (Actually, it will
4706 use @code{gnus-summary-same-subject} as the subject (@pxref{Summary
4710 Don't make any article parent at all. Just gather the threads and
4711 display them after one another.
4714 Don't gather loose threads.
4717 @item gnus-summary-gather-subject-limit
4718 @vindex gnus-summary-gather-subject-limit
4719 Loose threads are gathered by comparing subjects of articles. If this
4720 variable is @code{nil}, Gnus requires an exact match between the
4721 subjects of the loose threads before gathering them into one big
4722 super-thread. This might be too strict a requirement, what with the
4723 presence of stupid newsreaders that chop off long subject lines. If
4724 you think so, set this variable to, say, 20 to require that only the
4725 first 20 characters of the subjects have to match. If you set this
4726 variable to a really low number, you'll find that Gnus will gather
4727 everything in sight into one thread, which isn't very helpful.
4729 @cindex fuzzy article gathering
4730 If you set this variable to the special value @code{fuzzy}, Gnus will
4731 use a fuzzy string comparison algorithm on the subjects (@pxref{Fuzzy
4734 @item gnus-simplify-subject-fuzzy-regexp
4735 @vindex gnus-simplify-subject-fuzzy-regexp
4736 This can either be a regular expression or list of regular expressions
4737 that match strings that will be removed from subjects if fuzzy subject
4738 simplification is used.
4740 @item gnus-simplify-ignored-prefixes
4741 @vindex gnus-simplify-ignored-prefixes
4742 If you set @code{gnus-summary-gather-subject-limit} to something as low
4743 as 10, you might consider setting this variable to something sensible:
4745 @c Written by Michael Ernst <mernst@cs.rice.edu>
4747 (setq gnus-simplify-ignored-prefixes
4753 "wanted" "followup" "summary\\( of\\)?"
4754 "help" "query" "problem" "question"
4755 "answer" "reference" "announce"
4756 "How can I" "How to" "Comparison of"
4761 (mapconcat 'identity
4762 '("for" "for reference" "with" "about")
4764 "\\)?\\]?:?[ \t]*"))
4767 All words that match this regexp will be removed before comparing two
4770 @item gnus-simplify-subject-functions
4771 @vindex gnus-simplify-subject-functions
4772 If non-@code{nil}, this variable overrides
4773 @code{gnus-summary-gather-subject-limit}. This variable should be a
4774 list of functions to apply to the @code{Subject} string iteratively to
4775 arrive at the simplified version of the string.
4777 Useful functions to put in this list include:
4780 @item gnus-simplify-subject-re
4781 @findex gnus-simplify-subject-re
4782 Strip the leading @samp{Re:}.
4784 @item gnus-simplify-subject-fuzzy
4785 @findex gnus-simplify-subject-fuzzy
4788 @item gnus-simplify-whitespace
4789 @findex gnus-simplify-whitespace
4790 Remove excessive whitespace.
4793 You may also write your own functions, of course.
4796 @item gnus-summary-gather-exclude-subject
4797 @vindex gnus-summary-gather-exclude-subject
4798 Since loose thread gathering is done on subjects only, that might lead
4799 to many false hits, especially with certain common subjects like
4800 @samp{} and @samp{(none)}. To make the situation slightly better,
4801 you can use the regexp @code{gnus-summary-gather-exclude-subject} to say
4802 what subjects should be excluded from the gathering process.@*
4803 The default is @samp{^ *$\\|^(none)$}.
4805 @item gnus-summary-thread-gathering-function
4806 @vindex gnus-summary-thread-gathering-function
4807 Gnus gathers threads by looking at @code{Subject} headers. This means
4808 that totally unrelated articles may end up in the same ``thread'', which
4809 is confusing. An alternate approach is to look at all the
4810 @code{Message-ID}s in all the @code{References} headers to find matches.
4811 This will ensure that no gathered threads ever include unrelated
4812 articles, but it also means that people who have posted with broken
4813 newsreaders won't be gathered properly. The choice is yours---plague or
4817 @item gnus-gather-threads-by-subject
4818 @findex gnus-gather-threads-by-subject
4819 This function is the default gathering function and looks at
4820 @code{Subject}s exclusively.
4822 @item gnus-gather-threads-by-references
4823 @findex gnus-gather-threads-by-references
4824 This function looks at @code{References} headers exclusively.
4827 If you want to test gathering by @code{References}, you could say
4831 (setq gnus-summary-thread-gathering-function
4832 'gnus-gather-threads-by-references)
4838 @node Filling In Threads
4839 @subsubsection Filling In Threads
4842 @item gnus-fetch-old-headers
4843 @vindex gnus-fetch-old-headers
4844 If non-@code{nil}, Gnus will attempt to build old threads by fetching
4845 more old headers---headers to articles marked as read. If you
4846 would like to display as few summary lines as possible, but still
4847 connect as many loose threads as possible, you should set this variable
4848 to @code{some} or a number. If you set it to a number, no more than
4849 that number of extra old headers will be fetched. In either case,
4850 fetching old headers only works if the backend you are using carries
4851 overview files---this would normally be @code{nntp}, @code{nnspool} and
4852 @code{nnml}. Also remember that if the root of the thread has been
4853 expired by the server, there's not much Gnus can do about that.
4855 This variable can also be set to @code{invisible}. This won't have any
4856 visible effects, but is useful if you use the @kbd{A T} command a lot
4857 (@pxref{Finding the Parent}).
4859 @item gnus-build-sparse-threads
4860 @vindex gnus-build-sparse-threads
4861 Fetching old headers can be slow. A low-rent similar effect can be
4862 gotten by setting this variable to @code{some}. Gnus will then look at
4863 the complete @code{References} headers of all articles and try to string
4864 together articles that belong in the same thread. This will leave
4865 @dfn{gaps} in the threading display where Gnus guesses that an article
4866 is missing from the thread. (These gaps appear like normal summary
4867 lines. If you select a gap, Gnus will try to fetch the article in
4868 question.) If this variable is @code{t}, Gnus will display all these
4869 ``gaps'' without regard for whether they are useful for completing the
4870 thread or not. Finally, if this variable is @code{more}, Gnus won't cut
4871 off sparse leaf nodes that don't lead anywhere. This variable is
4872 @code{nil} by default.
4877 @node More Threading
4878 @subsubsection More Threading
4881 @item gnus-show-threads
4882 @vindex gnus-show-threads
4883 If this variable is @code{nil}, no threading will be done, and all of
4884 the rest of the variables here will have no effect. Turning threading
4885 off will speed group selection up a bit, but it is sure to make reading
4886 slower and more awkward.
4888 @item gnus-thread-hide-subtree
4889 @vindex gnus-thread-hide-subtree
4890 If non-@code{nil}, all threads will be hidden when the summary buffer is
4893 @item gnus-thread-expunge-below
4894 @vindex gnus-thread-expunge-below
4895 All threads that have a total score (as defined by
4896 @code{gnus-thread-score-function}) less than this number will be
4897 expunged. This variable is @code{nil} by default, which means that no
4898 threads are expunged.
4900 @item gnus-thread-hide-killed
4901 @vindex gnus-thread-hide-killed
4902 if you kill a thread and this variable is non-@code{nil}, the subtree
4905 @item gnus-thread-ignore-subject
4906 @vindex gnus-thread-ignore-subject
4907 Sometimes somebody changes the subject in the middle of a thread. If
4908 this variable is non-@code{nil}, the subject change is ignored. If it
4909 is @code{nil}, which is the default, a change in the subject will result
4912 @item gnus-thread-indent-level
4913 @vindex gnus-thread-indent-level
4914 This is a number that says how much each sub-thread should be indented.
4920 @node Low-Level Threading
4921 @subsubsection Low-Level Threading
4925 @item gnus-parse-headers-hook
4926 @vindex gnus-parse-headers-hook
4927 Hook run before parsing any headers.
4929 @item gnus-alter-header-function
4930 @vindex gnus-alter-header-function
4931 If non-@code{nil}, this function will be called to allow alteration of
4932 article header structures. The function is called with one parameter,
4933 the article header vector, which it may alter in any way. For instance,
4934 if you have a mail-to-news gateway which alters the @code{Message-ID}s
4935 in systematic ways (by adding prefixes and such), you can use this
4936 variable to un-scramble the @code{Message-ID}s so that they are more
4937 meaningful. Here's one example:
4940 (setq gnus-alter-header-function 'my-alter-message-id)
4942 (defun my-alter-message-id (header)
4943 (let ((id (mail-header-id header)))
4945 "\\(<[^<>@@]*\\)\\.?cygnus\\..*@@\\([^<>@@]*>\\)" id)
4947 (concat (match-string 1 id) "@@" (match-string 2 id))
4954 @node Thread Commands
4955 @subsection Thread Commands
4956 @cindex thread commands
4962 @kindex T k (Summary)
4963 @kindex M-C-k (Summary)
4964 @findex gnus-summary-kill-thread
4965 Mark all articles in the current (sub-)thread as read
4966 (@code{gnus-summary-kill-thread}). If the prefix argument is positive,
4967 remove all marks instead. If the prefix argument is negative, tick
4972 @kindex T l (Summary)
4973 @kindex M-C-l (Summary)
4974 @findex gnus-summary-lower-thread
4975 Lower the score of the current (sub-)thread
4976 (@code{gnus-summary-lower-thread}).
4979 @kindex T i (Summary)
4980 @findex gnus-summary-raise-thread
4981 Increase the score of the current (sub-)thread
4982 (@code{gnus-summary-raise-thread}).
4985 @kindex T # (Summary)
4986 @findex gnus-uu-mark-thread
4987 Set the process mark on the current (sub-)thread
4988 (@code{gnus-uu-mark-thread}).
4991 @kindex T M-# (Summary)
4992 @findex gnus-uu-unmark-thread
4993 Remove the process mark from the current (sub-)thread
4994 (@code{gnus-uu-unmark-thread}).
4997 @kindex T T (Summary)
4998 @findex gnus-summary-toggle-threads
4999 Toggle threading (@code{gnus-summary-toggle-threads}).
5002 @kindex T s (Summary)
5003 @findex gnus-summary-show-thread
5004 Expose the (sub-)thread hidden under the current article, if any
5005 (@code{gnus-summary-show-thread}).
5008 @kindex T h (Summary)
5009 @findex gnus-summary-hide-thread
5010 Hide the current (sub-)thread (@code{gnus-summary-hide-thread}).
5013 @kindex T S (Summary)
5014 @findex gnus-summary-show-all-threads
5015 Expose all hidden threads (@code{gnus-summary-show-all-threads}).
5018 @kindex T H (Summary)
5019 @findex gnus-summary-hide-all-threads
5020 Hide all threads (@code{gnus-summary-hide-all-threads}).
5023 @kindex T t (Summary)
5024 @findex gnus-summary-rethread-current
5025 Re-thread the current article's thread
5026 (@code{gnus-summary-rethread-current}). This works even when the
5027 summary buffer is otherwise unthreaded.
5030 @kindex T ^ (Summary)
5031 @findex gnus-summary-reparent-thread
5032 Make the current article the child of the marked (or previous) article
5033 (@code{gnus-summary-reparent-thread}).
5037 The following commands are thread movement commands. They all
5038 understand the numeric prefix.
5043 @kindex T n (Summary)
5044 @findex gnus-summary-next-thread
5045 Go to the next thread (@code{gnus-summary-next-thread}).
5048 @kindex T p (Summary)
5049 @findex gnus-summary-prev-thread
5050 Go to the previous thread (@code{gnus-summary-prev-thread}).
5053 @kindex T d (Summary)
5054 @findex gnus-summary-down-thread
5055 Descend the thread (@code{gnus-summary-down-thread}).
5058 @kindex T u (Summary)
5059 @findex gnus-summary-up-thread
5060 Ascend the thread (@code{gnus-summary-up-thread}).
5063 @kindex T o (Summary)
5064 @findex gnus-summary-top-thread
5065 Go to the top of the thread (@code{gnus-summary-top-thread}).
5068 @vindex gnus-thread-operation-ignore-subject
5069 If you ignore subject while threading, you'll naturally end up with
5070 threads that have several different subjects in them. If you then issue
5071 a command like `T k' (@code{gnus-summary-kill-thread}) you might not
5072 wish to kill the entire thread, but just those parts of the thread that
5073 have the same subject as the current article. If you like this idea,
5074 you can fiddle with @code{gnus-thread-operation-ignore-subject}. If it
5075 is non-@code{nil} (which it is by default), subjects will be ignored
5076 when doing thread commands. If this variable is @code{nil}, articles in
5077 the same thread with different subjects will not be included in the
5078 operation in question. If this variable is @code{fuzzy}, only articles
5079 that have subjects fuzzily equal will be included (@pxref{Fuzzy
5086 @findex gnus-thread-sort-by-total-score
5087 @findex gnus-thread-sort-by-date
5088 @findex gnus-thread-sort-by-score
5089 @findex gnus-thread-sort-by-subject
5090 @findex gnus-thread-sort-by-author
5091 @findex gnus-thread-sort-by-number
5092 @vindex gnus-thread-sort-functions
5093 If you are using a threaded summary display, you can sort the threads by
5094 setting @code{gnus-thread-sort-functions}, which is a list of functions.
5095 By default, sorting is done on article numbers. Ready-made sorting
5096 predicate functions include @code{gnus-thread-sort-by-number},
5097 @code{gnus-thread-sort-by-author}, @code{gnus-thread-sort-by-subject},
5098 @code{gnus-thread-sort-by-date}, @code{gnus-thread-sort-by-score}, and
5099 @code{gnus-thread-sort-by-total-score}.
5101 Each function takes two threads and returns non-@code{nil} if the first
5102 thread should be sorted before the other. Note that sorting really is
5103 normally done by looking only at the roots of each thread. If you use
5104 more than one function, the primary sort key should be the last function
5105 in the list. You should probably always include
5106 @code{gnus-thread-sort-by-number} in the list of sorting
5107 functions---preferably first. This will ensure that threads that are
5108 equal with respect to the other sort criteria will be displayed in
5109 ascending article order.
5111 If you would like to sort by score, then by subject, and finally by
5112 number, you could do something like:
5115 (setq gnus-thread-sort-functions
5116 '(gnus-thread-sort-by-number
5117 gnus-thread-sort-by-subject
5118 gnus-thread-sort-by-total-score))
5121 The threads that have highest score will be displayed first in the
5122 summary buffer. When threads have the same score, they will be sorted
5123 alphabetically. The threads that have the same score and the same
5124 subject will be sorted by number, which is (normally) the sequence in
5125 which the articles arrived.
5127 If you want to sort by score and then reverse arrival order, you could
5131 (setq gnus-thread-sort-functions
5133 (not (gnus-thread-sort-by-number t1 t2)))
5134 gnus-thread-sort-by-score))
5137 @vindex gnus-thread-score-function
5138 The function in the @code{gnus-thread-score-function} variable (default
5139 @code{+}) is used for calculating the total score of a thread. Useful
5140 functions might be @code{max}, @code{min}, or squared means, or whatever
5143 @findex gnus-article-sort-functions
5144 @findex gnus-article-sort-by-date
5145 @findex gnus-article-sort-by-score
5146 @findex gnus-article-sort-by-subject
5147 @findex gnus-article-sort-by-author
5148 @findex gnus-article-sort-by-number
5149 If you are using an unthreaded display for some strange reason or other,
5150 you have to fiddle with the @code{gnus-article-sort-functions} variable.
5151 It is very similar to the @code{gnus-thread-sort-functions}, except that
5152 it uses slightly different functions for article comparison. Available
5153 sorting predicate functions are @code{gnus-article-sort-by-number},
5154 @code{gnus-article-sort-by-author}, @code{gnus-article-sort-by-subject},
5155 @code{gnus-article-sort-by-date}, and @code{gnus-article-sort-by-score}.
5157 If you want to sort an unthreaded summary display by subject, you could
5161 (setq gnus-article-sort-functions
5162 '(gnus-article-sort-by-number
5163 gnus-article-sort-by-subject))
5168 @node Asynchronous Fetching
5169 @section Asynchronous Article Fetching
5170 @cindex asynchronous article fetching
5171 @cindex article pre-fetch
5174 If you read your news from an @sc{nntp} server that's far away, the
5175 network latencies may make reading articles a chore. You have to wait
5176 for a while after pressing @kbd{n} to go to the next article before the
5177 article appears. Why can't Gnus just go ahead and fetch the article
5178 while you are reading the previous one? Why not, indeed.
5180 First, some caveats. There are some pitfalls to using asynchronous
5181 article fetching, especially the way Gnus does it.
5183 Let's say you are reading article 1, which is short, and article 2 is
5184 quite long, and you are not interested in reading that. Gnus does not
5185 know this, so it goes ahead and fetches article 2. You decide to read
5186 article 3, but since Gnus is in the process of fetching article 2, the
5187 connection is blocked.
5189 To avoid these situations, Gnus will open two (count 'em two)
5190 connections to the server. Some people may think this isn't a very nice
5191 thing to do, but I don't see any real alternatives. Setting up that
5192 extra connection takes some time, so Gnus startup will be slower.
5194 Gnus will fetch more articles than you will read. This will mean that
5195 the link between your machine and the @sc{nntp} server will become more
5196 loaded than if you didn't use article pre-fetch. The server itself will
5197 also become more loaded---both with the extra article requests, and the
5200 Ok, so now you know that you shouldn't really use this thing... unless
5203 @vindex gnus-asynchronous
5204 Here's how: Set @code{gnus-asynchronous} to @code{t}. The rest should
5205 happen automatically.
5207 @vindex gnus-use-article-prefetch
5208 You can control how many articles are to be pre-fetched by setting
5209 @code{gnus-use-article-prefetch}. This is 30 by default, which means
5210 that when you read an article in the group, the backend will pre-fetch
5211 the next 30 articles. If this variable is @code{t}, the backend will
5212 pre-fetch all the articles it can without bound. If it is
5213 @code{nil}, no pre-fetching will be done.
5215 @vindex gnus-async-prefetch-article-p
5216 @findex gnus-async-read-p
5217 There are probably some articles that you don't want to pre-fetch---read
5218 articles, for instance. The @code{gnus-async-prefetch-article-p} variable controls whether an article is to be pre-fetched. This function should
5219 return non-@code{nil} when the article in question is to be
5220 pre-fetched. The default is @code{gnus-async-read-p}, which returns
5221 @code{nil} on read articles. The function is called with an article
5222 data structure as the only parameter.
5224 If, for instance, you wish to pre-fetch only unread articles shorter than 100 lines, you could say something like:
5227 (defun my-async-short-unread-p (data)
5228 "Return non-nil for short, unread articles."
5229 (and (gnus-data-unread-p data)
5230 (< (mail-header-lines (gnus-data-header data))
5233 (setq gnus-async-prefetch-article-p 'my-async-short-unread-p)
5236 These functions will be called many, many times, so they should
5237 preferably be short and sweet to avoid slowing down Gnus too much.
5238 It's probably a good idea to byte-compile things like this.
5240 @vindex gnus-prefetched-article-deletion-strategy
5241 Articles have to be removed from the asynch buffer sooner or later. The
5242 @code{gnus-prefetched-article-deletion-strategy} says when to remove
5243 articles. This is a list that may contain the following elements:
5247 Remove articles when they are read.
5250 Remove articles when exiting the group.
5253 The default value is @code{(read exit)}.
5255 @c @vindex gnus-use-header-prefetch
5256 @c If @code{gnus-use-header-prefetch} is non-@code{nil}, prefetch articles
5257 @c from the next group.
5260 @node Article Caching
5261 @section Article Caching
5262 @cindex article caching
5265 If you have an @emph{extremely} slow @sc{nntp} connection, you may
5266 consider turning article caching on. Each article will then be stored
5267 locally under your home directory. As you may surmise, this could
5268 potentially use @emph{huge} amounts of disk space, as well as eat up all
5269 your inodes so fast it will make your head swim. In vodka.
5271 Used carefully, though, it could be just an easier way to save articles.
5273 @vindex gnus-use-long-file-name
5274 @vindex gnus-cache-directory
5275 @vindex gnus-use-cache
5276 To turn caching on, set @code{gnus-use-cache} to @code{t}. By default,
5277 all articles ticked or marked as dormant will then be copied
5278 over to your local cache (@code{gnus-cache-directory}). Whether this
5279 cache is flat or hierarchal is controlled by the
5280 @code{gnus-use-long-file-name} variable, as usual.
5282 When re-selecting a ticked or dormant article, it will be fetched from the
5283 cache instead of from the server. As articles in your cache will never
5284 expire, this might serve as a method of saving articles while still
5285 keeping them where they belong. Just mark all articles you want to save
5286 as dormant, and don't worry.
5288 When an article is marked as read, is it removed from the cache.
5290 @vindex gnus-cache-remove-articles
5291 @vindex gnus-cache-enter-articles
5292 The entering/removal of articles from the cache is controlled by the
5293 @code{gnus-cache-enter-articles} and @code{gnus-cache-remove-articles}
5294 variables. Both are lists of symbols. The first is @code{(ticked
5295 dormant)} by default, meaning that ticked and dormant articles will be
5296 put in the cache. The latter is @code{(read)} by default, meaning that
5297 articles marked as read are removed from the cache. Possibly
5298 symbols in these two lists are @code{ticked}, @code{dormant},
5299 @code{unread} and @code{read}.
5301 @findex gnus-jog-cache
5302 So where does the massive article-fetching and storing come into the
5303 picture? The @code{gnus-jog-cache} command will go through all
5304 subscribed newsgroups, request all unread articles, score them, and
5305 store them in the cache. You should only ever, ever ever ever, use this
5306 command if 1) your connection to the @sc{nntp} server is really, really,
5307 really slow and 2) you have a really, really, really huge disk.
5308 Seriously. One way to cut down on the number of articles downloaded is
5309 to score unwanted articles down and have them marked as read. They will
5310 not then be downloaded by this command.
5312 @vindex gnus-uncacheable-groups
5313 @vindex gnus-cacheable-groups
5314 It is likely that you do not want caching on all groups. For instance,
5315 if your @code{nnml} mail is located under your home directory, it makes no
5316 sense to cache it somewhere else under your home directory. Unless you
5317 feel that it's neat to use twice as much space.
5319 To limit the caching, you could set @code{gnus-cacheable-groups} to a
5320 regexp of groups to cache, @samp{^nntp} for instance, or set the
5321 @code{gnus-uncacheable-groups} regexp to @samp{^nnml}, for instance.
5322 Both variables are @code{nil} by default. If a group matches both
5323 variables, the group is not cached.
5325 @findex gnus-cache-generate-nov-databases
5326 @findex gnus-cache-generate-active
5327 @vindex gnus-cache-active-file
5328 The cache stores information on what articles it contains in its active
5329 file (@code{gnus-cache-active-file}). If this file (or any other parts
5330 of the cache) becomes all messed up for some reason or other, Gnus
5331 offers two functions that will try to set things right. @kbd{M-x
5332 gnus-cache-generate-nov-databases} will (re)build all the @sc{nov}
5333 files, and @kbd{gnus-cache-generate-active} will (re)generate the active
5337 @node Persistent Articles
5338 @section Persistent Articles
5339 @cindex persistent articles
5341 Closely related to article caching, we have @dfn{persistent articles}.
5342 In fact, it's just a different way of looking at caching, and much more
5343 useful in my opinion.
5345 Say you're reading a newsgroup, and you happen on to some valuable gem
5346 that you want to keep and treasure forever. You'd normally just save it
5347 (using one of the many saving commands) in some file. The problem with
5348 that is that it's just, well, yucky. Ideally you'd prefer just having
5349 the article remain in the group where you found it forever; untouched by
5350 the expiry going on at the news server.
5352 This is what a @dfn{persistent article} is---an article that just won't
5353 be deleted. It's implemented using the normal cache functions, but
5354 you use two explicit commands for managing persistent articles:
5360 @findex gnus-cache-enter-article
5361 Make the current article persistent (@code{gnus-cache-enter-article}).
5364 @kindex M-* (Summary)
5365 @findex gnus-cache-remove-article
5366 Remove the current article from the persistent articles
5367 (@code{gnus-cache-remove-article}). This will normally delete the
5371 Both these commands understand the process/prefix convention.
5373 To avoid having all ticked articles (and stuff) entered into the cache,
5374 you should set @code{gnus-use-cache} to @code{passive} if you're just
5375 interested in persistent articles:
5378 (setq gnus-use-cache 'passive)
5382 @node Article Backlog
5383 @section Article Backlog
5385 @cindex article backlog
5387 If you have a slow connection, but the idea of using caching seems
5388 unappealing to you (and it is, really), you can help the situation some
5389 by switching on the @dfn{backlog}. This is where Gnus will buffer
5390 already read articles so that it doesn't have to re-fetch articles
5391 you've already read. This only helps if you are in the habit of
5392 re-selecting articles you've recently read, of course. If you never do
5393 that, turning the backlog on will slow Gnus down a little bit, and
5394 increase memory usage some.
5396 @vindex gnus-keep-backlog
5397 If you set @code{gnus-keep-backlog} to a number @var{n}, Gnus will store
5398 at most @var{n} old articles in a buffer for later re-fetching. If this
5399 variable is non-@code{nil} and is not a number, Gnus will store
5400 @emph{all} read articles, which means that your Emacs will grow without
5401 bound before exploding and taking your machine down with you. I put
5402 that in there just to keep y'all on your toes.
5404 This variable is @code{nil} by default.
5407 @node Saving Articles
5408 @section Saving Articles
5409 @cindex saving articles
5411 Gnus can save articles in a number of ways. Below is the documentation
5412 for saving articles in a fairly straight-forward fashion (i.e., little
5413 processing of the article is done before it is saved). For a different
5414 approach (uudecoding, unsharing) you should use @code{gnus-uu}
5415 (@pxref{Decoding Articles}).
5417 @vindex gnus-save-all-headers
5418 If @code{gnus-save-all-headers} is non-@code{nil}, Gnus will not delete
5419 unwanted headers before saving the article.
5421 @vindex gnus-saved-headers
5422 If the preceding variable is @code{nil}, all headers that match the
5423 @code{gnus-saved-headers} regexp will be kept, while the rest will be
5424 deleted before saving.
5430 @kindex O o (Summary)
5432 @findex gnus-summary-save-article
5433 @c @icon{gnus-summary-save-article}
5434 Save the current article using the default article saver
5435 (@code{gnus-summary-save-article}).
5438 @kindex O m (Summary)
5439 @findex gnus-summary-save-article-mail
5440 Save the current article in mail format
5441 (@code{gnus-summary-save-article-mail}).
5444 @kindex O r (Summary)
5445 @findex gnus-summary-save-article-rmail
5446 Save the current article in rmail format
5447 (@code{gnus-summary-save-article-rmail}).
5450 @kindex O f (Summary)
5451 @findex gnus-summary-save-article-file
5452 @c @icon{gnus-summary-save-article-file}
5453 Save the current article in plain file format
5454 (@code{gnus-summary-save-article-file}).
5457 @kindex O F (Summary)
5458 @findex gnus-summary-write-article-file
5459 Write the current article in plain file format, overwriting any previous
5460 file contents (@code{gnus-summary-write-article-file}).
5463 @kindex O b (Summary)
5464 @findex gnus-summary-save-article-body-file
5465 Save the current article body in plain file format
5466 (@code{gnus-summary-save-article-body-file}).
5469 @kindex O h (Summary)
5470 @findex gnus-summary-save-article-folder
5471 Save the current article in mh folder format
5472 (@code{gnus-summary-save-article-folder}).
5475 @kindex O v (Summary)
5476 @findex gnus-summary-save-article-vm
5477 Save the current article in a VM folder
5478 (@code{gnus-summary-save-article-vm}).
5481 @kindex O p (Summary)
5482 @findex gnus-summary-pipe-output
5483 Save the current article in a pipe. Uhm, like, what I mean is---Pipe
5484 the current article to a process (@code{gnus-summary-pipe-output}).
5487 @vindex gnus-prompt-before-saving
5488 All these commands use the process/prefix convention
5489 (@pxref{Process/Prefix}). If you save bunches of articles using these
5490 functions, you might get tired of being prompted for files to save each
5491 and every article in. The prompting action is controlled by
5492 the @code{gnus-prompt-before-saving} variable, which is @code{always} by
5493 default, giving you that excessive prompting action you know and
5494 loathe. If you set this variable to @code{t} instead, you'll be prompted
5495 just once for each series of articles you save. If you like to really
5496 have Gnus do all your thinking for you, you can even set this variable
5497 to @code{nil}, which means that you will never be prompted for files to
5498 save articles in. Gnus will simply save all the articles in the default
5502 @vindex gnus-default-article-saver
5503 You can customize the @code{gnus-default-article-saver} variable to make
5504 Gnus do what you want it to. You can use any of the six ready-made
5505 functions below, or you can create your own.
5509 @item gnus-summary-save-in-rmail
5510 @findex gnus-summary-save-in-rmail
5511 @vindex gnus-rmail-save-name
5512 @findex gnus-plain-save-name
5513 This is the default format, @dfn{babyl}. Uses the function in the
5514 @code{gnus-rmail-save-name} variable to get a file name to save the
5515 article in. The default is @code{gnus-plain-save-name}.
5517 @item gnus-summary-save-in-mail
5518 @findex gnus-summary-save-in-mail
5519 @vindex gnus-mail-save-name
5520 Save in a Unix mail (mbox) file. Uses the function in the
5521 @code{gnus-mail-save-name} variable to get a file name to save the
5522 article in. The default is @code{gnus-plain-save-name}.
5524 @item gnus-summary-save-in-file
5525 @findex gnus-summary-save-in-file
5526 @vindex gnus-file-save-name
5527 @findex gnus-numeric-save-name
5528 Append the article straight to an ordinary file. Uses the function in
5529 the @code{gnus-file-save-name} variable to get a file name to save the
5530 article in. The default is @code{gnus-numeric-save-name}.
5532 @item gnus-summary-save-body-in-file
5533 @findex gnus-summary-save-body-in-file
5534 Append the article body to an ordinary file. Uses the function in the
5535 @code{gnus-file-save-name} variable to get a file name to save the
5536 article in. The default is @code{gnus-numeric-save-name}.
5538 @item gnus-summary-save-in-folder
5539 @findex gnus-summary-save-in-folder
5540 @findex gnus-folder-save-name
5541 @findex gnus-Folder-save-name
5542 @vindex gnus-folder-save-name
5545 Save the article to an MH folder using @code{rcvstore} from the MH
5546 library. Uses the function in the @code{gnus-folder-save-name} variable
5547 to get a file name to save the article in. The default is
5548 @code{gnus-folder-save-name}, but you can also use
5549 @code{gnus-Folder-save-name}, which creates capitalized names.
5551 @item gnus-summary-save-in-vm
5552 @findex gnus-summary-save-in-vm
5553 Save the article in a VM folder. You have to have the VM mail
5554 reader to use this setting.
5557 @vindex gnus-article-save-directory
5558 All of these functions, except for the last one, will save the article
5559 in the @code{gnus-article-save-directory}, which is initialized from the
5560 @code{SAVEDIR} environment variable. This is @file{~/News/} by
5563 As you can see above, the functions use different functions to find a
5564 suitable name of a file to save the article in. Below is a list of
5565 available functions that generate names:
5569 @item gnus-Numeric-save-name
5570 @findex gnus-Numeric-save-name
5571 File names like @file{~/News/Alt.andrea-dworkin/45}.
5573 @item gnus-numeric-save-name
5574 @findex gnus-numeric-save-name
5575 File names like @file{~/News/alt.andrea-dworkin/45}.
5577 @item gnus-Plain-save-name
5578 @findex gnus-Plain-save-name
5579 File names like @file{~/News/Alt.andrea-dworkin}.
5581 @item gnus-plain-save-name
5582 @findex gnus-plain-save-name
5583 File names like @file{~/News/alt.andrea-dworkin}.
5586 @vindex gnus-split-methods
5587 You can have Gnus suggest where to save articles by plonking a regexp into
5588 the @code{gnus-split-methods} alist. For instance, if you would like to
5589 save articles related to Gnus in the file @file{gnus-stuff}, and articles
5590 related to VM in @code{vm-stuff}, you could set this variable to something
5594 (("^Subject:.*gnus\\|^Newsgroups:.*gnus" "gnus-stuff")
5595 ("^Subject:.*vm\\|^Xref:.*vm" "vm-stuff")
5596 (my-choosing-function "../other-dir/my-stuff")
5597 ((equal gnus-newsgroup-name "mail.misc") "mail-stuff"))
5600 We see that this is a list where each element is a list that has two
5601 elements---the @dfn{match} and the @dfn{file}. The match can either be
5602 a string (in which case it is used as a regexp to match on the article
5603 head); it can be a symbol (which will be called as a function with the
5604 group name as a parameter); or it can be a list (which will be
5605 @code{eval}ed). If any of these actions have a non-@code{nil} result,
5606 the @dfn{file} will be used as a default prompt. In addition, the
5607 result of the operation itself will be used if the function or form
5608 called returns a string or a list of strings.
5610 You basically end up with a list of file names that might be used when
5611 saving the current article. (All ``matches'' will be used.) You will
5612 then be prompted for what you really want to use as a name, with file
5613 name completion over the results from applying this variable.
5615 This variable is @code{((gnus-article-archive-name))} by default, which
5616 means that Gnus will look at the articles it saves for an
5617 @code{Archive-name} line and use that as a suggestion for the file
5620 Here's an example function to clean up file names somewhat. If you have
5621 lots of mail groups called things like
5622 @samp{nnml:mail.whatever}, you may want to chop off the beginning of
5623 these group names before creating the file name to save to. The
5624 following will do just that:
5627 (defun my-save-name (group)
5628 (when (string-match "^nnml:mail." group)
5629 (substring group (match-end 0))))
5631 (setq gnus-split-methods
5632 '((gnus-article-archive-name)
5637 @vindex gnus-use-long-file-name
5638 Finally, you have the @code{gnus-use-long-file-name} variable. If it is
5639 @code{nil}, all the preceding functions will replace all periods
5640 (@samp{.}) in the group names with slashes (@samp{/})---which means that
5641 the functions will generate hierarchies of directories instead of having
5642 all the files in the top level directory
5643 (@file{~/News/alt/andrea-dworkin} instead of
5644 @file{~/News/alt.andrea-dworkin}.) This variable is @code{t} by default
5645 on most systems. However, for historical reasons, this is @code{nil} on
5646 Xenix and usg-unix-v machines by default.
5648 This function also affects kill and score file names. If this variable
5649 is a list, and the list contains the element @code{not-score}, long file
5650 names will not be used for score files, if it contains the element
5651 @code{not-save}, long file names will not be used for saving, and if it
5652 contains the element @code{not-kill}, long file names will not be used
5655 If you'd like to save articles in a hierarchy that looks something like
5659 (setq gnus-use-long-file-name '(not-save)) ; to get a hierarchy
5660 (setq gnus-default-article-saver 'gnus-summary-save-in-file) ; no encoding
5663 Then just save with @kbd{o}. You'd then read this hierarchy with
5664 ephemeral @code{nneething} groups---@kbd{G D} in the group buffer, and
5665 the top level directory as the argument (@file{~/News/}). Then just walk
5666 around to the groups/directories with @code{nneething}.
5669 @node Decoding Articles
5670 @section Decoding Articles
5671 @cindex decoding articles
5673 Sometime users post articles (or series of articles) that have been
5674 encoded in some way or other. Gnus can decode them for you.
5677 * Uuencoded Articles:: Uudecode articles.
5678 * Shell Archives:: Unshar articles.
5679 * PostScript Files:: Split PostScript.
5680 * Other Files:: Plain save and binhex.
5681 * Decoding Variables:: Variables for a happy decoding.
5682 * Viewing Files:: You want to look at the result of the decoding?
5686 @cindex article series
5687 All these functions use the process/prefix convention
5688 (@pxref{Process/Prefix}) for finding out what articles to work on, with
5689 the extension that a ``single article'' means ``a single series''. Gnus
5690 can find out by itself what articles belong to a series, decode all the
5691 articles and unpack/view/save the resulting file(s).
5693 Gnus guesses what articles are in the series according to the following
5694 simplish rule: The subjects must be (nearly) identical, except for the
5695 last two numbers of the line. (Spaces are largely ignored, however.)
5697 For example: If you choose a subject called @samp{cat.gif (2/3)}, Gnus
5698 will find all the articles that match the regexp @samp{^cat.gif
5699 ([0-9]+/[0-9]+).*$}.
5701 Subjects that are non-standard, like @samp{cat.gif (2/3) Part 6 of a
5702 series}, will not be properly recognized by any of the automatic viewing
5703 commands, and you have to mark the articles manually with @kbd{#}.
5706 @node Uuencoded Articles
5707 @subsection Uuencoded Articles
5709 @cindex uuencoded articles
5714 @kindex X u (Summary)
5715 @findex gnus-uu-decode-uu
5716 @c @icon{gnus-uu-decode-uu}
5717 Uudecodes the current series (@code{gnus-uu-decode-uu}).
5720 @kindex X U (Summary)
5721 @findex gnus-uu-decode-uu-and-save
5722 Uudecodes and saves the current series
5723 (@code{gnus-uu-decode-uu-and-save}).
5726 @kindex X v u (Summary)
5727 @findex gnus-uu-decode-uu-view
5728 Uudecodes and views the current series (@code{gnus-uu-decode-uu-view}).
5731 @kindex X v U (Summary)
5732 @findex gnus-uu-decode-uu-and-save-view
5733 Uudecodes, views and saves the current series
5734 (@code{gnus-uu-decode-uu-and-save-view}).
5738 Remember that these all react to the presence of articles marked with
5739 the process mark. If, for instance, you'd like to decode and save an
5740 entire newsgroup, you'd typically do @kbd{M P a}
5741 (@code{gnus-uu-mark-all}) and then @kbd{X U}
5742 (@code{gnus-uu-decode-uu-and-save}).
5744 All this is very much different from how @code{gnus-uu} worked with
5745 @sc{gnus 4.1}, where you had explicit keystrokes for everything under
5746 the sun. This version of @code{gnus-uu} generally assumes that you mark
5747 articles in some way (@pxref{Setting Process Marks}) and then press
5750 @vindex gnus-uu-notify-files
5751 Note: When trying to decode articles that have names matching
5752 @code{gnus-uu-notify-files}, which is hard-coded to
5753 @samp{[Cc][Ii][Nn][Dd][Yy][0-9]+.\\(gif\\|jpg\\)}, @code{gnus-uu} will
5754 automatically post an article on @samp{comp.unix.wizards} saying that
5755 you have just viewed the file in question. This feature can't be turned
5759 @node Shell Archives
5760 @subsection Shell Archives
5762 @cindex shell archives
5763 @cindex shared articles
5765 Shell archives (``shar files'') used to be a popular way to distribute
5766 sources, but it isn't used all that much today. In any case, we have
5767 some commands to deal with these:
5772 @kindex X s (Summary)
5773 @findex gnus-uu-decode-unshar
5774 Unshars the current series (@code{gnus-uu-decode-unshar}).
5777 @kindex X S (Summary)
5778 @findex gnus-uu-decode-unshar-and-save
5779 Unshars and saves the current series (@code{gnus-uu-decode-unshar-and-save}).
5782 @kindex X v s (Summary)
5783 @findex gnus-uu-decode-unshar-view
5784 Unshars and views the current series (@code{gnus-uu-decode-unshar-view}).
5787 @kindex X v S (Summary)
5788 @findex gnus-uu-decode-unshar-and-save-view
5789 Unshars, views and saves the current series
5790 (@code{gnus-uu-decode-unshar-and-save-view}).
5794 @node PostScript Files
5795 @subsection PostScript Files
5801 @kindex X p (Summary)
5802 @findex gnus-uu-decode-postscript
5803 Unpack the current PostScript series (@code{gnus-uu-decode-postscript}).
5806 @kindex X P (Summary)
5807 @findex gnus-uu-decode-postscript-and-save
5808 Unpack and save the current PostScript series
5809 (@code{gnus-uu-decode-postscript-and-save}).
5812 @kindex X v p (Summary)
5813 @findex gnus-uu-decode-postscript-view
5814 View the current PostScript series
5815 (@code{gnus-uu-decode-postscript-view}).
5818 @kindex X v P (Summary)
5819 @findex gnus-uu-decode-postscript-and-save-view
5820 View and save the current PostScript series
5821 (@code{gnus-uu-decode-postscript-and-save-view}).
5826 @subsection Other Files
5830 @kindex X o (Summary)
5831 @findex gnus-uu-decode-save
5832 Save the current series
5833 (@code{gnus-uu-decode-save}).
5836 @kindex X b (Summary)
5837 @findex gnus-uu-decode-binhex
5838 Unbinhex the current series (@code{gnus-uu-decode-binhex}). This
5839 doesn't really work yet.
5843 @node Decoding Variables
5844 @subsection Decoding Variables
5846 Adjective, not verb.
5849 * Rule Variables:: Variables that say how a file is to be viewed.
5850 * Other Decode Variables:: Other decode variables.
5851 * Uuencoding and Posting:: Variables for customizing uuencoding.
5855 @node Rule Variables
5856 @subsubsection Rule Variables
5857 @cindex rule variables
5859 Gnus uses @dfn{rule variables} to decide how to view a file. All these
5860 variables are of the form
5863 (list '(regexp1 command2)
5870 @item gnus-uu-user-view-rules
5871 @vindex gnus-uu-user-view-rules
5873 This variable is consulted first when viewing files. If you wish to use,
5874 for instance, @code{sox} to convert an @samp{.au} sound file, you could
5877 (setq gnus-uu-user-view-rules
5878 (list '(\"\\\\.au$\" \"sox %s -t .aiff > /dev/audio\")))
5881 @item gnus-uu-user-view-rules-end
5882 @vindex gnus-uu-user-view-rules-end
5883 This variable is consulted if Gnus couldn't make any matches from the
5884 user and default view rules.
5886 @item gnus-uu-user-archive-rules
5887 @vindex gnus-uu-user-archive-rules
5888 This variable can be used to say what commands should be used to unpack
5893 @node Other Decode Variables
5894 @subsubsection Other Decode Variables
5897 @vindex gnus-uu-grabbed-file-functions
5899 @item gnus-uu-grabbed-file-functions
5900 All functions in this list will be called right after each file has been
5901 successfully decoded---so that you can move or view files right away,
5902 and don't have to wait for all files to be decoded before you can do
5903 anything. Ready-made functions you can put in this list are:
5907 @item gnus-uu-grab-view
5908 @findex gnus-uu-grab-view
5911 @item gnus-uu-grab-move
5912 @findex gnus-uu-grab-move
5913 Move the file (if you're using a saving function.)
5916 @item gnus-uu-be-dangerous
5917 @vindex gnus-uu-be-dangerous
5918 Specifies what to do if unusual situations arise during decoding. If
5919 @code{nil}, be as conservative as possible. If @code{t}, ignore things
5920 that didn't work, and overwrite existing files. Otherwise, ask each
5923 @item gnus-uu-ignore-files-by-name
5924 @vindex gnus-uu-ignore-files-by-name
5925 Files with name matching this regular expression won't be viewed.
5927 @item gnus-uu-ignore-files-by-type
5928 @vindex gnus-uu-ignore-files-by-type
5929 Files with a @sc{mime} type matching this variable won't be viewed.
5930 Note that Gnus tries to guess what type the file is based on the name.
5931 @code{gnus-uu} is not a @sc{mime} package (yet), so this is slightly
5934 @item gnus-uu-tmp-dir
5935 @vindex gnus-uu-tmp-dir
5936 Where @code{gnus-uu} does its work.
5938 @item gnus-uu-do-not-unpack-archives
5939 @vindex gnus-uu-do-not-unpack-archives
5940 Non-@code{nil} means that @code{gnus-uu} won't peek inside archives
5941 looking for files to display.
5943 @item gnus-uu-view-and-save
5944 @vindex gnus-uu-view-and-save
5945 Non-@code{nil} means that the user will always be asked to save a file
5948 @item gnus-uu-ignore-default-view-rules
5949 @vindex gnus-uu-ignore-default-view-rules
5950 Non-@code{nil} means that @code{gnus-uu} will ignore the default viewing
5953 @item gnus-uu-ignore-default-archive-rules
5954 @vindex gnus-uu-ignore-default-archive-rules
5955 Non-@code{nil} means that @code{gnus-uu} will ignore the default archive
5958 @item gnus-uu-kill-carriage-return
5959 @vindex gnus-uu-kill-carriage-return
5960 Non-@code{nil} means that @code{gnus-uu} will strip all carriage returns
5963 @item gnus-uu-unmark-articles-not-decoded
5964 @vindex gnus-uu-unmark-articles-not-decoded
5965 Non-@code{nil} means that @code{gnus-uu} will mark unsuccessfully
5966 decoded articles as unread.
5968 @item gnus-uu-correct-stripped-uucode
5969 @vindex gnus-uu-correct-stripped-uucode
5970 Non-@code{nil} means that @code{gnus-uu} will @emph{try} to fix
5971 uuencoded files that have had trailing spaces deleted.
5973 @item gnus-uu-pre-uudecode-hook
5974 @vindex gnus-uu-pre-uudecode-hook
5975 Hook run before sending a message to @code{uudecode}.
5977 @item gnus-uu-view-with-metamail
5978 @vindex gnus-uu-view-with-metamail
5980 Non-@code{nil} means that @code{gnus-uu} will ignore the viewing
5981 commands defined by the rule variables and just fudge a @sc{mime}
5982 content type based on the file name. The result will be fed to
5983 @code{metamail} for viewing.
5985 @item gnus-uu-save-in-digest
5986 @vindex gnus-uu-save-in-digest
5987 Non-@code{nil} means that @code{gnus-uu}, when asked to save without
5988 decoding, will save in digests. If this variable is @code{nil},
5989 @code{gnus-uu} will just save everything in a file without any
5990 embellishments. The digesting almost conforms to RFC1153---no easy way
5991 to specify any meaningful volume and issue numbers were found, so I
5992 simply dropped them.
5997 @node Uuencoding and Posting
5998 @subsubsection Uuencoding and Posting
6002 @item gnus-uu-post-include-before-composing
6003 @vindex gnus-uu-post-include-before-composing
6004 Non-@code{nil} means that @code{gnus-uu} will ask for a file to encode
6005 before you compose the article. If this variable is @code{t}, you can
6006 either include an encoded file with @kbd{C-c C-i} or have one included
6007 for you when you post the article.
6009 @item gnus-uu-post-length
6010 @vindex gnus-uu-post-length
6011 Maximum length of an article. The encoded file will be split into how
6012 many articles it takes to post the entire file.
6014 @item gnus-uu-post-threaded
6015 @vindex gnus-uu-post-threaded
6016 Non-@code{nil} means that @code{gnus-uu} will post the encoded file in a
6017 thread. This may not be smart, as no other decoder I have seen is able
6018 to follow threads when collecting uuencoded articles. (Well, I have
6019 seen one package that does that---@code{gnus-uu}, but somehow, I don't
6020 think that counts...) Default is @code{nil}.
6022 @item gnus-uu-post-separate-description
6023 @vindex gnus-uu-post-separate-description
6024 Non-@code{nil} means that the description will be posted in a separate
6025 article. The first article will typically be numbered (0/x). If this
6026 variable is @code{nil}, the description the user enters will be included
6027 at the beginning of the first article, which will be numbered (1/x).
6028 Default is @code{t}.
6034 @subsection Viewing Files
6035 @cindex viewing files
6036 @cindex pseudo-articles
6038 After decoding, if the file is some sort of archive, Gnus will attempt
6039 to unpack the archive and see if any of the files in the archive can be
6040 viewed. For instance, if you have a gzipped tar file @file{pics.tar.gz}
6041 containing the files @file{pic1.jpg} and @file{pic2.gif}, Gnus will
6042 uncompress and de-tar the main file, and then view the two pictures.
6043 This unpacking process is recursive, so if the archive contains archives
6044 of archives, it'll all be unpacked.
6046 Finally, Gnus will normally insert a @dfn{pseudo-article} for each
6047 extracted file into the summary buffer. If you go to these
6048 ``articles'', you will be prompted for a command to run (usually Gnus
6049 will make a suggestion), and then the command will be run.
6051 @vindex gnus-view-pseudo-asynchronously
6052 If @code{gnus-view-pseudo-asynchronously} is @code{nil}, Emacs will wait
6053 until the viewing is done before proceeding.
6055 @vindex gnus-view-pseudos
6056 If @code{gnus-view-pseudos} is @code{automatic}, Gnus will not insert
6057 the pseudo-articles into the summary buffer, but view them
6058 immediately. If this variable is @code{not-confirm}, the user won't even
6059 be asked for a confirmation before viewing is done.
6061 @vindex gnus-view-pseudos-separately
6062 If @code{gnus-view-pseudos-separately} is non-@code{nil}, one
6063 pseudo-article will be created for each file to be viewed. If
6064 @code{nil}, all files that use the same viewing command will be given as
6065 a list of parameters to that command.
6067 @vindex gnus-insert-pseudo-articles
6068 If @code{gnus-insert-pseudo-articles} is non-@code{nil}, insert
6069 pseudo-articles when decoding. It is @code{t} by default.
6071 So; there you are, reading your @emph{pseudo-articles} in your
6072 @emph{virtual newsgroup} from the @emph{virtual server}; and you think:
6073 Why isn't anything real anymore? How did we get here?
6076 @node Article Treatment
6077 @section Article Treatment
6079 Reading through this huge manual, you may have quite forgotten that the
6080 object of newsreaders is to actually, like, read what people have
6081 written. Reading articles. Unfortunately, people are quite bad at
6082 writing, so there are tons of functions and variables to make reading
6083 these articles easier.
6086 * Article Highlighting:: You want to make the article look like fruit salad.
6087 * Article Fontisizing:: Making emphasized text look nice.
6088 * Article Hiding:: You also want to make certain info go away.
6089 * Article Washing:: Lots of way-neat functions to make life better.
6090 * Article Buttons:: Click on URLs, Message-IDs, addresses and the like.
6091 * Article Date:: Grumble, UT!
6092 * Article Signature:: What is a signature?
6096 @node Article Highlighting
6097 @subsection Article Highlighting
6098 @cindex highlighting
6100 Not only do you want your article buffer to look like fruit salad, but
6101 you want it to look like technicolor fruit salad.
6106 @kindex W H a (Summary)
6107 @findex gnus-article-highlight
6108 @findex gnus-article-maybe-highlight
6109 Do much highlighting of the current article
6110 (@code{gnus-article-highlight}). This function highlights header, cited
6111 text, the signature, and adds buttons to the body and the head.
6113 Most users would prefer using @code{gnus-article-maybe-highlight} in
6114 @code{gnus-article-display-hook} (@pxref{Customizing Articles}) instead.
6115 This is a bit less agressive---it highlights only the headers, the
6116 signature and adds buttons.
6119 @kindex W H h (Summary)
6120 @findex gnus-article-highlight-headers
6121 @vindex gnus-header-face-alist
6122 Highlight the headers (@code{gnus-article-highlight-headers}). The
6123 highlighting will be done according to the @code{gnus-header-face-alist}
6124 variable, which is a list where each element has the form @var{(regexp
6125 name content)}. @var{regexp} is a regular expression for matching the
6126 header, @var{name} is the face used for highlighting the header name
6127 (@pxref{Faces and Fonts}) and @var{content} is the face for highlighting
6128 the header value. The first match made will be used. Note that
6129 @var{regexp} shouldn't have @samp{^} prepended---Gnus will add one.
6132 @kindex W H c (Summary)
6133 @findex gnus-article-highlight-citation
6134 Highlight cited text (@code{gnus-article-highlight-citation}).
6136 Some variables to customize the citation highlights:
6139 @vindex gnus-cite-parse-max-size
6141 @item gnus-cite-parse-max-size
6142 If the article size if bigger than this variable (which is 25000 by
6143 default), no citation highlighting will be performed.
6145 @item gnus-cite-prefix-regexp
6146 @vindex gnus-cite-prefix-regexp
6147 Regexp matching the longest possible citation prefix on a line.
6149 @item gnus-cite-max-prefix
6150 @vindex gnus-cite-max-prefix
6151 Maximum possible length for a citation prefix (default 20).
6153 @item gnus-cite-face-list
6154 @vindex gnus-cite-face-list
6155 List of faces used for highlighting citations (@pxref{Faces and Fonts}).
6156 When there are citations from multiple articles in the same message,
6157 Gnus will try to give each citation from each article its own face.
6158 This should make it easier to see who wrote what.
6160 @item gnus-supercite-regexp
6161 @vindex gnus-supercite-regexp
6162 Regexp matching normal Supercite attribution lines.
6164 @item gnus-supercite-secondary-regexp
6165 @vindex gnus-supercite-secondary-regexp
6166 Regexp matching mangled Supercite attribution lines.
6168 @item gnus-cite-minimum-match-count
6169 @vindex gnus-cite-minimum-match-count
6170 Minimum number of identical prefixes we have to see before we believe
6171 that it's a citation.
6173 @item gnus-cite-attribution-prefix
6174 @vindex gnus-cite-attribution-prefix
6175 Regexp matching the beginning of an attribution line.
6177 @item gnus-cite-attribution-suffix
6178 @vindex gnus-cite-attribution-suffix
6179 Regexp matching the end of an attribution line.
6181 @item gnus-cite-attribution-face
6182 @vindex gnus-cite-attribution-face
6183 Face used for attribution lines. It is merged with the face for the
6184 cited text belonging to the attribution.
6190 @kindex W H s (Summary)
6191 @vindex gnus-signature-separator
6192 @vindex gnus-signature-face
6193 @findex gnus-article-highlight-signature
6194 Highlight the signature (@code{gnus-article-highlight-signature}).
6195 Everything after @code{gnus-signature-separator} (@pxref{Article
6196 Signature}) in an article will be considered a signature and will be
6197 highlighted with @code{gnus-signature-face}, which is @code{italic} by
6202 @xref{Customizing Articles} for how to highlight articles automatically.
6205 @node Article Fontisizing
6206 @subsection Article Fontisizing
6208 @cindex article emphasis
6210 @findex gnus-article-emphasize
6211 @kindex W e (Summary)
6212 People commonly add emphasis to words in news articles by writing things
6213 like @samp{_this_} or @samp{*this*}. Gnus can make this look nicer by
6214 running the article through the @kbd{W e}
6215 (@code{gnus-article-emphasize}) command.
6217 @vindex gnus-emphasis-alist
6218 How the emphasis is computed is controlled by the
6219 @code{gnus-emphasis-alist} variable. This is an alist where the first
6220 element is a regular expression to be matched. The second is a number
6221 that says what regular expression grouping is used to find the entire
6222 emphasized word. The third is a number that says what regexp grouping
6223 should be displayed and highlighted. (The text between these two
6224 groupings will be hidden.) The fourth is the face used for
6228 (setq gnus-article-emphasis
6229 '(("_\\(\\w+\\)_" 0 1 gnus-emphasis-underline)
6230 ("\\*\\(\\w+\\)\\*" 0 1 gnus-emphasis-bold)))
6233 @vindex gnus-emphasis-underline
6234 @vindex gnus-emphasis-bold
6235 @vindex gnus-emphasis-italic
6236 @vindex gnus-emphasis-underline-bold
6237 @vindex gnus-emphasis-underline-italic
6238 @vindex gnus-emphasis-bold-italic
6239 @vindex gnus-emphasis-underline-bold-italic
6240 By default, there are seven rules, and they use the following faces:
6241 @code{gnus-emphasis-bold}, @code{gnus-emphasis-italic},
6242 @code{gnus-emphasis-underline}, @code{gnus-emphasis-bold-italic},
6243 @code{gnus-emphasis-underline-italic},
6244 @code{gnus-emphasis-underline-bold}, and
6245 @code{gnus-emphasis-underline-bold-italic}.
6247 If you want to change these faces, you can either use @kbd{M-x
6248 customize}, or you can use @code{copy-face}. For instance, if you want
6249 to make @code{gnus-emphasis-italic} use a red face instead, you could
6253 (copy-face 'red 'gnus-emphasis-italic)
6256 @xref{Customizing Articles} for how to fontize articles automatically.
6259 @node Article Hiding
6260 @subsection Article Hiding
6261 @cindex article hiding
6263 Or rather, hiding certain things in each article. There usually is much
6264 too much cruft in most articles.
6269 @kindex W W a (Summary)
6270 @findex gnus-article-hide
6271 Do quite a lot of hiding on the article buffer
6272 (@kbd{gnus-article-hide}). In particular, this function will hide
6273 headers, PGP, cited text and the signature.
6276 @kindex W W h (Summary)
6277 @findex gnus-article-hide-headers
6278 Hide headers (@code{gnus-article-hide-headers}). @xref{Hiding
6282 @kindex W W b (Summary)
6283 @findex gnus-article-hide-boring-headers
6284 Hide headers that aren't particularly interesting
6285 (@code{gnus-article-hide-boring-headers}). @xref{Hiding Headers}.
6288 @kindex W W s (Summary)
6289 @findex gnus-article-hide-signature
6290 Hide signature (@code{gnus-article-hide-signature}). @xref{Article
6294 @kindex W W p (Summary)
6295 @findex gnus-article-hide-pgp
6296 @vindex gnus-article-hide-pgp-hook
6297 Hide @sc{pgp} signatures (@code{gnus-article-hide-pgp}). The
6298 @code{gnus-article-hide-pgp-hook} hook will be run after a @sc{pgp}
6299 signature has been hidden. For example, to automatically verify
6300 articles that have signatures in them do:
6302 ;;; Hide pgp cruft if any.
6304 (add-hook 'gnus-article-display-hook 'gnus-article-hide-pgp)
6306 ;;; After hiding pgp, verify the message;
6307 ;;; only happens if pgp signature is found.
6309 (add-hook 'gnus-article-hide-pgp-hook
6312 (set-buffer gnus-original-article-buffer)
6317 @kindex W W P (Summary)
6318 @findex gnus-article-hide-pem
6319 Hide @sc{pem} (privacy enhanced messages) cruft
6320 (@code{gnus-article-hide-pem}).
6323 @kindex W W c (Summary)
6324 @findex gnus-article-hide-citation
6325 Hide citation (@code{gnus-article-hide-citation}). Some variables for
6326 customizing the hiding:
6330 @item gnus-cited-opened-text-button-line-format
6331 @itemx gnus-cited-closed-text-button-line-format
6332 @vindex gnus-cited-closed-text-button-line-format
6333 @vindex gnus-cited-opened-text-button-line-format
6334 Gnus adds buttons to show where the cited text has been hidden, and to
6335 allow toggle hiding the text. The format of the variable is specified
6336 by these format-like variable (@pxref{Formatting Variables}). These
6341 Starting point of the hidden text.
6343 Ending point of the hidden text.
6345 Number of characters in the hidden region.
6347 Number of lines of hidden text.
6350 @item gnus-cited-lines-visible
6351 @vindex gnus-cited-lines-visible
6352 The number of lines at the beginning of the cited text to leave shown.
6357 @kindex W W C-c (Summary)
6358 @findex gnus-article-hide-citation-maybe
6360 Hide citation (@code{gnus-article-hide-citation-maybe}) depending on the
6361 following two variables:
6364 @item gnus-cite-hide-percentage
6365 @vindex gnus-cite-hide-percentage
6366 If the cited text is of a bigger percentage than this variable (default
6367 50), hide the cited text.
6369 @item gnus-cite-hide-absolute
6370 @vindex gnus-cite-hide-absolute
6371 The cited text must have at least this length (default 10) before it
6376 @kindex W W C (Summary)
6377 @findex gnus-article-hide-citation-in-followups
6378 Hide cited text in articles that aren't roots
6379 (@code{gnus-article-hide-citation-in-followups}). This isn't very
6380 useful as an interactive command, but might be a handy function to stick
6381 in @code{gnus-article-display-hook} (@pxref{Customizing Articles}).
6385 All these ``hiding'' commands are toggles, but if you give a negative
6386 prefix to these commands, they will show what they have previously
6387 hidden. If you give a positive prefix, they will always hide.
6389 Also @pxref{Article Highlighting} for further variables for
6390 citation customization.
6392 @xref{Customizing Articles} for how to hide article elements
6396 @node Article Washing
6397 @subsection Article Washing
6399 @cindex article washing
6401 We call this ``article washing'' for a really good reason. Namely, the
6402 @kbd{A} key was taken, so we had to use the @kbd{W} key instead.
6404 @dfn{Washing} is defined by us as ``changing something from something to
6405 something else'', but normally results in something looking better.
6411 @kindex W l (Summary)
6412 @findex gnus-summary-stop-page-breaking
6413 Remove page breaks from the current article
6414 (@code{gnus-summary-stop-page-breaking}). @xref{Misc Article} for page
6418 @kindex W r (Summary)
6419 @findex gnus-summary-caesar-message
6420 @c @icon{gnus-summary-caesar-message}
6421 Do a Caesar rotate (rot13) on the article buffer
6422 (@code{gnus-summary-caesar-message}).
6423 Unreadable articles that tell you to read them with Caesar rotate or rot13.
6424 (Typically offensive jokes and such.)
6426 It's commonly called ``rot13'' because each letter is rotated 13
6427 positions in the alphabet, e. g. @samp{B} (letter #2) -> @samp{O} (letter
6428 #15). It is sometimes referred to as ``Caesar rotate'' because Caesar
6429 is rumored to have employed this form of, uh, somewhat weak encryption.
6432 @kindex W t (Summary)
6433 @findex gnus-summary-toggle-header
6434 Toggle whether to display all headers in the article buffer
6435 (@code{gnus-summary-toggle-header}).
6438 @kindex W v (Summary)
6439 @findex gnus-summary-verbose-header
6440 Toggle whether to display all headers in the article buffer permanently
6441 (@code{gnus-summary-verbose-header}).
6444 @kindex W m (Summary)
6445 @findex gnus-summary-toggle-mime
6446 Toggle whether to run the article through @sc{mime} before displaying
6447 (@code{gnus-summary-toggle-mime}).
6450 @kindex W o (Summary)
6451 @findex gnus-article-treat-overstrike
6452 Treat overstrike (@code{gnus-article-treat-overstrike}).
6455 @kindex W d (Summary)
6456 @findex gnus-article-treat-dumbquotes
6457 Treat M******** sm*rtq**t*s (@code{gnus-article-treat-dumbquotes}).
6460 @kindex W w (Summary)
6461 @findex gnus-article-fill-cited-article
6462 Do word wrap (@code{gnus-article-fill-cited-article}). If you use this
6463 function in @code{gnus-article-display-hook}, it should be run fairly
6464 late and certainly after any highlighting.
6466 You can give the command a numerical prefix to specify the width to use
6470 @kindex W c (Summary)
6471 @findex gnus-article-remove-cr
6472 Remove CR (i. e., @samp{^M}s on the end of the lines)
6473 (@code{gnus-article-remove-cr}).
6476 @kindex W q (Summary)
6477 @findex gnus-article-de-quoted-unreadable
6478 Treat quoted-printable (@code{gnus-article-de-quoted-unreadable}).
6479 Quoted-Printable is one common @sc{mime} encoding employed when sending
6480 non-ASCII (i. e., 8-bit) articles. It typically makes strings like
6481 @samp{déjà vu} look like @samp{d=E9j=E0 vu}, which doesn't look very
6485 @kindex W f (Summary)
6487 @findex gnus-article-display-x-face
6488 @findex gnus-article-x-face-command
6489 @vindex gnus-article-x-face-command
6490 @vindex gnus-article-x-face-too-ugly
6496 Look for and display any X-Face headers
6497 (@code{gnus-article-display-x-face}). The command executed by this
6498 function is given by the @code{gnus-article-x-face-command} variable.
6499 If this variable is a string, this string will be executed in a
6500 sub-shell. If it is a function, this function will be called with the
6501 face as the argument. If the @code{gnus-article-x-face-too-ugly} (which
6502 is a regexp) matches the @code{From} header, the face will not be shown.
6503 The default action under Emacs is to fork off an @code{xv} to view the
6504 face; under XEmacs the default action is to display the face before the
6505 @code{From} header. (It's nicer if XEmacs has been compiled with X-Face
6506 support---that will make display somewhat faster. If there's no native
6507 X-Face support, Gnus will try to convert the @code{X-Face} header using
6508 external programs from the @code{pbmplus} package and friends.) If you
6509 want to have this function in the display hook, it should probably come
6513 @kindex W b (Summary)
6514 @findex gnus-article-add-buttons
6515 Add clickable buttons to the article (@code{gnus-article-add-buttons}).
6516 @xref{Article Buttons}
6519 @kindex W B (Summary)
6520 @findex gnus-article-add-buttons-to-head
6521 Add clickable buttons to the article headers
6522 (@code{gnus-article-add-buttons-to-head}).
6525 @kindex W E l (Summary)
6526 @findex gnus-article-strip-leading-blank-lines
6527 Remove all blank lines from the beginning of the article
6528 (@code{gnus-article-strip-leading-blank-lines}).
6531 @kindex W E m (Summary)
6532 @findex gnus-article-strip-multiple-blank-lines
6533 Replace all blank lines with empty lines and then all multiple empty
6534 lines with a single empty line.
6535 (@code{gnus-article-strip-multiple-blank-lines}).
6538 @kindex W E t (Summary)
6539 @findex gnus-article-remove-trailing-blank-lines
6540 Remove all blank lines at the end of the article
6541 (@code{gnus-article-remove-trailing-blank-lines}).
6544 @kindex W E a (Summary)
6545 @findex gnus-article-strip-blank-lines
6546 Do all the three commands above
6547 (@code{gnus-article-strip-blank-lines}).
6550 @kindex W E A (Summary)
6551 @findex gnus-article-strip-all-blank-lines
6552 Remove all blank lines
6553 (@code{gnus-article-strip-all-blank-lines}).
6556 @kindex W E s (Summary)
6557 @findex gnus-article-strip-leading-space
6558 Remove all white space from the beginning of all lines of the article
6559 body (@code{gnus-article-strip-leading-space}).
6563 @xref{Customizing Articles} for how to wash articles automatically.
6566 @node Article Buttons
6567 @subsection Article Buttons
6570 People often include references to other stuff in articles, and it would
6571 be nice if Gnus could just fetch whatever it is that people talk about
6572 with the minimum of fuzz when you hit @kbd{RET} or use the middle mouse
6573 button on these references.
6575 Gnus adds @dfn{buttons} to certain standard references by default:
6576 Well-formed URLs, mail addresses and Message-IDs. This is controlled by
6577 two variables, one that handles article bodies and one that handles
6582 @item gnus-button-alist
6583 @vindex gnus-button-alist
6584 This is an alist where each entry has this form:
6587 (REGEXP BUTTON-PAR USE-P FUNCTION DATA-PAR)
6593 All text that match this regular expression will be considered an
6594 external reference. Here's a typical regexp that matches embedded URLs:
6595 @samp{<URL:\\([^\n\r>]*\\)>}.
6598 Gnus has to know which parts of the matches is to be highlighted. This
6599 is a number that says what sub-expression of the regexp is to be
6600 highlighted. If you want it all highlighted, you use 0 here.
6603 This form will be @code{eval}ed, and if the result is non-@code{nil},
6604 this is considered a match. This is useful if you want extra sifting to
6605 avoid false matches.
6608 This function will be called when you click on this button.
6611 As with @var{button-par}, this is a sub-expression number, but this one
6612 says which part of the match is to be sent as data to @var{function}.
6616 So the full entry for buttonizing URLs is then
6619 ("<URL:\\([^\n\r>]*\\)>" 0 t gnus-button-url 1)
6622 @item gnus-header-button-alist
6623 @vindex gnus-header-button-alist
6624 This is just like the other alist, except that it is applied to the
6625 article head only, and that each entry has an additional element that is
6626 used to say what headers to apply the buttonize coding to:
6629 (HEADER REGEXP BUTTON-PAR USE-P FUNCTION DATA-PAR)
6632 @var{HEADER} is a regular expression.
6634 @item gnus-button-url-regexp
6635 @vindex gnus-button-url-regexp
6636 A regular expression that matches embedded URLs. It is used in the
6637 default values of the variables above.
6639 @item gnus-article-button-face
6640 @vindex gnus-article-button-face
6641 Face used on buttons.
6643 @item gnus-article-mouse-face
6644 @vindex gnus-article-mouse-face
6645 Face used when the mouse cursor is over a button.
6649 @xref{Customizing Articles} for how to buttonize articles automatically.
6653 @subsection Article Date
6655 The date is most likely generated in some obscure timezone you've never
6656 heard of, so it's quite nice to be able to find out what the time was
6657 when the article was sent.
6662 @kindex W T u (Summary)
6663 @findex gnus-article-date-ut
6664 Display the date in UT (aka. GMT, aka ZULU)
6665 (@code{gnus-article-date-ut}).
6668 @kindex W T i (Summary)
6669 @findex gnus-article-date-iso8601
6671 Display the date in international format, aka. ISO 8601
6672 (@code{gnus-article-date-iso8601}).
6675 @kindex W T l (Summary)
6676 @findex gnus-article-date-local
6677 Display the date in the local timezone (@code{gnus-article-date-local}).
6680 @kindex W T s (Summary)
6681 @vindex gnus-article-time-format
6682 @findex gnus-article-date-user
6683 @findex format-time-string
6684 Display the date using a user-defined format
6685 (@code{gnus-article-date-user}). The format is specified by the
6686 @code{gnus-article-time-format} variable, and is a string that's passed
6687 to @code{format-time-string}. See the documentation of that variable
6688 for a list of possible format specs.
6691 @kindex W T e (Summary)
6692 @findex gnus-article-date-lapsed
6693 @findex gnus-start-date-timer
6694 @findex gnus-stop-date-timer
6695 Say how much time has elapsed between the article was posted and now
6696 (@code{gnus-article-date-lapsed}). If you want to have this line
6697 updated continually, you can put
6700 (gnus-start-date-timer)
6703 in your @file{.gnus.el} file, or you can run it off of some hook. If
6704 you want to stop the timer, you can use the @code{gnus-stop-date-timer}
6708 @kindex W T o (Summary)
6709 @findex gnus-article-date-original
6710 Display the original date (@code{gnus-article-date-original}). This can
6711 be useful if you normally use some other conversion function and are
6712 worried that it might be doing something totally wrong. Say, claiming
6713 that the article was posted in 1854. Although something like that is
6714 @emph{totally} impossible. Don't you trust me? *titter*
6718 @xref{Customizing Articles} for how to display the date in your
6719 preferred format automatically.
6722 @node Article Signature
6723 @subsection Article Signature
6725 @cindex article signature
6727 @vindex gnus-signature-separator
6728 Each article is divided into two parts---the head and the body. The
6729 body can be divided into a signature part and a text part. The variable
6730 that says what is to be considered a signature is
6731 @code{gnus-signature-separator}. This is normally the standard
6732 @samp{^-- $} as mandated by son-of-RFC 1036. However, many people use
6733 non-standard signature separators, so this variable can also be a list
6734 of regular expressions to be tested, one by one. (Searches are done
6735 from the end of the body towards the beginning.) One likely value is:
6738 (setq gnus-signature-separator
6739 '("^-- $" ; The standard
6740 "^-- *$" ; A common mangling
6741 "^-------*$" ; Many people just use a looong
6742 ; line of dashes. Shame!
6743 "^ *--------*$" ; Double-shame!
6744 "^________*$" ; Underscores are also popular
6745 "^========*$")) ; Pervert!
6748 The more permissive you are, the more likely it is that you'll get false
6751 @vindex gnus-signature-limit
6752 @code{gnus-signature-limit} provides a limit to what is considered a
6757 If it is an integer, no signature may be longer (in characters) than
6760 If it is a floating point number, no signature may be longer (in lines)
6763 If it is a function, the function will be called without any parameters,
6764 and if it returns @code{nil}, there is no signature in the buffer.
6766 If it is a string, it will be used as a regexp. If it matches, the text
6767 in question is not a signature.
6770 This variable can also be a list where the elements may be of the types
6771 listed above. Here's an example:
6774 (setq gnus-signature-limit
6775 '(200.0 "^---*Forwarded article"))
6778 This means that if there are more than 200 lines after the signature
6779 separator, or the text after the signature separator is matched by
6780 the regular expression @samp{^---*Forwarded article}, then it isn't a
6781 signature after all.
6785 @section MIME Commands
6786 @cindex MIME decoding
6790 @kindex W M w (Summary)
6791 Decode RFC2047-encoded words in the article headers
6792 (@code{gnus-article-decode-mime-words}).
6795 @kindex W M c (Summary)
6796 Decode encoded article bodies as well as charsets
6797 (@code{gnus-article-decode-charset}).
6799 This command looks in the @code{Content-Type} header to determine the
6800 charset. If there is no such header in the article, you can give it a
6801 prefix, which will prompt for the charset to decode as. In regional
6802 groups where people post using some common encoding (but do not include
6803 MIME headers), you can set the @code{charset} group/topic parameter to
6804 the required charset (@pxref{Group Parameters}).
6809 @node Article Commands
6810 @section Article Commands
6817 @kindex A P (Summary)
6818 @vindex gnus-ps-print-hook
6819 @findex gnus-summary-print-article
6820 Generate and print a PostScript image of the article buffer
6821 (@code{gnus-summary-print-article}). @code{gnus-ps-print-hook} will be
6822 run just before printing the buffer.
6827 @node Summary Sorting
6828 @section Summary Sorting
6829 @cindex summary sorting
6831 You can have the summary buffer sorted in various ways, even though I
6832 can't really see why you'd want that.
6837 @kindex C-c C-s C-n (Summary)
6838 @findex gnus-summary-sort-by-number
6839 Sort by article number (@code{gnus-summary-sort-by-number}).
6842 @kindex C-c C-s C-a (Summary)
6843 @findex gnus-summary-sort-by-author
6844 Sort by author (@code{gnus-summary-sort-by-author}).
6847 @kindex C-c C-s C-s (Summary)
6848 @findex gnus-summary-sort-by-subject
6849 Sort by subject (@code{gnus-summary-sort-by-subject}).
6852 @kindex C-c C-s C-d (Summary)
6853 @findex gnus-summary-sort-by-date
6854 Sort by date (@code{gnus-summary-sort-by-date}).
6857 @kindex C-c C-s C-l (Summary)
6858 @findex gnus-summary-sort-by-lines
6859 Sort by lines (@code{gnus-summary-sort-by-lines}).
6862 @kindex C-c C-s C-i (Summary)
6863 @findex gnus-summary-sort-by-score
6864 Sort by score (@code{gnus-summary-sort-by-score}).
6867 These functions will work both when you use threading and when you don't
6868 use threading. In the latter case, all summary lines will be sorted,
6869 line by line. In the former case, sorting will be done on a
6870 root-by-root basis, which might not be what you were looking for. To
6871 toggle whether to use threading, type @kbd{T T} (@pxref{Thread
6875 @node Finding the Parent
6876 @section Finding the Parent
6877 @cindex parent articles
6878 @cindex referring articles
6883 @findex gnus-summary-refer-parent-article
6884 If you'd like to read the parent of the current article, and it is not
6885 displayed in the summary buffer, you might still be able to. That is,
6886 if the current group is fetched by @sc{nntp}, the parent hasn't expired
6887 and the @code{References} in the current article are not mangled, you
6888 can just press @kbd{^} or @kbd{A r}
6889 (@code{gnus-summary-refer-parent-article}). If everything goes well,
6890 you'll get the parent. If the parent is already displayed in the
6891 summary buffer, point will just move to this article.
6893 If given a positive numerical prefix, fetch that many articles back into
6894 the ancestry. If given a negative numerical prefix, fetch just that
6895 ancestor. So if you say @kbd{3 ^}, Gnus will fetch the parent, the
6896 grandparent and the grandgrandparent of the current article. If you say
6897 @kbd{-3 ^}, Gnus will only fetch the grandgrandparent of the current
6901 @findex gnus-summary-refer-references
6902 @kindex A R (Summary)
6903 Fetch all articles mentioned in the @code{References} header of the
6904 article (@code{gnus-summary-refer-references}).
6907 @findex gnus-summary-refer-thread
6908 @kindex A T (Summary)
6909 Display the full thread where the current article appears
6910 (@code{gnus-summary-refer-thread}). This command has to fetch all the
6911 headers in the current group to work, so it usually takes a while. If
6912 you do it often, you may consider setting @code{gnus-fetch-old-headers}
6913 to @code{invisible} (@pxref{Filling In Threads}). This won't have any
6914 visible effects normally, but it'll make this command work a whole lot
6915 faster. Of course, it'll make group entry somewhat slow.
6917 @vindex gnus-refer-thread-limit
6918 The @code{gnus-refer-thread-limit} variable says how many old (i. e.,
6919 articles before the first displayed in the current group) headers to
6920 fetch when doing this command. The default is 200. If @code{t}, all
6921 the available headers will be fetched. This variable can be overridden
6922 by giving the @kbd{A T} command a numerical prefix.
6925 @findex gnus-summary-refer-article
6926 @kindex M-^ (Summary)
6928 @cindex fetching by Message-ID
6929 You can also ask the @sc{nntp} server for an arbitrary article, no
6930 matter what group it belongs to. @kbd{M-^}
6931 (@code{gnus-summary-refer-article}) will ask you for a
6932 @code{Message-ID}, which is one of those long, hard-to-read thingies
6933 that look something like @samp{<38o6up$6f2@@hymir.ifi.uio.no>}. You
6934 have to get it all exactly right. No fuzzy searches, I'm afraid.
6937 The current select method will be used when fetching by
6938 @code{Message-ID} from non-news select method, but you can override this
6939 by giving this command a prefix.
6941 @vindex gnus-refer-article-method
6942 If the group you are reading is located on a backend that does not
6943 support fetching by @code{Message-ID} very well (like @code{nnspool}),
6944 you can set @code{gnus-refer-article-method} to an @sc{nntp} method. It
6945 would, perhaps, be best if the @sc{nntp} server you consult is the one
6946 updating the spool you are reading from, but that's not really
6949 Most of the mail backends support fetching by @code{Message-ID}, but do
6950 not do a particularly excellent job at it. That is, @code{nnmbox} and
6951 @code{nnbabyl} are able to locate articles from any groups, while
6952 @code{nnml} and @code{nnfolder} are only able to locate articles that
6953 have been posted to the current group. (Anything else would be too time
6954 consuming.) @code{nnmh} does not support this at all.
6957 @node Alternative Approaches
6958 @section Alternative Approaches
6960 Different people like to read news using different methods. This being
6961 Gnus, we offer a small selection of minor modes for the summary buffers.
6964 * Pick and Read:: First mark articles and then read them.
6965 * Binary Groups:: Auto-decode all articles.
6970 @subsection Pick and Read
6971 @cindex pick and read
6973 Some newsreaders (like @code{nn} and, uhm, @code{Netnews} on VM/CMS) use
6974 a two-phased reading interface. The user first marks in a summary
6975 buffer the articles she wants to read. Then she starts reading the
6976 articles with just an article buffer displayed.
6978 @findex gnus-pick-mode
6979 @kindex M-x gnus-pick-mode
6980 Gnus provides a summary buffer minor mode that allows
6981 this---@code{gnus-pick-mode}. This basically means that a few process
6982 mark commands become one-keystroke commands to allow easy marking, and
6983 it provides one additional command for switching to the summary buffer.
6985 Here are the available keystrokes when using pick mode:
6990 @findex gnus-pick-article-or-thread
6991 Pick the article or thread on the current line
6992 (@code{gnus-pick-article-or-thread}). If the variable
6993 @code{gnus-thread-hide-subtree} is true, then this key selects the
6994 entire thread when used at the first article of the thread. Otherwise,
6995 it selects just the article. If given a numerical prefix, go to that
6996 thread or article and pick it. (The line number is normally displayed
6997 at the beginning of the summary pick lines.)
7000 @kindex SPACE (Pick)
7001 @findex gnus-pick-next-page
7002 Scroll the summary buffer up one page (@code{gnus-pick-next-page}). If
7003 at the end of the buffer, start reading the picked articles.
7007 @findex gnus-pick-unmark-article-or-thread.
7008 Unpick the thread or article
7009 (@code{gnus-pick-unmark-article-or-thread}). If the variable
7010 @code{gnus-thread-hide-subtree} is true, then this key unpicks the
7011 thread if used at the first article of the thread. Otherwise it unpicks
7012 just the article. You can give this key a numerical prefix to unpick
7013 the thread or article at that line.
7017 @findex gnus-pick-start-reading
7018 @vindex gnus-pick-display-summary
7019 Start reading the picked articles (@code{gnus-pick-start-reading}). If
7020 given a prefix, mark all unpicked articles as read first. If
7021 @code{gnus-pick-display-summary} is non-@code{nil}, the summary buffer
7022 will still be visible when you are reading.
7026 All the normal summary mode commands are still available in the
7027 pick-mode, with the exception of @kbd{u}. However @kbd{!} is available
7028 which is mapped to the same function
7029 @code{gnus-summary-tick-article-forward}.
7031 If this sounds like a good idea to you, you could say:
7034 (add-hook 'gnus-summary-mode-hook 'gnus-pick-mode)
7037 @vindex gnus-pick-mode-hook
7038 @code{gnus-pick-mode-hook} is run in pick minor mode buffers.
7040 @vindex gnus-mark-unpicked-articles-as-read
7041 If @code{gnus-mark-unpicked-articles-as-read} is non-@code{nil}, mark
7042 all unpicked articles as read. The default is @code{nil}.
7044 @vindex gnus-summary-pick-line-format
7045 The summary line format in pick mode is slightly different from the
7046 standard format. At the beginning of each line the line number is
7047 displayed. The pick mode line format is controlled by the
7048 @code{gnus-summary-pick-line-format} variable (@pxref{Formatting
7049 Variables}). It accepts the same format specs that
7050 @code{gnus-summary-line-format} does (@pxref{Summary Buffer Lines}).
7054 @subsection Binary Groups
7055 @cindex binary groups
7057 @findex gnus-binary-mode
7058 @kindex M-x gnus-binary-mode
7059 If you spend much time in binary groups, you may grow tired of hitting
7060 @kbd{X u}, @kbd{n}, @kbd{RET} all the time. @kbd{M-x gnus-binary-mode}
7061 is a minor mode for summary buffers that makes all ordinary Gnus article
7062 selection functions uudecode series of articles and display the result
7063 instead of just displaying the articles the normal way.
7066 @findex gnus-binary-show-article
7067 The only way, in fact, to see the actual articles is the @kbd{g}
7068 command, when you have turned on this mode
7069 (@code{gnus-binary-show-article}).
7071 @vindex gnus-binary-mode-hook
7072 @code{gnus-binary-mode-hook} is called in binary minor mode buffers.
7076 @section Tree Display
7079 @vindex gnus-use-trees
7080 If you don't like the normal Gnus summary display, you might try setting
7081 @code{gnus-use-trees} to @code{t}. This will create (by default) an
7082 additional @dfn{tree buffer}. You can execute all summary mode commands
7085 There are a few variables to customize the tree display, of course:
7088 @item gnus-tree-mode-hook
7089 @vindex gnus-tree-mode-hook
7090 A hook called in all tree mode buffers.
7092 @item gnus-tree-mode-line-format
7093 @vindex gnus-tree-mode-line-format
7094 A format string for the mode bar in the tree mode buffers (@pxref{Mode
7095 Line Formatting}). The default is @samp{Gnus: %%b %S %Z}. For a list
7096 of valid specs, @pxref{Summary Buffer Mode Line}.
7098 @item gnus-selected-tree-face
7099 @vindex gnus-selected-tree-face
7100 Face used for highlighting the selected article in the tree buffer. The
7101 default is @code{modeline}.
7103 @item gnus-tree-line-format
7104 @vindex gnus-tree-line-format
7105 A format string for the tree nodes. The name is a bit of a misnomer,
7106 though---it doesn't define a line, but just the node. The default value
7107 is @samp{%(%[%3,3n%]%)}, which displays the first three characters of
7108 the name of the poster. It is vital that all nodes are of the same
7109 length, so you @emph{must} use @samp{%4,4n}-like specifiers.
7115 The name of the poster.
7117 The @code{From} header.
7119 The number of the article.
7121 The opening bracket.
7123 The closing bracket.
7128 @xref{Formatting Variables}.
7130 Variables related to the display are:
7133 @item gnus-tree-brackets
7134 @vindex gnus-tree-brackets
7135 This is used for differentiating between ``real'' articles and
7136 ``sparse'' articles. The format is @var{((real-open . real-close)
7137 (sparse-open . sparse-close) (dummy-open . dummy-close))}, and the
7138 default is @code{((?[ . ?]) (?( . ?)) (?@{ . ?@}) (?< . ?>))}.
7140 @item gnus-tree-parent-child-edges
7141 @vindex gnus-tree-parent-child-edges
7142 This is a list that contains the characters used for connecting parent
7143 nodes to their children. The default is @code{(?- ?\\ ?|)}.
7147 @item gnus-tree-minimize-window
7148 @vindex gnus-tree-minimize-window
7149 If this variable is non-@code{nil}, Gnus will try to keep the tree
7150 buffer as small as possible to allow more room for the other Gnus
7151 windows. If this variable is a number, the tree buffer will never be
7152 higher than that number. The default is @code{t}. Note that if you
7153 have several windows displayed side-by-side in a frame and the tree
7154 buffer is one of these, minimizing the tree window will also resize all
7155 other windows displayed next to it.
7157 @item gnus-generate-tree-function
7158 @vindex gnus-generate-tree-function
7159 @findex gnus-generate-horizontal-tree
7160 @findex gnus-generate-vertical-tree
7161 The function that actually generates the thread tree. Two predefined
7162 functions are available: @code{gnus-generate-horizontal-tree} and
7163 @code{gnus-generate-vertical-tree} (which is the default).
7167 Here's an example from a horizontal tree buffer:
7170 @{***@}-(***)-[odd]-[Gun]
7180 Here's the same thread displayed in a vertical tree buffer:
7184 |--------------------------\-----\-----\
7185 (***) [Bjo] [Gun] [Gun]
7187 [odd] [Jan] [odd] (***) [Jor]
7189 [Gun] [Eri] [Eri] [odd]
7194 If you're using horizontal trees, it might be nice to display the trees
7195 side-by-side with the summary buffer. You could add something like the
7196 following to your @file{.gnus.el} file:
7199 (setq gnus-use-trees t
7200 gnus-generate-tree-function 'gnus-generate-horizontal-tree
7201 gnus-tree-minimize-window nil)
7202 (gnus-add-configuration
7206 (summary 0.75 point)
7211 @xref{Windows Configuration}.
7214 @node Mail Group Commands
7215 @section Mail Group Commands
7216 @cindex mail group commands
7218 Some commands only make sense in mail groups. If these commands are
7219 invalid in the current group, they will raise a hell and let you know.
7221 All these commands (except the expiry and edit commands) use the
7222 process/prefix convention (@pxref{Process/Prefix}).
7227 @kindex B e (Summary)
7228 @findex gnus-summary-expire-articles
7229 Expire all expirable articles in the group
7230 (@code{gnus-summary-expire-articles}).
7233 @kindex B M-C-e (Summary)
7234 @findex gnus-summary-expire-articles-now
7235 Delete all the expirable articles in the group
7236 (@code{gnus-summary-expire-articles-now}). This means that @strong{all}
7237 articles eligible for expiry in the current group will
7238 disappear forever into that big @file{/dev/null} in the sky.
7241 @kindex B DEL (Summary)
7242 @findex gnus-summary-delete-article
7243 @c @icon{gnus-summary-mail-delete}
7244 Delete the mail article. This is ``delete'' as in ``delete it from your
7245 disk forever and ever, never to return again.'' Use with caution.
7246 (@code{gnus-summary-delete-article}).
7249 @kindex B m (Summary)
7251 @findex gnus-summary-move-article
7252 Move the article from one mail group to another
7253 (@code{gnus-summary-move-article}).
7256 @kindex B c (Summary)
7258 @findex gnus-summary-copy-article
7259 @c @icon{gnus-summary-mail-copy}
7260 Copy the article from one group (mail group or not) to a mail group
7261 (@code{gnus-summary-copy-article}).
7264 @kindex B B (Summary)
7265 @cindex crosspost mail
7266 @findex gnus-summary-crosspost-article
7267 Crosspost the current article to some other group
7268 (@code{gnus-summary-crosspost-article}). This will create a new copy of
7269 the article in the other group, and the Xref headers of the article will
7270 be properly updated.
7273 @kindex B i (Summary)
7274 @findex gnus-summary-import-article
7275 Import an arbitrary file into the current mail newsgroup
7276 (@code{gnus-summary-import-article}). You will be prompted for a file
7277 name, a @code{From} header and a @code{Subject} header.
7280 @kindex B r (Summary)
7281 @findex gnus-summary-respool-article
7282 Respool the mail article (@code{gnus-summary-respool-article}).
7283 @code{gnus-summary-respool-default-method} will be used as the default
7284 select method when respooling. This variable is @code{nil} by default,
7285 which means that the current group select method will be used instead.
7289 @kindex B w (Summary)
7291 @findex gnus-summary-edit-article
7292 @kindex C-c C-c (Article)
7293 Edit the current article (@code{gnus-summary-edit-article}). To finish
7294 editing and make the changes permanent, type @kbd{C-c C-c}
7295 (@kbd{gnus-summary-edit-article-done}). If you give a prefix to the
7296 @kbd{C-c C-c} command, Gnus won't re-highlight the article.
7299 @kindex B q (Summary)
7300 @findex gnus-summary-respool-query
7301 If you want to re-spool an article, you might be curious as to what group
7302 the article will end up in before you do the re-spooling. This command
7303 will tell you (@code{gnus-summary-respool-query}).
7306 @kindex B t (Summary)
7307 @findex gnus-summary-respool-trace
7308 Similarly, this command will display all fancy splitting patterns used
7309 when repooling, if any (@code{gnus-summary-respool-trace}).
7312 @kindex B p (Summary)
7313 @findex gnus-summary-article-posted-p
7314 Some people have a tendency to send you "courtesy" copies when they
7315 follow up to articles you have posted. These usually have a
7316 @code{Newsgroups} header in them, but not always. This command
7317 (@code{gnus-summary-article-posted-p}) will try to fetch the current
7318 article from your news server (or rather, from
7319 @code{gnus-refer-article-method} or @code{gnus-select-method}) and will
7320 report back whether it found the article or not. Even if it says that
7321 it didn't find the article, it may have been posted anyway---mail
7322 propagation is much faster than news propagation, and the news copy may
7323 just not have arrived yet.
7327 @vindex gnus-move-split-methods
7328 @cindex moving articles
7329 If you move (or copy) articles regularly, you might wish to have Gnus
7330 suggest where to put the articles. @code{gnus-move-split-methods} is a
7331 variable that uses the same syntax as @code{gnus-split-methods}
7332 (@pxref{Saving Articles}). You may customize that variable to create
7333 suggestions you find reasonable.
7336 (setq gnus-move-split-methods
7337 '(("^From:.*Lars Magne" "nnml:junk")
7338 ("^Subject:.*gnus" "nnfolder:important")
7339 (".*" "nnml:misc")))
7343 @node Various Summary Stuff
7344 @section Various Summary Stuff
7347 * Summary Group Information:: Information oriented commands.
7348 * Searching for Articles:: Multiple article commands.
7349 * Summary Generation Commands:: (Re)generating the summary buffer.
7350 * Really Various Summary Commands:: Those pesky non-conformant commands.
7354 @vindex gnus-summary-mode-hook
7355 @item gnus-summary-mode-hook
7356 This hook is called when creating a summary mode buffer.
7358 @vindex gnus-summary-generate-hook
7359 @item gnus-summary-generate-hook
7360 This is called as the last thing before doing the threading and the
7361 generation of the summary buffer. It's quite convenient for customizing
7362 the threading variables based on what data the newsgroup has. This hook
7363 is called from the summary buffer after most summary buffer variables
7366 @vindex gnus-summary-prepare-hook
7367 @item gnus-summary-prepare-hook
7368 It is called after the summary buffer has been generated. You might use
7369 it to, for instance, highlight lines or modify the look of the buffer in
7370 some other ungodly manner. I don't care.
7372 @vindex gnus-summary-prepared-hook
7373 @item gnus-summary-prepared-hook
7374 A hook called as the very last thing after the summary buffer has been
7377 @vindex gnus-summary-ignore-duplicates
7378 @item gnus-summary-ignore-duplicates
7379 When Gnus discovers two articles that have the same @code{Message-ID},
7380 it has to do something drastic. No articles are allowed to have the
7381 same @code{Message-ID}, but this may happen when reading mail from some
7382 sources. Gnus allows you to customize what happens with this variable.
7383 If it is @code{nil} (which is the default), Gnus will rename the
7384 @code{Message-ID} (for display purposes only) and display the article as
7385 any other article. If this variable is @code{t}, it won't display the
7386 article---it'll be as if it never existed.
7391 @node Summary Group Information
7392 @subsection Summary Group Information
7397 @kindex H f (Summary)
7398 @findex gnus-summary-fetch-faq
7399 @vindex gnus-group-faq-directory
7400 Try to fetch the FAQ (list of frequently asked questions) for the
7401 current group (@code{gnus-summary-fetch-faq}). Gnus will try to get the
7402 FAQ from @code{gnus-group-faq-directory}, which is usually a directory
7403 on a remote machine. This variable can also be a list of directories.
7404 In that case, giving a prefix to this command will allow you to choose
7405 between the various sites. @code{ange-ftp} or @code{efs} will probably
7406 be used for fetching the file.
7409 @kindex H d (Summary)
7410 @findex gnus-summary-describe-group
7411 Give a brief description of the current group
7412 (@code{gnus-summary-describe-group}). If given a prefix, force
7413 rereading the description from the server.
7416 @kindex H h (Summary)
7417 @findex gnus-summary-describe-briefly
7418 Give an extremely brief description of the most important summary
7419 keystrokes (@code{gnus-summary-describe-briefly}).
7422 @kindex H i (Summary)
7423 @findex gnus-info-find-node
7424 Go to the Gnus info node (@code{gnus-info-find-node}).
7428 @node Searching for Articles
7429 @subsection Searching for Articles
7434 @kindex M-s (Summary)
7435 @findex gnus-summary-search-article-forward
7436 Search through all subsequent articles for a regexp
7437 (@code{gnus-summary-search-article-forward}).
7440 @kindex M-r (Summary)
7441 @findex gnus-summary-search-article-backward
7442 Search through all previous articles for a regexp
7443 (@code{gnus-summary-search-article-backward}).
7447 @findex gnus-summary-execute-command
7448 This command will prompt you for a header field, a regular expression to
7449 match on this field, and a command to be executed if the match is made
7450 (@code{gnus-summary-execute-command}). If given a prefix, search
7454 @kindex M-& (Summary)
7455 @findex gnus-summary-universal-argument
7456 Perform any operation on all articles that have been marked with
7457 the process mark (@code{gnus-summary-universal-argument}).
7460 @node Summary Generation Commands
7461 @subsection Summary Generation Commands
7466 @kindex Y g (Summary)
7467 @findex gnus-summary-prepare
7468 Regenerate the current summary buffer (@code{gnus-summary-prepare}).
7471 @kindex Y c (Summary)
7472 @findex gnus-summary-insert-cached-articles
7473 Pull all cached articles (for the current group) into the summary buffer
7474 (@code{gnus-summary-insert-cached-articles}).
7479 @node Really Various Summary Commands
7480 @subsection Really Various Summary Commands
7485 @kindex C-d (Summary)
7486 @findex gnus-summary-enter-digest-group
7487 If the current article is a collection of other articles (for instance,
7488 a digest), you might use this command to enter a group based on the that
7489 article (@code{gnus-summary-enter-digest-group}). Gnus will try to
7490 guess what article type is currently displayed unless you give a prefix
7491 to this command, which forces a ``digest'' interpretation. Basically,
7492 whenever you see a message that is a collection of other messages of
7493 some format, you @kbd{C-d} and read these messages in a more convenient
7497 @kindex M-C-d (Summary)
7498 @findex gnus-summary-read-document
7499 This command is very similar to the one above, but lets you gather
7500 several documents into one biiig group
7501 (@code{gnus-summary-read-document}). It does this by opening several
7502 @code{nndoc} groups for each document, and then opening an
7503 @code{nnvirtual} group on top of these @code{nndoc} groups. This
7504 command understands the process/prefix convention
7505 (@pxref{Process/Prefix}).
7508 @kindex C-t (Summary)
7509 @findex gnus-summary-toggle-truncation
7510 Toggle truncation of summary lines
7511 (@code{gnus-summary-toggle-truncation}). This will probably confuse the
7512 line centering function in the summary buffer, so it's not a good idea
7513 to have truncation switched off while reading articles.
7517 @findex gnus-summary-expand-window
7518 Expand the summary buffer window (@code{gnus-summary-expand-window}).
7519 If given a prefix, force an @code{article} window configuration.
7522 @kindex M-C-e (Summary)
7523 @findex gnus-summary-edit-parameters
7524 Edit the group parameters (@pxref{Group Parameters}) of the current
7525 group (@code{gnus-summary-edit-parameters}).
7530 @node Exiting the Summary Buffer
7531 @section Exiting the Summary Buffer
7532 @cindex summary exit
7533 @cindex exiting groups
7535 Exiting from the summary buffer will normally update all info on the
7536 group and return you to the group buffer.
7542 @kindex Z Z (Summary)
7544 @findex gnus-summary-exit
7545 @vindex gnus-summary-exit-hook
7546 @vindex gnus-summary-prepare-exit-hook
7547 @c @icon{gnus-summary-exit}
7548 Exit the current group and update all information on the group
7549 (@code{gnus-summary-exit}). @code{gnus-summary-prepare-exit-hook} is
7550 called before doing much of the exiting, which calls
7551 @code{gnus-summary-expire-articles} by default.
7552 @code{gnus-summary-exit-hook} is called after finishing the exit
7553 process. @code{gnus-group-no-more-groups-hook} is run when returning to
7554 group mode having no more (unread) groups.
7558 @kindex Z E (Summary)
7560 @findex gnus-summary-exit-no-update
7561 Exit the current group without updating any information on the group
7562 (@code{gnus-summary-exit-no-update}).
7566 @kindex Z c (Summary)
7568 @findex gnus-summary-catchup-and-exit
7569 @c @icon{gnus-summary-catchup-and-exit}
7570 Mark all unticked articles in the group as read and then exit
7571 (@code{gnus-summary-catchup-and-exit}).
7574 @kindex Z C (Summary)
7575 @findex gnus-summary-catchup-all-and-exit
7576 Mark all articles, even the ticked ones, as read and then exit
7577 (@code{gnus-summary-catchup-all-and-exit}).
7580 @kindex Z n (Summary)
7581 @findex gnus-summary-catchup-and-goto-next-group
7582 Mark all articles as read and go to the next group
7583 (@code{gnus-summary-catchup-and-goto-next-group}).
7586 @kindex Z R (Summary)
7587 @findex gnus-summary-reselect-current-group
7588 Exit this group, and then enter it again
7589 (@code{gnus-summary-reselect-current-group}). If given a prefix, select
7590 all articles, both read and unread.
7594 @kindex Z G (Summary)
7595 @kindex M-g (Summary)
7596 @findex gnus-summary-rescan-group
7597 @c @icon{gnus-summary-mail-get}
7598 Exit the group, check for new articles in the group, and select the
7599 group (@code{gnus-summary-rescan-group}). If given a prefix, select all
7600 articles, both read and unread.
7603 @kindex Z N (Summary)
7604 @findex gnus-summary-next-group
7605 Exit the group and go to the next group
7606 (@code{gnus-summary-next-group}).
7609 @kindex Z P (Summary)
7610 @findex gnus-summary-prev-group
7611 Exit the group and go to the previous group
7612 (@code{gnus-summary-prev-group}).
7615 @kindex Z s (Summary)
7616 @findex gnus-summary-save-newsrc
7617 Save the current number of read/marked articles in the dribble buffer
7618 and then save the dribble buffer (@code{gnus-summary-save-newsrc}). If
7619 given a prefix, also save the @file{.newsrc} file(s). Using this
7620 command will make exit without updating (the @kbd{Q} command) worthless.
7623 @vindex gnus-exit-group-hook
7624 @code{gnus-exit-group-hook} is called when you exit the current
7627 @findex gnus-summary-wake-up-the-dead
7628 @findex gnus-dead-summary-mode
7629 @vindex gnus-kill-summary-on-exit
7630 If you're in the habit of exiting groups, and then changing your mind
7631 about it, you might set @code{gnus-kill-summary-on-exit} to @code{nil}.
7632 If you do that, Gnus won't kill the summary buffer when you exit it.
7633 (Quelle surprise!) Instead it will change the name of the buffer to
7634 something like @samp{*Dead Summary ... *} and install a minor mode
7635 called @code{gnus-dead-summary-mode}. Now, if you switch back to this
7636 buffer, you'll find that all keys are mapped to a function called
7637 @code{gnus-summary-wake-up-the-dead}. So tapping any keys in a dead
7638 summary buffer will result in a live, normal summary buffer.
7640 There will never be more than one dead summary buffer at any one time.
7642 @vindex gnus-use-cross-reference
7643 The data on the current group will be updated (which articles you have
7644 read, which articles you have replied to, etc.) when you exit the
7645 summary buffer. If the @code{gnus-use-cross-reference} variable is
7646 @code{t} (which is the default), articles that are cross-referenced to
7647 this group and are marked as read, will also be marked as read in the
7648 other subscribed groups they were cross-posted to. If this variable is
7649 neither @code{nil} nor @code{t}, the article will be marked as read in
7650 both subscribed and unsubscribed groups (@pxref{Crosspost Handling}).
7653 @node Crosspost Handling
7654 @section Crosspost Handling
7658 Marking cross-posted articles as read ensures that you'll never have to
7659 read the same article more than once. Unless, of course, somebody has
7660 posted it to several groups separately. Posting the same article to
7661 several groups (not cross-posting) is called @dfn{spamming}, and you are
7662 by law required to send nasty-grams to anyone who perpetrates such a
7663 heinous crime. You may want to try NoCeM handling to filter out spam
7666 Remember: Cross-posting is kinda ok, but posting the same article
7667 separately to several groups is not. Massive cross-posting (aka.
7668 @dfn{velveeta}) is to be avoided at all costs, and you can even use the
7669 @code{gnus-summary-mail-crosspost-complaint} command to complain about
7670 excessive crossposting (@pxref{Summary Mail Commands}).
7672 @cindex cross-posting
7675 One thing that may cause Gnus to not do the cross-posting thing
7676 correctly is if you use an @sc{nntp} server that supports @sc{xover}
7677 (which is very nice, because it speeds things up considerably) which
7678 does not include the @code{Xref} header in its @sc{nov} lines. This is
7679 Evil, but all too common, alas, alack. Gnus tries to Do The Right Thing
7680 even with @sc{xover} by registering the @code{Xref} lines of all
7681 articles you actually read, but if you kill the articles, or just mark
7682 them as read without reading them, Gnus will not get a chance to snoop
7683 the @code{Xref} lines out of these articles, and will be unable to use
7684 the cross reference mechanism.
7686 @cindex LIST overview.fmt
7687 @cindex overview.fmt
7688 To check whether your @sc{nntp} server includes the @code{Xref} header
7689 in its overview files, try @samp{telnet your.nntp.server nntp},
7690 @samp{MODE READER} on @code{inn} servers, and then say @samp{LIST
7691 overview.fmt}. This may not work, but if it does, and the last line you
7692 get does not read @samp{Xref:full}, then you should shout and whine at
7693 your news admin until she includes the @code{Xref} header in the
7696 @vindex gnus-nov-is-evil
7697 If you want Gnus to get the @code{Xref}s right all the time, you have to
7698 set @code{gnus-nov-is-evil} to @code{t}, which slows things down
7703 For an alternative approach, @pxref{Duplicate Suppression}.
7706 @node Duplicate Suppression
7707 @section Duplicate Suppression
7709 By default, Gnus tries to make sure that you don't have to read the same
7710 article more than once by utilizing the crossposting mechanism
7711 (@pxref{Crosspost Handling}). However, that simple and efficient
7712 approach may not work satisfactory for some users for various
7717 The @sc{nntp} server may fail to generate the @code{Xref} header. This
7718 is evil and not very common.
7721 The @sc{nntp} server may fail to include the @code{Xref} header in the
7722 @file{.overview} data bases. This is evil and all too common, alas.
7725 You may be reading the same group (or several related groups) from
7726 different @sc{nntp} servers.
7729 You may be getting mail that duplicates articles posted to groups.
7732 I'm sure there are other situations where @code{Xref} handling fails as
7733 well, but these four are the most common situations.
7735 If, and only if, @code{Xref} handling fails for you, then you may
7736 consider switching on @dfn{duplicate suppression}. If you do so, Gnus
7737 will remember the @code{Message-ID}s of all articles you have read or
7738 otherwise marked as read, and then, as if by magic, mark them as read
7739 all subsequent times you see them---in @emph{all} groups. Using this
7740 mechanism is quite likely to be somewhat inefficient, but not overly
7741 so. It's certainly preferable to reading the same articles more than
7744 Duplicate suppression is not a very subtle instrument. It's more like a
7745 sledge hammer than anything else. It works in a very simple
7746 fashion---if you have marked an article as read, it adds this Message-ID
7747 to a cache. The next time it sees this Message-ID, it will mark the
7748 article as read with the @samp{M} mark. It doesn't care what group it
7752 @item gnus-suppress-duplicates
7753 @vindex gnus-suppress-duplicates
7754 If non-@code{nil}, suppress duplicates.
7756 @item gnus-save-duplicate-list
7757 @vindex gnus-save-duplicate-list
7758 If non-@code{nil}, save the list of duplicates to a file. This will
7759 make startup and shutdown take longer, so the default is @code{nil}.
7760 However, this means that only duplicate articles read in a single Gnus
7761 session are suppressed.
7763 @item gnus-duplicate-list-length
7764 @vindex gnus-duplicate-list-length
7765 This variable says how many @code{Message-ID}s to keep in the duplicate
7766 suppression list. The default is 10000.
7768 @item gnus-duplicate-file
7769 @vindex gnus-duplicate-file
7770 The name of the file to store the duplicate suppression list in. The
7771 default is @file{~/News/suppression}.
7774 If you have a tendency to stop and start Gnus often, setting
7775 @code{gnus-save-duplicate-list} to @code{t} is probably a good idea. If
7776 you leave Gnus running for weeks on end, you may have it @code{nil}. On
7777 the other hand, saving the list makes startup and shutdown much slower,
7778 so that means that if you stop and start Gnus often, you should set
7779 @code{gnus-save-duplicate-list} to @code{nil}. Uhm. I'll leave this up
7780 to you to figure out, I think.
7783 @node The Article Buffer
7784 @chapter The Article Buffer
7785 @cindex article buffer
7787 The articles are displayed in the article buffer, of which there is only
7788 one. All the summary buffers share the same article buffer unless you
7789 tell Gnus otherwise.
7792 * Hiding Headers:: Deciding what headers should be displayed.
7793 * Using MIME:: Pushing articles through @sc{mime} before reading them.
7794 * Customizing Articles:: Tailoring the look of the articles.
7795 * Article Keymap:: Keystrokes available in the article buffer.
7796 * Misc Article:: Other stuff.
7800 @node Hiding Headers
7801 @section Hiding Headers
7802 @cindex hiding headers
7803 @cindex deleting headers
7805 The top section of each article is the @dfn{head}. (The rest is the
7806 @dfn{body}, but you may have guessed that already.)
7808 @vindex gnus-show-all-headers
7809 There is a lot of useful information in the head: the name of the person
7810 who wrote the article, the date it was written and the subject of the
7811 article. That's well and nice, but there's also lots of information
7812 most people do not want to see---what systems the article has passed
7813 through before reaching you, the @code{Message-ID}, the
7814 @code{References}, etc. ad nauseum---and you'll probably want to get rid
7815 of some of those lines. If you want to keep all those lines in the
7816 article buffer, you can set @code{gnus-show-all-headers} to @code{t}.
7818 Gnus provides you with two variables for sifting headers:
7822 @item gnus-visible-headers
7823 @vindex gnus-visible-headers
7824 If this variable is non-@code{nil}, it should be a regular expression
7825 that says what headers you wish to keep in the article buffer. All
7826 headers that do not match this variable will be hidden.
7828 For instance, if you only want to see the name of the person who wrote
7829 the article and the subject, you'd say:
7832 (setq gnus-visible-headers "^From:\\|^Subject:")
7835 This variable can also be a list of regexps to match headers to
7838 @item gnus-ignored-headers
7839 @vindex gnus-ignored-headers
7840 This variable is the reverse of @code{gnus-visible-headers}. If this
7841 variable is set (and @code{gnus-visible-headers} is @code{nil}), it
7842 should be a regular expression that matches all lines that you want to
7843 hide. All lines that do not match this variable will remain visible.
7845 For instance, if you just want to get rid of the @code{References} line
7846 and the @code{Xref} line, you might say:
7849 (setq gnus-ignored-headers "^References:\\|^Xref:")
7852 This variable can also be a list of regexps to match headers to
7855 Note that if @code{gnus-visible-headers} is non-@code{nil}, this
7856 variable will have no effect.
7860 @vindex gnus-sorted-header-list
7861 Gnus can also sort the headers for you. (It does this by default.) You
7862 can control the sorting by setting the @code{gnus-sorted-header-list}
7863 variable. It is a list of regular expressions that says in what order
7864 the headers are to be displayed.
7866 For instance, if you want the name of the author of the article first,
7867 and then the subject, you might say something like:
7870 (setq gnus-sorted-header-list '("^From:" "^Subject:"))
7873 Any headers that are to remain visible, but are not listed in this
7874 variable, will be displayed in random order after all the headers listed in this variable.
7876 @findex gnus-article-hide-boring-headers
7877 @vindex gnus-article-display-hook
7878 @vindex gnus-boring-article-headers
7879 You can hide further boring headers by entering
7880 @code{gnus-article-hide-boring-headers} into
7881 @code{gnus-article-display-hook}. What this function does depends on
7882 the @code{gnus-boring-article-headers} variable. It's a list, but this
7883 list doesn't actually contain header names. Instead is lists various
7884 @dfn{boring conditions} that Gnus can check and remove from sight.
7886 These conditions are:
7889 Remove all empty headers.
7891 Remove the @code{Followup-To} header if it is identical to the
7892 @code{Newsgroups} header.
7894 Remove the @code{Reply-To} header if it lists the same address as the
7897 Remove the @code{Newsgroups} header if it only contains the current group
7900 Remove the @code{Date} header if the article is less than three days
7903 Remove the @code{To} header if it is very long.
7905 Remove all @code{To} headers if there are more than one.
7908 To include the four three elements, you could say something like;
7911 (setq gnus-boring-article-headers
7912 '(empty followup-to reply-to))
7915 This is also the default value for this variable.
7919 @section Using @sc{mime}
7922 Mime is a standard for waving your hands through the air, aimlessly,
7923 while people stand around yawning.
7925 @sc{mime}, however, is a standard for encoding your articles, aimlessly,
7926 while all newsreaders die of fear.
7928 @sc{mime} may specify what character set the article uses, the encoding
7929 of the characters, and it also makes it possible to embed pictures and
7930 other naughty stuff in innocent-looking articles.
7932 @vindex gnus-display-mime-function
7933 @findex gnus-display-mime
7934 Gnus pushes @sc{mime} articles through @code{gnus-display-mime-function}
7935 to display the @sc{mime} parts. This is @code{gnus-display-mime} by
7936 default, which creates a bundle of clickable buttons that can be used to
7937 display, save and manipulate the @sc{mime} objects.
7939 The following commands are available when you have placed point over a
7943 @findex gnus-article-press-button
7945 @itemx BUTTON-2 (Article)
7946 Toggle displaying of the @sc{mime} object
7947 (@code{gnus-article-press-button}).
7949 @findex gnus-mime-view-part
7950 @item M-RET (Article)
7952 Prompt for a method, and then view the @sc{mime} object using this
7953 method (@code{gnus-mime-view-part}).
7955 @findex gnus-mime-save-part
7957 Prompt for a file name, and then save the @sc{mime} object
7958 (@code{gnus-mime-save-part}).
7960 @findex gnus-mime-copy-part
7962 Copy the @sc{mime} object to a fresh buffer and display this buffer
7963 (@code{gnus-mime-copy-part}).
7965 @findex gnus-mime-pipe-part
7967 Output the @sc{mime} object to a process (@code{gnus-mime-pipe-part}).
7970 Gnus will display some @sc{mime} objects automatically. The way Gnus
7971 determines which parts to do this with is described in the Emacs MIME
7974 It might be best to just use the toggling functions from the article
7975 buffer to avoid getting nasty surprises. (For instance, you enter the
7976 group @samp{alt.sing-a-long} and, before you know it, @sc{mime} has
7977 decoded the sound file in the article and some horrible sing-a-long song
7978 comes screaming out your speakers, and you can't find the volume button,
7979 because there isn't one, and people are starting to look at you, and you
7980 try to stop the program, but you can't, and you can't find the program
7981 to control the volume, and everybody else in the room suddenly decides
7982 to look at you disdainfully, and you'll feel rather stupid.)
7984 Any similarity to real events and people is purely coincidental. Ahem.
7987 @node Customizing Articles
7988 @section Customizing Articles
7989 @cindex article customization
7991 @vindex gnus-article-display-hook
7992 The @code{gnus-article-display-hook} is called after the article has
7993 been inserted into the article buffer. It is meant to handle all
7994 treatment of the article before it is displayed.
7996 @findex gnus-article-maybe-highlight
7997 @findex gnus-article-maybe-hide-headers
7998 By default this hook just contains
7999 @code{gnus-article-maybe-hide-headers},
8000 @code{gnus-hide-boring-headers}, @code{gnus-article-treat-overstrike},
8001 and @code{gnus-article-maybe-highlight} (and under XEmacs,
8002 @code{gnus-article-display-x-face}), but there are thousands, nay
8003 millions, of functions you can put in this hook. For an overview of
8004 functions @pxref{Article Highlighting}, @pxref{Article Hiding},
8005 @pxref{Article Washing}, @pxref{Article Buttons} and @pxref{Article
8006 Date}. Note that the order of functions in this hook might affect
8007 things, so you may have to fiddle a bit to get the desired results.
8009 You can, of course, write your own functions. The functions are called
8010 from the article buffer, and you can do anything you like, pretty much.
8011 There is no information that you have to keep in the buffer---you can
8012 change everything. However, you shouldn't delete any headers. Instead
8013 make them invisible if you want to make them go away.
8016 @node Article Keymap
8017 @section Article Keymap
8019 Most of the keystrokes in the summary buffer can also be used in the
8020 article buffer. They should behave as if you typed them in the summary
8021 buffer, which means that you don't actually have to have a summary
8022 buffer displayed while reading. You can do it all from the article
8025 A few additional keystrokes are available:
8030 @kindex SPACE (Article)
8031 @findex gnus-article-next-page
8032 Scroll forwards one page (@code{gnus-article-next-page}).
8035 @kindex DEL (Article)
8036 @findex gnus-article-prev-page
8037 Scroll backwards one page (@code{gnus-article-prev-page}).
8040 @kindex C-c ^ (Article)
8041 @findex gnus-article-refer-article
8042 If point is in the neighborhood of a @code{Message-ID} and you press
8043 @kbd{C-c ^}, Gnus will try to get that article from the server
8044 (@code{gnus-article-refer-article}).
8047 @kindex C-c C-m (Article)
8048 @findex gnus-article-mail
8049 Send a reply to the address near point (@code{gnus-article-mail}). If
8050 given a prefix, include the mail.
8054 @findex gnus-article-show-summary
8055 Reconfigure the buffers so that the summary buffer becomes visible
8056 (@code{gnus-article-show-summary}).
8060 @findex gnus-article-describe-briefly
8061 Give a very brief description of the available keystrokes
8062 (@code{gnus-article-describe-briefly}).
8065 @kindex TAB (Article)
8066 @findex gnus-article-next-button
8067 Go to the next button, if any (@code{gnus-article-next-button}). This
8068 only makes sense if you have buttonizing turned on.
8071 @kindex M-TAB (Article)
8072 @findex gnus-article-prev-button
8073 Go to the previous button, if any (@code{gnus-article-prev-button}).
8079 @section Misc Article
8083 @item gnus-single-article-buffer
8084 @vindex gnus-single-article-buffer
8085 If non-@code{nil}, use the same article buffer for all the groups.
8086 (This is the default.) If @code{nil}, each group will have its own
8089 @vindex gnus-article-decode-hook
8090 @item gnus-article-decode-hook
8092 Hook used to decode @sc{mime} articles. The default value is
8093 @code{(article-decode-charset article-decode-encoded-words)}
8095 @vindex gnus-article-prepare-hook
8096 @item gnus-article-prepare-hook
8097 This hook is called right after the article has been inserted into the
8098 article buffer. It is mainly intended for functions that do something
8099 depending on the contents; it should probably not be used for changing
8100 the contents of the article buffer.
8102 @vindex gnus-article-display-hook
8103 @item gnus-article-display-hook
8104 This hook is called as the last thing when displaying an article, and is
8105 intended for modifying the contents of the buffer, doing highlights,
8106 hiding headers, and the like.
8108 @item gnus-article-mode-hook
8109 @vindex gnus-article-mode-hook
8110 Hook called in article mode buffers.
8112 @item gnus-article-mode-syntax-table
8113 @vindex gnus-article-mode-syntax-table
8114 Syntax table used in article buffers. It is initialized from
8115 @code{text-mode-syntax-table}.
8117 @vindex gnus-article-mode-line-format
8118 @item gnus-article-mode-line-format
8119 This variable is a format string along the same lines as
8120 @code{gnus-summary-mode-line-format} (@pxref{Mode Line Formatting}). It
8121 accepts the same format specifications as that variable, with one
8126 The @dfn{wash status} of the article. This is a short string with one
8127 character for each possible article wash operation that may have been
8131 @vindex gnus-break-pages
8133 @item gnus-break-pages
8134 Controls whether @dfn{page breaking} is to take place. If this variable
8135 is non-@code{nil}, the articles will be divided into pages whenever a
8136 page delimiter appears in the article. If this variable is @code{nil},
8137 paging will not be done.
8139 @item gnus-page-delimiter
8140 @vindex gnus-page-delimiter
8141 This is the delimiter mentioned above. By default, it is @samp{^L}
8146 @node Composing Messages
8147 @chapter Composing Messages
8148 @cindex composing messages
8151 @cindex sending mail
8156 @kindex C-c C-c (Post)
8157 All commands for posting and mailing will put you in a message buffer
8158 where you can edit the article all you like, before you send the article
8159 by pressing @kbd{C-c C-c}. @xref{Top, , Top, message, The Message
8160 Manual}. If you are in a foreign news group, and you wish to post the
8161 article using the foreign server, you can give a prefix to @kbd{C-c C-c}
8162 to make Gnus try to post using the foreign server.
8165 * Mail:: Mailing and replying.
8166 * Post:: Posting and following up.
8167 * Posting Server:: What server should you post via?
8168 * Mail and Post:: Mailing and posting at the same time.
8169 * Archived Messages:: Where Gnus stores the messages you've sent.
8170 * Posting Styles:: An easier way to specify who you are.
8171 * Drafts:: Postponing messages and rejected messages.
8172 * Rejected Articles:: What happens if the server doesn't like your article?
8175 Also see @pxref{Canceling and Superseding} for information on how to
8176 remove articles you shouldn't have posted.
8182 Variables for customizing outgoing mail:
8185 @item gnus-uu-digest-headers
8186 @vindex gnus-uu-digest-headers
8187 List of regexps to match headers included in digested messages. The
8188 headers will be included in the sequence they are matched.
8190 @item gnus-add-to-list
8191 @vindex gnus-add-to-list
8192 If non-@code{nil}, add a @code{to-list} group parameter to mail groups
8193 that have none when you do a @kbd{a}.
8201 Variables for composing news articles:
8204 @item gnus-sent-message-ids-file
8205 @vindex gnus-sent-message-ids-file
8206 Gnus will keep a @code{Message-ID} history file of all the mails it has
8207 sent. If it discovers that it has already sent a mail, it will ask the
8208 user whether to re-send the mail. (This is primarily useful when
8209 dealing with @sc{soup} packets and the like where one is apt to send the
8210 same packet multiple times.) This variable says what the name of this
8211 history file is. It is @file{~/News/Sent-Message-IDs} by default. Set
8212 this variable to @code{nil} if you don't want Gnus to keep a history
8215 @item gnus-sent-message-ids-length
8216 @vindex gnus-sent-message-ids-length
8217 This variable says how many @code{Message-ID}s to keep in the history
8218 file. It is 1000 by default.
8223 @node Posting Server
8224 @section Posting Server
8226 When you press those magical @kbd{C-c C-c} keys to ship off your latest
8227 (extremely intelligent, of course) article, where does it go?
8229 Thank you for asking. I hate you.
8231 @vindex gnus-post-method
8233 It can be quite complicated. Normally, Gnus will use the same native
8234 server. However. If your native server doesn't allow posting, just
8235 reading, you probably want to use some other server to post your
8236 (extremely intelligent and fabulously interesting) articles. You can
8237 then set the @code{gnus-post-method} to some other method:
8240 (setq gnus-post-method '(nnspool ""))
8243 Now, if you've done this, and then this server rejects your article, or
8244 this server is down, what do you do then? To override this variable you
8245 can use a non-zero prefix to the @kbd{C-c C-c} command to force using
8246 the ``current'' server for posting.
8248 If you give a zero prefix (i.e., @kbd{C-u 0 C-c C-c}) to that command,
8249 Gnus will prompt you for what method to use for posting.
8251 You can also set @code{gnus-post-method} to a list of select methods.
8252 If that's the case, Gnus will always prompt you for what method to use
8255 Finally, if you want to always post using the same select method as
8256 you're reading from (which might be convenient if you're reading lots of
8257 groups from different private servers), you can set this variable to
8262 @section Mail and Post
8264 Here's a list of variables relevant to both mailing and
8268 @item gnus-mailing-list-groups
8269 @findex gnus-mailing-list-groups
8270 @cindex mailing lists
8272 If your news server offers groups that are really mailing lists
8273 gatewayed to the @sc{nntp} server, you can read those groups without
8274 problems, but you can't post/followup to them without some difficulty.
8275 One solution is to add a @code{to-address} to the group parameters
8276 (@pxref{Group Parameters}). An easier thing to do is set the
8277 @code{gnus-mailing-list-groups} to a regexp that matches the groups that
8278 really are mailing lists. Then, at least, followups to the mailing
8279 lists will work most of the time. Posting to these groups (@kbd{a}) is
8280 still a pain, though.
8284 You may want to do spell-checking on messages that you send out. Or, if
8285 you don't want to spell-check by hand, you could add automatic
8286 spell-checking via the @code{ispell} package:
8289 @findex ispell-message
8291 (add-hook 'message-send-hook 'ispell-message)
8295 @node Archived Messages
8296 @section Archived Messages
8297 @cindex archived messages
8298 @cindex sent messages
8300 Gnus provides a few different methods for storing the mail and news you
8301 send. The default method is to use the @dfn{archive virtual server} to
8302 store the messages. If you want to disable this completely, the
8303 @code{gnus-message-archive-group} variable should be @code{nil}, which
8306 @vindex gnus-message-archive-method
8307 @code{gnus-message-archive-method} says what virtual server Gnus is to
8308 use to store sent messages. The default is:
8312 (nnfolder-directory "~/Mail/archive")
8313 (nnfolder-active-file "~/Mail/archive/active")
8314 (nnfolder-get-new-mail nil)
8315 (nnfolder-inhibit-expiry t))
8318 You can, however, use any mail select method (@code{nnml},
8319 @code{nnmbox}, etc.). @code{nnfolder} is a quite likeable select method
8320 for doing this sort of thing, though. If you don't like the default
8321 directory chosen, you could say something like:
8324 (setq gnus-message-archive-method
8325 '(nnfolder "archive"
8326 (nnfolder-inhibit-expiry t)
8327 (nnfolder-active-file "~/News/sent-mail/active")
8328 (nnfolder-directory "~/News/sent-mail/")))
8331 @vindex gnus-message-archive-group
8333 Gnus will insert @code{Gcc} headers in all outgoing messages that point
8334 to one or more group(s) on that server. Which group to use is
8335 determined by the @code{gnus-message-archive-group} variable.
8337 This variable can be used to do the following:
8341 Messages will be saved in that group.
8342 @item a list of strings
8343 Messages will be saved in all those groups.
8344 @item an alist of regexps, functions and forms
8345 When a key ``matches'', the result is used.
8347 No message archiving will take place. This is the default.
8352 Just saving to a single group called @samp{MisK}:
8354 (setq gnus-message-archive-group "MisK")
8357 Saving to two groups, @samp{MisK} and @samp{safe}:
8359 (setq gnus-message-archive-group '("MisK" "safe"))
8362 Save to different groups based on what group you are in:
8364 (setq gnus-message-archive-group
8365 '(("^alt" "sent-to-alt")
8366 ("mail" "sent-to-mail")
8367 (".*" "sent-to-misc")))
8372 (setq gnus-message-archive-group
8373 '((if (message-news-p)
8378 How about storing all news messages in one file, but storing all mail
8379 messages in one file per month:
8382 (setq gnus-message-archive-group
8383 '((if (message-news-p)
8385 (concat "mail." (format-time-string
8386 "%Y-%m" (current-time))))))
8389 (XEmacs 19.13 doesn't have @code{format-time-string}, so you'll have to
8390 use a different value for @code{gnus-message-archive-group} there.)
8392 Now, when you send a message off, it will be stored in the appropriate
8393 group. (If you want to disable storing for just one particular message,
8394 you can just remove the @code{Gcc} header that has been inserted.) The
8395 archive group will appear in the group buffer the next time you start
8396 Gnus, or the next time you press @kbd{F} in the group buffer. You can
8397 enter it and read the articles in it just like you'd read any other
8398 group. If the group gets really big and annoying, you can simply rename
8399 if (using @kbd{G r} in the group buffer) to something
8400 nice---@samp{misc-mail-september-1995}, or whatever. New messages will
8401 continue to be stored in the old (now empty) group.
8403 That's the default method of archiving sent messages. Gnus offers a
8404 different way for the people who don't like the default method. In that
8405 case you should set @code{gnus-message-archive-group} to @code{nil};
8406 this will disable archiving.
8409 @item gnus-outgoing-message-group
8410 @vindex gnus-outgoing-message-group
8411 All outgoing messages will be put in this group. If you want to store
8412 all your outgoing mail and articles in the group @samp{nnml:archive},
8413 you set this variable to that value. This variable can also be a list of
8416 If you want to have greater control over what group to put each
8417 message in, you can set this variable to a function that checks the
8418 current newsgroup name and then returns a suitable group name (or list
8421 This variable can be used instead of @code{gnus-message-archive-group},
8422 but the latter is the preferred method.
8426 @node Posting Styles
8427 @section Posting Styles
8428 @cindex posting styles
8431 All them variables, they make my head swim.
8433 So what if you want a different @code{Organization} and signature based
8434 on what groups you post to? And you post both from your home machine
8435 and your work machine, and you want different @code{From} lines, and so
8438 @vindex gnus-posting-styles
8439 One way to do stuff like that is to write clever hooks that change the
8440 variables you need to have changed. That's a bit boring, so somebody
8441 came up with the bright idea of letting the user specify these things in
8442 a handy alist. Here's an example of a @code{gnus-posting-styles}
8447 (signature "Peace and happiness")
8448 (organization "What me?"))
8450 (signature "Death to everybody"))
8451 ("comp.emacs.i-love-it"
8452 (organization "Emacs is it")))
8455 As you might surmise from this example, this alist consists of several
8456 @dfn{styles}. Each style will be applicable if the first element
8457 ``matches'', in some form or other. The entire alist will be iterated
8458 over, from the beginning towards the end, and each match will be
8459 applied, which means that attributes in later styles that match override
8460 the same attributes in earlier matching styles. So
8461 @samp{comp.programming.literate} will have the @samp{Death to everybody}
8462 signature and the @samp{What me?} @code{Organization} header.
8464 The first element in each style is called the @code{match}. If it's a
8465 string, then Gnus will try to regexp match it against the group name.
8466 If it's a function symbol, that function will be called with no
8467 arguments. If it's a variable symbol, then the variable will be
8468 referenced. If it's a list, then that list will be @code{eval}ed. In
8469 any case, if this returns a non-@code{nil} value, then the style is said
8472 Each style may contain a arbitrary amount of @dfn{attributes}. Each
8473 attribute consists of a @var{(name . value)} pair. The attribute name
8474 can be one of @code{signature}, @code{signature-file},
8475 @code{organization}, @code{address}, @code{name} or @code{body}. The
8476 attribute name can also be a string. In that case, this will be used as
8477 a header name, and the value will be inserted in the headers of the
8480 The attribute value can be a string (used verbatim), a function (the
8481 return value will be used), a variable (its value will be used) or a
8482 list (it will be @code{eval}ed and the return value will be used).
8484 If you wish to check whether the message you are about to compose is
8485 meant to be a news article or a mail message, you can check the values
8486 of the two dynamically bound variables @code{message-this-is-news} and
8487 @code{message-this-is-mail}.
8489 @vindex message-this-is-mail
8490 @vindex message-this-is-news
8492 So here's a new example:
8495 (setq gnus-posting-styles
8497 (signature-file "~/.signature")
8499 ("X-Home-Page" (getenv "WWW_HOME"))
8500 (organization "People's Front Against MWM"))
8502 (signature my-funny-signature-randomizer))
8503 ((equal (system-name) "gnarly")
8504 (signature my-quote-randomizer))
8505 (message-this-is-news
8506 (signature my-news-signature))
8507 (posting-from-work-p
8508 (signature-file "~/.work-signature")
8509 (address "user@@bar.foo")
8510 (body "You are fired.\n\nSincerely, your boss.")
8511 (organization "Important Work, Inc"))
8513 (signature-file "~/.mail-signature"))))
8521 If you are writing a message (mail or news) and suddenly remember that
8522 you have a steak in the oven (or some pesto in the food processor, you
8523 craaazy vegetarians), you'll probably wish there was a method to save
8524 the message you are writing so that you can continue editing it some
8525 other day, and send it when you feel its finished.
8527 Well, don't worry about it. Whenever you start composing a message of
8528 some sort using the Gnus mail and post commands, the buffer you get will
8529 automatically associate to an article in a special @dfn{draft} group.
8530 If you save the buffer the normal way (@kbd{C-x C-s}, for instance), the
8531 article will be saved there. (Auto-save files also go to the draft
8535 @vindex nndraft-directory
8536 The draft group is a special group (which is implemented as an
8537 @code{nndraft} group, if you absolutely have to know) called
8538 @samp{nndraft:drafts}. The variable @code{nndraft-directory} says where
8539 @code{nndraft} is to store its files. What makes this group special is
8540 that you can't tick any articles in it or mark any articles as
8541 read---all articles in the group are permanently unread.
8543 If the group doesn't exist, it will be created and you'll be subscribed
8544 to it. The only way to make it disappear from the Group buffer is to
8547 @c @findex gnus-dissociate-buffer-from-draft
8548 @c @kindex C-c M-d (Mail)
8549 @c @kindex C-c M-d (Post)
8550 @c @findex gnus-associate-buffer-with-draft
8551 @c @kindex C-c C-d (Mail)
8552 @c @kindex C-c C-d (Post)
8553 @c If you're writing some super-secret message that you later want to
8554 @c encode with PGP before sending, you may wish to turn the auto-saving
8555 @c (and association with the draft group) off. You never know who might be
8556 @c interested in reading all your extremely valuable and terribly horrible
8557 @c and interesting secrets. The @kbd{C-c M-d}
8558 @c (@code{gnus-dissociate-buffer-from-draft}) command does that for you.
8559 @c If you change your mind and want to turn the auto-saving back on again,
8560 @c @kbd{C-c C-d} (@code{gnus-associate-buffer-with-draft} does that.
8562 @c @vindex gnus-use-draft
8563 @c To leave association with the draft group off by default, set
8564 @c @code{gnus-use-draft} to @code{nil}. It is @code{t} by default.
8566 @findex gnus-draft-edit-message
8568 When you want to continue editing the article, you simply enter the
8569 draft group and push @kbd{D e} (@code{gnus-draft-edit-message}) to do
8570 that. You will be placed in a buffer where you left off.
8572 Rejected articles will also be put in this draft group (@pxref{Rejected
8575 @findex gnus-draft-send-all-messages
8576 @findex gnus-draft-send-message
8577 If you have lots of rejected messages you want to post (or mail) without
8578 doing further editing, you can use the @kbd{D s} command
8579 (@code{gnus-draft-send-message}). This command understands the
8580 process/prefix convention (@pxref{Process/Prefix}). The @kbd{D S}
8581 command (@code{gnus-draft-send-all-messages}) will ship off all messages
8584 If you have some messages that you wish not to send, you can use the
8585 @kbd{D t} (@code{gnus-draft-toggle-sending}) command to mark the message
8586 as unsendable. This is a toggling command.
8589 @node Rejected Articles
8590 @section Rejected Articles
8591 @cindex rejected articles
8593 Sometimes a news server will reject an article. Perhaps the server
8594 doesn't like your face. Perhaps it just feels miserable. Perhaps
8595 @emph{there be demons}. Perhaps you have included too much cited text.
8596 Perhaps the disk is full. Perhaps the server is down.
8598 These situations are, of course, totally beyond the control of Gnus.
8599 (Gnus, of course, loves the way you look, always feels great, has angels
8600 fluttering around inside of it, doesn't care about how much cited text
8601 you include, never runs full and never goes down.) So Gnus saves these
8602 articles until some later time when the server feels better.
8604 The rejected articles will automatically be put in a special draft group
8605 (@pxref{Drafts}). When the server comes back up again, you'd then
8606 typically enter that group and send all the articles off.
8609 @node Select Methods
8610 @chapter Select Methods
8611 @cindex foreign groups
8612 @cindex select methods
8614 A @dfn{foreign group} is a group not read by the usual (or
8615 default) means. It could be, for instance, a group from a different
8616 @sc{nntp} server, it could be a virtual group, or it could be your own
8617 personal mail group.
8619 A foreign group (or any group, really) is specified by a @dfn{name} and
8620 a @dfn{select method}. To take the latter first, a select method is a
8621 list where the first element says what backend to use (e.g. @code{nntp},
8622 @code{nnspool}, @code{nnml}) and the second element is the @dfn{server
8623 name}. There may be additional elements in the select method, where the
8624 value may have special meaning for the backend in question.
8626 One could say that a select method defines a @dfn{virtual server}---so
8627 we do just that (@pxref{The Server Buffer}).
8629 The @dfn{name} of the group is the name the backend will recognize the
8632 For instance, the group @samp{soc.motss} on the @sc{nntp} server
8633 @samp{some.where.edu} will have the name @samp{soc.motss} and select
8634 method @code{(nntp "some.where.edu")}. Gnus will call this group
8635 @samp{nntp+some.where.edu:soc.motss}, even though the @code{nntp}
8636 backend just knows this group as @samp{soc.motss}.
8638 The different methods all have their peculiarities, of course.
8641 * The Server Buffer:: Making and editing virtual servers.
8642 * Getting News:: Reading USENET news with Gnus.
8643 * Getting Mail:: Reading your personal mail with Gnus.
8644 * Other Sources:: Reading directories, files, SOUP packets.
8645 * Combined Groups:: Combining groups into one group.
8646 * Gnus Unplugged:: Reading news and mail offline.
8650 @node The Server Buffer
8651 @section The Server Buffer
8653 Traditionally, a @dfn{server} is a machine or a piece of software that
8654 one connects to, and then requests information from. Gnus does not
8655 connect directly to any real servers, but does all transactions through
8656 one backend or other. But that's just putting one layer more between
8657 the actual media and Gnus, so we might just as well say that each
8658 backend represents a virtual server.
8660 For instance, the @code{nntp} backend may be used to connect to several
8661 different actual @sc{nntp} servers, or, perhaps, to many different ports
8662 on the same actual @sc{nntp} server. You tell Gnus which backend to
8663 use, and what parameters to set by specifying a @dfn{select method}.
8665 These select method specifications can sometimes become quite
8666 complicated---say, for instance, that you want to read from the
8667 @sc{nntp} server @samp{news.funet.fi} on port number 13, which
8668 hangs if queried for @sc{nov} headers and has a buggy select. Ahem.
8669 Anyways, if you had to specify that for each group that used this
8670 server, that would be too much work, so Gnus offers a way of naming
8671 select methods, which is what you do in the server buffer.
8673 To enter the server buffer, use the @kbd{^}
8674 (@code{gnus-group-enter-server-mode}) command in the group buffer.
8677 * Server Buffer Format:: You can customize the look of this buffer.
8678 * Server Commands:: Commands to manipulate servers.
8679 * Example Methods:: Examples server specifications.
8680 * Creating a Virtual Server:: An example session.
8681 * Server Variables:: Which variables to set.
8682 * Servers and Methods:: You can use server names as select methods.
8683 * Unavailable Servers:: Some servers you try to contact may be down.
8686 @vindex gnus-server-mode-hook
8687 @code{gnus-server-mode-hook} is run when creating the server buffer.
8690 @node Server Buffer Format
8691 @subsection Server Buffer Format
8692 @cindex server buffer format
8694 @vindex gnus-server-line-format
8695 You can change the look of the server buffer lines by changing the
8696 @code{gnus-server-line-format} variable. This is a @code{format}-like
8697 variable, with some simple extensions:
8702 How the news is fetched---the backend name.
8705 The name of this server.
8708 Where the news is to be fetched from---the address.
8711 The opened/closed/denied status of the server.
8714 @vindex gnus-server-mode-line-format
8715 The mode line can also be customized by using the
8716 @code{gnus-server-mode-line-format} variable (@pxref{Mode Line
8717 Formatting}). The following specs are understood:
8727 Also @pxref{Formatting Variables}.
8730 @node Server Commands
8731 @subsection Server Commands
8732 @cindex server commands
8738 @findex gnus-server-add-server
8739 Add a new server (@code{gnus-server-add-server}).
8743 @findex gnus-server-edit-server
8744 Edit a server (@code{gnus-server-edit-server}).
8747 @kindex SPACE (Server)
8748 @findex gnus-server-read-server
8749 Browse the current server (@code{gnus-server-read-server}).
8753 @findex gnus-server-exit
8754 Return to the group buffer (@code{gnus-server-exit}).
8758 @findex gnus-server-kill-server
8759 Kill the current server (@code{gnus-server-kill-server}).
8763 @findex gnus-server-yank-server
8764 Yank the previously killed server (@code{gnus-server-yank-server}).
8768 @findex gnus-server-copy-server
8769 Copy the current server (@code{gnus-server-copy-server}).
8773 @findex gnus-server-list-servers
8774 List all servers (@code{gnus-server-list-servers}).
8778 @findex gnus-server-scan-server
8779 Request that the server scan its sources for new articles
8780 (@code{gnus-server-scan-server}). This is mainly sensible with mail
8785 @findex gnus-server-regenerate-server
8786 Request that the server regenerate all its data structures
8787 (@code{gnus-server-regenerate-server}). This can be useful if you have
8788 a mail backend that has gotten out of synch.
8793 @node Example Methods
8794 @subsection Example Methods
8796 Most select methods are pretty simple and self-explanatory:
8799 (nntp "news.funet.fi")
8802 Reading directly from the spool is even simpler:
8808 As you can see, the first element in a select method is the name of the
8809 backend, and the second is the @dfn{address}, or @dfn{name}, if you
8812 After these two elements, there may be an arbitrary number of
8813 @var{(variable form)} pairs.
8815 To go back to the first example---imagine that you want to read from
8816 port 15 on that machine. This is what the select method should
8820 (nntp "news.funet.fi" (nntp-port-number 15))
8823 You should read the documentation to each backend to find out what
8824 variables are relevant, but here's an @code{nnmh} example:
8826 @code{nnmh} is a mail backend that reads a spool-like structure. Say
8827 you have two structures that you wish to access: One is your private
8828 mail spool, and the other is a public one. Here's the possible spec for
8832 (nnmh "private" (nnmh-directory "~/private/mail/"))
8835 (This server is then called @samp{private}, but you may have guessed
8838 Here's the method for a public spool:
8842 (nnmh-directory "/usr/information/spool/")
8843 (nnmh-get-new-mail nil))
8846 If you are behind a firewall and only have access to the @sc{nntp}
8847 server from the firewall machine, you can instruct Gnus to @code{rlogin}
8848 on the firewall machine and telnet from there to the @sc{nntp} server.
8849 Doing this can be rather fiddly, but your virtual server definition
8850 should probably look something like this:
8854 (nntp-address "the.firewall.machine")
8855 (nntp-open-connection-function nntp-open-rlogin)
8856 (nntp-end-of-line "\n")
8857 (nntp-rlogin-parameters
8858 ("telnet" "the.real.nntp.host" "nntp")))
8861 If you want to use the wonderful @code{ssh} program to provide a
8862 compressed connection over the modem line, you could create a virtual
8863 server that would look something like this:
8867 (nntp-address "copper.uio.no")
8868 (nntp-rlogin-program "ssh")
8869 (nntp-open-connection-function nntp-open-rlogin)
8870 (nntp-end-of-line "\n")
8871 (nntp-rlogin-parameters
8872 ("telnet" "news.uio.no" "nntp")))
8875 This means that you have to have set up @code{ssh-agent} correctly to
8876 provide automatic authorization, of course. And to get a compressed
8877 connection, you have to have the @samp{Compression} option in the
8878 @code{ssh} @file{config} file.
8881 @node Creating a Virtual Server
8882 @subsection Creating a Virtual Server
8884 If you're saving lots of articles in the cache by using persistent
8885 articles, you may want to create a virtual server to read the cache.
8887 First you need to add a new server. The @kbd{a} command does that. It
8888 would probably be best to use @code{nnspool} to read the cache. You
8889 could also use @code{nnml} or @code{nnmh}, though.
8891 Type @kbd{a nnspool RET cache RET}.
8893 You should now have a brand new @code{nnspool} virtual server called
8894 @samp{cache}. You now need to edit it to have the right definitions.
8895 Type @kbd{e} to edit the server. You'll be entered into a buffer that
8896 will contain the following:
8906 (nnspool-spool-directory "~/News/cache/")
8907 (nnspool-nov-directory "~/News/cache/")
8908 (nnspool-active-file "~/News/cache/active"))
8911 Type @kbd{C-c C-c} to return to the server buffer. If you now press
8912 @kbd{RET} over this virtual server, you should be entered into a browse
8913 buffer, and you should be able to enter any of the groups displayed.
8916 @node Server Variables
8917 @subsection Server Variables
8919 One sticky point when defining variables (both on backends and in Emacs
8920 in general) is that some variables are typically initialized from other
8921 variables when the definition of the variables is being loaded. If you
8922 change the "base" variable after the variables have been loaded, you
8923 won't change the "derived" variables.
8925 This typically affects directory and file variables. For instance,
8926 @code{nnml-directory} is @file{~/Mail/} by default, and all @code{nnml}
8927 directory variables are initialized from that variable, so
8928 @code{nnml-active-file} will be @file{~/Mail/active}. If you define a
8929 new virtual @code{nnml} server, it will @emph{not} suffice to set just
8930 @code{nnml-directory}---you have to explicitly set all the file
8931 variables to be what you want them to be. For a complete list of
8932 variables for each backend, see each backend's section later in this
8933 manual, but here's an example @code{nnml} definition:
8937 (nnml-directory "~/my-mail/")
8938 (nnml-active-file "~/my-mail/active")
8939 (nnml-newsgroups-file "~/my-mail/newsgroups"))
8943 @node Servers and Methods
8944 @subsection Servers and Methods
8946 Wherever you would normally use a select method
8947 (e.g. @code{gnus-secondary-select-method}, in the group select method,
8948 when browsing a foreign server) you can use a virtual server name
8949 instead. This could potentially save lots of typing. And it's nice all
8953 @node Unavailable Servers
8954 @subsection Unavailable Servers
8956 If a server seems to be unreachable, Gnus will mark that server as
8957 @code{denied}. That means that any subsequent attempt to make contact
8958 with that server will just be ignored. ``It can't be opened,'' Gnus
8959 will tell you, without making the least effort to see whether that is
8960 actually the case or not.
8962 That might seem quite naughty, but it does make sense most of the time.
8963 Let's say you have 10 groups subscribed to on server
8964 @samp{nephelococcygia.com}. This server is located somewhere quite far
8965 away from you and the machine is quite slow, so it takes 1 minute just
8966 to find out that it refuses connection to you today. If Gnus were to
8967 attempt to do that 10 times, you'd be quite annoyed, so Gnus won't
8968 attempt to do that. Once it has gotten a single ``connection refused'',
8969 it will regard that server as ``down''.
8971 So, what happens if the machine was only feeling unwell temporarily?
8972 How do you test to see whether the machine has come up again?
8974 You jump to the server buffer (@pxref{The Server Buffer}) and poke it
8975 with the following commands:
8981 @findex gnus-server-open-server
8982 Try to establish connection to the server on the current line
8983 (@code{gnus-server-open-server}).
8987 @findex gnus-server-close-server
8988 Close the connection (if any) to the server
8989 (@code{gnus-server-close-server}).
8993 @findex gnus-server-deny-server
8994 Mark the current server as unreachable
8995 (@code{gnus-server-deny-server}).
8998 @kindex M-o (Server)
8999 @findex gnus-server-open-all-servers
9000 Open the connections to all servers in the buffer
9001 (@code{gnus-server-open-all-servers}).
9004 @kindex M-c (Server)
9005 @findex gnus-server-close-all-servers
9006 Close the connections to all servers in the buffer
9007 (@code{gnus-server-close-all-servers}).
9011 @findex gnus-server-remove-denials
9012 Remove all marks to whether Gnus was denied connection from any servers
9013 (@code{gnus-server-remove-denials}).
9019 @section Getting News
9020 @cindex reading news
9021 @cindex news backends
9023 A newsreader is normally used for reading news. Gnus currently provides
9024 only two methods of getting news---it can read from an @sc{nntp} server,
9025 or it can read from a local spool.
9028 * NNTP:: Reading news from an @sc{nntp} server.
9029 * News Spool:: Reading news from the local spool.
9034 @subsection @sc{nntp}
9037 Subscribing to a foreign group from an @sc{nntp} server is rather easy.
9038 You just specify @code{nntp} as method and the address of the @sc{nntp}
9039 server as the, uhm, address.
9041 If the @sc{nntp} server is located at a non-standard port, setting the
9042 third element of the select method to this port number should allow you
9043 to connect to the right port. You'll have to edit the group info for
9044 that (@pxref{Foreign Groups}).
9046 The name of the foreign group can be the same as a native group. In
9047 fact, you can subscribe to the same group from as many different servers
9048 you feel like. There will be no name collisions.
9050 The following variables can be used to create a virtual @code{nntp}
9055 @item nntp-server-opened-hook
9056 @vindex nntp-server-opened-hook
9057 @cindex @sc{mode reader}
9059 @cindex authentification
9060 @cindex nntp authentification
9061 @findex nntp-send-authinfo
9062 @findex nntp-send-mode-reader
9063 is run after a connection has been made. It can be used to send
9064 commands to the @sc{nntp} server after it has been contacted. By
9065 default it sends the command @code{MODE READER} to the server with the
9066 @code{nntp-send-mode-reader} function. This function should always be
9067 present in this hook.
9069 @item nntp-authinfo-function
9070 @vindex nntp-authinfo-function
9071 @findex nntp-send-authinfo
9072 @vindex nntp-authinfo-file
9073 This function will be used to send @samp{AUTHINFO} to the @sc{nntp}
9074 server. The default function is @code{nntp-send-authinfo}, which looks
9075 through your @file{~/.authinfo} (or whatever you've set the
9076 @code{nntp-authinfo-file} variable to) for applicable entries. If none
9077 are found, it will prompt you for a login name and a password. The
9078 format of the @file{~/.authinfo} file is (almost) the same as the
9079 @code{ftp} @file{~/.netrc} file, which is defined in the @code{ftp}
9080 manual page, but here are the salient facts:
9084 The file contains one or more line, each of which define one server.
9087 Each line may contain an arbitrary number of token/value pairs. The
9088 valid tokens include @samp{machine}, @samp{login}, @samp{password},
9089 @samp{default} and @samp{force}. (The latter is not a valid
9090 @file{.netrc}/@code{ftp} token, which is the only way the
9091 @file{.authinfo} file format deviates from the @file{.netrc} file
9096 Here's an example file:
9099 machine news.uio.no login larsi password geheimnis
9100 machine nntp.ifi.uio.no login larsi force yes
9103 The token/value pairs may appear in any order; @samp{machine} doesn't
9104 have to be first, for instance.
9106 In this example, both login name and password have been supplied for the
9107 former server, while the latter has only the login name listed, and the
9108 user will be prompted for the password. The latter also has the
9109 @samp{force} tag, which means that the authinfo will be sent to the
9110 @var{nntp} server upon connection; the default (i.e., when there is not
9111 @samp{force} tag) is to not send authinfo to the @var{nntp} server
9112 until the @var{nntp} server asks for it.
9114 You can also add @samp{default} lines that will apply to all servers
9115 that don't have matching @samp{machine} lines.
9121 This will force sending @samp{AUTHINFO} commands to all servers not
9122 previously mentioned.
9124 Remember to not leave the @file{~/.authinfo} file world-readable.
9126 @item nntp-server-action-alist
9127 @vindex nntp-server-action-alist
9128 This is a list of regexps to match on server types and actions to be
9129 taken when matches are made. For instance, if you want Gnus to beep
9130 every time you connect to innd, you could say something like:
9133 (setq nntp-server-action-alist
9137 You probably don't want to do that, though.
9139 The default value is
9142 '(("nntpd 1\\.5\\.11t"
9143 (remove-hook 'nntp-server-opened-hook 'nntp-send-mode-reader)))
9146 This ensures that Gnus doesn't send the @code{MODE READER} command to
9147 nntpd 1.5.11t, since that command chokes that server, I've been told.
9149 @item nntp-maximum-request
9150 @vindex nntp-maximum-request
9151 If the @sc{nntp} server doesn't support @sc{nov} headers, this backend
9152 will collect headers by sending a series of @code{head} commands. To
9153 speed things up, the backend sends lots of these commands without
9154 waiting for reply, and then reads all the replies. This is controlled
9155 by the @code{nntp-maximum-request} variable, and is 400 by default. If
9156 your network is buggy, you should set this to 1.
9158 @item nntp-connection-timeout
9159 @vindex nntp-connection-timeout
9160 If you have lots of foreign @code{nntp} groups that you connect to
9161 regularly, you're sure to have problems with @sc{nntp} servers not
9162 responding properly, or being too loaded to reply within reasonable
9163 time. This is can lead to awkward problems, which can be helped
9164 somewhat by setting @code{nntp-connection-timeout}. This is an integer
9165 that says how many seconds the @code{nntp} backend should wait for a
9166 connection before giving up. If it is @code{nil}, which is the default,
9167 no timeouts are done.
9169 @c @item nntp-command-timeout
9170 @c @vindex nntp-command-timeout
9171 @c @cindex PPP connections
9172 @c @cindex dynamic IP addresses
9173 @c If you're running Gnus on a machine that has a dynamically assigned
9174 @c address, Gnus may become confused. If the address of your machine
9175 @c changes after connecting to the @sc{nntp} server, Gnus will simply sit
9176 @c waiting forever for replies from the server. To help with this
9177 @c unfortunate problem, you can set this command to a number. Gnus will
9178 @c then, if it sits waiting for a reply from the server longer than that
9179 @c number of seconds, shut down the connection, start a new one, and resend
9180 @c the command. This should hopefully be transparent to the user. A
9181 @c likely number is 30 seconds.
9183 @c @item nntp-retry-on-break
9184 @c @vindex nntp-retry-on-break
9185 @c If this variable is non-@code{nil}, you can also @kbd{C-g} if Gnus
9186 @c hangs. This will have much the same effect as the command timeout
9189 @item nntp-server-hook
9190 @vindex nntp-server-hook
9191 This hook is run as the last step when connecting to an @sc{nntp}
9194 @findex nntp-open-rlogin
9195 @findex nntp-open-telnet
9196 @findex nntp-open-network-stream
9197 @item nntp-open-connection-function
9198 @vindex nntp-open-connection-function
9199 This function is used to connect to the remote system. Four pre-made
9200 functions are supplied:
9203 @item nntp-open-network-stream
9204 This is the default, and simply connects to some port or other on the
9207 @item nntp-open-rlogin
9208 Does an @samp{rlogin} on the
9209 remote system, and then does a @samp{telnet} to the @sc{nntp} server
9212 @code{nntp-open-rlogin}-related variables:
9216 @item nntp-rlogin-program
9217 @vindex nntp-rlogin-program
9218 Program used to log in on remote machines. The default is @samp{rsh},
9219 but @samp{ssh} is a popular alternative.
9221 @item nntp-rlogin-parameters
9222 @vindex nntp-rlogin-parameters
9223 This list will be used as the parameter list given to @code{rsh}.
9225 @item nntp-rlogin-user-name
9226 @vindex nntp-rlogin-user-name
9227 User name on the remote system.
9231 @item nntp-open-telnet
9232 Does a @samp{telnet} to the remote system and then another @samp{telnet}
9233 to get to the @sc{nntp} server.
9235 @code{nntp-open-telnet}-related variables:
9238 @item nntp-telnet-command
9239 @vindex nntp-telnet-command
9240 Command used to start @code{telnet}.
9242 @item nntp-telnet-switches
9243 @vindex nntp-telnet-switches
9244 List of strings to be used as the switches to the @code{telnet} command.
9246 @item nntp-telnet-user-name
9247 @vindex nntp-telnet-user-name
9248 User name for log in on the remote system.
9250 @item nntp-telnet-passwd
9251 @vindex nntp-telnet-passwd
9252 Password to use when logging in.
9254 @item nntp-telnet-parameters
9255 @vindex nntp-telnet-parameters
9256 A list of strings executed as a command after logging in
9259 @item nntp-telnet-shell-prompt
9260 @vindex nntp-telnet-shell-prompt
9261 Regexp matching the shell prompt on the remote machine. The default is
9262 @samp{bash\\|\$ *\r?$\\|> *\r?}.
9264 @item nntp-open-telnet-envuser
9265 @vindex nntp-open-telnet-envuser
9266 If non-@code{nil}, the @code{telnet} session (client and server both)
9267 will support the @code{ENVIRON} option and not prompt for login name.
9268 This works for Solaris @code{telnet}, for instance.
9272 @findex nntp-open-ssl-stream
9273 @item nntp-open-ssl-stream
9274 Opens a connection to a server over a @dfn{secure} channel. To use this
9275 you must have SSLay installed
9276 (@file{ftp://ftp.psy.uq.oz.au/pub/Crypto/SSL}, and you also need
9277 @file{ssl.el} (from the W3 distributeion, for instance). You then
9278 define a server as follows:
9281 ;; Type `C-c C-c' after you've finished editing.
9283 ;; "snews" is port 563 and is predefined in our /etc/services
9285 (nntp "snews.bar.com"
9286 (nntp-open-connection-function nntp-open-ssl-stream)
9287 (nntp-port-number "snews")
9288 (nntp-address "snews.bar.com"))
9293 @item nntp-end-of-line
9294 @vindex nntp-end-of-line
9295 String to use as end-of-line marker when talking to the @sc{nntp}
9296 server. This is @samp{\r\n} by default, but should be @samp{\n} when
9297 using @code{rlogin} to talk to the server.
9299 @item nntp-rlogin-user-name
9300 @vindex nntp-rlogin-user-name
9301 User name on the remote system when using the @code{rlogin} connect
9305 @vindex nntp-address
9306 The address of the remote system running the @sc{nntp} server.
9308 @item nntp-port-number
9309 @vindex nntp-port-number
9310 Port number to connect to when using the @code{nntp-open-network-stream}
9313 @item nntp-buggy-select
9314 @vindex nntp-buggy-select
9315 Set this to non-@code{nil} if your select routine is buggy.
9317 @item nntp-nov-is-evil
9318 @vindex nntp-nov-is-evil
9319 If the @sc{nntp} server does not support @sc{nov}, you could set this
9320 variable to @code{t}, but @code{nntp} usually checks automatically whether @sc{nov}
9323 @item nntp-xover-commands
9324 @vindex nntp-xover-commands
9327 List of strings used as commands to fetch @sc{nov} lines from a
9328 server. The default value of this variable is @code{("XOVER"
9332 @vindex nntp-nov-gap
9333 @code{nntp} normally sends just one big request for @sc{nov} lines to
9334 the server. The server responds with one huge list of lines. However,
9335 if you have read articles 2-5000 in the group, and only want to read
9336 article 1 and 5001, that means that @code{nntp} will fetch 4999 @sc{nov}
9337 lines that you will not need. This variable says how
9338 big a gap between two consecutive articles is allowed to be before the
9339 @code{XOVER} request is split into several request. Note that if your
9340 network is fast, setting this variable to a really small number means
9341 that fetching will probably be slower. If this variable is @code{nil},
9342 @code{nntp} will never split requests. The default is 5.
9344 @item nntp-prepare-server-hook
9345 @vindex nntp-prepare-server-hook
9346 A hook run before attempting to connect to an @sc{nntp} server.
9348 @item nntp-warn-about-losing-connection
9349 @vindex nntp-warn-about-losing-connection
9350 If this variable is non-@code{nil}, some noise will be made when a
9351 server closes connection.
9353 @item nntp-record-commands
9354 @vindex nntp-record-commands
9355 If non-@code{nil}, @code{nntp} will log all commands it sends to the
9356 @sc{nntp} server (along with a timestep) in the @samp{*nntp-log*}
9357 buffer. This is useful if you are debugging a Gnus/@sc{nntp} connection
9358 that doesn't seem to work.
9364 @subsection News Spool
9368 Subscribing to a foreign group from the local spool is extremely easy,
9369 and might be useful, for instance, to speed up reading groups that
9370 contain very big articles---@samp{alt.binaries.pictures.furniture}, for
9373 Anyways, you just specify @code{nnspool} as the method and @code{""} (or
9374 anything else) as the address.
9376 If you have access to a local spool, you should probably use that as the
9377 native select method (@pxref{Finding the News}). It is normally faster
9378 than using an @code{nntp} select method, but might not be. It depends.
9379 You just have to try to find out what's best at your site.
9383 @item nnspool-inews-program
9384 @vindex nnspool-inews-program
9385 Program used to post an article.
9387 @item nnspool-inews-switches
9388 @vindex nnspool-inews-switches
9389 Parameters given to the inews program when posting an article.
9391 @item nnspool-spool-directory
9392 @vindex nnspool-spool-directory
9393 Where @code{nnspool} looks for the articles. This is normally
9394 @file{/usr/spool/news/}.
9396 @item nnspool-nov-directory
9397 @vindex nnspool-nov-directory
9398 Where @code{nnspool} will look for @sc{nov} files. This is normally
9399 @file{/usr/spool/news/over.view/}.
9401 @item nnspool-lib-dir
9402 @vindex nnspool-lib-dir
9403 Where the news lib dir is (@file{/usr/lib/news/} by default).
9405 @item nnspool-active-file
9406 @vindex nnspool-active-file
9407 The path to the active file.
9409 @item nnspool-newsgroups-file
9410 @vindex nnspool-newsgroups-file
9411 The path to the group descriptions file.
9413 @item nnspool-history-file
9414 @vindex nnspool-history-file
9415 The path to the news history file.
9417 @item nnspool-active-times-file
9418 @vindex nnspool-active-times-file
9419 The path to the active date file.
9421 @item nnspool-nov-is-evil
9422 @vindex nnspool-nov-is-evil
9423 If non-@code{nil}, @code{nnspool} won't try to use any @sc{nov} files
9426 @item nnspool-sift-nov-with-sed
9427 @vindex nnspool-sift-nov-with-sed
9429 If non-@code{nil}, which is the default, use @code{sed} to get the
9430 relevant portion from the overview file. If nil, @code{nnspool} will
9431 load the entire file into a buffer and process it there.
9437 @section Getting Mail
9438 @cindex reading mail
9441 Reading mail with a newsreader---isn't that just plain WeIrD? But of
9445 * Getting Started Reading Mail:: A simple cookbook example.
9446 * Splitting Mail:: How to create mail groups.
9447 * Mail Backend Variables:: Variables for customizing mail handling.
9448 * Fancy Mail Splitting:: Gnus can do hairy splitting of incoming mail.
9449 * Mail and Procmail:: Reading mail groups that procmail create.
9450 * Incorporating Old Mail:: What about the old mail you have?
9451 * Expiring Mail:: Getting rid of unwanted mail.
9452 * Washing Mail:: Removing gruft from the mail you get.
9453 * Duplicates:: Dealing with duplicated mail.
9454 * Not Reading Mail:: Using mail backends for reading other files.
9455 * Choosing a Mail Backend:: Gnus can read a variety of mail formats.
9459 @node Getting Started Reading Mail
9460 @subsection Getting Started Reading Mail
9462 It's quite easy to use Gnus to read your new mail. You just plonk the
9463 mail backend of your choice into @code{gnus-secondary-select-methods},
9464 and things will happen automatically.
9466 For instance, if you want to use @code{nnml} (which is a "one file per
9467 mail" backend), you could put the following in your @file{.gnus} file:
9470 (setq gnus-secondary-select-methods
9471 '((nnml "private")))
9474 Now, the next time you start Gnus, this backend will be queried for new
9475 articles, and it will move all the messages in your spool file to its
9476 directory, which is @code{~/Mail/} by default. The new group that will
9477 be created (@samp{mail.misc}) will be subscribed, and you can read it
9478 like any other group.
9480 You will probably want to split the mail into several groups, though:
9483 (setq nnmail-split-methods
9484 '(("junk" "^From:.*Lars Ingebrigtsen")
9485 ("crazy" "^Subject:.*die\\|^Organization:.*flabby")
9489 This will result in three new @code{nnml} mail groups being created:
9490 @samp{nnml:junk}, @samp{nnml:crazy}, and @samp{nnml:other}. All the
9491 mail that doesn't fit into the first two groups will be placed in the
9494 This should be sufficient for reading mail with Gnus. You might want to
9495 give the other sections in this part of the manual a perusal, though.
9496 Especially @pxref{Choosing a Mail Backend} and @pxref{Expiring Mail}.
9499 @node Splitting Mail
9500 @subsection Splitting Mail
9501 @cindex splitting mail
9502 @cindex mail splitting
9504 @vindex nnmail-split-methods
9505 The @code{nnmail-split-methods} variable says how the incoming mail is
9506 to be split into groups.
9509 (setq nnmail-split-methods
9510 '(("mail.junk" "^From:.*Lars Ingebrigtsen")
9511 ("mail.crazy" "^Subject:.*die\\|^Organization:.*flabby")
9515 This variable is a list of lists, where the first element of each of
9516 these lists is the name of the mail group (they do not have to be called
9517 something beginning with @samp{mail}, by the way), and the second
9518 element is a regular expression used on the header of each mail to
9519 determine if it belongs in this mail group. The first string may
9520 contain @samp{\\1} forms, like the ones used by @code{replace-match} to
9521 insert sub-expressions from the matched text. For instance:
9524 ("list.\\1" "From:.*\\(.*\\)-list@@majordomo.com")
9527 The second element can also be a function. In that case, it will be
9528 called narrowed to the headers with the first element of the rule as the
9529 argument. It should return a non-@code{nil} value if it thinks that the
9530 mail belongs in that group.
9532 The last of these groups should always be a general one, and the regular
9533 expression should @emph{always} be @samp{} so that it matches any mails
9534 that haven't been matched by any of the other regexps. (These rules are
9535 processed from the beginning of the alist toward the end. The first
9536 rule to make a match will "win", unless you have crossposting enabled.
9537 In that case, all matching rules will "win".)
9539 If you like to tinker with this yourself, you can set this variable to a
9540 function of your choice. This function will be called without any
9541 arguments in a buffer narrowed to the headers of an incoming mail
9542 message. The function should return a list of group names that it
9543 thinks should carry this mail message.
9545 Note that the mail backends are free to maul the poor, innocent,
9546 incoming headers all they want to. They all add @code{Lines} headers;
9547 some add @code{X-Gnus-Group} headers; most rename the Unix mbox
9548 @code{From<SPACE>} line to something else.
9550 @vindex nnmail-crosspost
9551 The mail backends all support cross-posting. If several regexps match,
9552 the mail will be ``cross-posted'' to all those groups.
9553 @code{nnmail-crosspost} says whether to use this mechanism or not. Note
9554 that no articles are crossposted to the general (@samp{}) group.
9556 @vindex nnmail-crosspost-link-function
9559 @code{nnmh} and @code{nnml} makes crossposts by creating hard links to
9560 the crossposted articles. However, not all file systems support hard
9561 links. If that's the case for you, set
9562 @code{nnmail-crosspost-link-function} to @code{copy-file}. (This
9563 variable is @code{add-name-to-file} by default.)
9565 @kindex M-x nnmail-split-history
9566 @kindex nnmail-split-history
9567 If you wish to see where the previous mail split put the messages, you
9568 can use the @kbd{M-x nnmail-split-history} command.
9570 Gnus gives you all the opportunity you could possibly want for shooting
9571 yourself in the foot. Let's say you create a group that will contain
9572 all the mail you get from your boss. And then you accidentally
9573 unsubscribe from the group. Gnus will still put all the mail from your
9574 boss in the unsubscribed group, and so, when your boss mails you ``Have
9575 that report ready by Monday or you're fired!'', you'll never see it and,
9576 come Tuesday, you'll still believe that you're gainfully employed while
9577 you really should be out collecting empty bottles to save up for next
9581 @node Mail Backend Variables
9582 @subsection Mail Backend Variables
9584 These variables are (for the most part) pertinent to all the various
9588 @vindex nnmail-read-incoming-hook
9589 @item nnmail-read-incoming-hook
9590 The mail backends all call this hook after reading new mail. You can
9591 use this hook to notify any mail watch programs, if you want to.
9593 @vindex nnmail-spool-file
9594 @item nnmail-spool-file
9598 @vindex nnmail-pop-password
9599 @vindex nnmail-pop-password-required
9600 The backends will look for new mail in this file. If this variable is
9601 @code{nil}, the mail backends will never attempt to fetch mail by
9602 themselves. If you are using a POP mail server and your name is
9603 @samp{larsi}, you should set this variable to @samp{po:larsi}. If
9604 your name is not @samp{larsi}, you should probably modify that
9605 slightly, but you may have guessed that already, you smart & handsome
9606 devil! You can also set this variable to @code{pop}, and Gnus will try
9607 to figure out the POP mail string by itself. In any case, Gnus will
9608 call @code{movemail} which will contact the POP server named in the
9609 @code{MAILHOST} environment variable. If the POP server needs a
9610 password, you can either set @code{nnmail-pop-password-required} to
9611 @code{t} and be prompted for the password, or set
9612 @code{nnmail-pop-password} to the password itself.
9614 @code{nnmail-spool-file} can also be a list of mailboxes.
9616 Your Emacs has to have been configured with @samp{--with-pop} before
9617 compilation. This is the default, but some installations have it
9620 When you use a mail backend, Gnus will slurp all your mail from your
9621 inbox and plonk it down in your home directory. Gnus doesn't move any
9622 mail if you're not using a mail backend---you have to do a lot of magic
9623 invocations first. At the time when you have finished drawing the
9624 pentagram, lightened the candles, and sacrificed the goat, you really
9625 shouldn't be too surprised when Gnus moves your mail.
9627 @vindex nnmail-use-procmail
9628 @vindex nnmail-procmail-suffix
9629 @item nnmail-use-procmail
9630 If non-@code{nil}, the mail backends will look in
9631 @code{nnmail-procmail-directory} for incoming mail. All the files in
9632 that directory that have names ending in @code{nnmail-procmail-suffix}
9633 will be considered incoming mailboxes, and will be searched for new
9636 @vindex nnmail-crash-box
9637 @item nnmail-crash-box
9638 When a mail backend reads a spool file, mail is first moved to this
9639 file, which is @file{~/.gnus-crash-box} by default. If this file
9640 already exists, it will always be read (and incorporated) before any
9643 @vindex nnmail-prepare-incoming-hook
9644 @item nnmail-prepare-incoming-hook
9645 This is run in a buffer that holds all the new incoming mail, and can be
9646 used for, well, anything, really.
9648 @vindex nnmail-split-hook
9649 @item nnmail-split-hook
9650 @findex article-decode-encoded-words
9651 @findex RFC1522 decoding
9652 @findex RFC2047 decoding
9653 Hook run in the buffer where the mail headers of each message is kept
9654 just before the splitting based on these headers is done. The hook is
9655 free to modify the buffer contents in any way it sees fit---the buffer
9656 is discarded after the splitting has been done, and no changes performed
9657 in the buffer will show up in any files.
9658 @code{gnus-article-decode-encoded-words} is one likely function to add
9661 @vindex nnmail-pre-get-new-mail-hook
9662 @vindex nnmail-post-get-new-mail-hook
9663 @item nnmail-pre-get-new-mail-hook
9664 @itemx nnmail-post-get-new-mail-hook
9665 These are two useful hooks executed when treating new incoming
9666 mail---@code{nnmail-pre-get-new-mail-hook} (is called just before
9667 starting to handle the new mail) and
9668 @code{nnmail-post-get-new-mail-hook} (is called when the mail handling
9669 is done). Here's and example of using these two hooks to change the
9670 default file modes the new mail files get:
9673 (add-hook 'gnus-pre-get-new-mail-hook
9674 (lambda () (set-default-file-modes 511)))
9676 (add-hook 'gnus-post-get-new-mail-hook
9677 (lambda () (set-default-file-modes 551)))
9680 @item nnmail-tmp-directory
9681 @vindex nnmail-tmp-directory
9682 This variable says where to move incoming mail to -- while processing
9683 it. This is usually done in the same directory that the mail backend
9684 inhabits (e.g., @file{~/Mail/}), but if this variable is non-@code{nil},
9685 it will be used instead.
9687 @item nnmail-movemail-program
9688 @vindex nnmail-movemail-program
9689 This program is executed to move mail from the user's inbox to her home
9690 directory. The default is @samp{movemail}.
9692 This can also be a function. In that case, the function will be called
9693 with two parameters -- the name of the inbox, and the file to be moved
9696 @item nnmail-delete-incoming
9697 @vindex nnmail-delete-incoming
9698 @cindex incoming mail files
9699 @cindex deleting incoming files
9700 If non-@code{nil}, the mail backends will delete the temporary incoming
9701 file after splitting mail into the proper groups. This is @code{t} by
9704 @c This is @code{nil} by
9705 @c default for reasons of security.
9707 @c Since Red Gnus is an alpha release, it is to be expected to lose mail.
9708 (No Gnus release since (ding) Gnus 0.10 (or something like that) have
9709 lost mail, I think, but that's not the point. (Except certain versions
9710 of Red Gnus.)) By not deleting the Incoming* files, one can be sure not
9711 to lose mail -- if Gnus totally whacks out, one can always recover what
9714 You may delete the @file{Incoming*} files at will.
9716 @item nnmail-use-long-file-names
9717 @vindex nnmail-use-long-file-names
9718 If non-@code{nil}, the mail backends will use long file and directory
9719 names. Groups like @samp{mail.misc} will end up in directories
9720 (assuming use of @code{nnml} backend) or files (assuming use of
9721 @code{nnfolder} backend) like @file{mail.misc}. If it is @code{nil},
9722 the same group will end up in @file{mail/misc}.
9724 @item nnmail-delete-file-function
9725 @vindex nnmail-delete-file-function
9727 Function called to delete files. It is @code{delete-file} by default.
9729 @item nnmail-cache-accepted-message-ids
9730 @vindex nnmail-cache-accepted-message-ids
9731 If non-@code{nil}, put the @code{Message-ID}s of articles imported into
9732 the backend (via @code{Gcc}, for instance) into the mail duplication
9733 discovery cache. The default is @code{nil}.
9738 @node Fancy Mail Splitting
9739 @subsection Fancy Mail Splitting
9740 @cindex mail splitting
9741 @cindex fancy mail splitting
9743 @vindex nnmail-split-fancy
9744 @findex nnmail-split-fancy
9745 If the rather simple, standard method for specifying how to split mail
9746 doesn't allow you to do what you want, you can set
9747 @code{nnmail-split-methods} to @code{nnmail-split-fancy}. Then you can
9748 play with the @code{nnmail-split-fancy} variable.
9750 Let's look at an example value of this variable first:
9753 ;; Messages from the mailer daemon are not crossposted to any of
9754 ;; the ordinary groups. Warnings are put in a separate group
9755 ;; from real errors.
9756 (| ("from" mail (| ("subject" "warn.*" "mail.warning")
9758 ;; Non-error messages are crossposted to all relevant
9759 ;; groups, but we don't crosspost between the group for the
9760 ;; (ding) list and the group for other (ding) related mail.
9761 (& (| (any "ding@@ifi\\.uio\\.no" "ding.list")
9762 ("subject" "ding" "ding.misc"))
9763 ;; Other mailing lists...
9764 (any "procmail@@informatik\\.rwth-aachen\\.de" "procmail.list")
9765 (any "SmartList@@informatik\\.rwth-aachen\\.de" "SmartList.list")
9767 (any "larsi@@ifi\\.uio\\.no" "people.Lars_Magne_Ingebrigtsen"))
9768 ;; Unmatched mail goes to the catch all group.
9772 This variable has the format of a @dfn{split}. A split is a (possibly)
9773 recursive structure where each split may contain other splits. Here are
9774 the five possible split syntaxes:
9779 @samp{group}: If the split is a string, that will be taken as a group
9780 name. Normal regexp match expansion will be done. See below for
9784 @var{(FIELD VALUE SPLIT)}: If the split is a list, the first element of
9785 which is a string, then store the message as specified by SPLIT, if
9786 header FIELD (a regexp) contains VALUE (also a regexp).
9789 @var{(| SPLIT...)}: If the split is a list, and the first element is
9790 @code{|} (vertical bar), then process each SPLIT until one of them
9791 matches. A SPLIT is said to match if it will cause the mail message to
9792 be stored in one or more groups.
9795 @var{(& SPLIT...)}: If the split is a list, and the first element is
9796 @code{&}, then process all SPLITs in the list.
9799 @code{junk}: If the split is the symbol @code{junk}, then don't save
9800 this message. Use with extreme caution.
9803 @var{(: function arg1 arg2 ...)}: If the split is a list, and the first
9804 element is @code{:}, then the second element will be called as a
9805 function with @var{args} given as arguments. The function should return
9809 @code{nil}: If the split is @code{nil}, it is ignored.
9813 In these splits, @var{FIELD} must match a complete field name.
9814 @var{VALUE} must match a complete word according to the fundamental mode
9815 syntax table. You can use @code{.*} in the regexps to match partial
9816 field names or words. In other words, all @var{VALUE}'s are wrapped in
9817 @samp{\<} and @samp{\>} pairs.
9819 @vindex nnmail-split-abbrev-alist
9820 @var{FIELD} and @var{VALUE} can also be lisp symbols, in that case they
9821 are expanded as specified by the variable
9822 @code{nnmail-split-abbrev-alist}. This is an alist of cons cells, where
9823 the @code{car} of a cell contains the key, and the @code{cdr} contains the associated
9826 @vindex nnmail-split-fancy-syntax-table
9827 @code{nnmail-split-fancy-syntax-table} is the syntax table in effect
9828 when all this splitting is performed.
9830 If you want to have Gnus create groups dynamically based on some
9831 information in the headers (i.e., do @code{replace-match}-like
9832 substitutions in the group names), you can say things like:
9835 (any "debian-\\b\\(\\w+\\)@@lists.debian.org" "mail.debian.\\1")
9838 If the string contains the element @samp{\&}, then the previously
9839 matched string will be substituted. Similarly, the elements @samp{\\1}
9840 up to @samp{\\9} will be substituted with the text matched by the
9841 groupings 1 through 9.
9844 @node Mail and Procmail
9845 @subsection Mail and Procmail
9850 Many people use @code{procmail} (or some other mail filter program or
9851 external delivery agent---@code{slocal}, @code{elm}, etc) to split
9852 incoming mail into groups. If you do that, you should set
9853 @code{nnmail-spool-file} to @code{procmail} to ensure that the mail
9854 backends never ever try to fetch mail by themselves.
9856 If you have a combined @code{procmail}/POP/mailbox setup, you can do
9857 something like the following:
9859 @vindex nnmail-use-procmail
9861 (setq nnmail-use-procmail t)
9862 (setq nnmail-spool-file
9863 '("/usr/spool/mail/my-name" "po:my-name"))
9866 This also means that you probably don't want to set
9867 @code{nnmail-split-methods} either, which has some, perhaps, unexpected
9870 When a mail backend is queried for what groups it carries, it replies
9871 with the contents of that variable, along with any groups it has figured
9872 out that it carries by other means. None of the backends, except
9873 @code{nnmh}, actually go out to the disk and check what groups actually
9874 exist. (It's not trivial to distinguish between what the user thinks is
9875 a basis for a newsgroup and what is just a plain old file or directory.)
9877 This means that you have to tell Gnus (and the backends) by hand what
9880 Let's take the @code{nnmh} backend as an example:
9882 The folders are located in @code{nnmh-directory}, say, @file{~/Mail/}.
9883 There are three folders, @file{foo}, @file{bar} and @file{mail.baz}.
9885 Go to the group buffer and type @kbd{G m}. When prompted, answer
9886 @samp{foo} for the name and @samp{nnmh} for the method. Repeat
9887 twice for the two other groups, @samp{bar} and @samp{mail.baz}. Be sure
9888 to include all your mail groups.
9890 That's it. You are now set to read your mail. An active file for this
9891 method will be created automatically.
9893 @vindex nnmail-procmail-suffix
9894 @vindex nnmail-procmail-directory
9895 If you use @code{nnfolder} or any other backend that store more than a
9896 single article in each file, you should never have procmail add mails to
9897 the file that Gnus sees. Instead, procmail should put all incoming mail
9898 in @code{nnmail-procmail-directory}. To arrive at the file name to put
9899 the incoming mail in, append @code{nnmail-procmail-suffix} to the group
9900 name. The mail backends will read the mail from these files.
9902 @vindex nnmail-resplit-incoming
9903 When Gnus reads a file called @file{mail.misc.spool}, this mail will be
9904 put in the @code{mail.misc}, as one would expect. However, if you want
9905 Gnus to split the mail the normal way, you could set
9906 @code{nnmail-resplit-incoming} to @code{t}.
9908 @vindex nnmail-keep-last-article
9909 If you use @code{procmail} to split things directly into an @code{nnmh}
9910 directory (which you shouldn't do), you should set
9911 @code{nnmail-keep-last-article} to non-@code{nil} to prevent Gnus from
9912 ever expiring the final article (i.e., the article with the highest
9913 article number) in a mail newsgroup. This is quite, quite important.
9915 Here's an example setup: The incoming spools are located in
9916 @file{~/incoming/} and have @samp{""} as suffixes (i.e., the incoming
9917 spool files have the same names as the equivalent groups). The
9918 @code{nnfolder} backend is to be used as the mail interface, and the
9919 @code{nnfolder} directory is @file{~/fMail/}.
9922 (setq nnfolder-directory "~/fMail/")
9923 (setq nnmail-spool-file 'procmail)
9924 (setq nnmail-procmail-directory "~/incoming/")
9925 (setq gnus-secondary-select-methods '((nnfolder "")))
9926 (setq nnmail-procmail-suffix "")
9930 @node Incorporating Old Mail
9931 @subsection Incorporating Old Mail
9933 Most people have lots of old mail stored in various file formats. If
9934 you have set up Gnus to read mail using one of the spiffy Gnus mail
9935 backends, you'll probably wish to have that old mail incorporated into
9938 Doing so can be quite easy.
9940 To take an example: You're reading mail using @code{nnml}
9941 (@pxref{Mail Spool}), and have set @code{nnmail-split-methods} to a
9942 satisfactory value (@pxref{Splitting Mail}). You have an old Unix mbox
9943 file filled with important, but old, mail. You want to move it into
9944 your @code{nnml} groups.
9950 Go to the group buffer.
9953 Type `G f' and give the path to the mbox file when prompted to create an
9954 @code{nndoc} group from the mbox file (@pxref{Foreign Groups}).
9957 Type `SPACE' to enter the newly created group.
9960 Type `M P b' to process-mark all articles in this group's buffer
9961 (@pxref{Setting Process Marks}).
9964 Type `B r' to respool all the process-marked articles, and answer
9965 @samp{nnml} when prompted (@pxref{Mail Group Commands}).
9968 All the mail messages in the mbox file will now also be spread out over
9969 all your @code{nnml} groups. Try entering them and check whether things
9970 have gone without a glitch. If things look ok, you may consider
9971 deleting the mbox file, but I wouldn't do that unless I was absolutely
9972 sure that all the mail has ended up where it should be.
9974 Respooling is also a handy thing to do if you're switching from one mail
9975 backend to another. Just respool all the mail in the old mail groups
9976 using the new mail backend.
9980 @subsection Expiring Mail
9981 @cindex article expiry
9983 Traditional mail readers have a tendency to remove mail articles when
9984 you mark them as read, in some way. Gnus takes a fundamentally
9985 different approach to mail reading.
9987 Gnus basically considers mail just to be news that has been received in
9988 a rather peculiar manner. It does not think that it has the power to
9989 actually change the mail, or delete any mail messages. If you enter a
9990 mail group, and mark articles as ``read'', or kill them in some other
9991 fashion, the mail articles will still exist on the system. I repeat:
9992 Gnus will not delete your old, read mail. Unless you ask it to, of
9995 To make Gnus get rid of your unwanted mail, you have to mark the
9996 articles as @dfn{expirable}. This does not mean that the articles will
9997 disappear right away, however. In general, a mail article will be
9998 deleted from your system if, 1) it is marked as expirable, AND 2) it is
9999 more than one week old. If you do not mark an article as expirable, it
10000 will remain on your system until hell freezes over. This bears
10001 repeating one more time, with some spurious capitalizations: IF you do
10002 NOT mark articles as EXPIRABLE, Gnus will NEVER delete those ARTICLES.
10004 @vindex gnus-auto-expirable-newsgroups
10005 You do not have to mark articles as expirable by hand. Groups that
10006 match the regular expression @code{gnus-auto-expirable-newsgroups} will
10007 have all articles that you read marked as expirable automatically. All
10008 articles marked as expirable have an @samp{E} in the first
10009 column in the summary buffer.
10011 By default, if you have auto expiry switched on, Gnus will mark all the
10012 articles you read as expirable, no matter if they were read or unread
10013 before. To avoid having articles marked as read marked as expirable
10014 automatically, you can put something like the following in your
10017 @vindex gnus-mark-article-hook
10019 (remove-hook 'gnus-mark-article-hook
10020 'gnus-summary-mark-read-and-unread-as-read)
10021 (add-hook 'gnus-mark-article-hook 'gnus-summary-mark-unread-as-read)
10024 Note that making a group auto-expirable doesn't mean that all read
10025 articles are expired---only the articles marked as expirable
10026 will be expired. Also note that using the @kbd{d} command won't make
10027 groups expirable---only semi-automatic marking of articles as read will
10028 mark the articles as expirable in auto-expirable groups.
10030 Let's say you subscribe to a couple of mailing lists, and you want the
10031 articles you have read to disappear after a while:
10034 (setq gnus-auto-expirable-newsgroups
10035 "mail.nonsense-list\\|mail.nice-list")
10038 Another way to have auto-expiry happen is to have the element
10039 @code{auto-expire} in the group parameters of the group.
10041 If you use adaptive scoring (@pxref{Adaptive Scoring}) and
10042 auto-expiring, you'll have problems. Auto-expiring and adaptive scoring
10043 don't really mix very well.
10045 @vindex nnmail-expiry-wait
10046 The @code{nnmail-expiry-wait} variable supplies the default time an
10047 expirable article has to live. Gnus starts counting days from when the
10048 message @emph{arrived}, not from when it was sent. The default is seven
10051 Gnus also supplies a function that lets you fine-tune how long articles
10052 are to live, based on what group they are in. Let's say you want to
10053 have one month expiry period in the @samp{mail.private} group, a one day
10054 expiry period in the @samp{mail.junk} group, and a six day expiry period
10057 @vindex nnmail-expiry-wait-function
10059 (setq nnmail-expiry-wait-function
10061 (cond ((string= group "mail.private")
10063 ((string= group "mail.junk")
10065 ((string= group "important")
10071 The group names this function is fed are ``unadorned'' group
10072 names---no @samp{nnml:} prefixes and the like.
10074 The @code{nnmail-expiry-wait} variable and
10075 @code{nnmail-expiry-wait-function} function can either be a number (not
10076 necessarily an integer) or one of the symbols @code{immediate} or
10079 You can also use the @code{expiry-wait} group parameter to selectively
10080 change the expiry period (@pxref{Group Parameters}).
10082 @vindex nnmail-keep-last-article
10083 If @code{nnmail-keep-last-article} is non-@code{nil}, Gnus will never
10084 expire the final article in a mail newsgroup. This is to make life
10085 easier for procmail users.
10087 @vindex gnus-total-expirable-newsgroups
10088 By the way: That line up there, about Gnus never expiring non-expirable
10089 articles, is a lie. If you put @code{total-expire} in the group
10090 parameters, articles will not be marked as expirable, but all read
10091 articles will be put through the expiry process. Use with extreme
10092 caution. Even more dangerous is the
10093 @code{gnus-total-expirable-newsgroups} variable. All groups that match
10094 this regexp will have all read articles put through the expiry process,
10095 which means that @emph{all} old mail articles in the groups in question
10096 will be deleted after a while. Use with extreme caution, and don't come
10097 crying to me when you discover that the regexp you used matched the
10098 wrong group and all your important mail has disappeared. Be a
10099 @emph{man}! Or a @emph{woman}! Whatever you feel more comfortable
10102 Most people make most of their mail groups total-expirable, though.
10106 @subsection Washing Mail
10107 @cindex mail washing
10108 @cindex list server brain damage
10109 @cindex incoming mail treatment
10111 Mailers and list servers are notorious for doing all sorts of really,
10112 really stupid things with mail. ``Hey, RFC822 doesn't explicitly
10113 prohibit us from adding the string @code{wE aRe ElItE!!!!!1!!} to the
10114 end of all lines passing through our server, so let's do that!!!!1!''
10115 Yes, but RFC822 wasn't designed to be read by morons. Things that were
10116 considered to be self-evident were not discussed. So. Here we are.
10118 Case in point: The German version of Microsoft Exchange adds @samp{AW:
10119 } to the subjects of replies instead of @samp{Re: }. I could pretend to
10120 be shocked and dismayed by this, but I haven't got the energy. It is to
10123 Gnus provides a plethora of functions for washing articles while
10124 displaying them, but it might be nicer to do the filtering before
10125 storing the mail to disc. For that purpose, we have three hooks and
10126 various functions that can be put in these hooks.
10129 @item nnmail-prepare-incoming-hook
10130 @vindex nnmail-prepare-incoming-hook
10131 This hook is called before doing anything with the mail and is meant for
10132 grand, sweeping gestures. Functions to be used include:
10135 @item nnheader-ms-strip-cr
10136 @findex nnheader-ms-strip-cr
10137 Remove trailing carriage returns from each line. This is default on
10138 Emacs running on MS machines.
10142 @item nnmail-prepare-incoming-header-hook
10143 @vindex nnmail-prepare-incoming-header-hook
10144 This hook is called narrowed to each header. It can be used when
10145 cleaning up the headers. Functions that can be used include:
10148 @item nnmail-remove-leading-whitespace
10149 @findex nnmail-remove-leading-whitespace
10150 Clear leading white space that ``helpful'' listservs have added to the
10151 headers to make them look nice. Aaah.
10153 @item nnmail-remove-list-identifiers
10154 @findex nnmail-remove-list-identifiers
10155 Some list servers add an identifier---for example, @samp{(idm)}---to the
10156 beginning of all @code{Subject} headers. I'm sure that's nice for
10157 people who use stone age mail readers. This function will remove
10158 strings that match the @code{nnmail-list-identifiers} regexp, which can
10159 also be a list of regexp.
10161 For instance, if you want to remove the @samp{(idm)} and the
10162 @samp{nagnagnag} identifiers:
10165 (setq nnmail-list-identifiers
10166 '("(idm)" "nagnagnag"))
10169 @item nnmail-remove-tabs
10170 @findex nnmail-remove-tabs
10171 Translate all @samp{TAB} characters into @samp{SPACE} characters.
10175 @item nnmail-prepare-incoming-message-hook
10176 @vindex nnmail-prepare-incoming-message-hook
10177 This hook is called narrowed to each message. Functions to be used
10181 @item article-de-quoted-unreadable
10182 @findex article-de-quoted-unreadable
10183 Decode Quoted Readable encoding.
10190 @subsection Duplicates
10192 @vindex nnmail-treat-duplicates
10193 @vindex nnmail-message-id-cache-length
10194 @vindex nnmail-message-id-cache-file
10195 @cindex duplicate mails
10196 If you are a member of a couple of mailing lists, you will sometimes
10197 receive two copies of the same mail. This can be quite annoying, so
10198 @code{nnmail} checks for and treats any duplicates it might find. To do
10199 this, it keeps a cache of old @code{Message-ID}s---
10200 @code{nnmail-message-id-cache-file}, which is @file{~/.nnmail-cache} by
10201 default. The approximate maximum number of @code{Message-ID}s stored
10202 there is controlled by the @code{nnmail-message-id-cache-length}
10203 variable, which is 1000 by default. (So 1000 @code{Message-ID}s will be
10204 stored.) If all this sounds scary to you, you can set
10205 @code{nnmail-treat-duplicates} to @code{warn} (which is what it is by
10206 default), and @code{nnmail} won't delete duplicate mails. Instead it
10207 will insert a warning into the head of the mail saying that it thinks
10208 that this is a duplicate of a different message.
10210 This variable can also be a function. If that's the case, the function
10211 will be called from a buffer narrowed to the message in question with
10212 the @code{Message-ID} as a parameter. The function must return either
10213 @code{nil}, @code{warn}, or @code{delete}.
10215 You can turn this feature off completely by setting the variable to
10218 If you want all the duplicate mails to be put into a special
10219 @dfn{duplicates} group, you could do that using the normal mail split
10223 (setq nnmail-split-fancy
10224 '(| ;; Messages duplicates go to a separate group.
10225 ("gnus-warning" "duplication of message" "duplicate")
10226 ;; Message from daemons, postmaster, and the like to another.
10227 (any mail "mail.misc")
10234 (setq nnmail-split-methods
10235 '(("duplicates" "^Gnus-Warning:")
10240 Here's a neat feature: If you know that the recipient reads her mail
10241 with Gnus, and that she has @code{nnmail-treat-duplicates} set to
10242 @code{delete}, you can send her as many insults as you like, just by
10243 using a @code{Message-ID} of a mail that you know that she's already
10244 received. Think of all the fun! She'll never see any of it! Whee!
10247 @node Not Reading Mail
10248 @subsection Not Reading Mail
10250 If you start using any of the mail backends, they have the annoying
10251 habit of assuming that you want to read mail with them. This might not
10252 be unreasonable, but it might not be what you want.
10254 If you set @code{nnmail-spool-file} to @code{nil}, none of the backends
10255 will ever attempt to read incoming mail, which should help.
10257 @vindex nnbabyl-get-new-mail
10258 @vindex nnmbox-get-new-mail
10259 @vindex nnml-get-new-mail
10260 @vindex nnmh-get-new-mail
10261 @vindex nnfolder-get-new-mail
10262 This might be too much, if, for instance, you are reading mail quite
10263 happily with @code{nnml} and just want to peek at some old @sc{rmail}
10264 file you have stashed away with @code{nnbabyl}. All backends have
10265 variables called backend-@code{get-new-mail}. If you want to disable
10266 the @code{nnbabyl} mail reading, you edit the virtual server for the
10267 group to have a setting where @code{nnbabyl-get-new-mail} to @code{nil}.
10269 All the mail backends will call @code{nn}*@code{-prepare-save-mail-hook}
10270 narrowed to the article to be saved before saving it when reading
10274 @node Choosing a Mail Backend
10275 @subsection Choosing a Mail Backend
10277 Gnus will read the mail spool when you activate a mail group. The mail
10278 file is first copied to your home directory. What happens after that
10279 depends on what format you want to store your mail in.
10282 * Unix Mail Box:: Using the (quite) standard Un*x mbox.
10283 * Rmail Babyl:: Emacs programs use the rmail babyl format.
10284 * Mail Spool:: Store your mail in a private spool?
10285 * MH Spool:: An mhspool-like backend.
10286 * Mail Folders:: Having one file for each group.
10290 @node Unix Mail Box
10291 @subsubsection Unix Mail Box
10293 @cindex unix mail box
10295 @vindex nnmbox-active-file
10296 @vindex nnmbox-mbox-file
10297 The @dfn{nnmbox} backend will use the standard Un*x mbox file to store
10298 mail. @code{nnmbox} will add extra headers to each mail article to say
10299 which group it belongs in.
10301 Virtual server settings:
10304 @item nnmbox-mbox-file
10305 @vindex nnmbox-mbox-file
10306 The name of the mail box in the user's home directory.
10308 @item nnmbox-active-file
10309 @vindex nnmbox-active-file
10310 The name of the active file for the mail box.
10312 @item nnmbox-get-new-mail
10313 @vindex nnmbox-get-new-mail
10314 If non-@code{nil}, @code{nnmbox} will read incoming mail and split it
10320 @subsubsection Rmail Babyl
10324 @vindex nnbabyl-active-file
10325 @vindex nnbabyl-mbox-file
10326 The @dfn{nnbabyl} backend will use a babyl mail box (aka. @dfn{rmail
10327 mbox}) to store mail. @code{nnbabyl} will add extra headers to each mail
10328 article to say which group it belongs in.
10330 Virtual server settings:
10333 @item nnbabyl-mbox-file
10334 @vindex nnbabyl-mbox-file
10335 The name of the rmail mbox file.
10337 @item nnbabyl-active-file
10338 @vindex nnbabyl-active-file
10339 The name of the active file for the rmail box.
10341 @item nnbabyl-get-new-mail
10342 @vindex nnbabyl-get-new-mail
10343 If non-@code{nil}, @code{nnbabyl} will read incoming mail.
10348 @subsubsection Mail Spool
10350 @cindex mail @sc{nov} spool
10352 The @dfn{nnml} spool mail format isn't compatible with any other known
10353 format. It should be used with some caution.
10355 @vindex nnml-directory
10356 If you use this backend, Gnus will split all incoming mail into files,
10357 one file for each mail, and put the articles into the corresponding
10358 directories under the directory specified by the @code{nnml-directory}
10359 variable. The default value is @file{~/Mail/}.
10361 You do not have to create any directories beforehand; Gnus will take
10364 If you have a strict limit as to how many files you are allowed to store
10365 in your account, you should not use this backend. As each mail gets its
10366 own file, you might very well occupy thousands of inodes within a few
10367 weeks. If this is no problem for you, and it isn't a problem for you
10368 having your friendly systems administrator walking around, madly,
10369 shouting ``Who is eating all my inodes?! Who? Who!?!'', then you should
10370 know that this is probably the fastest format to use. You do not have
10371 to trudge through a big mbox file just to read your new mail.
10373 @code{nnml} is probably the slowest backend when it comes to article
10374 splitting. It has to create lots of files, and it also generates
10375 @sc{nov} databases for the incoming mails. This makes it the fastest
10376 backend when it comes to reading mail.
10378 Virtual server settings:
10381 @item nnml-directory
10382 @vindex nnml-directory
10383 All @code{nnml} directories will be placed under this directory.
10385 @item nnml-active-file
10386 @vindex nnml-active-file
10387 The active file for the @code{nnml} server.
10389 @item nnml-newsgroups-file
10390 @vindex nnml-newsgroups-file
10391 The @code{nnml} group descriptions file. @xref{Newsgroups File
10394 @item nnml-get-new-mail
10395 @vindex nnml-get-new-mail
10396 If non-@code{nil}, @code{nnml} will read incoming mail.
10398 @item nnml-nov-is-evil
10399 @vindex nnml-nov-is-evil
10400 If non-@code{nil}, this backend will ignore any @sc{nov} files.
10402 @item nnml-nov-file-name
10403 @vindex nnml-nov-file-name
10404 The name of the @sc{nov} files. The default is @file{.overview}.
10406 @item nnml-prepare-save-mail-hook
10407 @vindex nnml-prepare-save-mail-hook
10408 Hook run narrowed to an article before saving.
10412 @findex nnml-generate-nov-databases
10413 If your @code{nnml} groups and @sc{nov} files get totally out of whack,
10414 you can do a complete update by typing @kbd{M-x
10415 nnml-generate-nov-databases}. This command will trawl through the
10416 entire @code{nnml} hierarchy, looking at each and every article, so it
10417 might take a while to complete. A better interface to this
10418 functionality can be found in the server buffer (@pxref{Server
10423 @subsubsection MH Spool
10425 @cindex mh-e mail spool
10427 @code{nnmh} is just like @code{nnml}, except that is doesn't generate
10428 @sc{nov} databases and it doesn't keep an active file. This makes
10429 @code{nnmh} a @emph{much} slower backend than @code{nnml}, but it also
10430 makes it easier to write procmail scripts for.
10432 Virtual server settings:
10435 @item nnmh-directory
10436 @vindex nnmh-directory
10437 All @code{nnmh} directories will be located under this directory.
10439 @item nnmh-get-new-mail
10440 @vindex nnmh-get-new-mail
10441 If non-@code{nil}, @code{nnmh} will read incoming mail.
10444 @vindex nnmh-be-safe
10445 If non-@code{nil}, @code{nnmh} will go to ridiculous lengths to make
10446 sure that the articles in the folder are actually what Gnus thinks they
10447 are. It will check date stamps and stat everything in sight, so
10448 setting this to @code{t} will mean a serious slow-down. If you never
10449 use anything but Gnus to read the @code{nnmh} articles, you do not have
10450 to set this variable to @code{t}.
10455 @subsubsection Mail Folders
10457 @cindex mbox folders
10458 @cindex mail folders
10460 @code{nnfolder} is a backend for storing each mail group in a separate
10461 file. Each file is in the standard Un*x mbox format. @code{nnfolder}
10462 will add extra headers to keep track of article numbers and arrival
10465 Virtual server settings:
10468 @item nnfolder-directory
10469 @vindex nnfolder-directory
10470 All the @code{nnfolder} mail boxes will be stored under this directory.
10472 @item nnfolder-active-file
10473 @vindex nnfolder-active-file
10474 The name of the active file.
10476 @item nnfolder-newsgroups-file
10477 @vindex nnfolder-newsgroups-file
10478 The name of the group descriptions file. @xref{Newsgroups File Format}.
10480 @item nnfolder-get-new-mail
10481 @vindex nnfolder-get-new-mail
10482 If non-@code{nil}, @code{nnfolder} will read incoming mail.
10484 @item nnfolder-save-buffer-hook
10485 @vindex nnfolder-save-buffer-hook
10486 @cindex backup files
10487 Hook run before saving the folders. Note that Emacs does the normal
10488 backup renaming of files even with the @code{nnfolder} buffers. If you
10489 wish to switch this off, you could say something like the following in
10490 your @file{.emacs} file:
10493 (defun turn-off-backup ()
10494 (set (make-local-variable 'backup-inhibited) t))
10496 (add-hook 'nnfolder-save-buffer-hook 'turn-off-backup)
10499 @item nnfolder-delete-mail-hook
10500 @vindex nnfolder-delete-mail-hook
10501 Hook run in a buffer narrowed to the message that is to be deleted.
10502 This function can be used to copy the message to somewhere else, or to
10503 extract some information from it before removing it.
10508 @findex nnfolder-generate-active-file
10509 @kindex M-x nnfolder-generate-active-file
10510 If you have lots of @code{nnfolder}-like files you'd like to read with
10511 @code{nnfolder}, you can use the @kbd{M-x nnfolder-generate-active-file}
10512 command to make @code{nnfolder} aware of all likely files in
10513 @code{nnfolder-directory}.
10516 @node Other Sources
10517 @section Other Sources
10519 Gnus can do more than just read news or mail. The methods described
10520 below allow Gnus to view directories and files as if they were
10524 * Directory Groups:: You can read a directory as if it was a newsgroup.
10525 * Anything Groups:: Dired? Who needs dired?
10526 * Document Groups:: Single files can be the basis of a group.
10527 * SOUP:: Reading @sc{SOUP} packets ``offline''.
10528 * Web Searches:: Creating groups from articles that match a string.
10529 * Mail-To-News Gateways:: Posting articles via mail-to-news gateways.
10533 @node Directory Groups
10534 @subsection Directory Groups
10536 @cindex directory groups
10538 If you have a directory that has lots of articles in separate files in
10539 it, you might treat it as a newsgroup. The files have to have numerical
10542 This might be an opportune moment to mention @code{ange-ftp} (and its
10543 successor @code{efs}), that most wonderful of all wonderful Emacs
10544 packages. When I wrote @code{nndir}, I didn't think much about it---a
10545 backend to read directories. Big deal.
10547 @code{ange-ftp} changes that picture dramatically. For instance, if you
10548 enter the @code{ange-ftp} file name
10549 @file{/ftp.hpc.uh.edu:/pub/emacs/ding-list/} as the directory name,
10550 @code{ange-ftp} or @code{efs} will actually allow you to read this
10551 directory over at @samp{sina} as a newsgroup. Distributed news ahoy!
10553 @code{nndir} will use @sc{nov} files if they are present.
10555 @code{nndir} is a ``read-only'' backend---you can't delete or expire
10556 articles with this method. You can use @code{nnmh} or @code{nnml} for
10557 whatever you use @code{nndir} for, so you could switch to any of those
10558 methods if you feel the need to have a non-read-only @code{nndir}.
10561 @node Anything Groups
10562 @subsection Anything Groups
10565 From the @code{nndir} backend (which reads a single spool-like
10566 directory), it's just a hop and a skip to @code{nneething}, which
10567 pretends that any arbitrary directory is a newsgroup. Strange, but
10570 When @code{nneething} is presented with a directory, it will scan this
10571 directory and assign article numbers to each file. When you enter such
10572 a group, @code{nneething} must create ``headers'' that Gnus can use.
10573 After all, Gnus is a newsreader, in case you're
10574 forgetting. @code{nneething} does this in a two-step process. First, it
10575 snoops each file in question. If the file looks like an article (i.e.,
10576 the first few lines look like headers), it will use this as the head.
10577 If this is just some arbitrary file without a head (e.g. a C source
10578 file), @code{nneething} will cobble up a header out of thin air. It
10579 will use file ownership, name and date and do whatever it can with these
10582 All this should happen automatically for you, and you will be presented
10583 with something that looks very much like a newsgroup. Totally like a
10584 newsgroup, to be precise. If you select an article, it will be displayed
10585 in the article buffer, just as usual.
10587 If you select a line that represents a directory, Gnus will pop you into
10588 a new summary buffer for this @code{nneething} group. And so on. You can
10589 traverse the entire disk this way, if you feel like, but remember that
10590 Gnus is not dired, really, and does not intend to be, either.
10592 There are two overall modes to this action---ephemeral or solid. When
10593 doing the ephemeral thing (i.e., @kbd{G D} from the group buffer), Gnus
10594 will not store information on what files you have read, and what files
10595 are new, and so on. If you create a solid @code{nneething} group the
10596 normal way with @kbd{G m}, Gnus will store a mapping table between
10597 article numbers and file names, and you can treat this group like any
10598 other groups. When you activate a solid @code{nneething} group, you will
10599 be told how many unread articles it contains, etc., etc.
10604 @item nneething-map-file-directory
10605 @vindex nneething-map-file-directory
10606 All the mapping files for solid @code{nneething} groups will be stored
10607 in this directory, which defaults to @file{~/.nneething/}.
10609 @item nneething-exclude-files
10610 @vindex nneething-exclude-files
10611 All files that match this regexp will be ignored. Nice to use to exclude
10612 auto-save files and the like, which is what it does by default.
10614 @item nneething-map-file
10615 @vindex nneething-map-file
10616 Name of the map files.
10620 @node Document Groups
10621 @subsection Document Groups
10623 @cindex documentation group
10626 @code{nndoc} is a cute little thing that will let you read a single file
10627 as a newsgroup. Several files types are supported:
10634 The babyl (rmail) mail box.
10639 The standard Unix mbox file.
10641 @cindex MMDF mail box
10643 The MMDF mail box format.
10646 Several news articles appended into a file.
10649 @cindex rnews batch files
10650 The rnews batch transport format.
10651 @cindex forwarded messages
10654 Forwarded articles.
10657 MIME multipart messages, besides digests.
10661 @cindex MIME digest
10662 @cindex 1153 digest
10663 @cindex RFC 1153 digest
10664 @cindex RFC 341 digest
10665 MIME (RFC 1341) digest format.
10667 @item standard-digest
10668 The standard (RFC 1153) digest format.
10671 Non-standard digest format---matches most things, but does it badly.
10674 You can also use the special ``file type'' @code{guess}, which means
10675 that @code{nndoc} will try to guess what file type it is looking at.
10676 @code{digest} means that @code{nndoc} should guess what digest type the
10679 @code{nndoc} will not try to change the file or insert any extra headers into
10680 it---it will simply, like, let you use the file as the basis for a
10681 group. And that's it.
10683 If you have some old archived articles that you want to insert into your
10684 new & spiffy Gnus mail backend, @code{nndoc} can probably help you with
10685 that. Say you have an old @file{RMAIL} file with mail that you now want
10686 to split into your new @code{nnml} groups. You look at that file using
10687 @code{nndoc} (using the @kbd{G f} command in the group buffer
10688 (@pxref{Foreign Groups})), set the process mark on all the articles in
10689 the buffer (@kbd{M P b}, for instance), and then re-spool (@kbd{B r})
10690 using @code{nnml}. If all goes well, all the mail in the @file{RMAIL}
10691 file is now also stored in lots of @code{nnml} directories, and you can
10692 delete that pesky @file{RMAIL} file. If you have the guts!
10694 Virtual server variables:
10697 @item nndoc-article-type
10698 @vindex nndoc-article-type
10699 This should be one of @code{mbox}, @code{babyl}, @code{digest},
10700 @code{news}, @code{rnews}, @code{mmdf}, @code{forward}, @code{rfc934},
10701 @code{rfc822-forward}, @code{mime-parts}, @code{mime-digest},
10702 @code{standard-digest}, @code{slack-digest}, @code{clari-briefs} or
10705 @item nndoc-post-type
10706 @vindex nndoc-post-type
10707 This variable says whether Gnus is to consider the group a news group or
10708 a mail group. There are two valid values: @code{mail} (the default)
10713 * Document Server Internals:: How to add your own document types.
10717 @node Document Server Internals
10718 @subsubsection Document Server Internals
10720 Adding new document types to be recognized by @code{nndoc} isn't
10721 difficult. You just have to whip up a definition of what the document
10722 looks like, write a predicate function to recognize that document type,
10723 and then hook into @code{nndoc}.
10725 First, here's an example document type definition:
10729 (article-begin . "^\^A\^A\^A\^A\n")
10730 (body-end . "^\^A\^A\^A\^A\n"))
10733 The definition is simply a unique @dfn{name} followed by a series of
10734 regexp pseudo-variable settings. Below are the possible
10735 variables---don't be daunted by the number of variables; most document
10736 types can be defined with very few settings:
10739 @item first-article
10740 If present, @code{nndoc} will skip past all text until it finds
10741 something that match this regexp. All text before this will be
10744 @item article-begin
10745 This setting has to be present in all document type definitions. It
10746 says what the beginning of each article looks like.
10748 @item head-begin-function
10749 If present, this should be a function that moves point to the head of
10752 @item nndoc-head-begin
10753 If present, this should be a regexp that matches the head of the
10756 @item nndoc-head-end
10757 This should match the end of the head of the article. It defaults to
10758 @samp{^$}---the empty line.
10760 @item body-begin-function
10761 If present, this function should move point to the beginning of the body
10765 This should match the beginning of the body of the article. It defaults
10768 @item body-end-function
10769 If present, this function should move point to the end of the body of
10773 If present, this should match the end of the body of the article.
10776 If present, this should match the end of the file. All text after this
10777 regexp will be totally ignored.
10781 So, using these variables @code{nndoc} is able to dissect a document
10782 file into a series of articles, each with a head and a body. However, a
10783 few more variables are needed since not all document types are all that
10784 news-like---variables needed to transform the head or the body into
10785 something that's palatable for Gnus:
10788 @item prepare-body-function
10789 If present, this function will be called when requesting an article. It
10790 will be called with point at the start of the body, and is useful if the
10791 document has encoded some parts of its contents.
10793 @item article-transform-function
10794 If present, this function is called when requesting an article. It's
10795 meant to be used for more wide-ranging transformation of both head and
10796 body of the article.
10798 @item generate-head-function
10799 If present, this function is called to generate a head that Gnus can
10800 understand. It is called with the article number as a parameter, and is
10801 expected to generate a nice head for the article in question. It is
10802 called when requesting the headers of all articles.
10806 Let's look at the most complicated example I can come up with---standard
10811 (first-article . ,(concat "^" (make-string 70 ?-) "\n\n+"))
10812 (article-begin . ,(concat "\n\n" (make-string 30 ?-) "\n\n+"))
10813 (prepare-body-function . nndoc-unquote-dashes)
10814 (body-end-function . nndoc-digest-body-end)
10815 (head-end . "^ ?$")
10816 (body-begin . "^ ?\n")
10817 (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
10818 (subtype digest guess))
10821 We see that all text before a 70-width line of dashes is ignored; all
10822 text after a line that starts with that @samp{^End of} is also ignored;
10823 each article begins with a 30-width line of dashes; the line separating
10824 the head from the body may contain a single space; and that the body is
10825 run through @code{nndoc-unquote-dashes} before being delivered.
10827 To hook your own document definition into @code{nndoc}, use the
10828 @code{nndoc-add-type} function. It takes two parameters---the first is
10829 the definition itself and the second (optional) parameter says where in
10830 the document type definition alist to put this definition. The alist is
10831 traversed sequentially, and @code{nndoc-TYPE-type-p} is called for a given type @code{TYPE}. So @code{nndoc-mmdf-type-p} is called to see whether a document
10832 is of @code{mmdf} type, and so on. These type predicates should return
10833 @code{nil} if the document is not of the correct type; @code{t} if it is
10834 of the correct type; and a number if the document might be of the
10835 correct type. A high number means high probability; a low number means
10836 low probability with @samp{0} being the lowest valid number.
10844 In the PC world people often talk about ``offline'' newsreaders. These
10845 are thingies that are combined reader/news transport monstrosities.
10846 With built-in modem programs. Yecchh!
10848 Of course, us Unix Weenie types of human beans use things like
10849 @code{uucp} and, like, @code{nntpd} and set up proper news and mail
10850 transport things like Ghod intended. And then we just use normal
10853 However, it can sometimes be convenient to do something a that's a bit
10854 easier on the brain if you have a very slow modem, and you're not really
10855 that interested in doing things properly.
10857 A file format called @sc{soup} has been developed for transporting news
10858 and mail from servers to home machines and back again. It can be a bit
10861 First some terminology:
10866 This is the machine that is connected to the outside world and where you
10867 get news and/or mail from.
10870 This is the machine that you want to do the actual reading and responding
10871 on. It is typically not connected to the rest of the world in any way.
10874 Something that contains messages and/or commands. There are two kinds
10878 @item message packets
10879 These are packets made at the server, and typically contain lots of
10880 messages for you to read. These are called @file{SoupoutX.tgz} by
10881 default, where @var{X} is a number.
10883 @item response packets
10884 These are packets made at the home machine, and typically contains
10885 replies that you've written. These are called @file{SoupinX.tgz} by
10886 default, where @var{X} is a number.
10896 You log in on the server and create a @sc{soup} packet. You can either
10897 use a dedicated @sc{soup} thingie (like the @code{awk} program), or you
10898 can use Gnus to create the packet with its @sc{soup} commands (@kbd{O
10899 s} and/or @kbd{G s b}; and then @kbd{G s p}) (@pxref{SOUP Commands}).
10902 You transfer the packet home. Rail, boat, car or modem will do fine.
10905 You put the packet in your home directory.
10908 You fire up Gnus on your home machine using the @code{nnsoup} backend as
10909 the native or secondary server.
10912 You read articles and mail and answer and followup to the things you
10913 want (@pxref{SOUP Replies}).
10916 You do the @kbd{G s r} command to pack these replies into a @sc{soup}
10920 You transfer this packet to the server.
10923 You use Gnus to mail this packet out with the @kbd{G s s} command.
10926 You then repeat until you die.
10930 So you basically have a bipartite system---you use @code{nnsoup} for
10931 reading and Gnus for packing/sending these @sc{soup} packets.
10934 * SOUP Commands:: Commands for creating and sending @sc{soup} packets
10935 * SOUP Groups:: A backend for reading @sc{soup} packets.
10936 * SOUP Replies:: How to enable @code{nnsoup} to take over mail and news.
10940 @node SOUP Commands
10941 @subsubsection SOUP Commands
10943 These are commands for creating and manipulating @sc{soup} packets.
10947 @kindex G s b (Group)
10948 @findex gnus-group-brew-soup
10949 Pack all unread articles in the current group
10950 (@code{gnus-group-brew-soup}). This command understands the
10951 process/prefix convention.
10954 @kindex G s w (Group)
10955 @findex gnus-soup-save-areas
10956 Save all @sc{soup} data files (@code{gnus-soup-save-areas}).
10959 @kindex G s s (Group)
10960 @findex gnus-soup-send-replies
10961 Send all replies from the replies packet
10962 (@code{gnus-soup-send-replies}).
10965 @kindex G s p (Group)
10966 @findex gnus-soup-pack-packet
10967 Pack all files into a @sc{soup} packet (@code{gnus-soup-pack-packet}).
10970 @kindex G s r (Group)
10971 @findex nnsoup-pack-replies
10972 Pack all replies into a replies packet (@code{nnsoup-pack-replies}).
10975 @kindex O s (Summary)
10976 @findex gnus-soup-add-article
10977 This summary-mode command adds the current article to a @sc{soup} packet
10978 (@code{gnus-soup-add-article}). It understands the process/prefix
10979 convention (@pxref{Process/Prefix}).
10984 There are a few variables to customize where Gnus will put all these
10989 @item gnus-soup-directory
10990 @vindex gnus-soup-directory
10991 Directory where Gnus will save intermediate files while composing
10992 @sc{soup} packets. The default is @file{~/SoupBrew/}.
10994 @item gnus-soup-replies-directory
10995 @vindex gnus-soup-replies-directory
10996 This is what Gnus will use as a temporary directory while sending our
10997 reply packets. @file{~/SoupBrew/SoupReplies/} is the default.
10999 @item gnus-soup-prefix-file
11000 @vindex gnus-soup-prefix-file
11001 Name of the file where Gnus stores the last used prefix. The default is
11002 @samp{gnus-prefix}.
11004 @item gnus-soup-packer
11005 @vindex gnus-soup-packer
11006 A format string command for packing a @sc{soup} packet. The default is
11007 @samp{tar cf - %s | gzip > $HOME/Soupout%d.tgz}.
11009 @item gnus-soup-unpacker
11010 @vindex gnus-soup-unpacker
11011 Format string command for unpacking a @sc{soup} packet. The default is
11012 @samp{gunzip -c %s | tar xvf -}.
11014 @item gnus-soup-packet-directory
11015 @vindex gnus-soup-packet-directory
11016 Where Gnus will look for reply packets. The default is @file{~/}.
11018 @item gnus-soup-packet-regexp
11019 @vindex gnus-soup-packet-regexp
11020 Regular expression matching @sc{soup} reply packets in
11021 @code{gnus-soup-packet-directory}.
11027 @subsubsection @sc{soup} Groups
11030 @code{nnsoup} is the backend for reading @sc{soup} packets. It will
11031 read incoming packets, unpack them, and put them in a directory where
11032 you can read them at leisure.
11034 These are the variables you can use to customize its behavior:
11038 @item nnsoup-tmp-directory
11039 @vindex nnsoup-tmp-directory
11040 When @code{nnsoup} unpacks a @sc{soup} packet, it does it in this
11041 directory. (@file{/tmp/} by default.)
11043 @item nnsoup-directory
11044 @vindex nnsoup-directory
11045 @code{nnsoup} then moves each message and index file to this directory.
11046 The default is @file{~/SOUP/}.
11048 @item nnsoup-replies-directory
11049 @vindex nnsoup-replies-directory
11050 All replies will be stored in this directory before being packed into a
11051 reply packet. The default is @file{~/SOUP/replies/"}.
11053 @item nnsoup-replies-format-type
11054 @vindex nnsoup-replies-format-type
11055 The @sc{soup} format of the replies packets. The default is @samp{?n}
11056 (rnews), and I don't think you should touch that variable. I probably
11057 shouldn't even have documented it. Drats! Too late!
11059 @item nnsoup-replies-index-type
11060 @vindex nnsoup-replies-index-type
11061 The index type of the replies packet. The default is @samp{?n}, which
11062 means ``none''. Don't fiddle with this one either!
11064 @item nnsoup-active-file
11065 @vindex nnsoup-active-file
11066 Where @code{nnsoup} stores lots of information. This is not an ``active
11067 file'' in the @code{nntp} sense; it's an Emacs Lisp file. If you lose
11068 this file or mess it up in any way, you're dead. The default is
11069 @file{~/SOUP/active}.
11071 @item nnsoup-packer
11072 @vindex nnsoup-packer
11073 Format string command for packing a reply @sc{soup} packet. The default
11074 is @samp{tar cf - %s | gzip > $HOME/Soupin%d.tgz}.
11076 @item nnsoup-unpacker
11077 @vindex nnsoup-unpacker
11078 Format string command for unpacking incoming @sc{soup} packets. The
11079 default is @samp{gunzip -c %s | tar xvf -}.
11081 @item nnsoup-packet-directory
11082 @vindex nnsoup-packet-directory
11083 Where @code{nnsoup} will look for incoming packets. The default is
11086 @item nnsoup-packet-regexp
11087 @vindex nnsoup-packet-regexp
11088 Regular expression matching incoming @sc{soup} packets. The default is
11091 @item nnsoup-always-save
11092 @vindex nnsoup-always-save
11093 If non-@code{nil}, save the replies buffer after each posted message.
11099 @subsubsection SOUP Replies
11101 Just using @code{nnsoup} won't mean that your postings and mailings end
11102 up in @sc{soup} reply packets automagically. You have to work a bit
11103 more for that to happen.
11105 @findex nnsoup-set-variables
11106 The @code{nnsoup-set-variables} command will set the appropriate
11107 variables to ensure that all your followups and replies end up in the
11110 In specific, this is what it does:
11113 (setq message-send-news-function 'nnsoup-request-post)
11114 (setq message-send-mail-function 'nnsoup-request-mail)
11117 And that's it, really. If you only want news to go into the @sc{soup}
11118 system you just use the first line. If you only want mail to be
11119 @sc{soup}ed you use the second.
11123 @subsection Web Searches
11127 @cindex InReference
11128 @cindex Usenet searches
11129 @cindex searching the Usenet
11131 It's, like, too neat to search the Usenet for articles that match a
11132 string, but it, like, totally @emph{sucks}, like, totally, to use one of
11133 those, like, Web browsers, and you, like, have to, rilly, like, look at
11134 the commercials, so, like, with Gnus you can do @emph{rad}, rilly,
11135 searches without having to use a browser.
11137 The @code{nnweb} backend allows an easy interface to the mighty search
11138 engine. You create an @code{nnweb} group, enter a search pattern, and
11139 then enter the group and read the articles like you would any normal
11140 group. The @kbd{G w} command in the group buffer (@pxref{Foreign
11141 Groups}) will do this in an easy-to-use fashion.
11143 @code{nnweb} groups don't really lend themselves to being solid
11144 groups---they have a very fleeting idea of article numbers. In fact,
11145 each time you enter an @code{nnweb} group (not even changing the search
11146 pattern), you are likely to get the articles ordered in a different
11147 manner. Not even using duplicate suppression (@pxref{Duplicate
11148 Suppression}) will help, since @code{nnweb} doesn't even know the
11149 @code{Message-ID} of the articles before reading them using some search
11150 engines (DejaNews, for instance). The only possible way to keep track
11151 of which articles you've read is by scoring on the @code{Date}
11152 header---mark all articles posted before the last date you read the
11155 If the search engine changes its output substantially, @code{nnweb}
11156 won't be able to parse it and will fail. One could hardly fault the Web
11157 providers if they were to do this---their @emph{raison d'être} is to
11158 make money off of advertisements, not to provide services to the
11159 community. Since @code{nnweb} washes the ads off all the articles, one
11160 might think that the providers might be somewhat miffed. We'll see.
11162 You must have the @code{url} and @code{w3} package installed to be able
11163 to use @code{nnweb}.
11165 Virtual server variables:
11170 What search engine type is being used. The currently supported types
11171 are @code{dejanews}, @code{dejanewsold}, @code{altavista} and
11175 @vindex nnweb-search
11176 The search string to feed to the search engine.
11178 @item nnweb-max-hits
11179 @vindex nnweb-max-hits
11180 Advisory maximum number of hits per search to display. The default is
11183 @item nnweb-type-definition
11184 @vindex nnweb-type-definition
11185 Type-to-definition alist. This alist says what @code{nnweb} should do
11186 with the various search engine types. The following elements must be
11191 Function to decode the article and provide something that Gnus
11195 Function to create an article number to message header and URL alist.
11198 Function to send the search string to the search engine.
11201 The address the aforementioned function should send the search string
11205 Format string URL to fetch an article by @code{Message-ID}.
11212 @node Mail-To-News Gateways
11213 @subsection Mail-To-News Gateways
11214 @cindex mail-to-news gateways
11217 If your local @code{nntp} server doesn't allow posting, for some reason
11218 or other, you can post using one of the numerous mail-to-news gateways.
11219 The @code{nngateway} backend provides the interface.
11221 Note that you can't read anything from this backend---it can only be
11227 @item nngateway-address
11228 @vindex nngateway-address
11229 This is the address of the mail-to-news gateway.
11231 @item nngateway-header-transformation
11232 @vindex nngateway-header-transformation
11233 News headers often have to be transformed in some odd way or other
11234 for the mail-to-news gateway to accept it. This variable says what
11235 transformation should be called, and defaults to
11236 @code{nngateway-simple-header-transformation}. The function is called
11237 narrowed to the headers to be transformed and with one parameter---the
11240 This default function just inserts a new @code{To} header based on the
11241 @code{Newsgroups} header and the gateway address.
11242 For instance, an article with this @code{Newsgroups} header:
11245 Newsgroups: alt.religion.emacs
11248 will get this @code{From} header inserted:
11251 To: alt-religion-emacs@@GATEWAY
11254 The following pre-defined functions exist:
11256 @findex nngateway-simple-header-transformation
11259 @item nngateway-simple-header-transformation
11260 Creates a @code{To} header that looks like
11261 @var{newsgroup}@@@code{nngateway-address}.
11263 @findex nngateway-mail2news-header-transformation
11265 @item nngateway-mail2news-header-transformation
11266 Creates a @code{To} header that looks like
11267 @code{nngateway-address}.
11272 (setq gnus-post-method
11273 '(nngateway "mail2news@@replay.com"
11274 (nngateway-header-transformation
11275 nngateway-mail2news-header-transformation)))
11283 So, to use this, simply say something like:
11286 (setq gnus-post-method '(nngateway "GATEWAY.ADDRESS"))
11290 @node Combined Groups
11291 @section Combined Groups
11293 Gnus allows combining a mixture of all the other group types into bigger
11297 * Virtual Groups:: Combining articles from many groups.
11298 * Kibozed Groups:: Looking through parts of the newsfeed for articles.
11302 @node Virtual Groups
11303 @subsection Virtual Groups
11305 @cindex virtual groups
11306 @cindex merging groups
11308 An @dfn{nnvirtual group} is really nothing more than a collection of
11311 For instance, if you are tired of reading many small groups, you can
11312 put them all in one big group, and then grow tired of reading one
11313 big, unwieldy group. The joys of computing!
11315 You specify @code{nnvirtual} as the method. The address should be a
11316 regexp to match component groups.
11318 All marks in the virtual group will stick to the articles in the
11319 component groups. So if you tick an article in a virtual group, the
11320 article will also be ticked in the component group from whence it came.
11321 (And vice versa---marks from the component groups will also be shown in
11322 the virtual group.)
11324 Here's an example @code{nnvirtual} method that collects all Andrea Dworkin
11325 newsgroups into one, big, happy newsgroup:
11328 (nnvirtual "^alt\\.fan\\.andrea-dworkin$\\|^rec\\.dworkin.*")
11331 The component groups can be native or foreign; everything should work
11332 smoothly, but if your computer explodes, it was probably my fault.
11334 Collecting the same group from several servers might actually be a good
11335 idea if users have set the Distribution header to limit distribution.
11336 If you would like to read @samp{soc.motss} both from a server in Japan
11337 and a server in Norway, you could use the following as the group regexp:
11340 "^nntp\\+server\\.jp:soc\\.motss$\\|^nntp\\+server\\.no:soc\\.motss$"
11343 (Remember, though, that if you're creating the group with @kbd{G m}, you
11344 shouldn't double the backslashes, and you should leave off the quote
11345 characters at the beginning and the end of the string.)
11347 This should work kinda smoothly---all articles from both groups should
11348 end up in this one, and there should be no duplicates. Threading (and
11349 the rest) will still work as usual, but there might be problems with the
11350 sequence of articles. Sorting on date might be an option here
11351 (@pxref{Selecting a Group}).
11353 One limitation, however---all groups included in a virtual
11354 group have to be alive (i.e., subscribed or unsubscribed). Killed or
11355 zombie groups can't be component groups for @code{nnvirtual} groups.
11357 @vindex nnvirtual-always-rescan
11358 If the @code{nnvirtual-always-rescan} is non-@code{nil},
11359 @code{nnvirtual} will always scan groups for unread articles when
11360 entering a virtual group. If this variable is @code{nil} (which is the
11361 default) and you read articles in a component group after the virtual
11362 group has been activated, the read articles from the component group
11363 will show up when you enter the virtual group. You'll also see this
11364 effect if you have two virtual groups that have a component group in
11365 common. If that's the case, you should set this variable to @code{t}.
11366 Or you can just tap @code{M-g} on the virtual group every time before
11367 you enter it---it'll have much the same effect.
11369 @code{nnvirtual} can have both mail and news groups as component groups.
11370 When responding to articles in @code{nnvirtual} groups, @code{nnvirtual}
11371 has to ask the backend of the component group the article comes from
11372 whether it is a news or mail backend. However, when you do a @kbd{^},
11373 there is typically no sure way for the component backend to know this,
11374 and in that case @code{nnvirtual} tells Gnus that the article came from a
11375 not-news backend. (Just to be on the safe side.)
11377 @kbd{C-c C-t} in the message buffer will insert the @code{Newsgroups}
11378 line from the article you respond to in these cases.
11382 @node Kibozed Groups
11383 @subsection Kibozed Groups
11387 @dfn{Kibozing} is defined by @sc{oed} as ``grepping through (parts of)
11388 the news feed''. @code{nnkiboze} is a backend that will do this for
11389 you. Oh joy! Now you can grind any @sc{nntp} server down to a halt
11390 with useless requests! Oh happiness!
11392 @kindex G k (Group)
11393 To create a kibozed group, use the @kbd{G k} command in the group
11396 The address field of the @code{nnkiboze} method is, as with
11397 @code{nnvirtual}, a regexp to match groups to be ``included'' in the
11398 @code{nnkiboze} group. That's where most similarities between @code{nnkiboze}
11399 and @code{nnvirtual} end.
11401 In addition to this regexp detailing component groups, an @code{nnkiboze} group
11402 must have a score file to say what articles are to be included in
11403 the group (@pxref{Scoring}).
11405 @kindex M-x nnkiboze-generate-groups
11406 @findex nnkiboze-generate-groups
11407 You must run @kbd{M-x nnkiboze-generate-groups} after creating the
11408 @code{nnkiboze} groups you want to have. This command will take time. Lots of
11409 time. Oodles and oodles of time. Gnus has to fetch the headers from
11410 all the articles in all the component groups and run them through the
11411 scoring process to determine if there are any articles in the groups
11412 that are to be part of the @code{nnkiboze} groups.
11414 Please limit the number of component groups by using restrictive
11415 regexps. Otherwise your sysadmin may become annoyed with you, and the
11416 @sc{nntp} site may throw you off and never let you back in again.
11417 Stranger things have happened.
11419 @code{nnkiboze} component groups do not have to be alive---they can be dead,
11420 and they can be foreign. No restrictions.
11422 @vindex nnkiboze-directory
11423 The generation of an @code{nnkiboze} group means writing two files in
11424 @code{nnkiboze-directory}, which is @file{~/News/} by default. One
11425 contains the @sc{nov} header lines for all the articles in the group,
11426 and the other is an additional @file{.newsrc} file to store information
11427 on what groups have been searched through to find component articles.
11429 Articles marked as read in the @code{nnkiboze} group will have
11430 their @sc{nov} lines removed from the @sc{nov} file.
11433 @node Gnus Unplugged
11434 @section Gnus Unplugged
11439 @cindex Gnus Unplugged
11441 In olden times (ca. February '88), people used to run their newsreaders
11442 on big machines with permanent connections to the net. News transport
11443 was dealt with by news servers, and all the newsreaders had to do was to
11444 read news. Believe it or not.
11446 Nowadays most people read news and mail at home, and use some sort of
11447 modem to connect to the net. To avoid running up huge phone bills, it
11448 would be nice to have a way to slurp down all the news and mail, hang up
11449 the phone, read for several hours, and then upload any responses you
11450 have to make. And then you repeat the procedure.
11452 Of course, you can use news servers for doing this as well. I've used
11453 @code{inn} together with @code{slurp}, @code{pop} and @code{sendmail}
11454 for some years, but doing that's a bore. Moving the news server
11455 functionality up to the newsreader makes sense if you're the only person
11456 reading news on a machine.
11458 Using Gnus as an ``offline'' newsreader is quite simple.
11462 First, set up Gnus as you would do if you were running it on a machine
11463 that has full connection to the net. Go ahead. I'll still be waiting
11467 Then, put the following magical incantation at the end of your
11468 @file{.gnus.el} file:
11475 That's it. Gnus is now an ``offline'' newsreader.
11477 Of course, to use it as such, you have to learn a few new commands.
11480 * Agent Basics:: How it all is supposed to work.
11481 * Agent Categories:: How to tell the Gnus Agent what to download.
11482 * Agent Commands:: New commands for all the buffers.
11483 * Agent Expiry:: How to make old articles go away.
11484 * Outgoing Messages:: What happens when you post/mail something?
11485 * Agent Variables:: Customizing is fun.
11486 * Example Setup:: An example @file{.gnus.el} file for offline people.
11487 * Batching Agents:: How to fetch news from a @code{cron} job.
11492 @subsection Agent Basics
11494 First, let's get some terminology out of the way.
11496 The Gnus Agent is said to be @dfn{unplugged} when you have severed the
11497 connection to the net (and notified the Agent that this is the case).
11498 When the connection to the net is up again (and Gnus knows this), the
11499 Agent is @dfn{plugged}.
11501 The @dfn{local} machine is the one you're running on, and which isn't
11502 connected to the net continuously.
11504 @dfn{Downloading} means fetching things from the net to your local
11505 machine. @dfn{Uploading} is doing the opposite.
11507 Let's take a typical Gnus session using the Agent.
11512 You start Gnus with @code{gnus-unplugged}. This brings up the Gnus
11513 Agent in a disconnected state. You can read all the news that you have
11514 already fetched while in this mode.
11517 You then decide to see whether any new news has arrived. You connect
11518 your machine to the net (using PPP or whatever), and then hit @kbd{J j}
11519 to make Gnus become @dfn{plugged}.
11522 You can then read the new news immediately, or you can download the news
11523 onto your local machine. If you want to do the latter, you press @kbd{J
11524 s} to fetch all the eligible articles in all the groups. (To let Gnus
11525 know which articles you want to download, @pxref{Agent Categories}.)
11528 After fetching the articles, you press @kbd{J j} to make Gnus become
11529 unplugged again, and you shut down the PPP thing (or whatever). And
11530 then you read the news offline.
11533 And then you go to step 2.
11536 Here are some things you should do the first time (or so) that you use
11542 Decide which servers should be covered by the Agent. If you have a mail
11543 backend, it would probably be nonsensical to have it covered by the
11544 Agent. Go to the server buffer (@kbd{^} in the group buffer) and press
11545 @kbd{J a} the server (or servers) that you wish to have covered by the
11546 Agent (@pxref{Server Agent Commands}). This will typically be only the
11547 primary select method, which is listed on the bottom in the buffer.
11550 Decide on download policy. @xref{Agent Categories}
11557 @node Agent Categories
11558 @subsection Agent Categories
11560 One of the main reasons to integrate the news transport layer into the
11561 newsreader is to allow greater control over what articles to download.
11562 There's not much point in downloading huge amounts of articles, just to
11563 find out that you're not interested in reading any of them. It's better
11564 to be somewhat more conservative in choosing what to download, and then
11565 mark the articles for downloading manually if it should turn out that
11566 you're interested in the articles anyway.
11568 The main way to control what is to be downloaded is to create a
11569 @dfn{category} and then assign some (or all) groups to this category.
11570 Gnus has its own buffer for creating and managing categories.
11573 * Category Syntax:: What a category looks like.
11574 * The Category Buffer:: A buffer for maintaining categories.
11575 * Category Variables:: Customize'r'Us.
11579 @node Category Syntax
11580 @subsubsection Category Syntax
11582 A category consists of two things.
11586 A predicate which (generally) gives a rough outline of which articles
11587 are eligible for downloading; and
11590 a score rule which (generally) gives you a finer granularity when
11591 deciding what articles to download. (Note that this @dfn{download
11592 score} is not necessarily related to normal scores.)
11595 A predicate in its simplest form can be a single predicate such as
11596 @code{true} or @code{false}. These two will download every available
11597 article or nothing respectively. In the case of these two special
11598 predicates an additional score rule is superfluous.
11600 Predicates of @code{high} or @code{low} download articles in respect of
11601 their scores in relationship to @code{gnus-agent-high-score} and
11602 @code{gnus-agent-low-score} as descibed below.
11604 To gain even finer control of what is to be regarded eligible for
11605 download a predicate can consist of a number of predicates with logical
11606 operators sprinkled in between.
11608 Perhaps some examples are in order.
11610 Here's a simple predicate. (It's the default predicate, in fact, used
11611 for all groups that don't belong to any other category.)
11617 Quite simple, eh? This predicate is true if and only if the article is
11618 short (for some value of ``short'').
11620 Here's a more complex predicate:
11629 This means that an article should be downloaded if it has a high score,
11630 or if the score is not low and the article is not long. You get the
11633 The available logical operators are @code{or}, @code{and} and
11634 @code{not}. (If you prefer, you can use the more ``C''-ish operators
11635 @samp{|}, @code{&} and @code{!} instead.)
11637 The following predicates are pre-defined, but if none of these fit what
11638 you want to do, you can write your own.
11642 True iff the article is shorter than @code{gnus-agent-short-article}
11643 lines; default 100.
11646 True iff the article is longer than @code{gnus-agent-long-article}
11647 lines; default 200.
11650 True iff the article has a download score less than
11651 @code{gnus-agent-low-score}; default 0.
11654 True iff the article has a download score greater than
11655 @code{gnus-agent-high-score}; default 0.
11658 True iff the Gnus Agent guesses that the article is spam. The
11659 heuristics may change over time, but at present it just computes a
11660 checksum and sees whether articles match.
11669 If you want to create your own predicate function, here's what you have
11670 to know: The functions are called with no parameters, but the
11671 @code{gnus-headers} and @code{gnus-score} dynamic variables are bound to
11674 For example, you could decide that you don't want to download articles
11675 that were posted more than a certain number of days ago (e.g. posted
11676 more than @code{gnus-agent-expire-days} ago) you might write a function
11677 something along the lines of the following:
11680 (defun my-article-old-p ()
11681 "Say whether an article is old."
11682 (< (time-to-day (date-to-time (mail-header-date gnus-headers)))
11683 (- (time-to-day (current-time)) gnus-agent-expire-days)))
11686 with the predicate then defined as:
11689 (not my-article-old-p)
11692 or you could append your predicate to the predefined
11693 @code{gnus-category-predicate-alist} in your @file{~/.gnus.el} or
11694 wherever. (Note: this would have to be at a point *after*
11695 @code{gnus-agent} has been loaded via @code{(gnus-agentize)})
11698 (defvar gnus-category-predicate-alist
11699 (append gnus-category-predicate-alist
11700 '((old . my-article-old-p))))
11703 and simply specify your predicate as:
11709 If/when using something like the above, be aware that there are many
11710 misconfigured systems/mailers out there and so an article's date is not
11711 always a reliable indication of when it was posted. Hell, some people
11712 just don't give a damm.
11715 The above predicates apply to *all* the groups which belong to the
11716 category. However, if you wish to have a specific predicate for an
11717 individual group within a category, or you're just too lazy to set up a
11718 new category, you can enter a group's individual predicate in it's group
11719 parameters like so:
11722 (agent-predicate . short)
11725 This is the group parameter equivalent of the agent category
11726 default. Note that when specifying a single word predicate like this,
11727 the @code{agent-predicate} specification must be in dotted pair
11730 The equivalent of the longer example from above would be:
11733 (agent-predicate or high (and (not low) (not long)))
11736 The outer parenthesis required in the category specification are not
11737 entered here as, not being in dotted pair notation, the value of the
11738 predicate is assumed to be a list.
11741 Now, the syntax of the download score is the same as the syntax of
11742 normal score files, except that all elements that require actually
11743 seeing the article itself are verboten. This means that only the
11744 following headers can be scored on: @code{Subject}, @code{From},
11745 @code{Date}, @code{Message-ID}, @code{References}, @code{Chars},
11746 @code{Lines}, and @code{Xref}.
11748 As with predicates, the specification of the @code{download score rule}
11749 to use in respect of a group can be in either the category definition if
11750 it's to be applicable to all groups in therein, or a group's parameters
11751 if it's to be specific to that group.
11753 In both of these places the @code{download score rule} can take one of
11761 This has the same syntax as a normal gnus score file except only a
11762 subset of scoring keywords are available as mentioned above.
11768 Category specification
11772 ("Lars Ingebrigtsen" 1000000 nil s))
11778 Group Parameter specification
11781 (agent-score ("from"
11782 ("Lars Ingebrigtsen" 1000000 nil s))
11787 Again, note the omission of the outermost parenthesis here.
11793 These score files must *only* contain the permitted scoring keywords
11800 Category specification
11803 ("~/News/agent.SCORE")
11809 ("~/News/agent.SCORE" "~/News/agent.group.SCORE")
11813 Group Parameter specification
11816 (agent-score "~/News/agent.SCORE")
11819 Additional score files can be specified as above. Need I say anything
11824 Use @code{normal} score files
11826 If you dont want to maintain two sets of scoring rules for a group, and
11827 your desired @code{downloading} criteria for a group are the same as your
11828 @code{reading} criteria then you can tell the agent to refer to your
11829 @code{normal} score files when deciding what to download.
11831 These directives in either the category definition or a group's
11832 parameters will cause the agent to read in all the applicable score
11833 files for a group, *filtering out* those those sections that do not
11834 relate to one of the permitted subset of scoring keywords.
11838 Category Specification
11845 Group Parameter specification
11848 (agent-score . file)
11854 @node The Category Buffer
11855 @subsubsection The Category Buffer
11857 You'd normally do all category maintenance from the category buffer.
11858 When you enter it for the first time (with the @kbd{J c} command from
11859 the group buffer), you'll only see the @code{default} category.
11861 The following commands are available in this buffer:
11865 @kindex q (Category)
11866 @findex gnus-category-exit
11867 Return to the group buffer (@code{gnus-category-exit}).
11870 @kindex k (Category)
11871 @findex gnus-category-kill
11872 Kill the current category (@code{gnus-category-kill}).
11875 @kindex c (Category)
11876 @findex gnus-category-copy
11877 Copy the current category (@code{gnus-category-copy}).
11880 @kindex a (Category)
11881 @findex gnus-category-add
11882 Add a new category (@code{gnus-category-add}).
11885 @kindex p (Category)
11886 @findex gnus-category-edit-predicate
11887 Edit the predicate of the current category
11888 (@code{gnus-category-edit-predicate}).
11891 @kindex g (Category)
11892 @findex gnus-category-edit-groups
11893 Edit the list of groups belonging to the current category
11894 (@code{gnus-category-edit-groups}).
11897 @kindex s (Category)
11898 @findex gnus-category-edit-score
11899 Edit the download score rule of the current category
11900 (@code{gnus-category-edit-score}).
11903 @kindex l (Category)
11904 @findex gnus-category-list
11905 List all the categories (@code{gnus-category-list}).
11909 @node Category Variables
11910 @subsubsection Category Variables
11913 @item gnus-category-mode-hook
11914 @vindex gnus-category-mode-hook
11915 Hook run in category buffers.
11917 @item gnus-category-line-format
11918 @vindex gnus-category-line-format
11919 Format of the lines in the category buffer (@pxref{Formatting
11920 Variables}). Valid elements are:
11924 The name of the category.
11927 The number of groups in the category.
11930 @item gnus-category-mode-line-format
11931 @vindex gnus-category-mode-line-format
11932 Format of the category mode line (@pxref{Mode Line Formatting}).
11934 @item gnus-agent-short-article
11935 @vindex gnus-agent-short-article
11936 Articles that have fewer lines than this are short. Default 100.
11938 @item gnus-agent-long-article
11939 @vindex gnus-agent-long-article
11940 Articles that have more lines than this are long. Default 200.
11942 @item gnus-agent-low-score
11943 @vindex gnus-agent-low-score
11944 Articles that have a score lower than this have a low score. Default
11947 @item gnus-agent-high-score
11948 @vindex gnus-agent-high-score
11949 Articles that have a score higher than this have a high score. Default
11955 @node Agent Commands
11956 @subsection Agent Commands
11958 All the Gnus Agent commands are on the @kbd{J} submap. The @kbd{J j}
11959 (@code{gnus-agent-toggle-plugged} command works in all modes, and
11960 toggles the plugged/unplugged state of the Gnus Agent.
11964 * Group Agent Commands::
11965 * Summary Agent Commands::
11966 * Server Agent Commands::
11969 You can run a complete batch fetch from the command line with the
11970 following incantation:
11972 @cindex gnus-agent-batch-fetch
11974 $ emacs -batch -l ~/.gnus.el -f gnus-agent-batch-fetch
11979 @node Group Agent Commands
11980 @subsubsection Group Agent Commands
11984 @kindex J u (Agent Group)
11985 @findex gnus-agent-fetch-groups
11986 Fetch all eligible articles in the current group
11987 (@code{gnus-agent-fetch-groups}).
11990 @kindex J c (Agent Group)
11991 @findex gnus-enter-category-buffer
11992 Enter the Agent category buffer (@code{gnus-enter-category-buffer}).
11995 @kindex J s (Agent Group)
11996 @findex gnus-agent-fetch-session
11997 Fetch all eligible articles in all groups
11998 (@code{gnus-agent-fetch-session}).
12001 @kindex J S (Agent Group)
12002 @findex gnus-group-send-drafts
12003 Send all sendable messages in the draft group
12004 (@code{gnus-agent-fetch-session}). @xref{Drafts}
12007 @kindex J a (Agent Group)
12008 @findex gnus-agent-add-group
12009 Add the current group to an Agent category
12010 (@code{gnus-agent-add-group}).
12015 @node Summary Agent Commands
12016 @subsubsection Summary Agent Commands
12020 @kindex J # (Agent Summary)
12021 @findex gnus-agent-mark-article
12022 Mark the article for downloading (@code{gnus-agent-mark-article}).
12025 @kindex J M-# (Agent Summary)
12026 @findex gnus-agent-unmark-article
12027 Remove the downloading mark from the article
12028 (@code{gnus-agent-unmark-article}).
12031 @kindex @@ (Agent Summary)
12032 @findex gnus-agent-toggle-mark
12033 Toggle whether to download the article (@code{gnus-agent-toggle-mark}).
12036 @kindex J c (Agent Summary)
12037 @findex gnus-agent-catchup
12038 Mark all undownloaded articles as read (@code{gnus-agent-catchup}).
12043 @node Server Agent Commands
12044 @subsubsection Server Agent Commands
12048 @kindex J a (Agent Server)
12049 @findex gnus-agent-add-server
12050 Add the current server to the list of servers covered by the Gnus Agent
12051 (@code{gnus-agent-add-server}).
12054 @kindex J r (Agent Server)
12055 @findex gnus-agent-remove-server
12056 Remove the current server from the list of servers covered by the Gnus
12057 Agent (@code{gnus-agent-remove-server}).
12063 @subsection Agent Expiry
12065 @vindex gnus-agent-expire-days
12066 @findex gnus-agent-expire
12067 @kindex M-x gnus-agent-expire
12068 @cindex Agent expiry
12069 @cindex Gnus Agent expiry
12072 @code{nnagent} doesn't handle expiry. Instead, there's a special
12073 @code{gnus-agent-expire} command that will expire all read articles that
12074 are older than @code{gnus-agent-expire-days} days. It can be run
12075 whenever you feel that you're running out of space. It's not
12076 particularly fast or efficient, and it's not a particularly good idea to
12077 interrupt it (with @kbd{C-g} or anything else) once you've started it.
12079 @vindex gnus-agent-expire-all
12080 if @code{gnus-agent-expire-all} is non-@code{nil}, this command will
12081 expire all articles---unread, read, ticked and dormant. If @code{nil}
12082 (which is the default), only read articles are eligible for expiry, and
12083 unread, ticked and dormant articles will be kept indefinitely.
12086 @node Outgoing Messages
12087 @subsection Outgoing Messages
12089 When Gnus is unplugged, all outgoing messages (both mail and news) are
12090 stored in the draft groups (@pxref{Drafts}). You can view them there
12091 after posting, and edit them at will.
12093 When Gnus is plugged again, you can send the messages either from the
12094 draft group with the special commands available there, or you can use
12095 the @kbd{J S} command in the group buffer to send all the sendable
12096 messages in the draft group.
12100 @node Agent Variables
12101 @subsection Agent Variables
12104 @item gnus-agent-directory
12105 @vindex gnus-agent-directory
12106 Where the Gnus Agent will store its files. The default is
12107 @file{~/News/agent/}.
12109 @item gnus-agent-handle-level
12110 @vindex gnus-agent-handle-level
12111 Groups on levels (@pxref{Group Levels}) higher than this variable will
12112 be ignored by the Agent. The default is @code{gnus-level-subscribed},
12113 which means that only subscribed group will be considered by the Agent
12116 @item gnus-agent-plugged-hook
12117 @vindex gnus-agent-plugged-hook
12118 Hook run when connecting to the network.
12120 @item gnus-agent-unplugged-hook
12121 @vindex gnus-agent-unplugged-hook
12122 Hook run when disconnecting from the network.
12127 @node Example Setup
12128 @subsection Example Setup
12130 If you don't want to read this manual, and you have a fairly standard
12131 setup, you may be able to use something like the following as your
12132 @file{.gnus.el} file to get started.
12135 ;;; Define how Gnus is to fetch news. We do this over NNTP
12136 ;;; from your ISP's server.
12137 (setq gnus-select-method '(nntp "nntp.your-isp.com"))
12139 ;;; Define how Gnus is to read your mail. We read mail from
12140 ;;; your ISP's POP server.
12141 (setenv "MAILHOST" "pop.your-isp.com")
12142 (setq nnmail-spool-file "po:username")
12144 ;;; Say how Gnus is to store the mail. We use nnml groups.
12145 (setq gnus-secondary-select-methods '((nnml "")))
12147 ;;; Make Gnus into an offline newsreader.
12151 That should be it, basically. Put that in your @file{~/.gnus.el} file,
12152 edit to suit your needs, start up PPP (or whatever), and type @kbd{M-x
12155 If this is the first time you've run Gnus, you will be subscribed
12156 automatically to a few default newsgroups. You'll probably want to
12157 subscribe to more groups, and to do that, you have to query the
12158 @sc{nntp} server for a complete list of groups with the @kbd{A A}
12159 command. This usually takes quite a while, but you only have to do it
12162 After reading and parsing a while, you'll be presented with a list of
12163 groups. Subscribe to the ones you want to read with the @kbd{u}
12164 command. @kbd{l} to make all the killed groups disappear after you've
12165 subscribe to all the groups you want to read. (@kbd{A k} will bring
12166 back all the killed groups.)
12168 You can now read the groups at once, or you can download the articles
12169 with the @kbd{J s} command. And then read the rest of this manual to
12170 find out which of the other gazillion things you want to customize.
12173 @node Batching Agents
12174 @subsection Batching Agents
12176 Having the Gnus Agent fetch articles (and post whatever messages you've
12177 written) is quite easy once you've gotten things set up properly. The
12178 following shell script will do everything that is necessary:
12182 emacs -batch -l ~/.emacs -f gnus-agent-batch >/dev/null
12191 Other people use @dfn{kill files}, but we here at Gnus Towers like
12192 scoring better than killing, so we'd rather switch than fight. They do
12193 something completely different as well, so sit up straight and pay
12196 @vindex gnus-summary-mark-below
12197 All articles have a default score (@code{gnus-summary-default-score}),
12198 which is 0 by default. This score may be raised or lowered either
12199 interactively or by score files. Articles that have a score lower than
12200 @code{gnus-summary-mark-below} are marked as read.
12202 Gnus will read any @dfn{score files} that apply to the current group
12203 before generating the summary buffer.
12205 There are several commands in the summary buffer that insert score
12206 entries based on the current article. You can, for instance, ask Gnus to
12207 lower or increase the score of all articles with a certain subject.
12209 There are two sorts of scoring entries: Permanent and temporary.
12210 Temporary score entries are self-expiring entries. Any entries that are
12211 temporary and have not been used for, say, a week, will be removed
12212 silently to help keep the sizes of the score files down.
12215 * Summary Score Commands:: Adding score entries for the current group.
12216 * Group Score Commands:: General score commands.
12217 * Score Variables:: Customize your scoring. (My, what terminology).
12218 * Score File Format:: What a score file may contain.
12219 * Score File Editing:: You can edit score files by hand as well.
12220 * Adaptive Scoring:: Big Sister Gnus knows what you read.
12221 * Home Score File:: How to say where new score entries are to go.
12222 * Followups To Yourself:: Having Gnus notice when people answer you.
12223 * Scoring Tips:: How to score effectively.
12224 * Reverse Scoring:: That problem child of old is not problem.
12225 * Global Score Files:: Earth-spanning, ear-splitting score files.
12226 * Kill Files:: They are still here, but they can be ignored.
12227 * Converting Kill Files:: Translating kill files to score files.
12228 * GroupLens:: Getting predictions on what you like to read.
12229 * Advanced Scoring:: Using logical expressions to build score rules.
12230 * Score Decays:: It can be useful to let scores wither away.
12234 @node Summary Score Commands
12235 @section Summary Score Commands
12236 @cindex score commands
12238 The score commands that alter score entries do not actually modify real
12239 score files. That would be too inefficient. Gnus maintains a cache of
12240 previously loaded score files, one of which is considered the
12241 @dfn{current score file alist}. The score commands simply insert
12242 entries into this list, and upon group exit, this list is saved.
12244 The current score file is by default the group's local score file, even
12245 if no such score file actually exists. To insert score commands into
12246 some other score file (e.g. @file{all.SCORE}), you must first make this
12247 score file the current one.
12249 General score commands that don't actually change the score file:
12254 @kindex V s (Summary)
12255 @findex gnus-summary-set-score
12256 Set the score of the current article (@code{gnus-summary-set-score}).
12259 @kindex V S (Summary)
12260 @findex gnus-summary-current-score
12261 Display the score of the current article
12262 (@code{gnus-summary-current-score}).
12265 @kindex V t (Summary)
12266 @findex gnus-score-find-trace
12267 Display all score rules that have been used on the current article
12268 (@code{gnus-score-find-trace}).
12271 @kindex V R (Summary)
12272 @findex gnus-summary-rescore
12273 Run the current summary through the scoring process
12274 (@code{gnus-summary-rescore}). This might be useful if you're playing
12275 around with your score files behind Gnus' back and want to see the
12276 effect you're having.
12279 @kindex V c (Summary)
12280 @findex gnus-score-change-score-file
12281 Make a different score file the current
12282 (@code{gnus-score-change-score-file}).
12285 @kindex V e (Summary)
12286 @findex gnus-score-edit-current-scores
12287 Edit the current score file (@code{gnus-score-edit-current-scores}).
12288 You will be popped into a @code{gnus-score-mode} buffer (@pxref{Score
12292 @kindex V f (Summary)
12293 @findex gnus-score-edit-file
12294 Edit a score file and make this score file the current one
12295 (@code{gnus-score-edit-file}).
12298 @kindex V F (Summary)
12299 @findex gnus-score-flush-cache
12300 Flush the score cache (@code{gnus-score-flush-cache}). This is useful
12301 after editing score files.
12304 @kindex V C (Summary)
12305 @findex gnus-score-customize
12306 Customize a score file in a visually pleasing manner
12307 (@code{gnus-score-customize}).
12311 The rest of these commands modify the local score file.
12316 @kindex V m (Summary)
12317 @findex gnus-score-set-mark-below
12318 Prompt for a score, and mark all articles with a score below this as
12319 read (@code{gnus-score-set-mark-below}).
12322 @kindex V x (Summary)
12323 @findex gnus-score-set-expunge-below
12324 Prompt for a score, and add a score rule to the current score file to
12325 expunge all articles below this score
12326 (@code{gnus-score-set-expunge-below}).
12329 The keystrokes for actually making score entries follow a very regular
12330 pattern, so there's no need to list all the commands. (Hundreds of
12333 @findex gnus-summary-increase-score
12334 @findex gnus-summary-lower-score
12338 The first key is either @kbd{I} (upper case i) for increasing the score
12339 or @kbd{L} for lowering the score.
12341 The second key says what header you want to score on. The following
12342 keys are available:
12346 Score on the author name.
12349 Score on the subject line.
12352 Score on the Xref line---i.e., the cross-posting line.
12355 Score on the References line.
12361 Score on the number of lines.
12364 Score on the Message-ID.
12367 Score on followups.
12381 The third key is the match type. Which match types are valid depends on
12382 what headers you are scoring on.
12394 Substring matching.
12397 Fuzzy matching (@pxref{Fuzzy Matching}).
12426 Greater than number.
12431 The fourth and final key says whether this is a temporary (i.e., expiring)
12432 score entry, or a permanent (i.e., non-expiring) score entry, or whether
12433 it is to be done immediately, without adding to the score file.
12437 Temporary score entry.
12440 Permanent score entry.
12443 Immediately scoring.
12448 So, let's say you want to increase the score on the current author with
12449 exact matching permanently: @kbd{I a e p}. If you want to lower the
12450 score based on the subject line, using substring matching, and make a
12451 temporary score entry: @kbd{L s s t}. Pretty easy.
12453 To make things a bit more complicated, there are shortcuts. If you use
12454 a capital letter on either the second or third keys, Gnus will use
12455 defaults for the remaining one or two keystrokes. The defaults are
12456 ``substring'' and ``temporary''. So @kbd{I A} is the same as @kbd{I a s
12457 t}, and @kbd{I a R} is the same as @kbd{I a r t}.
12459 These functions take both the numerical prefix and the symbolic prefix
12460 (@pxref{Symbolic Prefixes}). A numerical prefix says how much to lower
12461 (or increase) the score of the article. A symbolic prefix of @code{a}
12462 says to use the @file{all.SCORE} file for the command instead of the
12463 current score file.
12465 @vindex gnus-score-mimic-keymap
12466 The @code{gnus-score-mimic-keymap} says whether these commands will
12467 pretend they are keymaps or not.
12470 @node Group Score Commands
12471 @section Group Score Commands
12472 @cindex group score commands
12474 There aren't many of these as yet, I'm afraid.
12479 @kindex W f (Group)
12480 @findex gnus-score-flush-cache
12481 Gnus maintains a cache of score alists to avoid having to reload them
12482 all the time. This command will flush the cache
12483 (@code{gnus-score-flush-cache}).
12487 You can do scoring from the command line by saying something like:
12489 @findex gnus-batch-score
12490 @cindex batch scoring
12492 $ emacs -batch -l ~/.emacs -l ~/.gnus.el -f gnus-batch-score
12496 @node Score Variables
12497 @section Score Variables
12498 @cindex score variables
12502 @item gnus-use-scoring
12503 @vindex gnus-use-scoring
12504 If @code{nil}, Gnus will not check for score files, and will not, in
12505 general, do any score-related work. This is @code{t} by default.
12507 @item gnus-kill-killed
12508 @vindex gnus-kill-killed
12509 If this variable is @code{nil}, Gnus will never apply score files to
12510 articles that have already been through the kill process. While this
12511 may save you lots of time, it also means that if you apply a kill file
12512 to a group, and then change the kill file and want to run it over you
12513 group again to kill more articles, it won't work. You have to set this
12514 variable to @code{t} to do that. (It is @code{t} by default.)
12516 @item gnus-kill-files-directory
12517 @vindex gnus-kill-files-directory
12518 All kill and score files will be stored in this directory, which is
12519 initialized from the @code{SAVEDIR} environment variable by default.
12520 This is @file{~/News/} by default.
12522 @item gnus-score-file-suffix
12523 @vindex gnus-score-file-suffix
12524 Suffix to add to the group name to arrive at the score file name
12525 (@samp{SCORE} by default.)
12527 @item gnus-score-uncacheable-files
12528 @vindex gnus-score-uncacheable-files
12529 @cindex score cache
12530 All score files are normally cached to avoid excessive re-loading of
12531 score files. However, if this might make you Emacs grow big and
12532 bloated, so this regexp can be used to weed out score files unlikely to be needed again. It would be a bad idea to deny caching of
12533 @file{all.SCORE}, while it might be a good idea to not cache
12534 @file{comp.infosystems.www.authoring.misc.ADAPT}. In fact, this
12535 variable is @samp{ADAPT$} by default, so no adaptive score files will
12538 @item gnus-save-score
12539 @vindex gnus-save-score
12540 If you have really complicated score files, and do lots of batch
12541 scoring, then you might set this variable to @code{t}. This will make
12542 Gnus save the scores into the @file{.newsrc.eld} file.
12544 @item gnus-score-interactive-default-score
12545 @vindex gnus-score-interactive-default-score
12546 Score used by all the interactive raise/lower commands to raise/lower
12547 score with. Default is 1000, which may seem excessive, but this is to
12548 ensure that the adaptive scoring scheme gets enough room to play with.
12549 We don't want the small changes from the adaptive scoring to overwrite
12550 manually entered data.
12552 @item gnus-summary-default-score
12553 @vindex gnus-summary-default-score
12554 Default score of an article, which is 0 by default.
12556 @item gnus-summary-expunge-below
12557 @vindex gnus-summary-expunge-below
12558 Don't display the summary lines of articles that have scores lower than
12559 this variable. This is @code{nil} by default, which means that no
12560 articles will be hidden. This variable is local to the summary buffers,
12561 and has to be set from @code{gnus-summary-mode-hook}.
12563 @item gnus-score-over-mark
12564 @vindex gnus-score-over-mark
12565 Mark (in the third column) used for articles with a score over the
12566 default. Default is @samp{+}.
12568 @item gnus-score-below-mark
12569 @vindex gnus-score-below-mark
12570 Mark (in the third column) used for articles with a score below the
12571 default. Default is @samp{-}.
12573 @item gnus-score-find-score-files-function
12574 @vindex gnus-score-find-score-files-function
12575 Function used to find score files for the current group. This function
12576 is called with the name of the group as the argument.
12578 Predefined functions available are:
12581 @item gnus-score-find-single
12582 @findex gnus-score-find-single
12583 Only apply the group's own score file.
12585 @item gnus-score-find-bnews
12586 @findex gnus-score-find-bnews
12587 Apply all score files that match, using bnews syntax. This is the
12588 default. If the current group is @samp{gnu.emacs.gnus}, for instance,
12589 @file{all.emacs.all.SCORE}, @file{not.alt.all.SCORE} and
12590 @file{gnu.all.SCORE} would all apply. In short, the instances of
12591 @samp{all} in the score file names are translated into @samp{.*}, and
12592 then a regexp match is done.
12594 This means that if you have some score entries that you want to apply to
12595 all groups, then you put those entries in the @file{all.SCORE} file.
12597 The score files are applied in a semi-random order, although Gnus will
12598 try to apply the more general score files before the more specific score
12599 files. It does this by looking at the number of elements in the score
12600 file names---discarding the @samp{all} elements.
12602 @item gnus-score-find-hierarchical
12603 @findex gnus-score-find-hierarchical
12604 Apply all score files from all the parent groups. This means that you
12605 can't have score files like @file{all.SCORE}, but you can have
12606 @file{SCORE}, @file{comp.SCORE} and @file{comp.emacs.SCORE}.
12609 This variable can also be a list of functions. In that case, all these
12610 functions will be called, and all the returned lists of score files will
12611 be applied. These functions can also return lists of score alists
12612 directly. In that case, the functions that return these non-file score
12613 alists should probably be placed before the ``real'' score file
12614 functions, to ensure that the last score file returned is the local
12617 @item gnus-score-expiry-days
12618 @vindex gnus-score-expiry-days
12619 This variable says how many days should pass before an unused score file
12620 entry is expired. If this variable is @code{nil}, no score file entries
12621 are expired. It's 7 by default.
12623 @item gnus-update-score-entry-dates
12624 @vindex gnus-update-score-entry-dates
12625 If this variable is non-@code{nil}, matching score entries will have
12626 their dates updated. (This is how Gnus controls expiry---all
12627 non-matching entries will become too old while matching entries will
12628 stay fresh and young.) However, if you set this variable to @code{nil},
12629 even matching entries will grow old and will have to face that oh-so
12632 @item gnus-score-after-write-file-function
12633 @vindex gnus-score-after-write-file-function
12634 Function called with the name of the score file just written.
12636 @item gnus-score-thread-simplify
12637 @vindex gnus-score-thread-simplify
12638 If this variable is non-@code{nil}, article subjects will be simplified
12639 for subject scoring purposes in the same manner as with
12640 threading---according to the current value of
12641 gnus-simplify-subject-functions. If the scoring entry uses
12642 @code{substring} or @code{exact} matching, the match will also be
12643 simplified in this manner.
12648 @node Score File Format
12649 @section Score File Format
12650 @cindex score file format
12652 A score file is an @code{emacs-lisp} file that normally contains just a
12653 single form. Casual users are not expected to edit these files;
12654 everything can be changed from the summary buffer.
12656 Anyway, if you'd like to dig into it yourself, here's an example:
12660 ("Lars Ingebrigtsen" -10000)
12662 ("larsi\\|lmi" -50000 nil R))
12664 ("Ding is Badd" nil 728373))
12666 ("alt.politics" -1000 728372 s))
12671 (mark-and-expunge -10)
12675 (files "/hom/larsi/News/gnu.SCORE")
12676 (exclude-files "all.SCORE")
12677 (local (gnus-newsgroup-auto-expire t)
12678 (gnus-summary-make-false-root empty))
12682 This example demonstrates most score file elements. For a different
12683 approach, see @pxref{Advanced Scoring}.
12685 Even though this looks much like lisp code, nothing here is actually
12686 @code{eval}ed. The lisp reader is used to read this form, though, so it
12687 has to be valid syntactically, if not semantically.
12689 Six keys are supported by this alist:
12694 If the key is a string, it is the name of the header to perform the
12695 match on. Scoring can only be performed on these eight headers:
12696 @code{From}, @code{Subject}, @code{References}, @code{Message-ID},
12697 @code{Xref}, @code{Lines}, @code{Chars} and @code{Date}. In addition to
12698 these headers, there are three strings to tell Gnus to fetch the entire
12699 article and do the match on larger parts of the article: @code{Body}
12700 will perform the match on the body of the article, @code{Head} will
12701 perform the match on the head of the article, and @code{All} will
12702 perform the match on the entire article. Note that using any of these
12703 last three keys will slow down group entry @emph{considerably}. The
12704 final ``header'' you can score on is @code{Followup}. These score
12705 entries will result in new score entries being added for all follow-ups
12706 to articles that matches these score entries.
12708 Following this key is a arbitrary number of score entries, where each
12709 score entry has one to four elements.
12713 The first element is the @dfn{match element}. On most headers this will
12714 be a string, but on the Lines and Chars headers, this must be an
12718 If the second element is present, it should be a number---the @dfn{score
12719 element}. This number should be an integer in the neginf to posinf
12720 interval. This number is added to the score of the article if the match
12721 is successful. If this element is not present, the
12722 @code{gnus-score-interactive-default-score} number will be used
12723 instead. This is 1000 by default.
12726 If the third element is present, it should be a number---the @dfn{date
12727 element}. This date says when the last time this score entry matched,
12728 which provides a mechanism for expiring the score entries. It this
12729 element is not present, the score entry is permanent. The date is
12730 represented by the number of days since December 31, 1 BCE.
12733 If the fourth element is present, it should be a symbol---the @dfn{type
12734 element}. This element specifies what function should be used to see
12735 whether this score entry matches the article. What match types that can
12736 be used depends on what header you wish to perform the match on.
12739 @item From, Subject, References, Xref, Message-ID
12740 For most header types, there are the @code{r} and @code{R} (regexp), as
12741 well as @code{s} and @code{S} (substring) types, and @code{e} and
12742 @code{E} (exact match), and @code{w} (word match) types. If this
12743 element is not present, Gnus will assume that substring matching should
12744 be used. @code{R}, @code{S}, and @code{E} differ from the others in
12745 that the matches will be done in a case-sensitive manner. All these
12746 one-letter types are really just abbreviations for the @code{regexp},
12747 @code{string}, @code{exact}, and @code{word} types, which you can use
12748 instead, if you feel like.
12751 These two headers use different match types: @code{<}, @code{>},
12752 @code{=}, @code{>=} and @code{<=}.
12754 These predicates are true if
12757 (PREDICATE HEADER MATCH)
12760 evaluates to non-@code{nil}. For instance, the advanced match
12761 @code{("lines" 4 <)} (@pxref{Advanced Scoring}) will result in the
12768 Or to put it another way: When using @code{<} on @code{Lines} with 4 as
12769 the match, we get the score added if the article has less than 4 lines.
12770 (It's easy to get confused and think it's the other way around. But
12771 it's not. I think.)
12773 When matching on @code{Lines}, be careful because some backends (like
12774 @code{nndir}) do not generate @code{Lines} header, so every article ends
12775 up being marked as having 0 lines. This can lead to strange results if
12776 you happen to lower score of the articles with few lines.
12779 For the Date header we have three kinda silly match types:
12780 @code{before}, @code{at} and @code{after}. I can't really imagine this
12781 ever being useful, but, like, it would feel kinda silly not to provide
12782 this function. Just in case. You never know. Better safe than sorry.
12783 Once burnt, twice shy. Don't judge a book by its cover. Never not have
12784 sex on a first date. (I have been told that at least one person, and I
12785 quote, ``found this function indispensable'', however.)
12789 A more useful match type is @code{regexp}. With it, you can match the
12790 date string using a regular expression. The date is normalized to
12791 ISO8601 compact format first---@var{YYYYMMDD}@code{T}@var{HHMMSS}. If
12792 you want to match all articles that have been posted on April 1st in
12793 every year, you could use @samp{....0401.........} as a match string,
12794 for instance. (Note that the date is kept in its original time zone, so
12795 this will match articles that were posted when it was April 1st where
12796 the article was posted from. Time zones are such wholesome fun for the
12799 @item Head, Body, All
12800 These three match keys use the same match types as the @code{From} (etc)
12804 This match key is somewhat special, in that it will match the
12805 @code{From} header, and affect the score of not only the matching
12806 articles, but also all followups to the matching articles. This allows
12807 you e.g. increase the score of followups to your own articles, or
12808 decrease the score of followups to the articles of some known
12809 trouble-maker. Uses the same match types as the @code{From} header
12810 uses. (Using this match key will lead to creation of @file{ADAPT}
12814 This match key works along the same lines as the @code{Followup} match
12815 key. If you say that you want to score on a (sub-)thread started by an article with a @code{Message-ID} @var{X}, then you add a
12816 @samp{thread} match. This will add a new @samp{thread} match for each
12817 article that has @var{X} in its @code{References} header. (These new
12818 @samp{thread} matches will use the @code{Message-ID}s of these matching
12819 articles.) This will ensure that you can raise/lower the score of an
12820 entire thread, even though some articles in the thread may not have
12821 complete @code{References} headers. Note that using this may lead to
12822 undeterministic scores of the articles in the thread. (Using this match
12823 key will lead to creation of @file{ADAPT} files.)
12827 @cindex Score File Atoms
12829 The value of this entry should be a number. Any articles with a score
12830 lower than this number will be marked as read.
12833 The value of this entry should be a number. Any articles with a score
12834 lower than this number will be removed from the summary buffer.
12836 @item mark-and-expunge
12837 The value of this entry should be a number. Any articles with a score
12838 lower than this number will be marked as read and removed from the
12841 @item thread-mark-and-expunge
12842 The value of this entry should be a number. All articles that belong to
12843 a thread that has a total score below this number will be marked as read
12844 and removed from the summary buffer. @code{gnus-thread-score-function}
12845 says how to compute the total score for a thread.
12848 The value of this entry should be any number of file names. These files
12849 are assumed to be score files as well, and will be loaded the same way
12852 @item exclude-files
12853 The clue of this entry should be any number of files. These files will
12854 not be loaded, even though they would normally be so, for some reason or
12858 The value of this entry will be @code{eval}el. This element will be
12859 ignored when handling global score files.
12862 Read-only score files will not be updated or saved. Global score files
12863 should feature this atom (@pxref{Global Score Files}). (Note:
12864 @dfn{Global} here really means @dfn{global}; not your personal
12865 apply-to-all-groups score files.)
12868 The value of this entry should be a number. Articles that do not have
12869 parents will get this number added to their scores. Imagine you follow
12870 some high-volume newsgroup, like @samp{comp.lang.c}. Most likely you
12871 will only follow a few of the threads, also want to see any new threads.
12873 You can do this with the following two score file entries:
12877 (mark-and-expunge -100)
12880 When you enter the group the first time, you will only see the new
12881 threads. You then raise the score of the threads that you find
12882 interesting (with @kbd{I T} or @kbd{I S}), and ignore (@kbd{C y}) the
12883 rest. Next time you enter the group, you will see new articles in the
12884 interesting threads, plus any new threads.
12886 I.e.---the orphan score atom is for high-volume groups where there
12887 exist a few interesting threads which can't be found automatically by
12888 ordinary scoring rules.
12891 This entry controls the adaptive scoring. If it is @code{t}, the
12892 default adaptive scoring rules will be used. If it is @code{ignore}, no
12893 adaptive scoring will be performed on this group. If it is a list, this
12894 list will be used as the adaptive scoring rules. If it isn't present,
12895 or is something other than @code{t} or @code{ignore}, the default
12896 adaptive scoring rules will be used. If you want to use adaptive
12897 scoring on most groups, you'd set @code{gnus-use-adaptive-scoring} to
12898 @code{t}, and insert an @code{(adapt ignore)} in the groups where you do
12899 not want adaptive scoring. If you only want adaptive scoring in a few
12900 groups, you'd set @code{gnus-use-adaptive-scoring} to @code{nil}, and
12901 insert @code{(adapt t)} in the score files of the groups where you want
12905 All adaptive score entries will go to the file named by this entry. It
12906 will also be applied when entering the group. This atom might be handy
12907 if you want to adapt on several groups at once, using the same adaptive
12908 file for a number of groups.
12911 @cindex local variables
12912 The value of this entry should be a list of @code{(VAR VALUE)} pairs.
12913 Each @var{var} will be made buffer-local to the current summary buffer,
12914 and set to the value specified. This is a convenient, if somewhat
12915 strange, way of setting variables in some groups if you don't like hooks
12916 much. Note that the @var{value} won't be evaluated.
12920 @node Score File Editing
12921 @section Score File Editing
12923 You normally enter all scoring commands from the summary buffer, but you
12924 might feel the urge to edit them by hand as well, so we've supplied you
12925 with a mode for that.
12927 It's simply a slightly customized @code{emacs-lisp} mode, with these
12928 additional commands:
12933 @kindex C-c C-c (Score)
12934 @findex gnus-score-edit-done
12935 Save the changes you have made and return to the summary buffer
12936 (@code{gnus-score-edit-done}).
12939 @kindex C-c C-d (Score)
12940 @findex gnus-score-edit-insert-date
12941 Insert the current date in numerical format
12942 (@code{gnus-score-edit-insert-date}). This is really the day number, if
12943 you were wondering.
12946 @kindex C-c C-p (Score)
12947 @findex gnus-score-pretty-print
12948 The adaptive score files are saved in an unformatted fashion. If you
12949 intend to read one of these files, you want to @dfn{pretty print} it
12950 first. This command (@code{gnus-score-pretty-print}) does that for
12955 Type @kbd{M-x gnus-score-mode} to use this mode.
12957 @vindex gnus-score-mode-hook
12958 @code{gnus-score-menu-hook} is run in score mode buffers.
12960 In the summary buffer you can use commands like @kbd{V f} and @kbd{V
12961 e} to begin editing score files.
12964 @node Adaptive Scoring
12965 @section Adaptive Scoring
12966 @cindex adaptive scoring
12968 If all this scoring is getting you down, Gnus has a way of making it all
12969 happen automatically---as if by magic. Or rather, as if by artificial
12970 stupidity, to be precise.
12972 @vindex gnus-use-adaptive-scoring
12973 When you read an article, or mark an article as read, or kill an
12974 article, you leave marks behind. On exit from the group, Gnus can sniff
12975 these marks and add score elements depending on what marks it finds.
12976 You turn on this ability by setting @code{gnus-use-adaptive-scoring} to
12977 @code{t} or @code{(line)}. If you want score adaptively on separate
12978 words appearing in the subjects, you should set this variable to
12979 @code{(word)}. If you want to use both adaptive methods, set this
12980 variable to @code{(word line)}.
12982 @vindex gnus-default-adaptive-score-alist
12983 To give you complete control over the scoring process, you can customize
12984 the @code{gnus-default-adaptive-score-alist} variable. For instance, it
12985 might look something like this:
12988 (defvar gnus-default-adaptive-score-alist
12989 '((gnus-unread-mark)
12990 (gnus-ticked-mark (from 4))
12991 (gnus-dormant-mark (from 5))
12992 (gnus-del-mark (from -4) (subject -1))
12993 (gnus-read-mark (from 4) (subject 2))
12994 (gnus-expirable-mark (from -1) (subject -1))
12995 (gnus-killed-mark (from -1) (subject -3))
12996 (gnus-kill-file-mark)
12997 (gnus-ancient-mark)
12998 (gnus-low-score-mark)
12999 (gnus-catchup-mark (from -1) (subject -1))))
13002 As you see, each element in this alist has a mark as a key (either a
13003 variable name or a ``real'' mark---a character). Following this key is
13004 a arbitrary number of header/score pairs. If there are no header/score
13005 pairs following the key, no adaptive scoring will be done on articles
13006 that have that key as the article mark. For instance, articles with
13007 @code{gnus-unread-mark} in the example above will not get adaptive score
13010 Each article can have only one mark, so just a single of these rules
13011 will be applied to each article.
13013 To take @code{gnus-del-mark} as an example---this alist says that all
13014 articles that have that mark (i.e., are marked with @samp{D}) will have a
13015 score entry added to lower based on the @code{From} header by -4, and
13016 lowered by @code{Subject} by -1. Change this to fit your prejudices.
13018 If you have marked 10 articles with the same subject with
13019 @code{gnus-del-mark}, the rule for that mark will be applied ten times.
13020 That means that that subject will get a score of ten times -1, which
13021 should be, unless I'm much mistaken, -10.
13023 If you have auto-expirable (mail) groups (@pxref{Expiring Mail}), all
13024 the read articles will be marked with the @samp{E} mark. This'll
13025 probably make adaptive scoring slightly impossible, so auto-expiring and
13026 adaptive scoring doesn't really mix very well.
13028 The headers you can score on are @code{from}, @code{subject},
13029 @code{message-id}, @code{references}, @code{xref}, @code{lines},
13030 @code{chars} and @code{date}. In addition, you can score on
13031 @code{followup}, which will create an adaptive score entry that matches
13032 on the @code{References} header using the @code{Message-ID} of the
13033 current article, thereby matching the following thread.
13035 You can also score on @code{thread}, which will try to score all
13036 articles that appear in a thread. @code{thread} matches uses a
13037 @code{Message-ID} to match on the @code{References} header of the
13038 article. If the match is made, the @code{Message-ID} of the article is
13039 added to the @code{thread} rule. (Think about it. I'd recommend two
13040 aspirins afterwards.)
13042 If you use this scheme, you should set the score file atom @code{mark}
13043 to something small---like -300, perhaps, to avoid having small random
13044 changes result in articles getting marked as read.
13046 After using adaptive scoring for a week or so, Gnus should start to
13047 become properly trained and enhance the authors you like best, and kill
13048 the authors you like least, without you having to say so explicitly.
13050 You can control what groups the adaptive scoring is to be performed on
13051 by using the score files (@pxref{Score File Format}). This will also
13052 let you use different rules in different groups.
13054 @vindex gnus-adaptive-file-suffix
13055 The adaptive score entries will be put into a file where the name is the
13056 group name with @code{gnus-adaptive-file-suffix} appended. The default
13059 @vindex gnus-score-exact-adapt-limit
13060 When doing adaptive scoring, substring or fuzzy matching would probably
13061 give you the best results in most cases. However, if the header one
13062 matches is short, the possibility for false positives is great, so if
13063 the length of the match is less than
13064 @code{gnus-score-exact-adapt-limit}, exact matching will be used. If
13065 this variable is @code{nil}, exact matching will always be used to avoid
13068 @vindex gnus-default-adaptive-word-score-alist
13069 As mentioned above, you can adapt either on individual words or entire
13070 headers. If you adapt on words, the
13071 @code{gnus-default-adaptive-word-score-alist} variable says what score
13072 each instance of a word should add given a mark.
13075 (setq gnus-default-adaptive-word-score-alist
13076 `((,gnus-read-mark . 30)
13077 (,gnus-catchup-mark . -10)
13078 (,gnus-killed-mark . -20)
13079 (,gnus-del-mark . -15)))
13082 This is the default value. If you have adaption on words enabled, every
13083 word that appears in subjects of articles marked with
13084 @code{gnus-read-mark} will result in a score rule that increase the
13085 score with 30 points.
13087 @vindex gnus-default-ignored-adaptive-words
13088 @vindex gnus-ignored-adaptive-words
13089 Words that appear in the @code{gnus-default-ignored-adaptive-words} list
13090 will be ignored. If you wish to add more words to be ignored, use the
13091 @code{gnus-ignored-adaptive-words} list instead.
13093 @vindex gnus-adaptive-word-syntax-table
13094 When the scoring is done, @code{gnus-adaptive-word-syntax-table} is the
13095 syntax table in effect. It is similar to the standard syntax table, but
13096 it considers numbers to be non-word-constituent characters.
13098 @vindex gnus-adaptive-word-minimum
13099 If @code{gnus-adaptive-word-minimum} is set to a number, the adaptive
13100 word scoring process will never bring down the score of an article to
13101 below this number. The default is @code{nil}.
13103 @vindex gnus-adative-word-no-group-words
13104 If @code{gnus-adative-word-no-group-words} is set to t, gnus won't
13105 adaptively word score any of the words in the group name. Useful for
13106 groups like comp.editors.emacs, where most of the subject lines contain
13109 After using this scheme for a while, it might be nice to write a
13110 @code{gnus-psychoanalyze-user} command to go through the rules and see
13111 what words you like and what words you don't like. Or perhaps not.
13113 Note that the adaptive word scoring thing is highly experimental and is
13114 likely to change in the future. Initial impressions seem to indicate
13115 that it's totally useless as it stands. Some more work (involving more
13116 rigorous statistical methods) will have to be done to make this useful.
13119 @node Home Score File
13120 @section Home Score File
13122 The score file where new score file entries will go is called the
13123 @dfn{home score file}. This is normally (and by default) the score file
13124 for the group itself. For instance, the home score file for
13125 @samp{gnu.emacs.gnus} is @file{gnu.emacs.gnus.SCORE}.
13127 However, this may not be what you want. It is often convenient to share
13128 a common home score file among many groups---all @samp{emacs} groups
13129 could perhaps use the same home score file.
13131 @vindex gnus-home-score-file
13132 The variable that controls this is @code{gnus-home-score-file}. It can
13137 A string. Then this file will be used as the home score file for all
13141 A function. The result of this function will be used as the home score
13142 file. The function will be called with the name of the group as the
13146 A list. The elements in this list can be:
13150 @var{(regexp file-name)}. If the @var{regexp} matches the group name,
13151 the @var{file-name} will will be used as the home score file.
13154 A function. If the function returns non-nil, the result will be used as
13155 the home score file.
13158 A string. Use the string as the home score file.
13161 The list will be traversed from the beginning towards the end looking
13166 So, if you want to use just a single score file, you could say:
13169 (setq gnus-home-score-file
13170 "my-total-score-file.SCORE")
13173 If you want to use @file{gnu.SCORE} for all @samp{gnu} groups and
13174 @file{rec.SCORE} for all @samp{rec} groups (and so on), you can say:
13176 @findex gnus-hierarchial-home-score-file
13178 (setq gnus-home-score-file
13179 'gnus-hierarchial-home-score-file)
13182 This is a ready-made function provided for your convenience.
13183 Other functions include
13186 @item gnus-current-home-score-file
13187 @findex gnus-current-home-score-file
13188 Return the ``current'' regular score file. This will make scoring
13189 commands add entry to the ``innermost'' matching score file.
13193 If you want to have one score file for the @samp{emacs} groups and
13194 another for the @samp{comp} groups, while letting all other groups use
13195 their own home score files:
13198 (setq gnus-home-score-file
13199 ;; All groups that match the regexp "\\.emacs"
13200 '(("\\.emacs" "emacs.SCORE")
13201 ;; All the comp groups in one score file
13202 ("^comp" "comp.SCORE")))
13205 @vindex gnus-home-adapt-file
13206 @code{gnus-home-adapt-file} works exactly the same way as
13207 @code{gnus-home-score-file}, but says what the home adaptive score file
13208 is instead. All new adaptive file entries will go into the file
13209 specified by this variable, and the same syntax is allowed.
13211 In addition to using @code{gnus-home-score-file} and
13212 @code{gnus-home-adapt-file}, you can also use group parameters
13213 (@pxref{Group Parameters}) and topic parameters (@pxref{Topic
13214 Parameters}) to achieve much the same. Group and topic parameters take
13215 precedence over this variable.
13218 @node Followups To Yourself
13219 @section Followups To Yourself
13221 Gnus offers two commands for picking out the @code{Message-ID} header in
13222 the current buffer. Gnus will then add a score rule that scores using
13223 this @code{Message-ID} on the @code{References} header of other
13224 articles. This will, in effect, increase the score of all articles that
13225 respond to the article in the current buffer. Quite useful if you want
13226 to easily note when people answer what you've said.
13230 @item gnus-score-followup-article
13231 @findex gnus-score-followup-article
13232 This will add a score to articles that directly follow up your own
13235 @item gnus-score-followup-thread
13236 @findex gnus-score-followup-thread
13237 This will add a score to all articles that appear in a thread ``below''
13241 @vindex message-sent-hook
13242 These two functions are both primarily meant to be used in hooks like
13243 @code{message-sent-hook}.
13245 If you look closely at your own @code{Message-ID}, you'll notice that
13246 the first two or three characters are always the same. Here's two of
13250 <x6u3u47icf.fsf@@eyesore.no>
13251 <x6sp9o7ibw.fsf@@eyesore.no>
13254 So ``my'' ident on this machine is @samp{x6}. This can be
13255 exploited---the following rule will raise the score on all followups to
13260 ("<x6[0-9a-z]+\\.fsf\\(_-_\\)?@@.*eyesore.no>"
13264 Whether it's the first two or first three characters that are ``yours''
13265 is system-dependent.
13269 @section Scoring Tips
13270 @cindex scoring tips
13276 @cindex scoring crossposts
13277 If you want to lower the score of crossposts, the line to match on is
13278 the @code{Xref} header.
13280 ("xref" (" talk.politics.misc:" -1000))
13283 @item Multiple crossposts
13284 If you want to lower the score of articles that have been crossposted to
13285 more than, say, 3 groups:
13287 ("xref" ("[^:\n]+:[0-9]+ +[^:\n]+:[0-9]+ +[^:\n]+:[0-9]+" -1000 nil r))
13290 @item Matching on the body
13291 This is generally not a very good idea---it takes a very long time.
13292 Gnus actually has to fetch each individual article from the server. But
13293 you might want to anyway, I guess. Even though there are three match
13294 keys (@code{Head}, @code{Body} and @code{All}), you should choose one
13295 and stick with it in each score file. If you use any two, each article
13296 will be fetched @emph{twice}. If you want to match a bit on the
13297 @code{Head} and a bit on the @code{Body}, just use @code{All} for all
13300 @item Marking as read
13301 You will probably want to mark articles that has a score below a certain
13302 number as read. This is most easily achieved by putting the following
13303 in your @file{all.SCORE} file:
13307 You may also consider doing something similar with @code{expunge}.
13309 @item Negated character classes
13310 If you say stuff like @code{[^abcd]*}, you may get unexpected results.
13311 That will match newlines, which might lead to, well, The Unknown. Say
13312 @code{[^abcd\n]*} instead.
13316 @node Reverse Scoring
13317 @section Reverse Scoring
13318 @cindex reverse scoring
13320 If you want to keep just articles that have @samp{Sex with Emacs} in the
13321 subject header, and expunge all other articles, you could put something
13322 like this in your score file:
13326 ("Sex with Emacs" 2))
13331 So, you raise all articles that match @samp{Sex with Emacs} and mark the
13332 rest as read, and expunge them to boot.
13335 @node Global Score Files
13336 @section Global Score Files
13337 @cindex global score files
13339 Sure, other newsreaders have ``global kill files''. These are usually
13340 nothing more than a single kill file that applies to all groups, stored
13341 in the user's home directory. Bah! Puny, weak newsreaders!
13343 What I'm talking about here are Global Score Files. Score files from
13344 all over the world, from users everywhere, uniting all nations in one
13345 big, happy score file union! Ange-score! New and untested!
13347 @vindex gnus-global-score-files
13348 All you have to do to use other people's score files is to set the
13349 @code{gnus-global-score-files} variable. One entry for each score file,
13350 or each score file directory. Gnus will decide by itself what score
13351 files are applicable to which group.
13353 Say you want to use the score file
13354 @file{/ftp@@ftp.gnus.org:/pub/larsi/ding/score/soc.motss.SCORE} and
13355 all score files in the @file{/ftp@@ftp.some-where:/pub/score} directory:
13358 (setq gnus-global-score-files
13359 '("/ftp@@ftp.gnus.org:/pub/larsi/ding/score/soc.motss.SCORE"
13360 "/ftp@@ftp.some-where:/pub/score/"))
13363 @findex gnus-score-search-global-directories
13364 Simple, eh? Directory names must end with a @samp{/}. These
13365 directories are typically scanned only once during each Gnus session.
13366 If you feel the need to manually re-scan the remote directories, you can
13367 use the @code{gnus-score-search-global-directories} command.
13369 Note that, at present, using this option will slow down group entry
13370 somewhat. (That is---a lot.)
13372 If you want to start maintaining score files for other people to use,
13373 just put your score file up for anonymous ftp and announce it to the
13374 world. Become a retro-moderator! Participate in the retro-moderator
13375 wars sure to ensue, where retro-moderators battle it out for the
13376 sympathy of the people, luring them to use their score files on false
13377 premises! Yay! The net is saved!
13379 Here are some tips for the would-be retro-moderator, off the top of my
13385 Articles heavily crossposted are probably junk.
13387 To lower a single inappropriate article, lower by @code{Message-ID}.
13389 Particularly brilliant authors can be raised on a permanent basis.
13391 Authors that repeatedly post off-charter for the group can safely be
13392 lowered out of existence.
13394 Set the @code{mark} and @code{expunge} atoms to obliterate the nastiest
13395 articles completely.
13398 Use expiring score entries to keep the size of the file down. You
13399 should probably have a long expiry period, though, as some sites keep
13400 old articles for a long time.
13403 ... I wonder whether other newsreaders will support global score files
13404 in the future. @emph{Snicker}. Yup, any day now, newsreaders like Blue
13405 Wave, xrn and 1stReader are bound to implement scoring. Should we start
13406 holding our breath yet?
13410 @section Kill Files
13413 Gnus still supports those pesky old kill files. In fact, the kill file
13414 entries can now be expiring, which is something I wrote before Daniel
13415 Quinlan thought of doing score files, so I've left the code in there.
13417 In short, kill processing is a lot slower (and I do mean @emph{a lot})
13418 than score processing, so it might be a good idea to rewrite your kill
13419 files into score files.
13421 Anyway, a kill file is a normal @code{emacs-lisp} file. You can put any
13422 forms into this file, which means that you can use kill files as some
13423 sort of primitive hook function to be run on group entry, even though
13424 that isn't a very good idea.
13426 Normal kill files look like this:
13429 (gnus-kill "From" "Lars Ingebrigtsen")
13430 (gnus-kill "Subject" "ding")
13434 This will mark every article written by me as read, and remove the
13435 marked articles from the summary buffer. Very useful, you'll agree.
13437 Other programs use a totally different kill file syntax. If Gnus
13438 encounters what looks like a @code{rn} kill file, it will take a stab at
13441 Two summary functions for editing a GNUS kill file:
13446 @kindex M-k (Summary)
13447 @findex gnus-summary-edit-local-kill
13448 Edit this group's kill file (@code{gnus-summary-edit-local-kill}).
13451 @kindex M-K (Summary)
13452 @findex gnus-summary-edit-global-kill
13453 Edit the general kill file (@code{gnus-summary-edit-global-kill}).
13456 Two group mode functions for editing the kill files:
13461 @kindex M-k (Group)
13462 @findex gnus-group-edit-local-kill
13463 Edit this group's kill file (@code{gnus-group-edit-local-kill}).
13466 @kindex M-K (Group)
13467 @findex gnus-group-edit-global-kill
13468 Edit the general kill file (@code{gnus-group-edit-global-kill}).
13471 Kill file variables:
13474 @item gnus-kill-file-name
13475 @vindex gnus-kill-file-name
13476 A kill file for the group @samp{soc.motss} is normally called
13477 @file{soc.motss.KILL}. The suffix appended to the group name to get
13478 this file name is detailed by the @code{gnus-kill-file-name} variable.
13479 The ``global'' kill file (not in the score file sense of ``global'', of
13480 course) is just called @file{KILL}.
13482 @vindex gnus-kill-save-kill-file
13483 @item gnus-kill-save-kill-file
13484 If this variable is non-@code{nil}, Gnus will save the
13485 kill file after processing, which is necessary if you use expiring
13488 @item gnus-apply-kill-hook
13489 @vindex gnus-apply-kill-hook
13490 @findex gnus-apply-kill-file-unless-scored
13491 @findex gnus-apply-kill-file
13492 A hook called to apply kill files to a group. It is
13493 @code{(gnus-apply-kill-file)} by default. If you want to ignore the
13494 kill file if you have a score file for the same group, you can set this
13495 hook to @code{(gnus-apply-kill-file-unless-scored)}. If you don't want
13496 kill files to be processed, you should set this variable to @code{nil}.
13498 @item gnus-kill-file-mode-hook
13499 @vindex gnus-kill-file-mode-hook
13500 A hook called in kill-file mode buffers.
13505 @node Converting Kill Files
13506 @section Converting Kill Files
13508 @cindex converting kill files
13510 If you have loads of old kill files, you may want to convert them into
13511 score files. If they are ``regular'', you can use
13512 the @file{gnus-kill-to-score.el} package; if not, you'll have to do it
13515 The kill to score conversion package isn't included in Gnus by default.
13516 You can fetch it from
13517 @file{http://www.stud.ifi.uio.no/~larsi/ding-other/gnus-kill-to-score}.
13519 If your old kill files are very complex---if they contain more
13520 non-@code{gnus-kill} forms than not, you'll have to convert them by
13521 hand. Or just let them be as they are. Gnus will still use them as
13529 GroupLens is a collaborative filtering system that helps you work
13530 together with other people to find the quality news articles out of the
13531 huge volume of news articles generated every day.
13533 To accomplish this the GroupLens system combines your opinions about
13534 articles you have already read with the opinions of others who have done
13535 likewise and gives you a personalized prediction for each unread news
13536 article. Think of GroupLens as a matchmaker. GroupLens watches how you
13537 rate articles, and finds other people that rate articles the same way.
13538 Once it has found some people you agree with it tells you, in the form
13539 of a prediction, what they thought of the article. You can use this
13540 prediction to help you decide whether or not you want to read the
13544 * Using GroupLens:: How to make Gnus use GroupLens.
13545 * Rating Articles:: Letting GroupLens know how you rate articles.
13546 * Displaying Predictions:: Displaying predictions given by GroupLens.
13547 * GroupLens Variables:: Customizing GroupLens.
13551 @node Using GroupLens
13552 @subsection Using GroupLens
13554 To use GroupLens you must register a pseudonym with your local Better
13556 @samp{http://www.cs.umn.edu/Research/GroupLens/bbb.html} is the only
13557 better bit in town at the moment.
13559 Once you have registered you'll need to set a couple of variables.
13563 @item gnus-use-grouplens
13564 @vindex gnus-use-grouplens
13565 Setting this variable to a non-@code{nil} value will make Gnus hook into
13566 all the relevant GroupLens functions.
13568 @item grouplens-pseudonym
13569 @vindex grouplens-pseudonym
13570 This variable should be set to the pseudonym you got when registering
13571 with the Better Bit Bureau.
13573 @item grouplens-newsgroups
13574 @vindex grouplens-newsgroups
13575 A list of groups that you want to get GroupLens predictions for.
13579 That's the minimum of what you need to get up and running with GroupLens.
13580 Once you've registered, GroupLens will start giving you scores for
13581 articles based on the average of what other people think. But, to get
13582 the real benefit of GroupLens you need to start rating articles
13583 yourself. Then the scores GroupLens gives you will be personalized for
13584 you, based on how the people you usually agree with have already rated.
13587 @node Rating Articles
13588 @subsection Rating Articles
13590 In GroupLens, an article is rated on a scale from 1 to 5, inclusive.
13591 Where 1 means something like this article is a waste of bandwidth and 5
13592 means that the article was really good. The basic question to ask
13593 yourself is, "on a scale from 1 to 5 would I like to see more articles
13596 There are four ways to enter a rating for an article in GroupLens.
13601 @kindex r (GroupLens)
13602 @findex bbb-summary-rate-article
13603 This function will prompt you for a rating on a scale of one to five.
13606 @kindex k (GroupLens)
13607 @findex grouplens-score-thread
13608 This function will prompt you for a rating, and rate all the articles in
13609 the thread. This is really useful for some of those long running giant
13610 threads in rec.humor.
13614 The next two commands, @kbd{n} and @kbd{,} take a numerical prefix to be
13615 the score of the article you're reading.
13620 @kindex n (GroupLens)
13621 @findex grouplens-next-unread-article
13622 Rate the article and go to the next unread article.
13625 @kindex , (GroupLens)
13626 @findex grouplens-best-unread-article
13627 Rate the article and go to the next unread article with the highest score.
13631 If you want to give the current article a score of 4 and then go to the
13632 next article, just type @kbd{4 n}.
13635 @node Displaying Predictions
13636 @subsection Displaying Predictions
13638 GroupLens makes a prediction for you about how much you will like a
13639 news article. The predictions from GroupLens are on a scale from 1 to
13640 5, where 1 is the worst and 5 is the best. You can use the predictions
13641 from GroupLens in one of three ways controlled by the variable
13642 @code{gnus-grouplens-override-scoring}.
13644 @vindex gnus-grouplens-override-scoring
13645 There are three ways to display predictions in grouplens. You may
13646 choose to have the GroupLens scores contribute to, or override the
13647 regular gnus scoring mechanism. override is the default; however, some
13648 people prefer to see the Gnus scores plus the grouplens scores. To get
13649 the separate scoring behavior you need to set
13650 @code{gnus-grouplens-override-scoring} to @code{'separate}. To have the
13651 GroupLens predictions combined with the grouplens scores set it to
13652 @code{'override} and to combine the scores set
13653 @code{gnus-grouplens-override-scoring} to @code{'combine}. When you use
13654 the combine option you will also want to set the values for
13655 @code{grouplens-prediction-offset} and
13656 @code{grouplens-score-scale-factor}.
13658 @vindex grouplens-prediction-display
13659 In either case, GroupLens gives you a few choices for how you would like
13660 to see your predictions displayed. The display of predictions is
13661 controlled by the @code{grouplens-prediction-display} variable.
13663 The following are valid values for that variable.
13666 @item prediction-spot
13667 The higher the prediction, the further to the right an @samp{*} is
13670 @item confidence-interval
13671 A numeric confidence interval.
13673 @item prediction-bar
13674 The higher the prediction, the longer the bar.
13676 @item confidence-bar
13677 Numerical confidence.
13679 @item confidence-spot
13680 The spot gets bigger with more confidence.
13682 @item prediction-num
13683 Plain-old numeric value.
13685 @item confidence-plus-minus
13686 Prediction +/- confidence.
13691 @node GroupLens Variables
13692 @subsection GroupLens Variables
13696 @item gnus-summary-grouplens-line-format
13697 The summary line format used in GroupLens-enhanced summary buffers. It
13698 accepts the same specs as the normal summary line format (@pxref{Summary
13699 Buffer Lines}). The default is @samp{%U%R%z%l%I%(%[%4L: %-20,20n%]%)
13702 @item grouplens-bbb-host
13703 Host running the bbbd server. @samp{grouplens.cs.umn.edu} is the
13706 @item grouplens-bbb-port
13707 Port of the host running the bbbd server. The default is 9000.
13709 @item grouplens-score-offset
13710 Offset the prediction by this value. In other words, subtract the
13711 prediction value by this number to arrive at the effective score. The
13714 @item grouplens-score-scale-factor
13715 This variable allows the user to magnify the effect of GroupLens scores.
13716 The scale factor is applied after the offset. The default is 1.
13721 @node Advanced Scoring
13722 @section Advanced Scoring
13724 Scoring on Subjects and From headers is nice enough, but what if you're
13725 really interested in what a person has to say only when she's talking
13726 about a particular subject? Or what if you really don't want to
13727 read what person A has to say when she's following up to person B, but
13728 want to read what she says when she's following up to person C?
13730 By using advanced scoring rules you may create arbitrarily complex
13734 * Advanced Scoring Syntax:: A definition.
13735 * Advanced Scoring Examples:: What they look like.
13736 * Advanced Scoring Tips:: Getting the most out of it.
13740 @node Advanced Scoring Syntax
13741 @subsection Advanced Scoring Syntax
13743 Ordinary scoring rules have a string as the first element in the rule.
13744 Advanced scoring rules have a list as the first element. The second
13745 element is the score to be applied if the first element evaluated to a
13746 non-@code{nil} value.
13748 These lists may consist of three logical operators, one redirection
13749 operator, and various match operators.
13756 This logical operator will evaluate each of its arguments until it finds
13757 one that evaluates to @code{false}, and then it'll stop. If all arguments
13758 evaluate to @code{true} values, then this operator will return
13763 This logical operator will evaluate each of its arguments until it finds
13764 one that evaluates to @code{true}. If no arguments are @code{true},
13765 then this operator will return @code{false}.
13770 This logical operator only takes a single argument. It returns the
13771 logical negation of the value of its argument.
13775 There is an @dfn{indirection operator} that will make its arguments
13776 apply to the ancestors of the current article being scored. For
13777 instance, @code{1-} will make score rules apply to the parent of the
13778 current article. @code{2-} will make score rules apply to the
13779 grandparent of the current article. Alternatively, you can write
13780 @code{^^}, where the number of @code{^}s (carets) says how far back into
13781 the ancestry you want to go.
13783 Finally, we have the match operators. These are the ones that do the
13784 real work. Match operators are header name strings followed by a match
13785 and a match type. A typical match operator looks like @samp{("from"
13786 "Lars Ingebrigtsen" s)}. The header names are the same as when using
13787 simple scoring, and the match types are also the same.
13790 @node Advanced Scoring Examples
13791 @subsection Advanced Scoring Examples
13793 Let's say you want to increase the score of articles written by Lars
13794 when he's talking about Gnus:
13798 ("from" "Lars Ingebrigtsen")
13799 ("subject" "Gnus"))
13805 When he writes long articles, he sometimes has something nice to say:
13809 ("from" "Lars Ingebrigtsen")
13816 However, when he responds to things written by Reig Eigil Logge, you
13817 really don't want to read what he's written:
13821 ("from" "Lars Ingebrigtsen")
13822 (1- ("from" "Reig Eigir Logge")))
13826 Everybody that follows up Redmondo when he writes about disappearing
13827 socks should have their scores raised, but only when they talk about
13828 white socks. However, when Lars talks about socks, it's usually not
13835 ("from" "redmondo@@.*no" r)
13836 ("body" "disappearing.*socks" t)))
13837 (! ("from" "Lars Ingebrigtsen"))
13838 ("body" "white.*socks"))
13842 The possibilities are endless.
13845 @node Advanced Scoring Tips
13846 @subsection Advanced Scoring Tips
13848 The @code{&} and @code{|} logical operators do short-circuit logic.
13849 That is, they stop processing their arguments when it's clear what the
13850 result of the operation will be. For instance, if one of the arguments
13851 of an @code{&} evaluates to @code{false}, there's no point in evaluating
13852 the rest of the arguments. This means that you should put slow matches
13853 (@samp{body}, @samp{header}) last and quick matches (@samp{from},
13854 @samp{subject}) first.
13856 The indirection arguments (@code{1-} and so on) will make their
13857 arguments work on previous generations of the thread. If you say
13868 Then that means "score on the from header of the grandparent of the
13869 current article". An indirection is quite fast, but it's better to say:
13875 ("subject" "Gnus")))
13882 (1- ("from" "Lars"))
13883 (1- ("subject" "Gnus")))
13888 @section Score Decays
13889 @cindex score decays
13892 You may find that your scores have a tendency to grow without
13893 bounds, especially if you're using adaptive scoring. If scores get too
13894 big, they lose all meaning---they simply max out and it's difficult to
13895 use them in any sensible way.
13897 @vindex gnus-decay-scores
13898 @findex gnus-decay-score
13899 @vindex gnus-decay-score-function
13900 Gnus provides a mechanism for decaying scores to help with this problem.
13901 When score files are loaded and @code{gnus-decay-scores} is
13902 non-@code{nil}, Gnus will run the score files through the decaying
13903 mechanism thereby lowering the scores of all non-permanent score rules.
13904 The decay itself if performed by the @code{gnus-decay-score-function}
13905 function, which is @code{gnus-decay-score} by default. Here's the
13906 definition of that function:
13909 (defun gnus-decay-score (score)
13911 This is done according to `gnus-score-decay-constant'
13912 and `gnus-score-decay-scale'."
13915 (* (if (< score 0) 1 -1)
13917 (max gnus-score-decay-constant
13919 gnus-score-decay-scale)))))))
13922 @vindex gnus-score-decay-scale
13923 @vindex gnus-score-decay-constant
13924 @code{gnus-score-decay-constant} is 3 by default and
13925 @code{gnus-score-decay-scale} is 0.05. This should cause the following:
13929 Scores between -3 and 3 will be set to 0 when this function is called.
13932 Scores with magnitudes between 3 and 60 will be shrunk by 3.
13935 Scores with magnitudes greater than 60 will be shrunk by 5% of the
13939 If you don't like this decay function, write your own. It is called
13940 with the score to be decayed as its only parameter, and it should return
13941 the new score, which should be an integer.
13943 Gnus will try to decay scores once a day. If you haven't run Gnus for
13944 four days, Gnus will decay the scores four times, for instance.
13951 * Process/Prefix:: A convention used by many treatment commands.
13952 * Interactive:: Making Gnus ask you many questions.
13953 * Symbolic Prefixes:: How to supply some Gnus functions with options.
13954 * Formatting Variables:: You can specify what buffers should look like.
13955 * Windows Configuration:: Configuring the Gnus buffer windows.
13956 * Faces and Fonts:: How to change how faces look.
13957 * Compilation:: How to speed Gnus up.
13958 * Mode Lines:: Displaying information in the mode lines.
13959 * Highlighting and Menus:: Making buffers look all nice and cozy.
13960 * Buttons:: Get tendonitis in ten easy steps!
13961 * Daemons:: Gnus can do things behind your back.
13962 * NoCeM:: How to avoid spam and other fatty foods.
13963 * Undo:: Some actions can be undone.
13964 * Moderation:: What to do if you're a moderator.
13965 * XEmacs Enhancements:: There are more pictures and stuff under XEmacs.
13966 * Fuzzy Matching:: What's the big fuzz?
13967 * Thwarting Email Spam:: A how-to on avoiding unsolicited commercial email.
13968 * Various Various:: Things that are really various.
13972 @node Process/Prefix
13973 @section Process/Prefix
13974 @cindex process/prefix convention
13976 Many functions, among them functions for moving, decoding and saving
13977 articles, use what is known as the @dfn{Process/Prefix convention}.
13979 This is a method for figuring out what articles the user wants the
13980 command to be performed on.
13984 If the numeric prefix is N, perform the operation on the next N
13985 articles, starting with the current one. If the numeric prefix is
13986 negative, perform the operation on the previous N articles, starting
13987 with the current one.
13989 @vindex transient-mark-mode
13990 If @code{transient-mark-mode} in non-@code{nil} and the region is
13991 active, all articles in the region will be worked upon.
13993 If there is no numeric prefix, but some articles are marked with the
13994 process mark, perform the operation on the articles marked with
13997 If there is neither a numeric prefix nor any articles marked with the
13998 process mark, just perform the operation on the current article.
14000 Quite simple, really, but it needs to be made clear so that surprises
14003 Commands that react to the process mark will push the current list of
14004 process marked articles onto a stack and will then clear all process
14005 marked articles. You can restore the previous configuration with the
14006 @kbd{M P y} command (@pxref{Setting Process Marks}).
14008 @vindex gnus-summary-goto-unread
14009 One thing that seems to shock & horrify lots of people is that, for
14010 instance, @kbd{3 d} does exactly the same as @kbd{d} @kbd{d} @kbd{d}.
14011 Since each @kbd{d} (which marks the current article as read) by default
14012 goes to the next unread article after marking, this means that @kbd{3 d}
14013 will mark the next three unread articles as read, no matter what the
14014 summary buffer looks like. Set @code{gnus-summary-goto-unread} to
14015 @code{nil} for a more straightforward action.
14019 @section Interactive
14020 @cindex interaction
14024 @item gnus-novice-user
14025 @vindex gnus-novice-user
14026 If this variable is non-@code{nil}, you are either a newcomer to the
14027 World of Usenet, or you are very cautious, which is a nice thing to be,
14028 really. You will be given questions of the type ``Are you sure you want
14029 to do this?'' before doing anything dangerous. This is @code{t} by
14032 @item gnus-expert-user
14033 @vindex gnus-expert-user
14034 If this variable is non-@code{nil}, you will seldom be asked any
14035 questions by Gnus. It will simply assume you know what you're doing, no
14036 matter how strange.
14038 @item gnus-interactive-catchup
14039 @vindex gnus-interactive-catchup
14040 Require confirmation before catching up a group if non-@code{nil}. It
14041 is @code{t} by default.
14043 @item gnus-interactive-exit
14044 @vindex gnus-interactive-exit
14045 Require confirmation before exiting Gnus. This variable is @code{t} by
14050 @node Symbolic Prefixes
14051 @section Symbolic Prefixes
14052 @cindex symbolic prefixes
14054 Quite a lot of Emacs commands react to the (numeric) prefix. For
14055 instance, @kbd{C-u 4 C-f} moves point four characters forward, and
14056 @kbd{C-u 9 0 0 I s s p} adds a permanent @code{Subject} substring score
14057 rule of 900 to the current article.
14059 This is all nice and well, but what if you want to give a command some
14060 additional information? Well, what most commands do is interpret the
14061 ``raw'' prefix in some special way. @kbd{C-u 0 C-x C-s} means that one
14062 doesn't want a backup file to be created when saving the current buffer,
14063 for instance. But what if you want to save without making a backup
14064 file, and you want Emacs to flash lights and play a nice tune at the
14065 same time? You can't, and you're probably perfectly happy that way.
14067 @kindex M-i (Summary)
14068 @findex gnus-symbolic-argument
14069 I'm not, so I've added a second prefix---the @dfn{symbolic prefix}. The
14070 prefix key is @kbd{M-i} (@code{gnus-symbolic-argument}), and the next
14071 character typed in is the value. You can stack as many @kbd{M-i}
14072 prefixes as you want. @kbd{M-i a M-C-u} means ``feed the @kbd{M-C-u}
14073 command the symbolic prefix @code{a}''. @kbd{M-i a M-i b M-C-u} means
14074 ``feed the @kbd{M-C-u} command the symbolic prefixes @code{a} and
14075 @code{b}''. You get the drift.
14077 Typing in symbolic prefixes to commands that don't accept them doesn't
14078 hurt, but it doesn't do any good either. Currently not many Gnus
14079 functions make use of the symbolic prefix.
14081 If you're interested in how Gnus implements this, @pxref{Extended
14085 @node Formatting Variables
14086 @section Formatting Variables
14087 @cindex formatting variables
14089 Throughout this manual you've probably noticed lots of variables called
14090 things like @code{gnus-group-line-format} and
14091 @code{gnus-summary-mode-line-format}. These control how Gnus is to
14092 output lines in the various buffers. There's quite a lot of them.
14093 Fortunately, they all use the same syntax, so there's not that much to
14096 Here's an example format spec (from the group buffer): @samp{%M%S%5y:
14097 %(%g%)\n}. We see that it is indeed extremely ugly, and that there are
14098 lots of percentages everywhere.
14101 * Formatting Basics:: A formatting variable is basically a format string.
14102 * Mode Line Formatting:: Some rules about mode line formatting variables.
14103 * Advanced Formatting:: Modifying output in various ways.
14104 * User-Defined Specs:: Having Gnus call your own functions.
14105 * Formatting Fonts:: Making the formatting look colorful and nice.
14108 Currently Gnus uses the following formatting variables:
14109 @code{gnus-group-line-format}, @code{gnus-summary-line-format},
14110 @code{gnus-server-line-format}, @code{gnus-topic-line-format},
14111 @code{gnus-group-mode-line-format},
14112 @code{gnus-summary-mode-line-format},
14113 @code{gnus-article-mode-line-format},
14114 @code{gnus-server-mode-line-format}, and
14115 @code{gnus-summary-pick-line-format}.
14117 All these format variables can also be arbitrary elisp forms. In that
14118 case, they will be @code{eval}ed to insert the required lines.
14120 @kindex M-x gnus-update-format
14121 @findex gnus-update-format
14122 Gnus includes a command to help you while creating your own format
14123 specs. @kbd{M-x gnus-update-format} will @code{eval} the current form,
14124 update the spec in question and pop you to a buffer where you can
14125 examine the resulting lisp code to be run to generate the line.
14129 @node Formatting Basics
14130 @subsection Formatting Basics
14132 Each @samp{%} element will be replaced by some string or other when the
14133 buffer in question is generated. @samp{%5y} means ``insert the @samp{y}
14134 spec, and pad with spaces to get a 5-character field''.
14136 As with normal C and Emacs Lisp formatting strings, the numerical
14137 modifier between the @samp{%} and the formatting type character will
14138 @dfn{pad} the output so that it is always at least that long.
14139 @samp{%5y} will make the field always (at least) five characters wide by
14140 padding with spaces to the left. If you say @samp{%-5y}, it will pad to
14143 You may also wish to limit the length of the field to protect against
14144 particularly wide values. For that you can say @samp{%4,6y}, which
14145 means that the field will never be more than 6 characters wide and never
14146 less than 4 characters wide.
14149 @node Mode Line Formatting
14150 @subsection Mode Line Formatting
14152 Mode line formatting variables (e.g.,
14153 @code{gnus-summary-mode-line-format}) follow the same rules as other,
14154 buffer line oriented formatting variables (@pxref{Formatting Basics})
14155 with the following two differences:
14160 There must be no newline (@samp{\n}) at the end.
14163 The special @samp{%%b} spec can be used to display the buffer name.
14164 Well, it's no spec at all, really---@samp{%%} is just a way to quote
14165 @samp{%} to allow it to pass through the formatting machinery unmangled,
14166 so that Emacs receives @samp{%b}, which is something the Emacs mode line
14167 display interprets to mean ``show the buffer name''. For a full list of
14168 mode line specs Emacs understands, see the documentation of the
14169 @code{mode-line-format} variable.
14174 @node Advanced Formatting
14175 @subsection Advanced Formatting
14177 It is frequently useful to post-process the fields in some way.
14178 Padding, limiting, cutting off parts and suppressing certain values can
14179 be achieved by using @dfn{tilde modifiers}. A typical tilde spec might
14180 look like @samp{%~(cut 3)~(ignore "0")y}.
14182 These are the valid modifiers:
14187 Pad the field to the left with spaces until it reaches the required
14191 Pad the field to the right with spaces until it reaches the required
14196 Cut off characters from the left until it reaches the specified length.
14199 Cut off characters from the right until it reaches the specified
14204 Cut off the specified number of characters from the left.
14207 Cut off the specified number of characters from the right.
14210 Return an empty string if the field is equal to the specified value.
14213 Use the specified form as the field value when the @samp{@@} spec is
14217 Let's take an example. The @samp{%o} spec in the summary mode lines
14218 will return a date in compact ISO8601 format---@samp{19960809T230410}.
14219 This is quite a mouthful, so we want to shave off the century number and
14220 the time, leaving us with a six-character date. That would be
14221 @samp{%~(cut-left 2)~(max-right 6)~(pad 6)o}. (Cutting is done before
14222 maxing, and we need the padding to ensure that the date is never less
14223 than 6 characters to make it look nice in columns.)
14225 Ignoring is done first; then cutting; then maxing; and then as the very
14226 last operation, padding.
14228 If you use lots of these advanced thingies, you'll find that Gnus gets
14229 quite slow. This can be helped enormously by running @kbd{M-x
14230 gnus-compile} when you are satisfied with the look of your lines.
14231 @xref{Compilation}.
14234 @node User-Defined Specs
14235 @subsection User-Defined Specs
14237 All the specs allow for inserting user defined specifiers---@samp{u}.
14238 The next character in the format string should be a letter. Gnus
14239 will call the function @code{gnus-user-format-function-}@samp{X}, where
14240 @samp{X} is the letter following @samp{%u}. The function will be passed
14241 a single parameter---what the parameter means depends on what buffer
14242 it's being called from. The function should return a string, which will
14243 be inserted into the buffer just like information from any other
14244 specifier. This function may also be called with dummy values, so it
14245 should protect against that.
14247 You can also use tilde modifiers (@pxref{Advanced Formatting} to achieve
14248 much the same without defining new functions. Here's an example:
14249 @samp{%~(form (count-lines (point-min) (point)))@@}. The form
14250 given here will be evaluated to yield the current line number, and then
14254 @node Formatting Fonts
14255 @subsection Formatting Fonts
14257 There are specs for highlighting, and these are shared by all the format
14258 variables. Text inside the @samp{%(} and @samp{%)} specifiers will get
14259 the special @code{mouse-face} property set, which means that it will be
14260 highlighted (with @code{gnus-mouse-face}) when you put the mouse pointer
14263 Text inside the @samp{%@{} and @samp{%@}} specifiers will have their
14264 normal faces set using @code{gnus-face-0}, which is @code{bold} by
14265 default. If you say @samp{%1@{}, you'll get @code{gnus-face-1} instead,
14266 and so on. Create as many faces as you wish. The same goes for the
14267 @code{mouse-face} specs---you can say @samp{%3(hello%)} to have
14268 @samp{hello} mouse-highlighted with @code{gnus-mouse-face-3}.
14270 Here's an alternative recipe for the group buffer:
14273 ;; Create three face types.
14274 (setq gnus-face-1 'bold)
14275 (setq gnus-face-3 'italic)
14277 ;; We want the article count to be in
14278 ;; a bold and green face. So we create
14279 ;; a new face called `my-green-bold'.
14280 (copy-face 'bold 'my-green-bold)
14282 (set-face-foreground 'my-green-bold "ForestGreen")
14283 (setq gnus-face-2 'my-green-bold)
14285 ;; Set the new & fancy format.
14286 (setq gnus-group-line-format
14287 "%M%S%3@{%5y%@}%2[:%] %(%1@{%g%@}%)\n")
14290 I'm sure you'll be able to use this scheme to create totally unreadable
14291 and extremely vulgar displays. Have fun!
14293 Note that the @samp{%(} specs (and friends) do not make any sense on the
14294 mode-line variables.
14297 @node Windows Configuration
14298 @section Windows Configuration
14299 @cindex windows configuration
14301 No, there's nothing here about X, so be quiet.
14303 @vindex gnus-use-full-window
14304 If @code{gnus-use-full-window} non-@code{nil}, Gnus will delete all
14305 other windows and occupy the entire Emacs screen by itself. It is
14306 @code{t} by default.
14308 Setting this variable to @code{nil} kinda works, but there are
14309 glitches. Use at your own peril.
14311 @vindex gnus-buffer-configuration
14312 @code{gnus-buffer-configuration} describes how much space each Gnus
14313 buffer should be given. Here's an excerpt of this variable:
14316 ((group (vertical 1.0 (group 1.0 point)
14317 (if gnus-carpal (group-carpal 4))))
14318 (article (vertical 1.0 (summary 0.25 point)
14322 This is an alist. The @dfn{key} is a symbol that names some action or
14323 other. For instance, when displaying the group buffer, the window
14324 configuration function will use @code{group} as the key. A full list of
14325 possible names is listed below.
14327 The @dfn{value} (i.e., the @dfn{split}) says how much space each buffer
14328 should occupy. To take the @code{article} split as an example -
14331 (article (vertical 1.0 (summary 0.25 point)
14335 This @dfn{split} says that the summary buffer should occupy 25% of upper
14336 half of the screen, and that it is placed over the article buffer. As
14337 you may have noticed, 100% + 25% is actually 125% (yup, I saw y'all
14338 reaching for that calculator there). However, the special number
14339 @code{1.0} is used to signal that this buffer should soak up all the
14340 rest of the space available after the rest of the buffers have taken
14341 whatever they need. There should be only one buffer with the @code{1.0}
14342 size spec per split.
14344 Point will be put in the buffer that has the optional third element
14345 @code{point}. In a @code{frame} split, the last subsplit having a leaf
14346 split where the tag @code{frame-focus} is a member (i.e. is the third or
14347 fourth element in the list, depending on whether the @code{point} tag is
14348 present) gets focus.
14350 Here's a more complicated example:
14353 (article (vertical 1.0 (group 4)
14354 (summary 0.25 point)
14355 (if gnus-carpal (summary-carpal 4))
14359 If the size spec is an integer instead of a floating point number,
14360 then that number will be used to say how many lines a buffer should
14361 occupy, not a percentage.
14363 If the @dfn{split} looks like something that can be @code{eval}ed (to be
14364 precise---if the @code{car} of the split is a function or a subr), this
14365 split will be @code{eval}ed. If the result is non-@code{nil}, it will
14366 be used as a split. This means that there will be three buffers if
14367 @code{gnus-carpal} is @code{nil}, and four buffers if @code{gnus-carpal}
14370 Not complicated enough for you? Well, try this on for size:
14373 (article (horizontal 1.0
14378 (summary 0.25 point)
14383 Whoops. Two buffers with the mystery 100% tag. And what's that
14384 @code{horizontal} thingie?
14386 If the first element in one of the split is @code{horizontal}, Gnus will
14387 split the window horizontally, giving you two windows side-by-side.
14388 Inside each of these strips you may carry on all you like in the normal
14389 fashion. The number following @code{horizontal} says what percentage of
14390 the screen is to be given to this strip.
14392 For each split, there @emph{must} be one element that has the 100% tag.
14393 The splitting is never accurate, and this buffer will eat any leftover
14394 lines from the splits.
14396 To be slightly more formal, here's a definition of what a valid split
14400 split = frame | horizontal | vertical | buffer | form
14401 frame = "(frame " size *split ")"
14402 horizontal = "(horizontal " size *split ")"
14403 vertical = "(vertical " size *split ")"
14404 buffer = "(" buffer-name " " size *[ "point" ] *[ "frame-focus"] ")"
14405 size = number | frame-params
14406 buffer-name = group | article | summary ...
14409 The limitations are that the @code{frame} split can only appear as the
14410 top-level split. @var{form} should be an Emacs Lisp form that should
14411 return a valid split. We see that each split is fully recursive, and
14412 may contain any number of @code{vertical} and @code{horizontal} splits.
14414 @vindex gnus-window-min-width
14415 @vindex gnus-window-min-height
14416 @cindex window height
14417 @cindex window width
14418 Finding the right sizes can be a bit complicated. No window may be less
14419 than @code{gnus-window-min-height} (default 1) characters high, and all
14420 windows must be at least @code{gnus-window-min-width} (default 1)
14421 characters wide. Gnus will try to enforce this before applying the
14422 splits. If you want to use the normal Emacs window width/height limit,
14423 you can just set these two variables to @code{nil}.
14425 If you're not familiar with Emacs terminology, @code{horizontal} and
14426 @code{vertical} splits may work the opposite way of what you'd expect.
14427 Windows inside a @code{horizontal} split are shown side-by-side, and
14428 windows within a @code{vertical} split are shown above each other.
14430 @findex gnus-configure-frame
14431 If you want to experiment with window placement, a good tip is to call
14432 @code{gnus-configure-frame} directly with a split. This is the function
14433 that does all the real work when splitting buffers. Below is a pretty
14434 nonsensical configuration with 5 windows; two for the group buffer and
14435 three for the article buffer. (I said it was nonsensical.) If you
14436 @code{eval} the statement below, you can get an idea of how that would
14437 look straight away, without going through the normal Gnus channels.
14438 Play with it until you're satisfied, and then use
14439 @code{gnus-add-configuration} to add your new creation to the buffer
14440 configuration list.
14443 (gnus-configure-frame
14447 (article 0.3 point))
14455 You might want to have several frames as well. No prob---just use the
14456 @code{frame} split:
14459 (gnus-configure-frame
14462 (summary 0.25 point frame-focus)
14464 (vertical ((height . 5) (width . 15)
14465 (user-position . t)
14466 (left . -1) (top . 1))
14471 This split will result in the familiar summary/article window
14472 configuration in the first (or ``main'') frame, while a small additional
14473 frame will be created where picons will be shown. As you can see,
14474 instead of the normal @code{1.0} top-level spec, each additional split
14475 should have a frame parameter alist as the size spec.
14476 @xref{Frame Parameters, , Frame Parameters, elisp, The GNU Emacs Lisp
14477 Reference Manual}. Under XEmacs, a frame property list will be
14478 accepted, too---for instance, @code{(height 5 width 15 left -1 top 1)}
14481 Here's a list of all possible keys for
14482 @code{gnus-buffer-configuration}:
14484 @code{group}, @code{summary}, @code{article}, @code{server},
14485 @code{browse}, @code{message}, @code{pick}, @code{info},
14486 @code{summary-faq}, @code{edit-group}, @code{edit-server},
14487 @code{edit-score}, @code{post}, @code{reply}, @code{forward},
14488 @code{reply-yank}, @code{mail-bounce}, @code{draft}, @code{pipe},
14489 @code{bug}, @code{compose-bounce}, and @code{score-trace}.
14491 Note that the @code{message} key is used for both
14492 @code{gnus-group-mail} and @code{gnus-summary-mail-other-window}. If
14493 it is desirable to distinguish between the two, something like this
14497 (message (horizontal 1.0
14498 (vertical 1.0 (message 1.0 point))
14500 (if (buffer-live-p gnus-summary-buffer)
14505 @findex gnus-add-configuration
14506 Since the @code{gnus-buffer-configuration} variable is so long and
14507 complicated, there's a function you can use to ease changing the config
14508 of a single setting: @code{gnus-add-configuration}. If, for instance,
14509 you want to change the @code{article} setting, you could say:
14512 (gnus-add-configuration
14513 '(article (vertical 1.0
14515 (summary .25 point)
14519 You'd typically stick these @code{gnus-add-configuration} calls in your
14520 @file{.gnus.el} file or in some startup hook---they should be run after
14521 Gnus has been loaded.
14523 @vindex gnus-always-force-window-configuration
14524 If all windows mentioned in the configuration are already visible, Gnus
14525 won't change the window configuration. If you always want to force the
14526 ``right'' window configuration, you can set
14527 @code{gnus-always-force-window-configuration} to non-@code{nil}.
14530 @node Faces and Fonts
14531 @section Faces and Fonts
14536 Fiddling with fonts and faces used to be very difficult, but these days
14537 it is very simple. You simply say @kbd{M-x customize-face}, pick out
14538 the face you want to alter, and alter it via the standard Customize
14543 @section Compilation
14544 @cindex compilation
14545 @cindex byte-compilation
14547 @findex gnus-compile
14549 Remember all those line format specification variables?
14550 @code{gnus-summary-line-format}, @code{gnus-group-line-format}, and so
14551 on. Now, Gnus will of course heed whatever these variables are, but,
14552 unfortunately, changing them will mean a quite significant slow-down.
14553 (The default values of these variables have byte-compiled functions
14554 associated with them, while the user-generated versions do not, of
14557 To help with this, you can run @kbd{M-x gnus-compile} after you've
14558 fiddled around with the variables and feel that you're (kind of)
14559 satisfied. This will result in the new specs being byte-compiled, and
14560 you'll get top speed again. Gnus will save these compiled specs in the
14561 @file{.newsrc.eld} file. (User-defined functions aren't compiled by
14562 this function, though---you should compile them yourself by sticking
14563 them into the @code{.gnus.el} file and byte-compiling that file.)
14567 @section Mode Lines
14570 @vindex gnus-updated-mode-lines
14571 @code{gnus-updated-mode-lines} says what buffers should keep their mode
14572 lines updated. It is a list of symbols. Supported symbols include
14573 @code{group}, @code{article}, @code{summary}, @code{server},
14574 @code{browse}, and @code{tree}. If the corresponding symbol is present,
14575 Gnus will keep that mode line updated with information that may be
14576 pertinent. If this variable is @code{nil}, screen refresh may be
14579 @cindex display-time
14581 @vindex gnus-mode-non-string-length
14582 By default, Gnus displays information on the current article in the mode
14583 lines of the summary and article buffers. The information Gnus wishes
14584 to display (e.g. the subject of the article) is often longer than the
14585 mode lines, and therefore have to be cut off at some point. The
14586 @code{gnus-mode-non-string-length} variable says how long the other
14587 elements on the line is (i.e., the non-info part). If you put
14588 additional elements on the mode line (e.g. a clock), you should modify
14591 @c Hook written by Francesco Potorti` <pot@cnuce.cnr.it>
14593 (add-hook 'display-time-hook
14594 (lambda () (setq gnus-mode-non-string-length
14596 (if line-number-mode 5 0)
14597 (if column-number-mode 4 0)
14598 (length display-time-string)))))
14601 If this variable is @code{nil} (which is the default), the mode line
14602 strings won't be chopped off, and they won't be padded either. Note
14603 that the default is unlikely to be desirable, as even the percentage
14604 complete in the buffer may be crowded off the mode line; the user should
14605 configure this variable appropriately for her configuration.
14608 @node Highlighting and Menus
14609 @section Highlighting and Menus
14611 @cindex highlighting
14614 @vindex gnus-visual
14615 The @code{gnus-visual} variable controls most of the Gnus-prettifying
14616 aspects. If @code{nil}, Gnus won't attempt to create menus or use fancy
14617 colors or fonts. This will also inhibit loading the @file{gnus-vis.el}
14620 This variable can be a list of visual properties that are enabled. The
14621 following elements are valid, and are all included by default:
14624 @item group-highlight
14625 Do highlights in the group buffer.
14626 @item summary-highlight
14627 Do highlights in the summary buffer.
14628 @item article-highlight
14629 Do highlights according to @code{gnus-article-display-hook} in the
14632 Turn on highlighting in all buffers.
14634 Create menus in the group buffer.
14636 Create menus in the summary buffers.
14638 Create menus in the article buffer.
14640 Create menus in the browse buffer.
14642 Create menus in the server buffer.
14644 Create menus in the score buffers.
14646 Create menus in all buffers.
14649 So if you only want highlighting in the article buffer and menus in all
14650 buffers, you could say something like:
14653 (setq gnus-visual '(article-highlight menu))
14656 If you want highlighting only and no menus whatsoever, you'd say:
14659 (setq gnus-visual '(highlight))
14662 If @code{gnus-visual} is @code{t}, highlighting and menus will be used
14663 in all Gnus buffers.
14665 Other general variables that influence the look of all buffers include:
14668 @item gnus-mouse-face
14669 @vindex gnus-mouse-face
14670 This is the face (i.e., font) used for mouse highlighting in Gnus. No
14671 mouse highlights will be done if @code{gnus-visual} is @code{nil}.
14675 There are hooks associated with the creation of all the different menus:
14679 @item gnus-article-menu-hook
14680 @vindex gnus-article-menu-hook
14681 Hook called after creating the article mode menu.
14683 @item gnus-group-menu-hook
14684 @vindex gnus-group-menu-hook
14685 Hook called after creating the group mode menu.
14687 @item gnus-summary-menu-hook
14688 @vindex gnus-summary-menu-hook
14689 Hook called after creating the summary mode menu.
14691 @item gnus-server-menu-hook
14692 @vindex gnus-server-menu-hook
14693 Hook called after creating the server mode menu.
14695 @item gnus-browse-menu-hook
14696 @vindex gnus-browse-menu-hook
14697 Hook called after creating the browse mode menu.
14699 @item gnus-score-menu-hook
14700 @vindex gnus-score-menu-hook
14701 Hook called after creating the score mode menu.
14712 Those new-fangled @dfn{mouse} contraptions is very popular with the
14713 young, hep kids who don't want to learn the proper way to do things
14714 these days. Why, I remember way back in the summer of '89, when I was
14715 using Emacs on a Tops 20 system. Three hundred users on one single
14716 machine, and every user was running Simula compilers. Bah!
14720 @vindex gnus-carpal
14721 Well, you can make Gnus display bufferfuls of buttons you can click to
14722 do anything by setting @code{gnus-carpal} to @code{t}. Pretty simple,
14723 really. Tell the chiropractor I sent you.
14728 @item gnus-carpal-mode-hook
14729 @vindex gnus-carpal-mode-hook
14730 Hook run in all carpal mode buffers.
14732 @item gnus-carpal-button-face
14733 @vindex gnus-carpal-button-face
14734 Face used on buttons.
14736 @item gnus-carpal-header-face
14737 @vindex gnus-carpal-header-face
14738 Face used on carpal buffer headers.
14740 @item gnus-carpal-group-buffer-buttons
14741 @vindex gnus-carpal-group-buffer-buttons
14742 Buttons in the group buffer.
14744 @item gnus-carpal-summary-buffer-buttons
14745 @vindex gnus-carpal-summary-buffer-buttons
14746 Buttons in the summary buffer.
14748 @item gnus-carpal-server-buffer-buttons
14749 @vindex gnus-carpal-server-buffer-buttons
14750 Buttons in the server buffer.
14752 @item gnus-carpal-browse-buffer-buttons
14753 @vindex gnus-carpal-browse-buffer-buttons
14754 Buttons in the browse buffer.
14757 All the @code{buttons} variables are lists. The elements in these list
14758 are either cons cells where the @code{car} contains a text to be displayed and
14759 the @code{cdr} contains a function symbol, or a simple string.
14767 Gnus, being larger than any program ever written (allegedly), does lots
14768 of strange stuff that you may wish to have done while you're not
14769 present. For instance, you may want it to check for new mail once in a
14770 while. Or you may want it to close down all connections to all servers
14771 when you leave Emacs idle. And stuff like that.
14773 Gnus will let you do stuff like that by defining various
14774 @dfn{handlers}. Each handler consists of three elements: A
14775 @var{function}, a @var{time}, and an @var{idle} parameter.
14777 Here's an example of a handler that closes connections when Emacs has
14778 been idle for thirty minutes:
14781 (gnus-demon-close-connections nil 30)
14784 Here's a handler that scans for PGP headers every hour when Emacs is
14788 (gnus-demon-scan-pgp 60 t)
14791 This @var{time} parameter and than @var{idle} parameter work together
14792 in a strange, but wonderful fashion. Basically, if @var{idle} is
14793 @code{nil}, then the function will be called every @var{time} minutes.
14795 If @var{idle} is @code{t}, then the function will be called after
14796 @var{time} minutes only if Emacs is idle. So if Emacs is never idle,
14797 the function will never be called. But once Emacs goes idle, the
14798 function will be called every @var{time} minutes.
14800 If @var{idle} is a number and @var{time} is a number, the function will
14801 be called every @var{time} minutes only when Emacs has been idle for
14802 @var{idle} minutes.
14804 If @var{idle} is a number and @var{time} is @code{nil}, the function
14805 will be called once every time Emacs has been idle for @var{idle}
14808 And if @var{time} is a string, it should look like @samp{07:31}, and
14809 the function will then be called once every day somewhere near that
14810 time. Modified by the @var{idle} parameter, of course.
14812 @vindex gnus-demon-timestep
14813 (When I say ``minute'' here, I really mean @code{gnus-demon-timestep}
14814 seconds. This is 60 by default. If you change that variable,
14815 all the timings in the handlers will be affected.)
14817 @vindex gnus-use-demon
14818 To set the whole thing in motion, though, you have to set
14819 @code{gnus-use-demon} to @code{t}.
14821 So, if you want to add a handler, you could put something like this in
14822 your @file{.gnus} file:
14824 @findex gnus-demon-add-handler
14826 (gnus-demon-add-handler 'gnus-demon-close-connections 30 t)
14829 @findex gnus-demon-add-nocem
14830 @findex gnus-demon-add-scanmail
14831 @findex gnus-demon-add-rescan
14832 @findex gnus-demon-add-scan-timestamps
14833 @findex gnus-demon-add-disconnection
14834 Some ready-made functions to do this have been created:
14835 @code{gnus-demon-add-nocem}, @code{gnus-demon-add-disconnection},
14836 @code{gnus-demon-add-nntp-close-connection},
14837 @code{gnus-demon-add-scan-timestamps}, @code{gnus-demon-add-rescan}, and
14838 @code{gnus-demon-add-scanmail}. Just put those functions in your
14839 @file{.gnus} if you want those abilities.
14841 @findex gnus-demon-init
14842 @findex gnus-demon-cancel
14843 @vindex gnus-demon-handlers
14844 If you add handlers to @code{gnus-demon-handlers} directly, you should
14845 run @code{gnus-demon-init} to make the changes take hold. To cancel all
14846 daemons, you can use the @code{gnus-demon-cancel} function.
14848 Note that adding daemons can be pretty naughty if you over do it. Adding
14849 functions that scan all news and mail from all servers every two seconds
14850 is a sure-fire way of getting booted off any respectable system. So
14859 @dfn{Spamming} is posting the same article lots and lots of times.
14860 Spamming is bad. Spamming is evil.
14862 Spamming is usually canceled within a day or so by various anti-spamming
14863 agencies. These agencies usually also send out @dfn{NoCeM} messages.
14864 NoCeM is pronounced ``no see-'em'', and means what the name
14865 implies---these are messages that make the offending articles, like, go
14868 What use are these NoCeM messages if the articles are canceled anyway?
14869 Some sites do not honor cancel messages and some sites just honor cancels
14870 from a select few people. Then you may wish to make use of the NoCeM
14871 messages, which are distributed in the @samp{alt.nocem.misc} newsgroup.
14873 Gnus can read and parse the messages in this group automatically, and
14874 this will make spam disappear.
14876 There are some variables to customize, of course:
14879 @item gnus-use-nocem
14880 @vindex gnus-use-nocem
14881 Set this variable to @code{t} to set the ball rolling. It is @code{nil}
14884 @item gnus-nocem-groups
14885 @vindex gnus-nocem-groups
14886 Gnus will look for NoCeM messages in the groups in this list. The
14887 default is @code{("news.lists.filters" "news.admin.net-abuse.bulletins"
14888 "alt.nocem.misc" "news.admin.net-abuse.announce")}.
14890 @item gnus-nocem-issuers
14891 @vindex gnus-nocem-issuers
14892 There are many people issuing NoCeM messages. This list says what
14893 people you want to listen to. The default is @code{("Automoose-1"
14894 "rbraver@@ohww.norman.ok.us" "clewis@@ferret.ocunix.on.ca"
14895 "jem@@xpat.com" "snowhare@@xmission.com" "red@@redpoll.mrfs.oh.us
14896 (Richard E. Depew)")}; fine, upstanding citizens all of them.
14898 Known despammers that you can put in this list include:
14901 @item clewis@@ferret.ocunix.on.ca;
14902 @cindex Chris Lewis
14903 Chris Lewis---Major Canadian despammer who has probably canceled more
14904 usenet abuse than anybody else.
14907 @cindex CancelMoose[tm]
14908 The CancelMoose[tm] on autopilot. The CancelMoose[tm] is reputed to be
14909 Norwegian, and was the person(s) who invented NoCeM.
14911 @item jem@@xpat.com;
14913 John Milburn---despammer located in Korea who is getting very busy these
14916 @item red@@redpoll.mrfs.oh.us (Richard E. Depew)
14917 Richard E. Depew---lone American despammer. He mostly cancels binary
14918 postings to non-binary groups and removes spews (regurgitated articles).
14921 You do not have to heed NoCeM messages from all these people---just the
14922 ones you want to listen to. You also don't have to accept all NoCeM
14923 messages from the people you like. Each NoCeM message has a @dfn{type}
14924 header that gives the message a (more or less, usually less) rigorous
14925 definition. Common types are @samp{spam}, @samp{spew}, @samp{mmf},
14926 @samp{binary}, and @samp{troll}. To specify this, you have to use
14927 @var{(issuer conditions ...)} elements in the list. Each condition is
14928 either a string (which is a regexp that matches types you want to use)
14929 or a list on the form @code{(not STRING)}, where @var{string} is a
14930 regexp that matches types you don't want to use.
14932 For instance, if you want all NoCeM messages from Chris Lewis except his
14933 @samp{troll} messages, you'd say:
14936 ("clewis@@ferret.ocunix.on.ca" ".*" (not "troll"))
14939 On the other hand, if you just want nothing but his @samp{spam} and
14940 @samp{spew} messages, you'd say:
14943 ("clewis@@ferret.ocunix.on.ca" (not ".*") "spew" "spam")
14946 The specs are applied left-to-right.
14949 @item gnus-nocem-verifyer
14950 @vindex gnus-nocem-verifyer
14952 This should be a function for verifying that the NoCeM issuer is who she
14953 says she is. The default is @code{mc-verify}, which is a Mailcrypt
14954 function. If this is too slow and you don't care for verification
14955 (which may be dangerous), you can set this variable to @code{nil}.
14957 If you want signed NoCeM messages to be verified and unsigned messages
14958 not to be verified (but used anyway), you could do something like:
14961 (setq gnus-nocem-verifyer 'my-gnus-mc-verify)
14963 (defun my-gnus-mc-verify ()
14971 This might be dangerous, though.
14973 @item gnus-nocem-directory
14974 @vindex gnus-nocem-directory
14975 This is where Gnus will store its NoCeM cache files. The default is
14976 @file{~/News/NoCeM/}.
14978 @item gnus-nocem-expiry-wait
14979 @vindex gnus-nocem-expiry-wait
14980 The number of days before removing old NoCeM entries from the cache.
14981 The default is 15. If you make it shorter Gnus will be faster, but you
14982 might then see old spam.
14986 Using NoCeM could potentially be a memory hog. If you have many living
14987 (i. e., subscribed or unsubscribed groups), your Emacs process will grow
14988 big. If this is a problem, you should kill off all (or most) of your
14989 unsubscribed groups (@pxref{Subscription Commands}).
14996 It is very useful to be able to undo actions one has done. In normal
14997 Emacs buffers, it's easy enough---you just push the @code{undo} button.
14998 In Gnus buffers, however, it isn't that simple.
15000 The things Gnus displays in its buffer is of no value whatsoever to
15001 Gnus---it's all just data designed to look nice to the user.
15002 Killing a group in the group buffer with @kbd{C-k} makes the line
15003 disappear, but that's just a side-effect of the real action---the
15004 removal of the group in question from the internal Gnus structures.
15005 Undoing something like that can't be done by the normal Emacs
15006 @code{undo} function.
15008 Gnus tries to remedy this somewhat by keeping track of what the user
15009 does and coming up with actions that would reverse the actions the user
15010 takes. When the user then presses the @code{undo} key, Gnus will run
15011 the code to reverse the previous action, or the previous actions.
15012 However, not all actions are easily reversible, so Gnus currently offers
15013 a few key functions to be undoable. These include killing groups,
15014 yanking groups, and changing the list of read articles of groups.
15015 That's it, really. More functions may be added in the future, but each
15016 added function means an increase in data to be stored, so Gnus will
15017 never be totally undoable.
15019 @findex gnus-undo-mode
15020 @vindex gnus-use-undo
15022 The undoability is provided by the @code{gnus-undo-mode} minor mode. It
15023 is used if @code{gnus-use-undo} is non-@code{nil}, which is the
15024 default. The @kbd{M-C-_} key performs the @code{gnus-undo} command
15025 command, which should feel kinda like the normal Emacs @code{undo}
15030 @section Moderation
15033 If you are a moderator, you can use the @file{gnus-mdrtn.el} package.
15034 It is not included in the standard Gnus package. Write a mail to
15035 @samp{larsi@@gnus.org} and state what group you moderate, and you'll
15038 The moderation package is implemented as a minor mode for summary
15042 (add-hook 'gnus-summary-mode-hook 'gnus-moderate)
15045 in your @file{.gnus.el} file.
15047 If you are the moderator of @samp{rec.zoofle}, this is how it's
15052 You split your incoming mail by matching on
15053 @samp{Newsgroups:.*rec.zoofle}, which will put all the to-be-posted
15054 articles in some mail group---for instance, @samp{nnml:rec.zoofle}.
15057 You enter that group once in a while and post articles using the @kbd{e}
15058 (edit-and-post) or @kbd{s} (just send unedited) commands.
15061 If, while reading the @samp{rec.zoofle} newsgroup, you happen upon some
15062 articles that weren't approved by you, you can cancel them with the
15066 To use moderation mode in these two groups, say:
15069 (setq gnus-moderated-list
15070 "^nnml:rec.zoofle$\\|^rec.zoofle$")
15074 @node XEmacs Enhancements
15075 @section XEmacs Enhancements
15078 XEmacs is able to display pictures and stuff, so Gnus has taken
15082 * Picons:: How to display pictures of what your reading.
15083 * Smileys:: Show all those happy faces the way they were meant to be shown.
15084 * Toolbar:: Click'n'drool.
15085 * XVarious:: Other XEmacsy Gnusey variables.
15098 So... You want to slow down your news reader even more! This is a
15099 good way to do so. Its also a great way to impress people staring
15100 over your shoulder as you read news.
15103 * Picon Basics:: What are picons and How do I get them.
15104 * Picon Requirements:: Don't go further if you aren't using XEmacs.
15105 * Easy Picons:: Displaying Picons---the easy way.
15106 * Hard Picons:: The way you should do it. You'll learn something.
15107 * Picon Useless Configuration:: Other variables you can trash/tweak/munge/play with.
15112 @subsubsection Picon Basics
15114 What are Picons? To quote directly from the Picons Web site:
15123 @dfn{Picons} is short for ``personal icons''. They're small,
15124 constrained images used to represent users and domains on the net,
15125 organized into databases so that the appropriate image for a given
15126 e-mail address can be found. Besides users and domains, there are picon
15127 databases for Usenet newsgroups and weather forecasts. The picons are
15128 in either monochrome @code{XBM} format or color @code{XPM} and
15129 @code{GIF} formats.
15132 @vindex gnus-picons-piconsearch-url
15133 If you have a permanent connection to the Internet you can use Steve
15134 Kinzler's Picons Search engine by setting
15135 @code{gnus-picons-piconsearch-url} to the string @*
15136 @file{http://www.cs.indiana.edu/picons/search.html}.
15138 @vindex gnus-picons-database
15139 Otherwise you need a local copy of his database. For instructions on
15140 obtaining and installing the picons databases, point your Web browser at @*
15141 @file{http://www.cs.indiana.edu/picons/ftp/index.html}. Gnus expects
15142 picons to be installed into a location pointed to by
15143 @code{gnus-picons-database}.
15146 @node Picon Requirements
15147 @subsubsection Picon Requirements
15149 To have Gnus display Picons for you, you must be running XEmacs
15150 19.13 or greater since all other versions of Emacs aren't yet able to
15153 Additionally, you must have @code{x} support compiled into XEmacs. To
15154 display color picons which are much nicer than the black & white one,
15155 you also need one of @code{xpm} or @code{gif} compiled into XEmacs.
15157 @vindex gnus-picons-convert-x-face
15158 If you want to display faces from @code{X-Face} headers, you should have
15159 the @code{xface} support compiled into XEmacs. Otherwise you must have
15160 the @code{netpbm} utilities installed, or munge the
15161 @code{gnus-picons-convert-x-face} variable to use something else.
15165 @subsubsection Easy Picons
15167 To enable displaying picons, simply put the following line in your
15168 @file{~/.gnus} file and start Gnus.
15171 (setq gnus-use-picons t)
15172 (add-hook 'gnus-article-display-hook
15173 'gnus-article-display-picons t)
15174 (add-hook 'gnus-article-display-hook
15175 'gnus-picons-article-display-x-face)
15178 and make sure @code{gnus-picons-database} points to the directory
15179 containing the Picons databases.
15181 Alternatively if you want to use the web piconsearch engine add this:
15184 (setq gnus-picons-piconsearch-url
15185 "http://www.cs.indiana.edu:800/piconsearch")
15190 @subsubsection Hard Picons
15198 Gnus can display picons for you as you enter and leave groups and
15199 articles. It knows how to interact with three sections of the picons
15200 database. Namely, it can display the picons newsgroup pictures,
15201 author's face picture(s), and the authors domain. To enable this
15202 feature, you need to select where to get the picons from, and where to
15207 @item gnus-picons-database
15208 @vindex gnus-picons-database
15209 The location of the picons database. Should point to a directory
15210 containing the @file{news}, @file{domains}, @file{users} (and so on)
15211 subdirectories. This is only useful if
15212 @code{gnus-picons-piconsearch-url} is @code{nil}. Defaults to
15213 @file{/usr/local/faces/}.
15215 @item gnus-picons-piconsearch-url
15216 @vindex gnus-picons-piconsearch-url
15217 The URL for the web picons search engine. The only currently known
15218 engine is @file{http://www.cs.indiana.edu:800/piconsearch}. To
15219 workaround network delays, icons will be fetched in the background. If
15220 this is @code{nil} 'the default), then picons are fetched from local
15221 database indicated by @code{gnus-picons-database}.
15223 @item gnus-picons-display-where
15224 @vindex gnus-picons-display-where
15225 Where the picon images should be displayed. It is @code{picons} by
15226 default (which by default maps to the buffer @samp{*Picons*}). Other
15227 valid places could be @code{article}, @code{summary}, or
15228 @samp{*scratch*} for all I care. Just make sure that you've made the
15229 buffer visible using the standard Gnus window configuration
15230 routines---@pxref{Windows Configuration}.
15232 @item gnus-picons-group-excluded-groups
15233 @vindex gnus-picons-group-excluded-groups
15234 Groups that are matched by this regexp won't have their group icons
15239 Note: If you set @code{gnus-use-picons} to @code{t}, it will set up your
15240 window configuration for you to include the @code{picons} buffer.
15242 Now that you've made those decision, you need to add the following
15243 functions to the appropriate hooks so these pictures will get displayed
15246 @vindex gnus-article-display-hook
15247 @vindex gnus-picons-display-where
15249 @item gnus-article-display-picons
15250 @findex gnus-article-display-picons
15251 Looks up and displays the picons for the author and the author's domain
15252 in the @code{gnus-picons-display-where} buffer. Should be added to the
15253 @code{gnus-article-display-hook}.
15255 @item gnus-picons-article-display-x-face
15256 @findex gnus-article-display-picons
15257 Decodes and displays the X-Face header if present. This function
15258 should be added to @code{gnus-article-display-hook}.
15262 Note: You must append them to the hook, so make sure to specify 't'
15263 for the append flag of @code{add-hook}:
15266 (add-hook 'gnus-article-display-hook 'gnus-article-display-picons t)
15270 @node Picon Useless Configuration
15271 @subsubsection Picon Useless Configuration
15279 The following variables offer further control over how things are
15280 done, where things are located, and other useless stuff you really
15281 don't need to worry about.
15285 @item gnus-picons-news-directories
15286 @vindex gnus-picons-news-directories
15287 List of subdirectories to search in @code{gnus-picons-database} for
15288 newsgroups faces. @code{("news")} is the default.
15290 @item gnus-picons-user-directories
15291 @vindex gnus-picons-user-directories
15292 List of subdirectories to search in @code{gnus-picons-database} for user
15293 faces. @code{("local" "users" "usenix" "misc")} is the default.
15295 @item gnus-picons-domain-directories
15296 @vindex gnus-picons-domain-directories
15297 List of subdirectories to search in @code{gnus-picons-database} for
15298 domain name faces. Defaults to @code{("domains")}. Some people may
15299 want to add @samp{"unknown"} to this list.
15301 @item gnus-picons-convert-x-face
15302 @vindex gnus-picons-convert-x-face
15303 If you don't have @code{xface} support builtin XEmacs, this is the
15304 command to use to convert the @code{X-Face} header to an X bitmap
15305 (@code{xbm}). Defaults to @code{(format "@{ echo '/* Width=48,
15306 Height=48 */'; uncompface; @} | icontopbm | pbmtoxbm > %s"
15307 gnus-picons-x-face-file-name)}
15309 @item gnus-picons-x-face-file-name
15310 @vindex gnus-picons-x-face-file-name
15311 Names a temporary file to store the @code{X-Face} bitmap in. Defaults
15312 to @code{(format "/tmp/picon-xface.%s.xbm" (user-login-name))}.
15314 @item gnus-picons-has-modeline-p
15315 @vindex gnus-picons-has-modeline-p
15316 If you have set @code{gnus-picons-display-where} to @code{picons}, your
15317 XEmacs frame will become really cluttered. To alleviate this a bit you
15318 can set @code{gnus-picons-has-modeline-p} to @code{nil}; this will
15319 remove the mode line from the Picons buffer. This is only useful if
15320 @code{gnus-picons-display-where} is @code{picons}.
15322 @item gnus-picons-refresh-before-display
15323 @vindex gnus-picons-refresh-before-display
15324 If non-nil, display the article buffer before computing the picons.
15325 Defaults to @code{nil}.
15327 @item gnus-picons-display-as-address
15328 @vindex gnus-picons-display-as-address
15329 If @code{t} display textual email addresses along with pictures.
15330 Defaults to @code{t}.
15332 @item gnus-picons-file-suffixes
15333 @vindex gnus-picons-file-suffixes
15334 Ordered list of suffixes on picon file names to try. Defaults to
15335 @code{("xpm" "gif" "xbm")} minus those not builtin your XEmacs.
15337 @item gnus-picons-display-article-move-p
15338 @vindex gnus-picons-display-article-move-p
15339 Whether to move point to first empty line when displaying picons. This
15340 has only an effect if `gnus-picons-display-where' has value `article'.
15342 @item gnus-picons-clear-cache-on-shutdown
15343 @vindex gnus-picons-clear-cache-on-shutdown
15344 Whether to clear the picons cache when exiting gnus. Gnus caches every
15345 picons it finds while it is running. This saves some time in the search
15346 process but eats some memory. If this variable is set to @code{nil},
15347 Gnus will never clear the cache itself; you will have to manually call
15348 @code{gnus-picons-clear-cache} to clear it. Otherwise the cache will be
15349 cleared every time you exit Gnus. Defaults to @code{t}.
15360 @subsection Smileys
15365 \gnusfig{-3cm}{0.5cm}{\epsfig{figure=tmp/BigFace.ps,height=20cm}}
15370 @dfn{Smiley} is a package separate from Gnus, but since Gnus is
15371 currently the only package that uses Smiley, it is documented here.
15373 In short---to use Smiley in Gnus, put the following in your
15374 @file{.gnus.el} file:
15377 (add-hook 'gnus-article-display-hook 'gnus-smiley-display t)
15380 Smiley maps text smiley faces---@samp{:-)}, @samp{:-=}, @samp{:-(} and
15381 the like---to pictures and displays those instead of the text smiley
15382 faces. The conversion is controlled by a list of regexps that matches
15383 text and maps that to file names.
15385 @vindex smiley-nosey-regexp-alist
15386 @vindex smiley-deformed-regexp-alist
15387 Smiley supplies two example conversion alists by default:
15388 @code{smiley-deformed-regexp-alist} (which matches @samp{:)}, @samp{:(}
15389 and so on), and @code{smiley-nosey-regexp-alist} (which matches
15390 @samp{:-)}, @samp{:-(} and so on).
15392 The alist used is specified by the @code{smiley-regexp-alist} variable,
15393 which defaults to the value of @code{smiley-deformed-regexp-alist}.
15395 The first item in each element is the regexp to be matched; the second
15396 element is the regexp match group that is to be replaced by the picture;
15397 and the third element is the name of the file to be displayed.
15399 The following variables customize where Smiley will look for these
15400 files, as well as the color to be used and stuff:
15404 @item smiley-data-directory
15405 @vindex smiley-data-directory
15406 Where Smiley will look for smiley faces files.
15408 @item smiley-flesh-color
15409 @vindex smiley-flesh-color
15410 Skin color. The default is @samp{yellow}, which is really racist.
15412 @item smiley-features-color
15413 @vindex smiley-features-color
15414 Color of the features of the face. The default is @samp{black}.
15416 @item smiley-tongue-color
15417 @vindex smiley-tongue-color
15418 Color of the tongue. The default is @samp{red}.
15420 @item smiley-circle-color
15421 @vindex smiley-circle-color
15422 Color of the circle around the face. The default is @samp{black}.
15424 @item smiley-mouse-face
15425 @vindex smiley-mouse-face
15426 Face used for mouse highlighting over the smiley face.
15432 @subsection Toolbar
15442 @item gnus-use-toolbar
15443 @vindex gnus-use-toolbar
15444 If @code{nil}, don't display toolbars. If non-@code{nil}, it should be
15445 one of @code{default-toolbar}, @code{top-toolbar}, @code{bottom-toolbar},
15446 @code{right-toolbar}, or @code{left-toolbar}.
15448 @item gnus-group-toolbar
15449 @vindex gnus-group-toolbar
15450 The toolbar in the group buffer.
15452 @item gnus-summary-toolbar
15453 @vindex gnus-summary-toolbar
15454 The toolbar in the summary buffer.
15456 @item gnus-summary-mail-toolbar
15457 @vindex gnus-summary-mail-toolbar
15458 The toolbar in the summary buffer of mail groups.
15464 @subsection Various XEmacs Variables
15467 @item gnus-xmas-glyph-directory
15468 @vindex gnus-xmas-glyph-directory
15469 This is where Gnus will look for pictures. Gnus will normally
15470 auto-detect this directory, but you may set it manually if you have an
15471 unusual directory structure.
15473 @item gnus-xmas-logo-color-alist
15474 @vindex gnus-xmas-logo-color-alist
15475 This is an alist where the key is a type symbol and the values are the
15476 foreground and background color of the splash page glyph.
15478 @item gnus-xmas-logo-color-style
15479 @vindex gnus-xmas-logo-color-style
15480 This is the key used to look up the color in the alist described above.
15481 Valid values include @code{flame}, @code{pine}, @code{moss},
15482 @code{irish}, @code{sky}, @code{tin}, @code{velvet}, @code{grape},
15483 @code{labia}, @code{berry}, @code{neutral}, and @code{september}.
15485 @item gnus-xmas-modeline-glyph
15486 @vindex gnus-xmas-modeline-glyph
15487 A glyph displayed in all Gnus mode lines. It is a tiny gnu head by
15501 @node Fuzzy Matching
15502 @section Fuzzy Matching
15503 @cindex fuzzy matching
15505 Gnus provides @dfn{fuzzy matching} of @code{Subject} lines when doing
15506 things like scoring, thread gathering and thread comparison.
15508 As opposed to regular expression matching, fuzzy matching is very fuzzy.
15509 It's so fuzzy that there's not even a definition of what @dfn{fuzziness}
15510 means, and the implementation has changed over time.
15512 Basically, it tries to remove all noise from lines before comparing.
15513 @samp{Re: }, parenthetical remarks, white space, and so on, are filtered
15514 out of the strings before comparing the results. This often leads to
15515 adequate results---even when faced with strings generated by text
15516 manglers masquerading as newsreaders.
15519 @node Thwarting Email Spam
15520 @section Thwarting Email Spam
15524 @cindex unsolicited commercial email
15526 In these last days of the Usenet, commercial vultures are hanging about
15527 and grepping through news like crazy to find email addresses they can
15528 foist off their scams and products to. As a reaction to this, many
15529 people have started putting nonsense addresses into their @code{From}
15530 lines. I think this is counterproductive---it makes it difficult for
15531 people to send you legitimate mail in response to things you write, as
15532 well as making it difficult to see who wrote what. This rewriting may
15533 perhaps be a bigger menace than the unsolicited commercial email itself
15536 The biggest problem I have with email spam is that it comes in under
15537 false pretenses. I press @kbd{g} and Gnus merrily informs me that I
15538 have 10 new emails. I say ``Golly gee! Happy is me!'' and select the
15539 mail group, only to find two pyramid schemes, seven advertisements
15540 (``New! Miracle tonic for growing full, lustrous hair on your toes!'')
15541 and one mail asking me to repent and find some god.
15545 The way to deal with this is having Gnus split out all spam into a
15546 @samp{spam} mail group (@pxref{Splitting Mail}).
15548 First, pick one (1) valid mail address that you can be reached at, and
15549 put it in your @code{From} header of all your news articles. (I've
15550 chosen @samp{larsi@@trym.ifi.uio.no}, but for many addresses on the form
15551 @samp{larsi+usenet@@ifi.uio.no} will be a better choice. Ask your
15552 sysadm whether your sendmail installation accepts keywords in the local
15553 part of the mail address.)
15556 (setq message-default-news-headers
15557 "From: Lars Magne Ingebrigtsen <larsi@@trym.ifi.uio.no>\n")
15560 Then put the following split rule in @code{nnmail-split-fancy}
15561 (@pxref{Fancy Mail Splitting}):
15566 (to "larsi@@trym.ifi.uio.no"
15567 (| ("subject" "re:.*" "misc")
15568 ("references" ".*@@.*" "misc")
15574 This says that all mail to this address is suspect, but if it has a
15575 @code{Subject} that starts with a @samp{Re:} or has a @code{References}
15576 header, it's probably ok. All the rest goes to the @samp{spam} group.
15577 (This idea probably comes from Tim Pierce.)
15579 In addition, many mail spammers talk directly to your @code{smtp} server
15580 and do not include your email address explicitly in the @code{To}
15581 header. Why they do this is unknown---perhaps it's to thwart this
15582 thwarting scheme? In any case, this is trivial to deal with---you just
15583 put anything not addressed to you in the @samp{spam} group by ending
15584 your fancy split rule in this way:
15589 (to "larsi" "misc")
15593 In my experience, this will sort virtually everything into the right
15594 group. You still have to check the @samp{spam} group from time to time to
15595 check for legitimate mail, though. If you feel like being a good net
15596 citizen, you can even send off complaints to the proper authorities on
15597 each unsolicited commercial email---at your leisure.
15599 If you are also a lazy net citizen, you will probably prefer complaining
15600 automatically with the @file{gnus-junk.el} package, available FOR FREE
15601 at @* @file{<URL:http://stud2.tuwien.ac.at/~e9426626/gnus-junk.html>}.
15602 Since most e-mail spam is sent automatically, this may reconcile the
15603 cosmic balance somewhat.
15605 This works for me. It allows people an easy way to contact me (they can
15606 just press @kbd{r} in the usual way), and I'm not bothered at all with
15607 spam. It's a win-win situation. Forging @code{From} headers to point
15608 to non-existent domains is yucky, in my opinion.
15611 @node Various Various
15612 @section Various Various
15618 @item gnus-home-directory
15619 All Gnus path variables will be initialized from this variable, which
15620 defaults to @file{~/}.
15622 @item gnus-directory
15623 @vindex gnus-directory
15624 Most Gnus storage path variables will be initialized from this variable,
15625 which defaults to the @samp{SAVEDIR} environment variable, or
15626 @file{~/News/} if that variable isn't set.
15628 Note that Gnus is mostly loaded when the @file{.gnus.el} file is read.
15629 This means that other directory variables that are initialized from this
15630 variable won't be set properly if you set this variable in
15631 @file{.gnus.el}. Set this variable in @file{.emacs} instead.
15633 @item gnus-default-directory
15634 @vindex gnus-default-directory
15635 Not related to the above variable at all---this variable says what the
15636 default directory of all Gnus buffers should be. If you issue commands
15637 like @kbd{C-x C-f}, the prompt you'll get starts in the current buffer's
15638 default directory. If this variable is @code{nil} (which is the
15639 default), the default directory will be the default directory of the
15640 buffer you were in when you started Gnus.
15643 @vindex gnus-verbose
15644 This variable is an integer between zero and ten. The higher the value,
15645 the more messages will be displayed. If this variable is zero, Gnus
15646 will never flash any messages, if it is seven (which is the default),
15647 most important messages will be shown, and if it is ten, Gnus won't ever
15648 shut up, but will flash so many messages it will make your head swim.
15650 @item gnus-verbose-backends
15651 @vindex gnus-verbose-backends
15652 This variable works the same way as @code{gnus-verbose}, but it applies
15653 to the Gnus backends instead of Gnus proper.
15655 @item nnheader-max-head-length
15656 @vindex nnheader-max-head-length
15657 When the backends read straight heads of articles, they all try to read
15658 as little as possible. This variable (default 4096) specifies
15659 the absolute max length the backends will try to read before giving up
15660 on finding a separator line between the head and the body. If this
15661 variable is @code{nil}, there is no upper read bound. If it is
15662 @code{t}, the backends won't try to read the articles piece by piece,
15663 but read the entire articles. This makes sense with some versions of
15664 @code{ange-ftp} or @code{efs}.
15666 @item nnheader-head-chop-length
15667 @vindex nnheader-head-chop-length
15668 This variable (default 2048) says how big a piece of each article to
15669 read when doing the operation described above.
15671 @item nnheader-file-name-translation-alist
15672 @vindex nnheader-file-name-translation-alist
15674 @cindex invalid characters in file names
15675 @cindex characters in file names
15676 This is an alist that says how to translate characters in file names.
15677 For instance, if @samp{:} is invalid as a file character in file names
15678 on your system (you OS/2 user you), you could say something like:
15681 (setq nnheader-file-name-translation-alist
15685 In fact, this is the default value for this variable on OS/2 and MS
15686 Windows (phooey) systems.
15688 @item gnus-hidden-properties
15689 @vindex gnus-hidden-properties
15690 This is a list of properties to use to hide ``invisible'' text. It is
15691 @code{(invisible t intangible t)} by default on most systems, which
15692 makes invisible text invisible and intangible.
15694 @item gnus-parse-headers-hook
15695 @vindex gnus-parse-headers-hook
15696 A hook called before parsing headers. It can be used, for instance, to
15697 gather statistics on the headers fetched, or perhaps you'd like to prune
15698 some headers. I don't see why you'd want that, though.
15700 @item gnus-shell-command-separator
15701 @vindex gnus-shell-command-separator
15702 String used to separate two shell commands. The default is @samp{;}.
15711 Well, that's the manual---you can get on with your life now. Keep in
15712 touch. Say hello to your cats from me.
15714 My @strong{ghod}---I just can't stand goodbyes. Sniffle.
15716 Ol' Charles Reznikoff said it pretty well, so I leave the floor to him:
15722 Not because of victories @*
15725 but for the common sunshine,@*
15727 the largess of the spring.
15731 but for the day's work done@*
15732 as well as I was able;@*
15733 not for a seat upon the dais@*
15734 but at the common table.@*
15739 @chapter Appendices
15742 * History:: How Gnus got where it is today.
15743 * Terminology:: We use really difficult, like, words here.
15744 * Customization:: Tailoring Gnus to your needs.
15745 * Troubleshooting:: What you might try if things do not work.
15746 * A Programmers Guide to Gnus:: Rilly, rilly technical stuff.
15747 * Emacs for Heathens:: A short introduction to Emacsian terms.
15748 * Frequently Asked Questions:: A question-and-answer session.
15756 @sc{gnus} was written by Masanobu @sc{Umeda}. When autumn crept up in
15757 '94, Lars Magne Ingebrigtsen grew bored and decided to rewrite Gnus.
15759 If you want to investigate the person responsible for this outrage, you
15760 can point your (feh!) web browser to
15761 @file{http://www.stud.ifi.uio.no/~larsi/}. This is also the primary
15762 distribution point for the new and spiffy versions of Gnus, and is known
15763 as The Site That Destroys Newsrcs And Drives People Mad.
15765 During the first extended alpha period of development, the new Gnus was
15766 called ``(ding) Gnus''. @dfn{(ding)} is, of course, short for
15767 @dfn{ding is not Gnus}, which is a total and utter lie, but who cares?
15768 (Besides, the ``Gnus'' in this abbreviation should probably be
15769 pronounced ``news'' as @sc{Umeda} intended, which makes it a more
15770 appropriate name, don't you think?)
15772 In any case, after spending all that energy on coming up with a new and
15773 spunky name, we decided that the name was @emph{too} spunky, so we
15774 renamed it back again to ``Gnus''. But in mixed case. ``Gnus'' vs.
15775 ``@sc{gnus}''. New vs. old.
15777 The first ``proper'' release of Gnus 5 was done in November 1995 when it
15778 was included in the Emacs 19.30 distribution (132 (ding) Gnus releases
15779 plus 15 Gnus 5.0 releases).
15781 In May 1996 the next Gnus generation (aka. ``September Gnus'' (after 99
15782 releases)) was released under the name ``Gnus 5.2'' (40 releases).
15784 On July 28th 1996 work on Red Gnus was begun, and it was released on
15785 January 25th 1997 (after 84 releases) as ``Gnus 5.4'' (67 releases).
15787 On September 13th 1997, Quassia Gnus was started and lasted 37
15788 releases. If was released as ``Gnus 5.6 on March 8th 1998.
15790 If you happen upon a version of Gnus that has a prefixed name --
15791 ``(ding) Gnus'', ``September Gnus'', ``Red Gnus'', ``Quassia Gnus'' --
15792 don't panic. Don't let it know that you're frightened. Back away.
15793 Slowly. Whatever you do, don't run. Walk away, calmly, until you're
15794 out of its reach. Find a proper released version of Gnus and snuggle up
15798 * Why?:: What's the point of Gnus?
15799 * Compatibility:: Just how compatible is Gnus with @sc{gnus}?
15800 * Conformity:: Gnus tries to conform to all standards.
15801 * Emacsen:: Gnus can be run on a few modern Emacsen.
15802 * Contributors:: Oodles of people.
15803 * New Features:: Pointers to some of the new stuff in Gnus.
15804 * Newest Features:: Features so new that they haven't been written yet.
15811 What's the point of Gnus?
15813 I want to provide a ``rad'', ``happening'', ``way cool'' and ``hep''
15814 newsreader, that lets you do anything you can think of. That was my
15815 original motivation, but while working on Gnus, it has become clear to
15816 me that this generation of newsreaders really belong in the stone age.
15817 Newsreaders haven't developed much since the infancy of the net. If the
15818 volume continues to rise with the current rate of increase, all current
15819 newsreaders will be pretty much useless. How do you deal with
15820 newsgroups that have thousands of new articles each day? How do you
15821 keep track of millions of people who post?
15823 Gnus offers no real solutions to these questions, but I would very much
15824 like to see Gnus being used as a testing ground for new methods of
15825 reading and fetching news. Expanding on @sc{Umeda}-san's wise decision
15826 to separate the newsreader from the backends, Gnus now offers a simple
15827 interface for anybody who wants to write new backends for fetching mail
15828 and news from different sources. I have added hooks for customizations
15829 everywhere I could imagine it being useful. By doing so, I'm inviting
15830 every one of you to explore and invent.
15832 May Gnus never be complete. @kbd{C-u 100 M-x all-hail-emacs} and
15833 @kbd{C-u 100 M-x all-hail-xemacs}.
15836 @node Compatibility
15837 @subsection Compatibility
15839 @cindex compatibility
15840 Gnus was designed to be fully compatible with @sc{gnus}. Almost all key
15841 bindings have been kept. More key bindings have been added, of course,
15842 but only in one or two obscure cases have old bindings been changed.
15847 @center In a cloud bones of steel.
15851 All commands have kept their names. Some internal functions have changed
15854 The @code{gnus-uu} package has changed drastically. @xref{Decoding
15857 One major compatibility question is the presence of several summary
15858 buffers. All variables relevant while reading a group are
15859 buffer-local to the summary buffer they belong in. Although many
15860 important variables have their values copied into their global
15861 counterparts whenever a command is executed in the summary buffer, this
15862 change might lead to incorrect values being used unless you are careful.
15864 All code that relies on knowledge of @sc{gnus} internals will probably
15865 fail. To take two examples: Sorting @code{gnus-newsrc-alist} (or
15866 changing it in any way, as a matter of fact) is strictly verboten. Gnus
15867 maintains a hash table that points to the entries in this alist (which
15868 speeds up many functions), and changing the alist directly will lead to
15872 @cindex highlighting
15873 Old hilit19 code does not work at all. In fact, you should probably
15874 remove all hilit code from all Gnus hooks
15875 (@code{gnus-group-prepare-hook} and @code{gnus-summary-prepare-hook}).
15876 Gnus provides various integrated functions for highlighting. These are
15877 faster and more accurate. To make life easier for everybody, Gnus will
15878 by default remove all hilit calls from all hilit hooks. Uncleanliness!
15881 Packages like @code{expire-kill} will no longer work. As a matter of
15882 fact, you should probably remove all old @sc{gnus} packages (and other
15883 code) when you start using Gnus. More likely than not, Gnus already
15884 does what you have written code to make @sc{gnus} do. (Snicker.)
15886 Even though old methods of doing things are still supported, only the
15887 new methods are documented in this manual. If you detect a new method of
15888 doing something while reading this manual, that does not mean you have
15889 to stop doing it the old way.
15891 Gnus understands all @sc{gnus} startup files.
15893 @kindex M-x gnus-bug
15895 @cindex reporting bugs
15897 Overall, a casual user who hasn't written much code that depends on
15898 @sc{gnus} internals should suffer no problems. If problems occur,
15899 please let me know by issuing that magic command @kbd{M-x gnus-bug}.
15901 @vindex gnus-bug-create-help-buffer
15902 If you are in the habit of sending bug reports @emph{very} often, you
15903 may find the helpful help buffer annoying after a while. If so, set
15904 @code{gnus-bug-create-help-buffer} to @code{nil} to avoid having it pop
15909 @subsection Conformity
15911 No rebels without a clue here, ma'am. We conform to all standards known
15912 to (wo)man. Except for those standards and/or conventions we disagree
15919 There are no known breaches of this standard.
15923 There are no known breaches of this standard, either.
15925 @item Son-of-RFC 1036
15926 @cindex Son-of-RFC 1036
15927 We do have some breaches to this one.
15932 Gnus does not yet fully handle MIME, and this standard-to-be seems to
15933 think that MIME is the bees' knees, so we have major breakage here.
15936 This is considered to be a ``vanity header'', while I consider it to be
15937 consumer information. After seeing so many badly formatted articles
15938 coming from @code{tin} and @code{Netscape} I know not to use either of
15939 those for posting articles. I would not have known that if it wasn't
15940 for the @code{X-Newsreader} header.
15945 USEFOR is an IETF working group writing a successor to RFC 1036, based
15946 on Son-of-RFC 1036. They have produced a number of drafts proposing
15947 various changes to the format of news articles. The Gnus towers will
15948 look into implementing the changes when the draft is accepted as an RFC.
15952 If you ever notice Gnus acting non-compliant with regards to the texts
15953 mentioned above, don't hesitate to drop a note to Gnus Towers and let us
15958 @subsection Emacsen
15964 Gnus should work on :
15972 XEmacs 20.4 and up.
15976 Gnus will absolutely not work on any Emacsen older than that. Not
15977 reliably, at least.
15979 There are some vague differences between Gnus on the various
15980 platforms---XEmacs features more graphics (a logo and a toolbar)---but
15981 other than that, things should look pretty much the same under all
15986 @subsection Contributors
15987 @cindex contributors
15989 The new Gnus version couldn't have been done without the help of all the
15990 people on the (ding) mailing list. Every day for over a year I have
15991 gotten billions of nice bug reports from them, filling me with joy,
15992 every single one of them. Smooches. The people on the list have been
15993 tried beyond endurance, what with my ``oh, that's a neat idea <type
15994 type>, yup, I'll release it right away <ship off> no wait, that doesn't
15995 work at all <type type>, yup, I'll ship that one off right away <ship
15996 off> no, wait, that absolutely does not work'' policy for releases.
15997 Micro$oft---bah. Amateurs. I'm @emph{much} worse. (Or is that
15998 ``worser''? ``much worser''? ``worsest''?)
16000 I would like to take this opportunity to thank the Academy for... oops,
16006 Masanobu @sc{Umeda}---the writer of the original @sc{gnus}.
16009 Per Abrahamsen---custom, scoring, highlighting and @sc{soup} code (as
16010 well as numerous other things).
16013 Luis Fernandes---design and graphics.
16016 Erik Naggum---help, ideas, support, code and stuff.
16019 Wes Hardaker---@file{gnus-picon.el} and the manual section on
16020 @dfn{picons} (@pxref{Picons}).
16023 Kim-Minh Kaplan---further work on the picon code.
16026 Brad Miller---@file{gnus-gl.el} and the GroupLens manual section
16027 (@pxref{GroupLens}).
16030 Sudish Joseph---innumerable bug fixes.
16033 Ilja Weis---@file{gnus-topic.el}.
16036 Steven L. Baur---lots and lots and lots of bugs detections and fixes.
16039 Vladimir Alexiev---the refcard and reference booklets.
16042 Felix Lee & Jamie Zawinski---I stole some pieces from the XGnus
16043 distribution by Felix Lee and JWZ.
16046 Scott Byer---@file{nnfolder.el} enhancements & rewrite.
16049 Peter Mutsaers---orphan article scoring code.
16052 Ken Raeburn---POP mail support.
16055 Hallvard B Furuseth---various bits and pieces, especially dealing with
16059 Brian Edmonds---@file{gnus-bbdb.el}.
16062 David Moore---rewrite of @file{nnvirtual.el} and many other things.
16065 Kevin Davidson---came up with the name @dfn{ding}, so blame him.
16068 François Pinard---many, many interesting and thorough bug reports, as
16069 well as autoconf support.
16073 This manual was proof-read by Adrian Aichner, with Ricardo Nassif, Mark
16074 Borges, and Jost Krieger proof-reading parts of the manual.
16076 The following people have contributed many patches and suggestions:
16085 Jason L. Tibbitts, III,
16089 Also thanks to the following for patches and stuff:
16111 Massimo Campostrini,
16119 Geoffrey T. Dairiki,
16125 Michael Welsh Duggan,
16128 Enami Tsugutomo, @c Enami
16132 Nelson Jose dos Santos Ferreira,
16139 Arne Georg Gleditsch,
16141 Michelangelo Grigni,
16144 Kenichi Handa, @c Handa
16146 Yoshiki Hayashi, @c ?
16148 Hisashige Kenji, @c Hisashige
16153 François Felix Ingrand,
16154 Ishikawa Ichiro, @c Ishikawa
16156 Iwamuro Motonori, @c Iwamuro
16165 Peter Skov Knudsen,
16166 Shuhei Kobayashi, @c Kobayashi
16167 Koseki Yoshinori, @c Koseki
16168 Thor Kristoffersen,
16171 Seokchan Lee, @c Lee
16188 Morioka Tomohiko, @c Morioka
16189 Erik Toubro Nielsen,
16196 Masaharu Onishi, @c Onishi
16200 Jens-Ulrik Holger Petersen,
16203 John McClary Prevost,
16209 Lars Balker Rasmussen,
16214 Christian von Roques,
16216 Wolfgang Rupprecht,
16223 Philippe Schnoebelen,
16225 Randal L. Schwartz,
16254 Katsumi Yamaoka, @c Yamaoka
16256 Shenghuo Zhu. @c Zhu
16258 For a full overview of what each person has done, the ChangeLogs
16259 included in the Gnus alpha distributions should give ample reading
16260 (550kB and counting).
16262 Apologies to everybody that I've forgotten, of which there are many, I'm
16265 Gee, that's quite a list of people. I guess that must mean that there
16266 actually are people who are using Gnus. Who'd'a thunk it!
16270 @subsection New Features
16271 @cindex new features
16274 * ding Gnus:: New things in Gnus 5.0/5.1, the first new Gnus.
16275 * September Gnus:: The Thing Formally Known As Gnus 5.3/5.3.
16276 * Red Gnus:: Third time best---Gnus 5.4/5.5.
16277 * Quassia Gnus:: Two times two is four, or Gnus 5.6/5.7.
16280 These lists are, of course, just @emph{short} overviews of the
16281 @emph{most} important new features. No, really. There are tons more.
16282 Yes, we have feeping creaturism in full effect.
16286 @subsubsection (ding) Gnus
16288 New features in Gnus 5.0/5.1:
16293 The look of all buffers can be changed by setting format-like variables
16294 (@pxref{Group Buffer Format} and @pxref{Summary Buffer Format}).
16297 Local spool and several @sc{nntp} servers can be used at once
16298 (@pxref{Select Methods}).
16301 You can combine groups into virtual groups (@pxref{Virtual Groups}).
16304 You can read a number of different mail formats (@pxref{Getting Mail}).
16305 All the mail backends implement a convenient mail expiry scheme
16306 (@pxref{Expiring Mail}).
16309 Gnus can use various strategies for gathering threads that have lost
16310 their roots (thereby gathering loose sub-threads into one thread) or it
16311 can go back and retrieve enough headers to build a complete thread
16312 (@pxref{Customizing Threading}).
16315 Killed groups can be displayed in the group buffer, and you can read
16316 them as well (@pxref{Listing Groups}).
16319 Gnus can do partial group updates---you do not have to retrieve the
16320 entire active file just to check for new articles in a few groups
16321 (@pxref{The Active File}).
16324 Gnus implements a sliding scale of subscribedness to groups
16325 (@pxref{Group Levels}).
16328 You can score articles according to any number of criteria
16329 (@pxref{Scoring}). You can even get Gnus to find out how to score
16330 articles for you (@pxref{Adaptive Scoring}).
16333 Gnus maintains a dribble buffer that is auto-saved the normal Emacs
16334 manner, so it should be difficult to lose much data on what you have
16335 read if your machine should go down (@pxref{Auto Save}).
16338 Gnus now has its own startup file (@file{.gnus}) to avoid cluttering up
16339 the @file{.emacs} file.
16342 You can set the process mark on both groups and articles and perform
16343 operations on all the marked items (@pxref{Process/Prefix}).
16346 You can grep through a subset of groups and create a group from the
16347 results (@pxref{Kibozed Groups}).
16350 You can list subsets of groups according to, well, anything
16351 (@pxref{Listing Groups}).
16354 You can browse foreign servers and subscribe to groups from those
16355 servers (@pxref{Browse Foreign Server}).
16358 Gnus can fetch articles, asynchronously, on a second connection to the
16359 server (@pxref{Asynchronous Fetching}).
16362 You can cache articles locally (@pxref{Article Caching}).
16365 The uudecode functions have been expanded and generalized
16366 (@pxref{Decoding Articles}).
16369 You can still post uuencoded articles, which was a little-known feature
16370 of @sc{gnus}' past (@pxref{Uuencoding and Posting}).
16373 Fetching parents (and other articles) now actually works without
16374 glitches (@pxref{Finding the Parent}).
16377 Gnus can fetch FAQs and group descriptions (@pxref{Group Information}).
16380 Digests (and other files) can be used as the basis for groups
16381 (@pxref{Document Groups}).
16384 Articles can be highlighted and customized (@pxref{Customizing
16388 URLs and other external references can be buttonized (@pxref{Article
16392 You can do lots of strange stuff with the Gnus window & frame
16393 configuration (@pxref{Windows Configuration}).
16396 You can click on buttons instead of using the keyboard
16402 @node September Gnus
16403 @subsubsection September Gnus
16407 \gnusfig{-28cm}{0cm}{\epsfig{figure=tmp/september.ps,height=20cm}}
16411 New features in Gnus 5.2/5.3:
16416 A new message composition mode is used. All old customization variables
16417 for @code{mail-mode}, @code{rnews-reply-mode} and @code{gnus-msg} are
16421 Gnus is now able to generate @dfn{sparse} threads---threads where
16422 missing articles are represented by empty nodes (@pxref{Customizing
16426 (setq gnus-build-sparse-threads 'some)
16430 Outgoing articles are stored on a special archive server
16431 (@pxref{Archived Messages}).
16434 Partial thread regeneration now happens when articles are
16438 Gnus can make use of GroupLens predictions (@pxref{GroupLens}).
16441 Picons (personal icons) can be displayed under XEmacs (@pxref{Picons}).
16444 A @code{trn}-like tree buffer can be displayed (@pxref{Tree Display}).
16447 (setq gnus-use-trees t)
16451 An @code{nn}-like pick-and-read minor mode is available for the summary
16452 buffers (@pxref{Pick and Read}).
16455 (add-hook 'gnus-summary-mode-hook 'gnus-pick-mode)
16459 In binary groups you can use a special binary minor mode (@pxref{Binary
16463 Groups can be grouped in a folding topic hierarchy (@pxref{Group
16467 (add-hook 'gnus-group-mode-hook 'gnus-topic-mode)
16471 Gnus can re-send and bounce mail (@pxref{Summary Mail Commands}).
16474 Groups can now have a score, and bubbling based on entry frequency
16475 is possible (@pxref{Group Score}).
16478 (add-hook 'gnus-summary-exit-hook 'gnus-summary-bubble-group)
16482 Groups can be process-marked, and commands can be performed on
16483 groups of groups (@pxref{Marking Groups}).
16486 Caching is possible in virtual groups.
16489 @code{nndoc} now understands all kinds of digests, mail boxes, rnews
16490 news batches, ClariNet briefs collections, and just about everything
16491 else (@pxref{Document Groups}).
16494 Gnus has a new backend (@code{nnsoup}) to create/read SOUP packets
16498 The Gnus cache is much faster.
16501 Groups can be sorted according to many criteria (@pxref{Sorting
16505 New group parameters have been introduced to set list-addresses and
16506 expiry times (@pxref{Group Parameters}).
16509 All formatting specs allow specifying faces to be used
16510 (@pxref{Formatting Fonts}).
16513 There are several more commands for setting/removing/acting on process
16514 marked articles on the @kbd{M P} submap (@pxref{Setting Process Marks}).
16517 The summary buffer can be limited to show parts of the available
16518 articles based on a wide range of criteria. These commands have been
16519 bound to keys on the @kbd{/} submap (@pxref{Limiting}).
16522 Articles can be made persistent with the @kbd{*} command
16523 (@pxref{Persistent Articles}).
16526 All functions for hiding article elements are now toggles.
16529 Article headers can be buttonized (@pxref{Article Washing}).
16532 (add-hook 'gnus-article-display-hook
16533 'gnus-article-add-buttons-to-head)
16537 All mail backends support fetching articles by @code{Message-ID}.
16540 Duplicate mail can now be treated properly (@pxref{Duplicates}).
16543 All summary mode commands are available directly from the article
16544 buffer (@pxref{Article Keymap}).
16547 Frames can be part of @code{gnus-buffer-configuration} (@pxref{Windows
16551 Mail can be re-scanned by a daemonic process (@pxref{Daemons}).
16554 \marginpar[\mbox{}\hfill\epsfig{figure=tmp/fseptember.ps,height=5cm}]{\epsfig{figure=tmp/fseptember.ps,height=5cm}}
16559 Gnus can make use of NoCeM files to weed out spam (@pxref{NoCeM}).
16562 (setq gnus-use-nocem t)
16566 Groups can be made permanently visible (@pxref{Listing Groups}).
16569 (setq gnus-permanently-visible-groups "^nnml:")
16573 Many new hooks have been introduced to make customizing easier.
16576 Gnus respects the @code{Mail-Copies-To} header.
16579 Threads can be gathered by looking at the @code{References} header
16580 (@pxref{Customizing Threading}).
16583 (setq gnus-summary-thread-gathering-function
16584 'gnus-gather-threads-by-references)
16588 Read articles can be stored in a special backlog buffer to avoid
16589 refetching (@pxref{Article Backlog}).
16592 (setq gnus-keep-backlog 50)
16596 A clean copy of the current article is always stored in a separate
16597 buffer to allow easier treatment.
16600 Gnus can suggest where to save articles (@pxref{Saving Articles}).
16603 Gnus doesn't have to do as much prompting when saving (@pxref{Saving
16607 (setq gnus-prompt-before-saving t)
16611 @code{gnus-uu} can view decoded files asynchronously while fetching
16612 articles (@pxref{Other Decode Variables}).
16615 (setq gnus-uu-grabbed-file-functions 'gnus-uu-grab-view)
16619 Filling in the article buffer now works properly on cited text
16620 (@pxref{Article Washing}).
16623 Hiding cited text adds buttons to toggle hiding, and how much
16624 cited text to hide is now customizable (@pxref{Article Hiding}).
16627 (setq gnus-cited-lines-visible 2)
16631 Boring headers can be hidden (@pxref{Article Hiding}).
16634 (add-hook 'gnus-article-display-hook
16635 'gnus-article-hide-boring-headers t)
16639 Default scoring values can now be set from the menu bar.
16642 Further syntax checking of outgoing articles have been added.
16648 @subsubsection Red Gnus
16650 New features in Gnus 5.4/5.5:
16654 \gnusfig{-5.5cm}{-4cm}{\epsfig{figure=tmp/red.ps,height=20cm}}
16661 @file{nntp.el} has been totally rewritten in an asynchronous fashion.
16664 Article prefetching functionality has been moved up into
16665 Gnus (@pxref{Asynchronous Fetching}).
16668 Scoring can now be performed with logical operators like @code{and},
16669 @code{or}, @code{not}, and parent redirection (@pxref{Advanced
16673 Article washing status can be displayed in the
16674 article mode line (@pxref{Misc Article}).
16677 @file{gnus.el} has been split into many smaller files.
16680 Suppression of duplicate articles based on Message-ID can be done
16681 (@pxref{Duplicate Suppression}).
16684 (setq gnus-suppress-duplicates t)
16688 New variables for specifying what score and adapt files are to be
16689 considered home score and adapt files (@pxref{Home Score File}) have
16693 @code{nndoc} was rewritten to be easily extendable (@pxref{Document
16694 Server Internals}).
16697 Groups can inherit group parameters from parent topics (@pxref{Topic
16701 Article editing has been revamped and is now actually usable.
16704 Signatures can be recognized in more intelligent fashions
16705 (@pxref{Article Signature}).
16708 Summary pick mode has been made to look more @code{nn}-like. Line
16709 numbers are displayed and the @kbd{.} command can be used to pick
16710 articles (@code{Pick and Read}).
16713 Commands for moving the @file{.newsrc.eld} from one server to
16714 another have been added (@pxref{Changing Servers}).
16717 There's a way now to specify that ``uninteresting'' fields be suppressed
16718 when generating lines in buffers (@pxref{Advanced Formatting}).
16721 Several commands in the group buffer can be undone with @kbd{M-C-_}
16725 Scoring can be done on words using the new score type @code{w}
16726 (@pxref{Score File Format}).
16729 Adaptive scoring can be done on a Subject word-by-word basis
16730 (@pxref{Adaptive Scoring}).
16733 (setq gnus-use-adaptive-scoring '(word))
16737 Scores can be decayed (@pxref{Score Decays}).
16740 (setq gnus-decay-scores t)
16744 Scoring can be performed using a regexp on the Date header. The Date is
16745 normalized to compact ISO 8601 format first (@pxref{Score File Format}).
16748 A new command has been added to remove all data on articles from
16749 the native server (@pxref{Changing Servers}).
16752 A new command for reading collections of documents
16753 (@code{nndoc} with @code{nnvirtual} on top) has been added---@kbd{M-C-d}
16754 (@pxref{Really Various Summary Commands}).
16757 Process mark sets can be pushed and popped (@pxref{Setting Process
16761 A new mail-to-news backend makes it possible to post even when the NNTP
16762 server doesn't allow posting (@pxref{Mail-To-News Gateways}).
16765 A new backend for reading searches from Web search engines
16766 (@dfn{DejaNews}, @dfn{Alta Vista}, @dfn{InReference}) has been added
16767 (@pxref{Web Searches}).
16770 Groups inside topics can now be sorted using the standard sorting
16771 functions, and each topic can be sorted independently (@pxref{Topic
16775 Subsets of the groups can be sorted independently (@code{Sorting
16779 Cached articles can be pulled into the groups (@pxref{Summary Generation
16783 \marginpar[\mbox{}\hfill\epsfig{figure=tmp/fred.ps,width=3cm}]{\epsfig{figure=tmp/fred.ps,width=3cm}}
16788 Score files are now applied in a more reliable order (@pxref{Score
16792 Reports on where mail messages end up can be generated (@pxref{Splitting
16796 More hooks and functions have been added to remove junk from incoming
16797 mail before saving the mail (@pxref{Washing Mail}).
16800 Emphasized text can be properly fontisized:
16803 (add-hook 'gnus-article-display-hook
16804 'gnus-article-emphasize)
16811 @subsubsection Quassia Gnus
16813 New features in Gnus 5.6:
16818 New functionality for using Gnus as an offline newsreader has been
16819 added. A plethora of new commands and modes have been added. See
16820 @pxref{Gnus Unplugged} for the full story.
16823 The @code{nndraft} backend has returned, but works differently than
16824 before. All Message buffers are now also articles in the @code{nndraft}
16825 group, which is created automatically.
16828 @code{gnus-alter-header-function} can now be used to alter header
16832 @code{gnus-summary-goto-article} now accept Message-ID's.
16835 A new Message command for deleting text in the body of a message
16836 outside the region: @kbd{C-c C-v}.
16839 You can now post to component group in @code{nnvirtual} groups with
16843 @code{nntp-rlogin-program}---new variable to ease customization.
16846 @code{C-u C-c C-c} in @code{gnus-article-edit-mode} will now inhibit
16847 re-highlighting of the article buffer.
16850 New element in @code{gnus-boring-article-headers}---@code{long-to}.
16853 @kbd{M-i} symbolic prefix command. See the section "Symbolic
16854 Prefixes" in the Gnus manual for details.
16857 @kbd{L} and @kbd{I} in the summary buffer now take the symbolic prefix
16858 @kbd{a} to add the score rule to the "all.SCORE" file.
16861 @code{gnus-simplify-subject-functions} variable to allow greater
16862 control over simplification.
16865 @kbd{A T}---new command for fetching the current thread.
16868 @kbd{/ T}---new command for including the current thread in the
16872 @kbd{M-RET} is a new Message command for breaking cited text.
16875 @samp{\\1}-expressions are now valid in @code{nnmail-split-methods}.
16878 The @code{custom-face-lookup} function has been removed.
16879 If you used this function in your initialization files, you must
16880 rewrite them to use @code{face-spec-set} instead.
16883 Canceling now uses the current select method. Symbolic prefix
16884 @kbd{a} forces normal posting method.
16887 New command to translate M******** sm*rtq**t*s into proper
16891 For easier debugging of @code{nntp}, you can set
16892 @code{nntp-record-commands} to a non-@code{nil} value.
16895 @code{nntp} now uses @file{~/.authinfo}, a @file{.netrc}-like file, for
16896 controlling where and how to send @sc{authinfo} to @sc{nntp} servers.
16899 A command for editing group parameters from the summary buffer
16903 A history of where mails have been split is available.
16906 A new article date command has been added---@code{article-date-iso8601}.
16909 Subjects can be simplified when threading by setting
16910 @code{gnus-score-thread-simplify}.
16913 A new function for citing in Message has been
16914 added---@code{message-cite-original-without-signature}.
16917 @code{article-strip-all-blank-lines}---new article command.
16920 A new Message command to kill to the end of the article has
16924 A minimum adaptive score can be specified by using the
16925 @code{gnus-adaptive-word-minimum} variable.
16928 The "lapsed date" article header can be kept continually
16929 updated by the @code{gnus-start-date-timer} command.
16932 Web listserv archives can be read with the @code{nnlistserv} backend.
16935 Old dejanews archives can now be read by @code{nnweb}.
16940 @node Newest Features
16941 @subsection Newest Features
16944 Also known as the @dfn{todo list}. Sure to be implemented before the
16947 Be afraid. Be very afraid.
16949 (That a feature appears in this list doesn't necessarily mean that I've
16950 decided to actually implement it. It just means that I think it sounds
16953 (Yes, this is the actual, up-to-the-second todo list.)
16958 Native @sc{mime} support is something that should be done.
16961 Really do unbinhexing.
16964 I would like the zombie-page to contain an URL to the source of the
16965 latest version of gnus or some explanation on where to find it.
16968 A way to continue editing the latest Message composition.
16971 http://www.sonicnet.com/feature/ari3/
16974 facep is not declared.
16977 Include a section in the manual on why the number of articles
16978 isn't the same in the group buffer and on the SPC prompt.
16981 Interacting with rmail fcc isn't easy.
16986 <URL:http://www.falch.no/people/pepper/DSSSL-Lite/archives/>
16987 <URL:http://www.eit.com/software/hypermail/hypermail.html>
16988 <URL:http://homer.ncm.com/>
16989 <URL:http://www.yahoo.com/Computers_and_Internet/Internet/World_Wide_Web/HTML_Converters/>
16990 http://www.uwsg.indiana.edu/hypermail/linux/kernel/9610/index.html
16991 <URL:http://union.ncsa.uiuc.edu/HyperNews/get/www/html/converters.html>
16992 http://www.miranova.com/gnus-list/
16997 @samp{^-- } is made into - in LaTeX.
17000 gnus-kill is much slower than it was in GNUS 4.1.3.
17003 when expunging articles on low score, the sparse nodes keep hanging on?
17005 starting the first time seems to hang Gnus on some systems. Does
17006 NEWGROUPS answer too fast?
17008 nndir doesn't read gzipped files.
17010 FAQ doesn't have an up node?
17012 when moving mail from a procmail spool to the crash-box,
17013 the crash-box is only appropriate to one specific group.
17015 `t' `t' makes X-Faces disappear.
17017 nnmh-be-safe means that crossposted articles will
17018 be marked as unread.
17020 Orphan score entries don't show on "V t" score trace
17022 when clearing out data, the cache data should also be reset.
17024 rewrite gnus-summary-limit-children to be non-recursive
17025 to avoid exceeding lisp nesting on huge groups.
17027 expunged articles are counted when computing scores.
17029 implement gnus-batch-brew-soup
17031 ticked articles aren't easy to read in pick mode -- `n' and
17032 stuff just skips past them. Read articles are the same.
17034 topics that contain just groups with ticked
17035 articles aren't displayed.
17037 nndoc should always allocate unique Message-IDs.
17039 If there are mail groups the first time you use Gnus, Gnus'll
17040 make the mail groups killed.
17042 no "no news is good news" when using topics.
17044 when doing crosspost marking, the cache has to be consulted
17045 and articles have to be removed.
17047 nnweb should fetch complete articles when they are split into several
17050 scoring on head immediate doesn't work.
17052 finding short score file names takes forever.
17054 canceling articles in foreign groups.
17056 nntp-open-rlogin no longer works.
17058 C-u C-x C-s (Summary) switches to the group buffer.
17060 move nnmail-split-history out to the backends.
17062 nnweb doesn't work properly.
17064 using a virtual server name as `gnus-select-method' doesn't work?
17066 when killing/yanking a group from one topic to another in a slave, the
17067 master will yank it first to one topic and then add it to another.
17071 warn user about `=' redirection of a group in the active file?
17073 really unbinhex binhex files.
17075 take over the XEmacs menubar and offer a toggle between the XEmacs
17076 bar and the Gnus bar.
17079 push active file and NOV file parsing down into C code.
17080 `(canonize-message-id id)'
17081 `(mail-parent-message-id references n)'
17082 `(parse-news-nov-line &optional dependency-hashtb)'
17083 `(parse-news-nov-region beg end &optional dependency-hashtb fullp)'
17084 `(parse-news-active-region beg end hashtb)'
17089 nnml .overview directory with splits.
17093 postponed commands.
17095 the selected article show have its Subject displayed in its summary line.
17097 when entering groups, get the real number of unread articles from
17100 sort after gathering threads -- make false roots have the
17101 headers of the oldest orphan with a 0 article number?
17103 nndoc groups should inherit the score files of their parents? Also
17104 inherit copy prompts and save files.
17106 command to start up Gnus (if not running) and enter a mail mode buffer.
17108 allow editing the group description from the group buffer
17109 for backends that support that.
17111 gnus-hide,show-all-topics
17113 groups and sub-topics should be allowed to mingle inside each topic,
17114 and not just list all subtopics at the end.
17116 a command to remove all read articles that are not needed to connect
17117 threads -- `gnus-summary-limit-to-sparse-unread'?
17119 a variable to turn off limiting/cutting of threads in the tree buffer.
17121 a variable to limit how many files are uudecoded.
17123 add zombie groups to a special "New Groups" topic.
17125 server mode command: close/open all connections
17127 put a file date in gnus-score-alist and check whether the file
17128 has been changed before using it.
17130 on exit from a digest group, go to the next article in the parent group.
17132 hide (sub)threads with low score.
17134 when expiring, remove all marks from expired articles.
17136 gnus-summary-limit-to-body
17138 a regexp alist that says what level groups are to be subscribed
17139 on. Eg. -- `(("nnml:" . 1))'.
17141 easier interface to nnkiboze to create ephemeral groups that
17142 contain groups that match a regexp.
17144 allow newlines in <URL:> urls, but remove them before using
17147 If there is no From line, the mail backends should fudge one from the
17150 fuzzy simplifying should strip all non-alpha-numerical info
17151 from subject lines.
17153 gnus-soup-brew-soup-with-high-scores.
17155 nntp-ping-before-connect
17157 command to check whether NOV is evil. "list overview.fmt".
17159 when entering a group, Gnus should look through the score
17160 files very early for `local' atoms and set those local variables.
17162 message annotations.
17164 topics are always yanked before groups, and that's not good.
17166 (set-extent-property extent 'help-echo "String to display in minibuf")
17167 to display help in the minibuffer on buttons under XEmacs.
17169 allow group line format spec to say how many articles there
17174 support qmail maildir spools
17176 `run-with-idle-timer' in gnus-demon.
17178 stop using invisible text properties and start using overlays instead
17180 C-c C-f C-e to add an Expires header.
17182 go from one group to the next; everything is expunged; go to the
17183 next group instead of going to the group buffer.
17185 gnus-renumber-cache -- to renumber the cache using "low" numbers.
17187 record topic changes in the dribble buffer.
17189 `nnfolder-generate-active-file' should look at the folders it
17190 finds and generate proper active ranges.
17192 nneething-look-in-files-for-article-heads variable to control
17193 whether nneething should sniff all files in the directories.
17195 gnus-fetch-article -- start Gnus, enter group, display article
17197 gnus-dont-move-articles-to-same-group variable when respooling.
17199 when messages are crossposted between several auto-expirable groups,
17200 articles aren't properly marked as expirable.
17202 nneething should allow deletion/moving.
17204 TAB on the last button should go to the first button.
17206 if the car of an element in `mail-split-methods' is a function,
17207 and the function returns non-nil, use that as the name of the group(s) to
17210 command for listing all score files that have been applied.
17212 a command in the article buffer to return to `summary' config.
17214 `gnus-always-post-using-current-server' -- variable to override
17215 `C-c C-c' when posting.
17217 nnmail-group-spool-alist -- says where each group should use
17220 when an article is crossposted to an auto-expirable group, the article
17221 should be marker as expirable.
17223 article mode command/menu for "send region as URL to browser".
17225 on errors, jump to info nodes that explain the error. For instance,
17226 on invalid From headers, or on error messages from the nntp server.
17228 when gathering threads, make the article that has no "Re: " the parent.
17229 Also consult Date headers.
17231 a token in splits to call shrink-window-if-larger-than-buffer
17233 `1 0 A M' to do matches on the active hashtb.
17235 duplicates -- command to remove Gnus-Warning header, use the read
17236 Message-ID, delete the "original".
17238 when replying to several messages at once, put the "other" message-ids
17239 into a See-Also header.
17241 support setext: URL:http://www.bsdi.com/setext/
17243 support ProleText: <URL:http://proletext.clari.net/prole/proletext.html>
17245 when browsing a foreign server, the groups that are already subscribed
17246 should be listed as such and not as "K".
17248 generate font names dynamically.
17250 score file mode auto-alist.
17252 allow nndoc to change/add/delete things from documents. Implement
17253 methods for each format for adding an article to the document.
17255 `gnus-fetch-old-headers' `all' value to incorporate
17256 absolutely all headers there is.
17258 function like `|', but concatenate all marked articles
17259 and pipe them to the process.
17261 cache the list of killed (or active) groups in a separate file. Update
17262 the file whenever we read the active file or the list
17263 of killed groups in the .eld file reaches a certain length.
17265 function for starting to edit a file to put into
17266 the current mail group.
17268 score-find-trace should display the total score of the article.
17270 "ghettozie" -- score on Xref header and nix it out after using it
17271 to avoid marking as read in other groups it has been crossposted to.
17273 look at procmail splitting. The backends should create
17274 the groups automatically if a spool file exists for that group.
17276 function for backends to register themselves with Gnus.
17278 when replying to several process-marked articles,
17279 have all the From end up in Cc headers? Variable to toggle.
17281 command to delete a crossposted mail article from all
17282 groups it has been mailed to.
17284 `B c' and `B m' should be crosspost aware.
17286 hide-pgp should also hide PGP public key blocks.
17288 Command in the group buffer to respool process-marked groups.
17290 `gnus-summary-find-matching' should accept
17291 pseudo-"headers" like "body", "head" and "all"
17293 When buttifying <URL: > things, all white space (including
17294 newlines) should be ignored.
17296 Process-marking all groups in a topic should process-mark
17297 groups in subtopics as well.
17299 Add non-native groups to the list of killed groups when killing them.
17301 nntp-suggest-kewl-config to probe the nntp server and suggest
17304 add edit and forward secondary marks.
17306 nnml shouldn't visit its .overview files.
17308 allow customizing sorting within gathered threads.
17310 `B q' shouldn't select the current article.
17312 nnmbox should support a newsgroups file for descriptions.
17314 allow fetching mail from several pop servers.
17316 Be able to specify whether the saving commands save the original
17317 or the formatted article.
17319 a command to reparent with the child process-marked (cf. `T ^'.).
17321 I think the possibility to send a password with nntp-open-rlogin
17322 should be a feature in Red Gnus.
17324 The `Z n' command should be possible to execute from a mouse click.
17326 more limiting functions -- date, etc.
17328 be able to limit on a random header; on body; using reverse matches.
17330 a group parameter (`absofucking-total-expiry') that will make Gnus expire
17331 even unread articles.
17333 a command to print the article buffer as postscript.
17335 variable to disable password fetching when opening by nntp-open-telnet.
17337 manual: more example servers -- nntp with rlogin, telnet
17339 checking for bogus groups should clean topic alists as well.
17341 canceling articles in foreign groups.
17343 article number in folded topics isn't properly updated by
17346 Movement in the group buffer to the next unread group should go to the
17347 next closed topic with unread messages if no group can be found.
17349 Extensive info pages generated on the fly with help everywhere --
17350 in the "*Gnus edit*" buffers, for instance.
17352 Topic movement commands -- like thread movement. Up, down, forward, next.
17354 a way to tick/mark as read Gcc'd articles.
17356 a way to say that all groups within a specific topic comes
17357 from a particular server? Hm.
17359 `gnus-article-fill-if-long-lines' -- a function to fill
17360 the article buffer if there are any looong lines there.
17362 `T h' should jump to the parent topic and fold it.
17364 a command to create an ephemeral nndoc group out of a file,
17365 and then splitting it/moving it to some other group/backend.
17367 a group parameter for nnkiboze groups that says that
17368 all kibozed articles should be entered into the cache.
17370 It should also probably be possible to delimit what
17371 `gnus-jog-cache' does -- for instance, work on just some groups, or on
17372 some levels, and entering just articles that have a score higher than
17375 nnfolder should append to the folder instead of re-writing
17376 the entire folder to disk when accepting new messages.
17378 allow all backends to do the proper thing with .gz files.
17380 a backend for reading collections of babyl files nnbabylfolder?
17382 a command for making the native groups into foreign groups.
17384 server mode command for clearing read marks from all groups
17387 when following up multiple articles, include all To, Cc, etc headers
17390 a command for deciding what the total score of the current
17391 thread is. Also a way to highlight based on this.
17393 command to show and edit group scores
17395 a gnus-tree-minimize-horizontal to minimize tree buffers
17398 command to generate nnml overview file for one group.
17400 `C-u C-u a' -- prompt for many crossposted groups.
17402 keep track of which mail groups have received new articles (in this session).
17403 Be able to generate a report and perhaps do some marking in the group
17406 gnus-build-sparse-threads to a number -- build only sparse threads
17407 that are of that length.
17409 have nnmh respect mh's unseen sequence in .mh_profile.
17411 cache the newsgroups descriptions locally.
17413 asynchronous posting under nntp.
17415 be able to control word adaptive scoring from the score files.
17417 a variable to make `C-c C-c' post using the "current" select method.
17419 `limit-exclude-low-scored-articles'.
17421 if `gnus-summary-show-thread' is a number, hide threads that have
17422 a score lower than this number.
17424 split newsgroup subscription variable up into "order" and "method".
17426 buttonize ange-ftp file names.
17428 a command to make a duplicate copy of the current article
17429 so that each copy can be edited separately.
17431 nnweb should allow fetching from the local nntp server.
17433 record the sorting done in the summary buffer so that
17434 it can be repeated when limiting/regenerating the buffer.
17436 nnml-generate-nov-databses should generate for
17439 when the user does commands in the group buffer, check
17440 the modification time of the .newsrc.eld file and use
17441 ask-user-about-supersession-threat. Also warn when trying
17442 to save .newsrc.eld and it has changed.
17444 M-g on a topic will display all groups with 0 articles in
17447 command to remove all topic stuff.
17449 allow exploding incoming digests when reading incoming mail
17450 and splitting the resulting digests.
17452 nnsoup shouldn't set the `message-' variables.
17454 command to nix out all nnoo state information.
17456 nnmail-process-alist that calls functions if group names
17457 matches an alist -- before saving.
17459 use buffer-invisibility-spec everywhere for hiding text.
17461 variable to activate each group before entering them
17462 to get the (new) number of articles. `gnus-activate-before-entering'.
17464 command to fetch a Message-ID from any buffer, even
17465 starting Gnus first if necessary.
17467 when posting and checking whether a group exists or not, just
17468 ask the nntp server instead of relying on the active hashtb.
17470 buttonize the output of `C-c C-a' in an apropos-like way.
17472 `G p' should understand process/prefix, and allow editing
17473 of several groups at once.
17475 command to create an ephemeral nnvirtual group that
17476 matches some regexp(s).
17478 nndoc should understand "Content-Type: message/rfc822" forwarded messages.
17480 it should be possible to score "thread" on the From header.
17482 hitting RET on a "gnus-uu-archive" pseudo article should unpack it.
17484 `B i' should display the article at once in the summary buffer.
17486 remove the "*" mark at once when unticking an article.
17488 `M-s' should highlight the matching text.
17490 when checking for duplicated mails, use Resent-Message-ID if present.
17492 killing and yanking groups in topics should be better. If killing one copy
17493 of a group that exists in multiple topics, only that copy should
17494 be removed. Yanking should insert the copy, and yanking topics
17495 should be possible to be interspersed with the other yankings.
17497 command for enter a group just to read the cached articles. A way to say
17498 "ignore the nntp connection; just read from the cache."
17500 `X u' should decode base64 articles.
17502 a way to hide all "inner" cited text, leaving just the most
17503 recently cited text.
17505 nnvirtual should be asynchronous.
17507 after editing an article, gnus-original-article-buffer should
17510 there should probably be a way to make Gnus not connect to the
17511 server and just read the articles in the server
17513 allow a `set-default' (or something) to change the default
17514 value of nnoo variables.
17516 a command to import group infos from a .newsrc.eld file.
17518 groups from secondary servers have the entire select method
17519 listed in each group info.
17521 a command for just switching from the summary buffer to the group
17524 a way to specify that some incoming mail washing functions
17525 should only be applied to some groups.
17527 Message `C-f C-t' should ask the user whether to heed
17528 mail-copies-to: never.
17530 new group parameter -- `post-to-server' that says to post
17531 using the current server. Also a variable to do the same.
17533 the slave dribble files should autosave to the slave file names.
17535 a group parameter that says what articles to display on group entry, based
17538 a way to visually distinguish slave Gnusae from masters. (Whip instead
17541 Use DJ Bernstein "From " quoting/dequoting, where applicable.
17543 Why is hide-citation-maybe and hide-citation different? Also
17546 group user-defined meta-parameters.
17550 From: John Griffith <griffith@@sfs.nphil.uni-tuebingen.de>
17552 I like the option for trying to retrieve the FAQ for a group and I was
17553 thinking it would be great if for those newsgroups that had archives
17554 you could also try to read the archive for that group. Part of the
17555 problem is that archives are spread all over the net, unlike FAQs.
17556 What would be best I suppose is to find the one closest to your site.
17558 In any case, there is a list of general news group archives at @*
17559 ftp://ftp.neosoft.com/pub/users/claird/news.lists/newsgroup_archives.html
17566 From: Jason L Tibbitts III <tibbs@@hpc.uh.edu>
17567 (add-hook 'gnus-select-group-hook
17569 (gnus-group-add-parameter group
17570 (cons 'gnus-group-date-last-entered (list (current-time-string))))))
17572 (defun gnus-user-format-function-d (headers)
17573 "Return the date the group was last read."
17574 (cond ((car (gnus-group-get-parameter gnus-tmp-group 'gnus-group-date-last-entered)))
17579 tanken var at når du bruker `gnus-startup-file' som prefix (FOO) til å lete
17580 opp en fil FOO-SERVER, FOO-SERVER.el, FOO-SERVER.eld, kan du la den være en
17581 liste hvor du bruker hvert element i listen som FOO, istedet. da kunne man
17582 hatt forskjellige serveres startup-filer forskjellige steder.
17586 LMI> Well, nnbabyl could alter the group info to heed labels like
17587 LMI> answered and read, I guess.
17589 It could also keep them updated (the same for the Status: header of
17592 They could be used like this:
17596 `M l <name> RET' add label <name> to current message.
17597 `M u <name> RET' remove label <name> from current message.
17598 `/ l <expr> RET' limit summary buffer according to <expr>.
17600 <expr> would be a boolean expression on the labels, e.g.
17602 `/ l bug & !fixed RET'
17605 would show all the messages which are labeled `bug' but not labeled
17608 One could also imagine the labels being used for highlighting, or
17609 affect the summary line format.
17613 Sender: abraham@@dina.kvl.dk
17615 I'd like a gnus-find-file which work like find file, except that it
17616 would recognize things that looks like messages or folders:
17618 - If it is a directory containing numbered files, create an nndir
17621 - For other directories, create a nneething summary buffer.
17623 - For files matching "\\`From ", create a nndoc/mbox summary.
17625 - For files matching "\\`BABYL OPTIONS:", create a nndoc/baby summary.
17627 - For files matching "\\`[^ \t\n]+:", create an *Article* buffer.
17629 - For other files, just find them normally.
17631 I'd like `nneething' to use this function, so it would work on a
17632 directory potentially containing mboxes or babyl files.
17635 Please send a mail to bwarsaw@@cnri.reston.va.us (Barry A. Warsaw) and
17636 tell him what you are doing.
17639 Currently, I get prompted:
17643 decend into sci.something ?
17647 The problem above is that since there is really only one subsection of
17648 science, shouldn't it prompt you for only descending sci.something? If
17649 there was a sci.somethingelse group or section, then it should prompt
17650 for sci? first the sci.something? then sci.somethingelse?...
17653 Ja, det burde være en måte å si slikt. Kanskje en ny variabel?
17654 `gnus-use-few-score-files'? SÃ¥ kunne score-regler legges til den
17655 "mest" lokale score-fila. F. eks. ville no-gruppene betjenes av
17656 "no.all.SCORE", osv.
17659 What i want is for Gnus to treat any sequence or combination of the following
17660 as a single spoiler warning and hide it all, replacing it with a "Next Page"
17666 more than n blank lines
17668 more than m identical lines
17669 (which should be replaced with button to show them)
17671 any whitespace surrounding any of the above
17675 Well, we could allow a new value to `gnus-thread-ignore-subject' --
17676 `spaces', or something. (We could even default to that.) And then
17677 subjects that differ in white space only could be considered the
17678 "same" subject for threading purposes.
17681 Modes to preprocess the contents (e.g. jka-compr) use the second form
17682 "(REGEXP FUNCTION NON-NIL)" while ordinary modes (e.g. tex) use the first
17683 form "(REGEXP . FUNCTION)", so you could use it to distinguish between
17684 those two types of modes. (auto-modes-alist, insert-file-contents-literally.)
17687 Under XEmacs -- do funny article marks:
17690 soup - bowl of soup
17691 score below - dim light bulb
17692 score over - bright light bulb
17695 Yes. I think the algorithm is as follows:
17700 show-list-of-articles-in-group
17701 if (key-pressed == SPACE)
17702 if (no-more-articles-in-group-to-select)
17703 if (articles-selected)
17704 start-reading-selected-articles;
17705 junk-unread-articles;
17710 else if (key-pressed = '.')
17711 if (consolidated-menus) # same as hide-thread in Gnus
17712 select-thread-under-cursor;
17714 select-article-under-cursor;
17718 if (key-pressed == SPACE)
17719 if (more-pages-in-article)
17721 else if (more-selected-articles-to-read)
17728 My precise need here would have been to limit files to Incoming*.
17729 One could think of some `nneething-only-files' variable, but I guess
17730 it would have been unacceptable if one was using many unrelated such
17733 A more useful approach would be to, in response to the `G D' prompt, be
17734 allowed to say something like: `~/.mail/Incoming*', somewhat limiting
17735 the top-level directory only (in case directories would be matched by
17736 the wildcard expression).
17739 It would be nice if it also handled
17741 <URL:news://sunsite.auc.dk/>
17743 which should correspond to `B nntp RET sunsite.auc.dk' in *Group*.
17748 Take a look at w3-menu.el in the Emacs-W3 distribution - this works out
17749 really well. Each menu is 'named' by a symbol that would be on a
17750 gnus-*-menus (where * would be whatever, but at least group, summary, and
17751 article versions) variable.
17753 So for gnus-summary-menus, I would set to '(sort mark dispose ...)
17755 A value of '1' would just put _all_ the menus in a single 'GNUS' menu in
17756 the main menubar. This approach works really well for Emacs-W3 and VM.
17760 nndoc should take care to create unique Message-IDs for all its
17763 gnus-score-followup-article only works when you have a summary buffer
17764 active. Make it work when posting from the group buffer as well.
17765 (message-sent-hook).
17767 rewrite gnus-demon to use run-with-idle-timers.
17770 * Enhancements to Gnus:
17774 * gnus-servers (gnus-start-server-buffer?)--enters Gnus and goes
17775 straight to the server buffer, without opening any connections to
17778 * gnus-server-read-server-newsrc--produces a buffer very similar to
17779 the group buffer, but with only groups from that server listed;
17780 quitting this buffer returns to the server buffer.
17783 add a command to check the integrity of an nnfolder folder --
17784 go through the article numbers and see that there are no duplicates,
17788 `unsmileyfy-buffer' to undo smileification.
17791 a command to give all relevant info on an article, including all
17795 when doing `-request-accept-article', the backends should do
17796 the nnmail duplicate checking.
17799 allow `message-signature-file' to be a function to return the
17800 value of the signature file.
17803 In addition, I would love it if I could configure message-tab so that it
17804 could call `bbdb-complete-name' in other headers. So, some sort of
17807 (setq message-tab-alist
17808 '((message-header-regexp message-expand-group)
17809 ("^\\(To\\|[cC]c\\|[bB]cc\\)" bbdb-complete-name)))
17811 then you could run the relevant function to complete the information in
17815 cache the newsgroups file locally to avoid reloading it all the time.
17818 a command to import a buffer into a group.
17821 nnweb should allow fetching by Message-ID from servers.
17824 point in the article buffer doesn't always go to the
17825 beginning of the buffer when selecting new articles.
17828 a command to process mark all unread articles.
17831 `gnus-gather-threads-by-references-and-subject' -- first
17832 do gathering by references, and then go through the dummy roots and
17833 do more gathering by subject.
17836 gnus-uu-mark-in-numerical-order -- process mark articles in
17837 article numerical order.
17840 (gnus-thread-total-score
17841 (gnus-id-to-thread (mail-header-id (gnus-summary-article-header))))
17845 sorting by score is wrong when using sparse threads.
17848 a command to fetch an arbitrary article -- without having to be
17849 in the summary buffer.
17852 a new nncvs backend. Each group would show an article, using
17853 version branches as threading, checkin date as the date, etc.
17856 http://www.dejanews.com/forms/dnsetfilter_exp.html ?
17857 This filter allows one to construct advance queries on the Dejanews
17858 database such as specifying start and end dates, subject, author,
17859 and/or newsgroup name.
17862 new Date header scoring type -- older, newer
17865 use the summary toolbar in the article buffer.
17868 a command to fetch all articles that are less than X days old.
17871 in pick mode, `q' should save the list of selected articles in the
17872 group info. The next time the group is selected, these articles
17873 will automatically get the process mark.
17876 Isn't it possible to (also?) allow M-^ to automatically try the
17877 default server if it fails on the current server? (controlled by a
17878 user variable, (nil, t, 'ask)).
17881 make it possible to cancel articles using the select method for the
17885 `gnus-summary-select-article-on-entry' or something. It'll default
17886 to t and will select whatever article decided by `gnus-auto-select-first'.
17889 a new variable to control which selection commands should be unselecting.
17890 `first', `best', `next', `prev', `next-unread', `prev-unread' are
17894 be able to select groups that have no articles in them
17895 to be able to post in them (using the current select method).
17898 be able to post via DejaNews.
17901 `x' should retain any sortings that have been performed.
17904 allow the user to specify the precedence of the secondary marks. Also
17905 allow them to be displayed separately.
17908 gnus-summary-save-in-pipe should concatenate the results from
17909 the processes when doing a process marked pipe.
17912 a new match type, like Followup, but which adds Thread matches on all
17913 articles that match a certain From header.
17916 a function that can be read from kill-emacs-query-functions to offer
17917 saving living summary buffers.
17920 a function for selecting a particular group which will contain
17921 the articles listed in a list of article numbers/id's.
17924 a battery of character translation functions to translate common
17925 Mac, MS (etc) characters into ISO 8859-1.
17928 (defun article-fix-m$word ()
17929 "Fix M$Word smartquotes in an article."
17932 (let ((buffer-read-only nil))
17933 (goto-char (point-min))
17934 (while (search-forward "\221" nil t)
17935 (replace-match "`" t t))
17936 (goto-char (point-min))
17937 (while (search-forward "\222" nil t)
17938 (replace-match "'" t t))
17939 (goto-char (point-min))
17940 (while (search-forward "\223" nil t)
17941 (replace-match "\"" t t))
17942 (goto-char (point-min))
17943 (while (search-forward "\224" nil t)
17944 (replace-match "\"" t t)))))
17949 (add-hook 'gnus-exit-query-functions
17951 (if (and (file-exists-p nnmail-spool-file)
17952 (> (nnheader-file-size nnmail-spool-file) 0))
17953 (yes-or-no-p "New mail has arrived. Quit Gnus anyways? ")
17954 (y-or-n-p "Are you sure you want to quit Gnus? "))))
17958 allow message-default-headers to be a function.
17961 new Date score match types -- < > = (etc) that take floating point
17962 numbers and match on the age of the article.
17966 > > > If so, I've got one gripe: It seems that when I fire up gnus 5.2.25
17967 > > > under xemacs-19.14, it's creating a new frame, but is erasing the
17968 > > > buffer in the frame that it was called from =:-O
17970 > > Hm. How do you start up Gnus? From the toolbar or with
17971 > > `M-x gnus-other-frame'?
17973 > I normally start it up from the toolbar; at
17974 > least that's the way I've caught it doing the
17979 all commands that react to the process mark should push
17980 the current process mark set onto the stack.
17983 gnus-article-hide-pgp
17984 Selv ville jeg nok ha valgt å slette den dersom teksten matcher
17986 "\\(This\s+\\)?[^ ]+ has been automatically signed by"
17988 og det er maks hundre tegn mellom match-end og ----linja. Men -det-
17989 er min type heuristikk og langt fra alles.
17992 `gnus-subscribe-sorted' -- insert new groups where they would have been
17993 sorted to if `gnus-group-sort-function' were run.
17996 gnus-(group,summary)-highlight should respect any `face' text props set
18000 use run-with-idle-timer for gnus-demon instead of the
18001 home-brewed stuff for better reliability.
18004 add a way to select which NoCeM type to apply -- spam, troll, etc.
18007 nndraft-request-group should tally autosave files.
18010 implement nntp-retry-on-break and nntp-command-timeout.
18013 gnus-article-highlight-limit that says when not to highlight (long)
18017 (nnoo-set SERVER VARIABLE VALUE)
18023 interrupitng agent fetching of articles should save articles.
18026 command to open a digest group, and copy all the articles there to the
18030 a variable to disable article body highlights if there's more than
18031 X characters in the body.
18034 handle 480/381 authinfo requests separately.
18037 include the texi/dir file in the distribution.
18040 format spec to "tab" to a position.
18043 Move all prompting to the new `M-n' default style.
18046 command to display all dormant articles.
18049 gnus-auto-select-next makeover -- list of things it should do.
18052 a score match type that adds scores matching on From if From has replied
18053 to something someone else has said.
18056 Read Netscape discussion groups:
18057 snews://secnews.netscape.com/netscape.communicator.unix
18060 One command to edit the original version if an article, and one to edit
18061 the displayed version.
18064 @kbd{T v} -- make all process-marked articles the children of the
18068 Switch from initial text to the new default text mechanism.
18071 How about making it possible to expire local articles? Will it be
18072 possible to make various constraints on when an article can be
18073 expired, e.g. (read), (age > 14 days), or the more interesting (read
18077 New limit command---limit to articles that have a certain string
18078 in the head or body.
18081 Allow breaking lengthy NNTP commands.
18084 gnus-article-highlight-limit, to disable highlighting in big articles.
18087 Editing an article should put the article to be edited
18088 in a special, unique buffer.
18091 A command to send a mail to the admin-address group param.
18094 A Date scoring type that will match if the article
18095 is less than a certain number of days old.
18098 New spec: %~(tab 56) to put point on column 56
18101 Allow Gnus Agent scoring to use normal score files.
18104 Rething the Agent active file thing. `M-g' doesn't update the active
18105 file, for instance.
18108 With dummy roots, `^' and then selecing the first article
18109 in any other dummy thread will make Gnus highlight the
18110 dummy root instead of the first article.
18113 Propagate all group properties (marks, article numbers, etc) up to the
18114 topics for displaying.
18117 `n' in the group buffer with topics should go to the next group
18118 with unread articles, even if that group is hidden in a topic.
18121 gnus-posting-styles doesn't work in drafts.
18124 gnus-summary-limit-include-cached is slow when there are
18125 many articles in the cache, since it regenerates big parts of the
18126 summary buffer for each article.
18129 Implement gnus-batch-brew-soup.
18132 Group parameters and summary commands for un/subscribing to mailing
18136 Introduce nnmail-home-directory.
18139 gnus-fetch-group and friends should exit Gnus when the user
18143 The jingle is only played on the second invocation of Gnus.
18146 gnus-ignored-mime-types to avoid seeing buttons for Vcards and the
18150 Boucing articles should do MIME.
18153 Solve the halting problem.
18162 @section The Manual
18166 This manual was generated from a TeXinfo file and then run through
18167 either @code{texi2dvi}
18169 or my own home-brewed TeXinfo to \LaTeX\ transformer,
18170 and then run through @code{latex} and @code{dvips}
18172 to get what you hold in your hands now.
18174 The following conventions have been used:
18179 This is a @samp{string}
18182 This is a @kbd{keystroke}
18185 This is a @file{file}
18188 This is a @code{symbol}
18192 So if I were to say ``set @code{flargnoze} to @samp{yes}'', that would
18196 (setq flargnoze "yes")
18199 If I say ``set @code{flumphel} to @code{yes}'', that would mean:
18202 (setq flumphel 'yes)
18205 @samp{yes} and @code{yes} are two @emph{very} different things---don't
18206 ever get them confused.
18210 Of course, everything in this manual is of vital interest, so you should
18211 read it all. Several times. However, if you feel like skimming the
18212 manual, look for that gnu head you should see in the margin over
18213 there---it means that what's being discussed is of more importance than
18214 the rest of the stuff. (On the other hand, if everything is infinitely
18215 important, how can anything be more important than that? Just one more
18216 of the mysteries of this world, I guess.)
18224 @section Terminology
18226 @cindex terminology
18231 This is what you are supposed to use this thing for---reading news.
18232 News is generally fetched from a nearby @sc{nntp} server, and is
18233 generally publicly available to everybody. If you post news, the entire
18234 world is likely to read just what you have written, and they'll all
18235 snigger mischievously. Behind your back.
18239 Everything that's delivered to you personally is mail. Some news/mail
18240 readers (like Gnus) blur the distinction between mail and news, but
18241 there is a difference. Mail is private. News is public. Mailing is
18242 not posting, and replying is not following up.
18246 Send a mail to the person who has written what you are reading.
18250 Post an article to the current newsgroup responding to the article you
18255 Gnus gets fed articles from a number of backends, both news and mail
18256 backends. Gnus does not handle the underlying media, so to speak---this
18257 is all done by the backends.
18261 Gnus will always use one method (and backend) as the @dfn{native}, or
18262 default, way of getting news.
18266 You can also have any number of foreign groups active at the same time.
18267 These are groups that use non-native non-secondary backends for getting
18272 Secondary backends are somewhere half-way between being native and being
18273 foreign, but they mostly act like they are native.
18277 A message that has been posted as news.
18280 @cindex mail message
18281 A message that has been mailed.
18285 A mail message or news article
18289 The top part of a message, where administrative information (etc.) is
18294 The rest of an article. Everything not in the head is in the
18299 A line from the head of an article.
18303 A collection of such lines, or a collection of heads. Or even a
18304 collection of @sc{nov} lines.
18308 When Gnus enters a group, it asks the backend for the headers of all
18309 unread articles in the group. Most servers support the News OverView
18310 format, which is more compact and much faster to read and parse than the
18311 normal @sc{head} format.
18315 Each group is subscribed at some @dfn{level} or other (1-9). The ones
18316 that have a lower level are ``more'' subscribed than the groups with a
18317 higher level. In fact, groups on levels 1-5 are considered
18318 @dfn{subscribed}; 6-7 are @dfn{unsubscribed}; 8 are @dfn{zombies}; and 9
18319 are @dfn{killed}. Commands for listing groups and scanning for new
18320 articles will all use the numeric prefix as @dfn{working level}.
18322 @item killed groups
18323 @cindex killed groups
18324 No information on killed groups is stored or updated, which makes killed
18325 groups much easier to handle than subscribed groups.
18327 @item zombie groups
18328 @cindex zombie groups
18329 Just like killed groups, only slightly less dead.
18332 @cindex active file
18333 The news server has to keep track of what articles it carries, and what
18334 groups exist. All this information in stored in the active file, which
18335 is rather large, as you might surmise.
18338 @cindex bogus groups
18339 A group that exists in the @file{.newsrc} file, but isn't known to the
18340 server (i.e., it isn't in the active file), is a @emph{bogus group}.
18341 This means that the group probably doesn't exist (any more).
18344 @cindex activating groups
18345 The act of asking the server for info on a group and computing the
18346 number of unread articles is called @dfn{activating the group}.
18347 Un-activated groups are listed with @samp{*} in the group buffer.
18351 A machine one can connect to and get news (or mail) from.
18353 @item select method
18354 @cindex select method
18355 A structure that specifies the backend, the server and the virtual
18358 @item virtual server
18359 @cindex virtual server
18360 A named select method. Since a select method defines all there is to
18361 know about connecting to a (physical) server, taking the thing as a
18362 whole is a virtual server.
18366 Taking a buffer and running it through a filter of some sort. The
18367 result will (more often than not) be cleaner and more pleasing than the
18370 @item ephemeral groups
18371 @cindex ephemeral groups
18372 Most groups store data on what articles you have read. @dfn{Ephemeral}
18373 groups are groups that will have no data stored---when you exit the
18374 group, it'll disappear into the aether.
18377 @cindex solid groups
18378 This is the opposite of ephemeral groups. All groups listed in the
18379 group buffer are solid groups.
18381 @item sparse articles
18382 @cindex sparse articles
18383 These are article placeholders shown in the summary buffer when
18384 @code{gnus-build-sparse-threads} has been switched on.
18388 To put responses to articles directly after the articles they respond
18389 to---in a hierarchical fashion.
18393 @cindex thread root
18394 The first article in a thread is the root. It is the ancestor of all
18395 articles in the thread.
18399 An article that has responses.
18403 An article that responds to a different article---its parent.
18407 A collection of messages in one file. The most common digest format is
18408 specified by RFC1153.
18414 @node Customization
18415 @section Customization
18416 @cindex general customization
18418 All variables are properly documented elsewhere in this manual. This
18419 section is designed to give general pointers on how to customize Gnus
18420 for some quite common situations.
18423 * Slow/Expensive Connection:: You run a local Emacs and get the news elsewhere.
18424 * Slow Terminal Connection:: You run a remote Emacs.
18425 * Little Disk Space:: You feel that having large setup files is icky.
18426 * Slow Machine:: You feel like buying a faster machine.
18430 @node Slow/Expensive Connection
18431 @subsection Slow/Expensive @sc{nntp} Connection
18433 If you run Emacs on a machine locally, and get your news from a machine
18434 over some very thin strings, you want to cut down on the amount of data
18435 Gnus has to get from the @sc{nntp} server.
18439 @item gnus-read-active-file
18440 Set this to @code{nil}, which will inhibit Gnus from requesting the
18441 entire active file from the server. This file is often v. large. You
18442 also have to set @code{gnus-check-new-newsgroups} and
18443 @code{gnus-check-bogus-newsgroups} to @code{nil} to make sure that Gnus
18444 doesn't suddenly decide to fetch the active file anyway.
18446 @item gnus-nov-is-evil
18447 This one has to be @code{nil}. If not, grabbing article headers from
18448 the @sc{nntp} server will not be very fast. Not all @sc{nntp} servers
18449 support @sc{xover}; Gnus will detect this by itself.
18453 @node Slow Terminal Connection
18454 @subsection Slow Terminal Connection
18456 Let's say you use your home computer for dialing up the system that runs
18457 Emacs and Gnus. If your modem is slow, you want to reduce (as much as
18458 possible) the amount of data sent over the wires.
18462 @item gnus-auto-center-summary
18463 Set this to @code{nil} to inhibit Gnus from re-centering the summary
18464 buffer all the time. If it is @code{vertical}, do only vertical
18465 re-centering. If it is neither @code{nil} nor @code{vertical}, do both
18466 horizontal and vertical recentering.
18468 @item gnus-visible-headers
18469 Cut down on the headers included in the articles to the
18470 minimum. You can, in fact, make do without them altogether---most of the
18471 useful data is in the summary buffer, anyway. Set this variable to
18472 @samp{^NEVVVVER} or @samp{From:}, or whatever you feel you need.
18474 @item gnus-article-display-hook
18475 Set this hook to all the available hiding commands:
18477 (setq gnus-article-display-hook
18478 '(gnus-article-hide-headers
18479 gnus-article-hide-signature
18480 gnus-article-hide-citation))
18483 @item gnus-use-full-window
18484 By setting this to @code{nil}, you can make all the windows smaller.
18485 While this doesn't really cut down much generally, it means that you
18486 have to see smaller portions of articles before deciding that you didn't
18487 want to read them anyway.
18489 @item gnus-thread-hide-subtree
18490 If this is non-@code{nil}, all threads in the summary buffer will be
18493 @item gnus-updated-mode-lines
18494 If this is @code{nil}, Gnus will not put information in the buffer mode
18495 lines, which might save some time.
18499 @node Little Disk Space
18500 @subsection Little Disk Space
18503 The startup files can get rather large, so you may want to cut their
18504 sizes a bit if you are running out of space.
18508 @item gnus-save-newsrc-file
18509 If this is @code{nil}, Gnus will never save @file{.newsrc}---it will
18510 only save @file{.newsrc.eld}. This means that you will not be able to
18511 use any other newsreaders than Gnus. This variable is @code{t} by
18514 @item gnus-save-killed-list
18515 If this is @code{nil}, Gnus will not save the list of dead groups. You
18516 should also set @code{gnus-check-new-newsgroups} to @code{ask-server}
18517 and @code{gnus-check-bogus-newsgroups} to @code{nil} if you set this
18518 variable to @code{nil}. This variable is @code{t} by default.
18524 @subsection Slow Machine
18525 @cindex slow machine
18527 If you have a slow machine, or are just really impatient, there are a
18528 few things you can do to make Gnus run faster.
18530 Set @code{gnus-check-new-newsgroups} and
18531 @code{gnus-check-bogus-newsgroups} to @code{nil} to make startup faster.
18533 Set @code{gnus-show-threads}, @code{gnus-use-cross-reference} and
18534 @code{gnus-nov-is-evil} to @code{nil} to make entering and exiting the
18535 summary buffer faster.
18537 Set @code{gnus-article-display-hook} to @code{nil} to make article
18538 processing a bit faster.
18542 @node Troubleshooting
18543 @section Troubleshooting
18544 @cindex troubleshooting
18546 Gnus works @emph{so} well straight out of the box---I can't imagine any
18554 Make sure your computer is switched on.
18557 Make sure that you really load the current Gnus version. If you have
18558 been running @sc{gnus}, you need to exit Emacs and start it up again before
18562 Try doing an @kbd{M-x gnus-version}. If you get something that looks
18563 like @samp{Gnus v5.46; nntp 4.0} you have the right files loaded. If,
18564 on the other hand, you get something like @samp{NNTP 3.x} or @samp{nntp
18565 flee}, you have some old @file{.el} files lying around. Delete these.
18568 Read the help group (@kbd{G h} in the group buffer) for a FAQ and a
18572 @vindex max-lisp-eval-depth
18573 Gnus works on many recursive structures, and in some extreme (and very
18574 rare) cases Gnus may recurse down ``too deeply'' and Emacs will beep at
18575 you. If this happens to you, set @code{max-lisp-eval-depth} to 500 or
18576 something like that.
18579 If all else fails, report the problem as a bug.
18582 @cindex reporting bugs
18584 @kindex M-x gnus-bug
18586 If you find a bug in Gnus, you can report it with the @kbd{M-x gnus-bug}
18587 command. @kbd{M-x set-variable RET debug-on-error RET t RET}, and send
18588 me the backtrace. I will fix bugs, but I can only fix them if you send
18589 me a precise description as to how to reproduce the bug.
18591 You really can never be too detailed in a bug report. Always use the
18592 @kbd{M-x gnus-bug} command when you make bug reports, even if it creates
18593 a 10Kb mail each time you use it, and even if you have sent me your
18594 environment 500 times before. I don't care. I want the full info each
18597 It is also important to remember that I have no memory whatsoever. If
18598 you send a bug report, and I send you a reply, and then you just send
18599 back ``No, it's not! Moron!'', I will have no idea what you are
18600 insulting me about. Always over-explain everything. It's much easier
18601 for all of us---if I don't have all the information I need, I will just
18602 mail you and ask for more info, and everything takes more time.
18604 If the problem you're seeing is very visual, and you can't quite explain
18605 it, copy the Emacs window to a file (with @code{xwd}, for instance), put
18606 it somewhere it can be reached, and include the URL of the picture in
18609 If you just need help, you are better off asking on
18610 @samp{gnu.emacs.gnus}. I'm not very helpful.
18612 @cindex gnu.emacs.gnus
18613 @cindex ding mailing list
18614 You can also ask on the ding mailing list---@samp{ding@@gnus.org}.
18615 Write to @samp{ding-request@@gnus.org} to subscribe.
18619 @node A Programmers Guide to Gnus
18620 @section A Programmer@'s Guide to Gnus
18622 It is my hope that other people will figure out smart stuff that Gnus
18623 can do, and that other people will write those smart things as well. To
18624 facilitate that I thought it would be a good idea to describe the inner
18625 workings of Gnus. And some of the not-so-inner workings, while I'm at
18628 You can never expect the internals of a program not to change, but I
18629 will be defining (in some details) the interface between Gnus and its
18630 backends (this is written in stone), the format of the score files
18631 (ditto), data structures (some are less likely to change than others)
18632 and general methods of operation.
18635 * Gnus Utility Functions:: Common functions and variable to use.
18636 * Backend Interface:: How Gnus communicates with the servers.
18637 * Score File Syntax:: A BNF definition of the score file standard.
18638 * Headers:: How Gnus stores headers internally.
18639 * Ranges:: A handy format for storing mucho numbers.
18640 * Group Info:: The group info format.
18641 * Extended Interactive:: Symbolic prefixes and stuff.
18642 * Emacs/XEmacs Code:: Gnus can be run under all modern Emacsen.
18643 * Various File Formats:: Formats of files that Gnus use.
18647 @node Gnus Utility Functions
18648 @subsection Gnus Utility Functions
18649 @cindex Gnus utility functions
18650 @cindex utility functions
18652 @cindex internal variables
18654 When writing small functions to be run from hooks (and stuff), it's
18655 vital to have access to the Gnus internal functions and variables.
18656 Below is a list of the most common ones.
18660 @item gnus-newsgroup-name
18661 @vindex gnus-newsgroup-name
18662 This variable holds the name of the current newsgroup.
18664 @item gnus-find-method-for-group
18665 @findex gnus-find-method-for-group
18666 A function that returns the select method for @var{group}.
18668 @item gnus-group-real-name
18669 @findex gnus-group-real-name
18670 Takes a full (prefixed) Gnus group name, and returns the unprefixed
18673 @item gnus-group-prefixed-name
18674 @findex gnus-group-prefixed-name
18675 Takes an unprefixed group name and a select method, and returns the full
18676 (prefixed) Gnus group name.
18678 @item gnus-get-info
18679 @findex gnus-get-info
18680 Returns the group info list for @var{group}.
18682 @item gnus-group-unread
18683 @findex gnus-group-unread
18684 The number of unread articles in @var{group}, or @code{t} if that is
18688 @findex gnus-active
18689 The active entry for @var{group}.
18691 @item gnus-set-active
18692 @findex gnus-set-active
18693 Set the active entry for @var{group}.
18695 @item gnus-add-current-to-buffer-list
18696 @findex gnus-add-current-to-buffer-list
18697 Adds the current buffer to the list of buffers to be killed on Gnus
18700 @item gnus-continuum-version
18701 @findex gnus-continuum-version
18702 Takes a Gnus version string as a parameter and returns a floating point
18703 number. Earlier versions will always get a lower number than later
18706 @item gnus-group-read-only-p
18707 @findex gnus-group-read-only-p
18708 Says whether @var{group} is read-only or not.
18710 @item gnus-news-group-p
18711 @findex gnus-news-group-p
18712 Says whether @var{group} came from a news backend.
18714 @item gnus-ephemeral-group-p
18715 @findex gnus-ephemeral-group-p
18716 Says whether @var{group} is ephemeral or not.
18718 @item gnus-server-to-method
18719 @findex gnus-server-to-method
18720 Returns the select method corresponding to @var{server}.
18722 @item gnus-server-equal
18723 @findex gnus-server-equal
18724 Says whether two virtual servers are equal.
18726 @item gnus-group-native-p
18727 @findex gnus-group-native-p
18728 Says whether @var{group} is native or not.
18730 @item gnus-group-secondary-p
18731 @findex gnus-group-secondary-p
18732 Says whether @var{group} is secondary or not.
18734 @item gnus-group-foreign-p
18735 @findex gnus-group-foreign-p
18736 Says whether @var{group} is foreign or not.
18738 @item group-group-find-parameter
18739 @findex group-group-find-parameter
18740 Returns the parameter list of @var{group}. If given a second parameter,
18741 returns the value of that parameter for @var{group}.
18743 @item gnus-group-set-parameter
18744 @findex gnus-group-set-parameter
18745 Takes three parameters; @var{group}, @var{parameter} and @var{value}.
18747 @item gnus-narrow-to-body
18748 @findex gnus-narrow-to-body
18749 Narrows the current buffer to the body of the article.
18751 @item gnus-check-backend-function
18752 @findex gnus-check-backend-function
18753 Takes two parameters, @var{function} and @var{group}. If the backend
18754 @var{group} comes from supports @var{function}, return non-@code{nil}.
18757 (gnus-check-backend-function "request-scan" "nnml:misc")
18761 @item gnus-read-method
18762 @findex gnus-read-method
18763 Prompts the user for a select method.
18768 @node Backend Interface
18769 @subsection Backend Interface
18771 Gnus doesn't know anything about @sc{nntp}, spools, mail or virtual
18772 groups. It only knows how to talk to @dfn{virtual servers}. A virtual
18773 server is a @dfn{backend} and some @dfn{backend variables}. As examples
18774 of the first, we have @code{nntp}, @code{nnspool} and @code{nnmbox}. As
18775 examples of the latter we have @code{nntp-port-number} and
18776 @code{nnmbox-directory}.
18778 When Gnus asks for information from a backend---say @code{nntp}---on
18779 something, it will normally include a virtual server name in the
18780 function parameters. (If not, the backend should use the ``current''
18781 virtual server.) For instance, @code{nntp-request-list} takes a virtual
18782 server as its only (optional) parameter. If this virtual server hasn't
18783 been opened, the function should fail.
18785 Note that a virtual server name has no relation to some physical server
18786 name. Take this example:
18790 (nntp-address "ifi.uio.no")
18791 (nntp-port-number 4324))
18794 Here the virtual server name is @samp{odd-one} while the name of
18795 the physical server is @samp{ifi.uio.no}.
18797 The backends should be able to switch between several virtual servers.
18798 The standard backends implement this by keeping an alist of virtual
18799 server environments that they pull down/push up when needed.
18801 There are two groups of interface functions: @dfn{required functions},
18802 which must be present, and @dfn{optional functions}, which Gnus will
18803 always check for presence before attempting to call 'em.
18805 All these functions are expected to return data in the buffer
18806 @code{nntp-server-buffer} (@samp{ *nntpd*}), which is somewhat
18807 unfortunately named, but we'll have to live with it. When I talk about
18808 @dfn{resulting data}, I always refer to the data in that buffer. When I
18809 talk about @dfn{return value}, I talk about the function value returned by
18810 the function call. Functions that fail should return @code{nil} as the
18813 Some backends could be said to be @dfn{server-forming} backends, and
18814 some might be said not to be. The latter are backends that generally
18815 only operate on one group at a time, and have no concept of ``server''
18816 -- they have a group, and they deliver info on that group and nothing
18819 In the examples and definitions I will refer to the imaginary backend
18822 @cindex @code{nnchoke}
18825 * Required Backend Functions:: Functions that must be implemented.
18826 * Optional Backend Functions:: Functions that need not be implemented.
18827 * Error Messaging:: How to get messages and report errors.
18828 * Writing New Backends:: Extending old backends.
18829 * Hooking New Backends Into Gnus:: What has to be done on the Gnus end.
18830 * Mail-like Backends:: Some tips on mail backends.
18834 @node Required Backend Functions
18835 @subsubsection Required Backend Functions
18839 @item (nnchoke-retrieve-headers ARTICLES &optional GROUP SERVER FETCH-OLD)
18841 @var{articles} is either a range of article numbers or a list of
18842 @code{Message-ID}s. Current backends do not fully support either---only
18843 sequences (lists) of article numbers, and most backends do not support
18844 retrieval of @code{Message-ID}s. But they should try for both.
18846 The result data should either be HEADs or NOV lines, and the result
18847 value should either be @code{headers} or @code{nov} to reflect this.
18848 This might later be expanded to @code{various}, which will be a mixture
18849 of HEADs and NOV lines, but this is currently not supported by Gnus.
18851 If @var{fetch-old} is non-@code{nil} it says to try fetching "extra
18852 headers", in some meaning of the word. This is generally done by
18853 fetching (at most) @var{fetch-old} extra headers less than the smallest
18854 article number in @code{articles}, and filling the gaps as well. The
18855 presence of this parameter can be ignored if the backend finds it
18856 cumbersome to follow the request. If this is non-@code{nil} and not a
18857 number, do maximum fetches.
18859 Here's an example HEAD:
18862 221 1056 Article retrieved.
18863 Path: ifi.uio.no!sturles
18864 From: sturles@@ifi.uio.no (Sturle Sunde)
18865 Newsgroups: ifi.discussion
18866 Subject: Re: Something very droll
18867 Date: 27 Oct 1994 14:02:57 +0100
18868 Organization: Dept. of Informatics, University of Oslo, Norway
18870 Message-ID: <38o8e1$a0o@@holmenkollen.ifi.uio.no>
18871 References: <38jdmq$4qu@@visbur.ifi.uio.no>
18872 NNTP-Posting-Host: holmenkollen.ifi.uio.no
18876 So a @code{headers} return value would imply that there's a number of
18877 these in the data buffer.
18879 Here's a BNF definition of such a buffer:
18883 head = error / valid-head
18884 error-message = [ "4" / "5" ] 2number " " <error message> eol
18885 valid-head = valid-message *header "." eol
18886 valid-message = "221 " <number> " Article retrieved." eol
18887 header = <text> eol
18890 If the return value is @code{nov}, the data buffer should contain
18891 @dfn{network overview database} lines. These are basically fields
18895 nov-buffer = *nov-line
18896 nov-line = 8*9 [ field <TAB> ] eol
18897 field = <text except TAB>
18900 For a closer look at what should be in those fields,
18904 @item (nnchoke-open-server SERVER &optional DEFINITIONS)
18906 @var{server} is here the virtual server name. @var{definitions} is a
18907 list of @code{(VARIABLE VALUE)} pairs that define this virtual server.
18909 If the server can't be opened, no error should be signaled. The backend
18910 may then choose to refuse further attempts at connecting to this
18911 server. In fact, it should do so.
18913 If the server is opened already, this function should return a
18914 non-@code{nil} value. There should be no data returned.
18917 @item (nnchoke-close-server &optional SERVER)
18919 Close connection to @var{server} and free all resources connected
18920 to it. Return @code{nil} if the server couldn't be closed for some
18923 There should be no data returned.
18926 @item (nnchoke-request-close)
18928 Close connection to all servers and free all resources that the backend
18929 have reserved. All buffers that have been created by that backend
18930 should be killed. (Not the @code{nntp-server-buffer}, though.) This
18931 function is generally only called when Gnus is shutting down.
18933 There should be no data returned.
18936 @item (nnchoke-server-opened &optional SERVER)
18938 If @var{server} is the current virtual server, and the connection to the
18939 physical server is alive, then this function should return a
18940 non-@code{nil} vlue. This function should under no circumstances
18941 attempt to reconnect to a server we have lost connection to.
18943 There should be no data returned.
18946 @item (nnchoke-status-message &optional SERVER)
18948 This function should return the last error message from @var{server}.
18950 There should be no data returned.
18953 @item (nnchoke-request-article ARTICLE &optional GROUP SERVER TO-BUFFER)
18955 The result data from this function should be the article specified by
18956 @var{article}. This might either be a @code{Message-ID} or a number.
18957 It is optional whether to implement retrieval by @code{Message-ID}, but
18958 it would be nice if that were possible.
18960 If @var{to-buffer} is non-@code{nil}, the result data should be returned
18961 in this buffer instead of the normal data buffer. This is to make it
18962 possible to avoid copying large amounts of data from one buffer to
18963 another, while Gnus mainly requests articles to be inserted directly
18964 into its article buffer.
18966 If it is at all possible, this function should return a cons cell where
18967 the @code{car} is the group name the article was fetched from, and the @code{cdr} is
18968 the article number. This will enable Gnus to find out what the real
18969 group and article numbers are when fetching articles by
18970 @code{Message-ID}. If this isn't possible, @code{t} should be returned
18971 on successful article retrieval.
18974 @item (nnchoke-request-group GROUP &optional SERVER FAST)
18976 Get data on @var{group}. This function also has the side effect of
18977 making @var{group} the current group.
18979 If @var{FAST}, don't bother to return useful data, just make @var{group}
18982 Here's an example of some result data and a definition of the same:
18985 211 56 1000 1059 ifi.discussion
18988 The first number is the status, which should be 211. Next is the
18989 total number of articles in the group, the lowest article number, the
18990 highest article number, and finally the group name. Note that the total
18991 number of articles may be less than one might think while just
18992 considering the highest and lowest article numbers, but some articles
18993 may have been canceled. Gnus just discards the total-number, so
18994 whether one should take the bother to generate it properly (if that is a
18995 problem) is left as an exercise to the reader.
18998 group-status = [ error / info ] eol
18999 error = [ "4" / "5" ] 2<number> " " <Error message>
19000 info = "211 " 3* [ <number> " " ] <string>
19004 @item (nnchoke-close-group GROUP &optional SERVER)
19006 Close @var{group} and free any resources connected to it. This will be
19007 a no-op on most backends.
19009 There should be no data returned.
19012 @item (nnchoke-request-list &optional SERVER)
19014 Return a list of all groups available on @var{server}. And that means
19017 Here's an example from a server that only carries two groups:
19020 ifi.test 0000002200 0000002000 y
19021 ifi.discussion 3324 3300 n
19024 On each line we have a group name, then the highest article number in
19025 that group, the lowest article number, and finally a flag.
19028 active-file = *active-line
19029 active-line = name " " <number> " " <number> " " flags eol
19031 flags = "n" / "y" / "m" / "x" / "j" / "=" name
19034 The flag says whether the group is read-only (@samp{n}), is moderated
19035 (@samp{m}), is dead (@samp{x}), is aliased to some other group
19036 (@samp{=other-group}) or none of the above (@samp{y}).
19039 @item (nnchoke-request-post &optional SERVER)
19041 This function should post the current buffer. It might return whether
19042 the posting was successful or not, but that's not required. If, for
19043 instance, the posting is done asynchronously, it has generally not been
19044 completed by the time this function concludes. In that case, this
19045 function should set up some kind of sentinel to beep the user loud and
19046 clear if the posting could not be completed.
19048 There should be no result data from this function.
19053 @node Optional Backend Functions
19054 @subsubsection Optional Backend Functions
19058 @item (nnchoke-retrieve-groups GROUPS &optional SERVER)
19060 @var{groups} is a list of groups, and this function should request data
19061 on all those groups. How it does it is of no concern to Gnus, but it
19062 should attempt to do this in a speedy fashion.
19064 The return value of this function can be either @code{active} or
19065 @code{group}, which says what the format of the result data is. The
19066 former is in the same format as the data from
19067 @code{nnchoke-request-list}, while the latter is a buffer full of lines
19068 in the same format as @code{nnchoke-request-group} gives.
19071 group-buffer = *active-line / *group-status
19075 @item (nnchoke-request-update-info GROUP INFO &optional SERVER)
19077 A Gnus group info (@pxref{Group Info}) is handed to the backend for
19078 alterations. This comes in handy if the backend really carries all the
19079 information (as is the case with virtual and imap groups). This
19080 function should destructively alter the info to suit its needs, and
19081 should return the (altered) group info.
19083 There should be no result data from this function.
19086 @item (nnchoke-request-type GROUP &optional ARTICLE)
19088 When the user issues commands for ``sending news'' (@kbd{F} in the
19089 summary buffer, for instance), Gnus has to know whether the article the
19090 user is following up on is news or mail. This function should return
19091 @code{news} if @var{article} in @var{group} is news, @code{mail} if it
19092 is mail and @code{unknown} if the type can't be decided. (The
19093 @var{article} parameter is necessary in @code{nnvirtual} groups which
19094 might very well combine mail groups and news groups.) Both @var{group}
19095 and @var{article} may be @code{nil}.
19097 There should be no result data from this function.
19100 @item (nnchoke-request-update-mark GROUP ARTICLE MARK)
19102 If the user tries to set a mark that the backend doesn't like, this
19103 function may change the mark. Gnus will use whatever this function
19104 returns as the mark for @var{article} instead of the original
19105 @var{mark}. If the backend doesn't care, it must return the original
19106 @var{mark}, and not @code{nil} or any other type of garbage.
19108 The only use for this I can see is what @code{nnvirtual} does with
19109 it---if a component group is auto-expirable, marking an article as read
19110 in the virtual group should result in the article being marked as
19113 There should be no result data from this function.
19116 @item (nnchoke-request-scan &optional GROUP SERVER)
19118 This function may be called at any time (by Gnus or anything else) to
19119 request that the backend check for incoming articles, in one way or
19120 another. A mail backend will typically read the spool file or query the
19121 POP server when this function is invoked. The @var{group} doesn't have
19122 to be heeded---if the backend decides that it is too much work just
19123 scanning for a single group, it may do a total scan of all groups. It
19124 would be nice, however, to keep things local if that's practical.
19126 There should be no result data from this function.
19129 @item (nnchoke-request-group-description GROUP &optional SERVER)
19131 The result data from this function should be a description of
19135 description-line = name <TAB> description eol
19137 description = <text>
19140 @item (nnchoke-request-list-newsgroups &optional SERVER)
19142 The result data from this function should be the description of all
19143 groups available on the server.
19146 description-buffer = *description-line
19150 @item (nnchoke-request-newgroups DATE &optional SERVER)
19152 The result data from this function should be all groups that were
19153 created after @samp{date}, which is in normal human-readable date
19154 format. The data should be in the active buffer format.
19157 @item (nnchoke-request-create-group GROUP &optional SERVER)
19159 This function should create an empty group with name @var{group}.
19161 There should be no return data.
19164 @item (nnchoke-request-expire-articles ARTICLES &optional GROUP SERVER FORCE)
19166 This function should run the expiry process on all articles in the
19167 @var{articles} range (which is currently a simple list of article
19168 numbers.) It is left up to the backend to decide how old articles
19169 should be before they are removed by this function. If @var{force} is
19170 non-@code{nil}, all @var{articles} should be deleted, no matter how new
19173 This function should return a list of articles that it did not/was not
19176 There should be no result data returned.
19179 @item (nnchoke-request-move-article ARTICLE GROUP SERVER ACCEPT-FORM
19182 This function should move @var{article} (which is a number) from
19183 @var{group} by calling @var{accept-form}.
19185 This function should ready the article in question for moving by
19186 removing any header lines it has added to the article, and generally
19187 should ``tidy up'' the article. Then it should @code{eval}
19188 @var{accept-form} in the buffer where the ``tidy'' article is. This
19189 will do the actual copying. If this @code{eval} returns a
19190 non-@code{nil} value, the article should be removed.
19192 If @var{last} is @code{nil}, that means that there is a high likelihood
19193 that there will be more requests issued shortly, so that allows some
19196 The function should return a cons where the @code{car} is the group name and
19197 the @code{cdr} is the article number that the article was entered as.
19199 There should be no data returned.
19202 @item (nnchoke-request-accept-article GROUP &optional SERVER LAST)
19204 This function takes the current buffer and inserts it into @var{group}.
19205 If @var{last} in @code{nil}, that means that there will be more calls to
19206 this function in short order.
19208 The function should return a cons where the @code{car} is the group name and
19209 the @code{cdr} is the article number that the article was entered as.
19211 There should be no data returned.
19214 @item (nnchoke-request-replace-article ARTICLE GROUP BUFFER)
19216 This function should remove @var{article} (which is a number) from
19217 @var{group} and insert @var{buffer} there instead.
19219 There should be no data returned.
19222 @item (nnchoke-request-delete-group GROUP FORCE &optional SERVER)
19224 This function should delete @var{group}. If @var{force}, it should
19225 really delete all the articles in the group, and then delete the group
19226 itself. (If there is such a thing as ``the group itself''.)
19228 There should be no data returned.
19231 @item (nnchoke-request-rename-group GROUP NEW-NAME &optional SERVER)
19233 This function should rename @var{group} into @var{new-name}. All
19234 articles in @var{group} should move to @var{new-name}.
19236 There should be no data returned.
19241 @node Error Messaging
19242 @subsubsection Error Messaging
19244 @findex nnheader-report
19245 @findex nnheader-get-report
19246 The backends should use the function @code{nnheader-report} to report
19247 error conditions---they should not raise errors when they aren't able to
19248 perform a request. The first argument to this function is the backend
19249 symbol, and the rest are interpreted as arguments to @code{format} if
19250 there are multiple of them, or just a string if there is one of them.
19251 This function must always returns @code{nil}.
19254 (nnheader-report 'nnchoke "You did something totally bogus")
19256 (nnheader-report 'nnchoke "Could not request group %s" group)
19259 Gnus, in turn, will call @code{nnheader-get-report} when it gets a
19260 @code{nil} back from a server, and this function returns the most
19261 recently reported message for the backend in question. This function
19262 takes one argument---the server symbol.
19264 Internally, these functions access @var{backend}@code{-status-string},
19265 so the @code{nnchoke} backend will have its error message stored in
19266 @code{nnchoke-status-string}.
19269 @node Writing New Backends
19270 @subsubsection Writing New Backends
19272 Many backends are quite similar. @code{nnml} is just like
19273 @code{nnspool}, but it allows you to edit the articles on the server.
19274 @code{nnmh} is just like @code{nnml}, but it doesn't use an active file,
19275 and it doesn't maintain overview databases. @code{nndir} is just like
19276 @code{nnml}, but it has no concept of ``groups'', and it doesn't allow
19279 It would make sense if it were possible to ``inherit'' functions from
19280 backends when writing new backends. And, indeed, you can do that if you
19281 want to. (You don't have to if you don't want to, of course.)
19283 All the backends declare their public variables and functions by using a
19284 package called @code{nnoo}.
19286 To inherit functions from other backends (and allow other backends to
19287 inherit functions from the current backend), you should use the
19293 This macro declares the first parameter to be a child of the subsequent
19294 parameters. For instance:
19297 (nnoo-declare nndir
19301 @code{nndir} has declared here that it intends to inherit functions from
19302 both @code{nnml} and @code{nnmh}.
19305 This macro is equivalent to @code{defvar}, but registers the variable as
19306 a public server variable. Most state-oriented variables should be
19307 declared with @code{defvoo} instead of @code{defvar}.
19309 In addition to the normal @code{defvar} parameters, it takes a list of
19310 variables in the parent backends to map the variable to when executing
19311 a function in those backends.
19314 (defvoo nndir-directory nil
19315 "Where nndir will look for groups."
19316 nnml-current-directory nnmh-current-directory)
19319 This means that @code{nnml-current-directory} will be set to
19320 @code{nndir-directory} when an @code{nnml} function is called on behalf
19321 of @code{nndir}. (The same with @code{nnmh}.)
19323 @item nnoo-define-basics
19324 This macro defines some common functions that almost all backends should
19328 (nnoo-define-basics nndir)
19332 This macro is just like @code{defun} and takes the same parameters. In
19333 addition to doing the normal @code{defun} things, it registers the
19334 function as being public so that other backends can inherit it.
19336 @item nnoo-map-functions
19337 This macro allows mapping of functions from the current backend to
19338 functions from the parent backends.
19341 (nnoo-map-functions nndir
19342 (nnml-retrieve-headers 0 nndir-current-group 0 0)
19343 (nnmh-request-article 0 nndir-current-group 0 0))
19346 This means that when @code{nndir-retrieve-headers} is called, the first,
19347 third, and fourth parameters will be passed on to
19348 @code{nnml-retrieve-headers}, while the second parameter is set to the
19349 value of @code{nndir-current-group}.
19352 This macro allows importing functions from backends. It should be the
19353 last thing in the source file, since it will only define functions that
19354 haven't already been defined.
19360 nnmh-request-newgroups)
19364 This means that calls to @code{nndir-request-list} should just be passed
19365 on to @code{nnmh-request-list}, while all public functions from
19366 @code{nnml} that haven't been defined in @code{nndir} yet should be
19371 Below is a slightly shortened version of the @code{nndir} backend.
19374 ;;; nndir.el --- single directory newsgroup access for Gnus
19375 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
19379 (require 'nnheader)
19383 (eval-when-compile (require 'cl))
19385 (nnoo-declare nndir
19388 (defvoo nndir-directory nil
19389 "Where nndir will look for groups."
19390 nnml-current-directory nnmh-current-directory)
19392 (defvoo nndir-nov-is-evil nil
19393 "*Non-nil means that nndir will never retrieve NOV headers."
19396 (defvoo nndir-current-group "" nil nnml-current-group nnmh-current-group)
19397 (defvoo nndir-top-directory nil nil nnml-directory nnmh-directory)
19398 (defvoo nndir-get-new-mail nil nil nnml-get-new-mail nnmh-get-new-mail)
19400 (defvoo nndir-status-string "" nil nnmh-status-string)
19401 (defconst nndir-version "nndir 1.0")
19403 ;;; Interface functions.
19405 (nnoo-define-basics nndir)
19407 (deffoo nndir-open-server (server &optional defs)
19408 (setq nndir-directory
19409 (or (cadr (assq 'nndir-directory defs))
19411 (unless (assq 'nndir-directory defs)
19412 (push `(nndir-directory ,server) defs))
19413 (push `(nndir-current-group
19414 ,(file-name-nondirectory (directory-file-name nndir-directory)))
19416 (push `(nndir-top-directory
19417 ,(file-name-directory (directory-file-name nndir-directory)))
19419 (nnoo-change-server 'nndir server defs))
19421 (nnoo-map-functions nndir
19422 (nnml-retrieve-headers 0 nndir-current-group 0 0)
19423 (nnmh-request-article 0 nndir-current-group 0 0)
19424 (nnmh-request-group nndir-current-group 0 0)
19425 (nnmh-close-group nndir-current-group 0))
19429 nnmh-status-message
19431 nnmh-request-newgroups))
19437 @node Hooking New Backends Into Gnus
19438 @subsubsection Hooking New Backends Into Gnus
19440 @vindex gnus-valid-select-methods
19441 Having Gnus start using your new backend is rather easy---you just
19442 declare it with the @code{gnus-declare-backend} functions. This will
19443 enter the backend into the @code{gnus-valid-select-methods} variable.
19445 @code{gnus-declare-backend} takes two parameters---the backend name and
19446 an arbitrary number of @dfn{abilities}.
19451 (gnus-declare-backend "nnchoke" 'mail 'respool 'address)
19454 The abilities can be:
19458 This is a mailish backend---followups should (probably) go via mail.
19460 This is a newsish backend---followups should (probably) go via news.
19462 This backend supports both mail and news.
19464 This is neither a post nor mail backend---it's something completely
19467 It supports respooling---or rather, it is able to modify its source
19468 articles and groups.
19470 The name of the server should be in the virtual server name. This is
19471 true for almost all backends.
19472 @item prompt-address
19473 The user should be prompted for an address when doing commands like
19474 @kbd{B} in the group buffer. This is true for backends like
19475 @code{nntp}, but not @code{nnmbox}, for instance.
19479 @node Mail-like Backends
19480 @subsubsection Mail-like Backends
19482 One of the things that separate the mail backends from the rest of the
19483 backends is the heavy dependence by the mail backends on common
19484 functions in @file{nnmail.el}. For instance, here's the definition of
19485 @code{nnml-request-scan}:
19488 (deffoo nnml-request-scan (&optional group server)
19489 (setq nnml-article-file-alist nil)
19490 (nnmail-get-new-mail 'nnml 'nnml-save-nov nnml-directory group))
19493 It simply calls @code{nnmail-get-new-mail} with a few parameters,
19494 and @code{nnmail} takes care of all the moving and splitting of the
19497 This function takes four parameters.
19501 This should be a symbol to designate which backend is responsible for
19504 @item exit-function
19505 This function should be called after the splitting has been performed.
19507 @item temp-directory
19508 Where the temporary files should be stored.
19511 This optional argument should be a group name if the splitting is to be
19512 performed for one group only.
19515 @code{nnmail-get-new-mail} will call @var{backend}@code{-save-mail} to
19516 save each article. @var{backend}@code{-active-number} will be called to
19517 find the article number assigned to this article.
19519 The function also uses the following variables:
19520 @var{backend}@code{-get-new-mail} (to see whether to get new mail for
19521 this backend); and @var{backend}@code{-group-alist} and
19522 @var{backend}@code{-active-file} to generate the new active file.
19523 @var{backend}@code{-group-alist} should be a group-active alist, like
19527 (("a-group" (1 . 10))
19528 ("some-group" (34 . 39)))
19532 @node Score File Syntax
19533 @subsection Score File Syntax
19535 Score files are meant to be easily parseable, but yet extremely
19536 mallable. It was decided that something that had the same read syntax
19537 as an Emacs Lisp list would fit that spec.
19539 Here's a typical score file:
19543 ("win95" -10000 nil s)
19550 BNF definition of a score file:
19553 score-file = "" / "(" *element ")"
19554 element = rule / atom
19555 rule = string-rule / number-rule / date-rule
19556 string-rule = "(" quote string-header quote space *string-match ")"
19557 number-rule = "(" quote number-header quote space *number-match ")"
19558 date-rule = "(" quote date-header quote space *date-match ")"
19560 string-header = "subject" / "from" / "references" / "message-id" /
19561 "xref" / "body" / "head" / "all" / "followup"
19562 number-header = "lines" / "chars"
19563 date-header = "date"
19564 string-match = "(" quote <string> quote [ "" / [ space score [ "" /
19565 space date [ "" / [ space string-match-t ] ] ] ] ] ")"
19566 score = "nil" / <integer>
19567 date = "nil" / <natural number>
19568 string-match-t = "nil" / "s" / "substring" / "S" / "Substring" /
19569 "r" / "regex" / "R" / "Regex" /
19570 "e" / "exact" / "E" / "Exact" /
19571 "f" / "fuzzy" / "F" / "Fuzzy"
19572 number-match = "(" <integer> [ "" / [ space score [ "" /
19573 space date [ "" / [ space number-match-t ] ] ] ] ] ")"
19574 number-match-t = "nil" / "=" / "<" / ">" / ">=" / "<="
19575 date-match = "(" quote <string> quote [ "" / [ space score [ "" /
19576 space date [ "" / [ space date-match-t ] ] ] ] ")"
19577 date-match-t = "nil" / "at" / "before" / "after"
19578 atom = "(" [ required-atom / optional-atom ] ")"
19579 required-atom = mark / expunge / mark-and-expunge / files /
19580 exclude-files / read-only / touched
19581 optional-atom = adapt / local / eval
19582 mark = "mark" space nil-or-number
19583 nil-or-number = "nil" / <integer>
19584 expunge = "expunge" space nil-or-number
19585 mark-and-expunge = "mark-and-expunge" space nil-or-number
19586 files = "files" *[ space <string> ]
19587 exclude-files = "exclude-files" *[ space <string> ]
19588 read-only = "read-only" [ space "nil" / space "t" ]
19589 adapt = "adapt" [ space "ignore" / space "t" / space adapt-rule ]
19590 adapt-rule = "(" *[ <string> *[ "(" <string> <integer> ")" ] ")"
19591 local = "local" *[ space "(" <string> space <form> ")" ]
19592 eval = "eval" space <form>
19593 space = *[ " " / <TAB> / <NEWLINE> ]
19596 Any unrecognized elements in a score file should be ignored, but not
19599 As you can see, white space is needed, but the type and amount of white
19600 space is irrelevant. This means that formatting of the score file is
19601 left up to the programmer---if it's simpler to just spew it all out on
19602 one looong line, then that's ok.
19604 The meaning of the various atoms are explained elsewhere in this
19605 manual (@pxref{Score File Format}).
19609 @subsection Headers
19611 Internally Gnus uses a format for storing article headers that
19612 corresponds to the @sc{nov} format in a mysterious fashion. One could
19613 almost suspect that the author looked at the @sc{nov} specification and
19614 just shamelessly @emph{stole} the entire thing, and one would be right.
19616 @dfn{Header} is a severely overloaded term. ``Header'' is used in
19617 RFC1036 to talk about lines in the head of an article (e.g.,
19618 @code{From}). It is used by many people as a synonym for
19619 ``head''---``the header and the body''. (That should be avoided, in my
19620 opinion.) And Gnus uses a format internally that it calls ``header'',
19621 which is what I'm talking about here. This is a 9-element vector,
19622 basically, with each header (ouch) having one slot.
19624 These slots are, in order: @code{number}, @code{subject}, @code{from},
19625 @code{date}, @code{id}, @code{references}, @code{chars}, @code{lines},
19626 @code{xref}. There are macros for accessing and setting these
19627 slots---they all have predictable names beginning with
19628 @code{mail-header-} and @code{mail-header-set-}, respectively.
19630 The @code{xref} slot is really a @code{misc} slot. Any extra info will
19637 @sc{gnus} introduced a concept that I found so useful that I've started
19638 using it a lot and have elaborated on it greatly.
19640 The question is simple: If you have a large amount of objects that are
19641 identified by numbers (say, articles, to take a @emph{wild} example)
19642 that you want to qualify as being ``included'', a normal sequence isn't
19643 very useful. (A 200,000 length sequence is a bit long-winded.)
19645 The solution is as simple as the question: You just collapse the
19649 (1 2 3 4 5 6 10 11 12)
19652 is transformed into
19655 ((1 . 6) (10 . 12))
19658 To avoid having those nasty @samp{(13 . 13)} elements to denote a
19659 lonesome object, a @samp{13} is a valid element:
19662 ((1 . 6) 7 (10 . 12))
19665 This means that comparing two ranges to find out whether they are equal
19666 is slightly tricky:
19669 ((1 . 5) 7 8 (10 . 12))
19675 ((1 . 5) (7 . 8) (10 . 12))
19678 are equal. In fact, any non-descending list is a range:
19684 is a perfectly valid range, although a pretty long-winded one. This is
19691 and is equal to the previous range.
19693 Here's a BNF definition of ranges. Of course, one must remember the
19694 semantic requirement that the numbers are non-descending. (Any number
19695 of repetition of the same number is allowed, but apt to disappear in
19699 range = simple-range / normal-range
19700 simple-range = "(" number " . " number ")"
19701 normal-range = "(" start-contents ")"
19702 contents = "" / simple-range *[ " " contents ] /
19703 number *[ " " contents ]
19706 Gnus currently uses ranges to keep track of read articles and article
19707 marks. I plan on implementing a number of range operators in C if The
19708 Powers That Be are willing to let me. (I haven't asked yet, because I
19709 need to do some more thinking on what operators I need to make life
19710 totally range-based without ever having to convert back to normal
19715 @subsection Group Info
19717 Gnus stores all permanent info on groups in a @dfn{group info} list.
19718 This list is from three to six elements (or more) long and exhaustively
19719 describes the group.
19721 Here are two example group infos; one is a very simple group while the
19722 second is a more complex one:
19725 ("no.group" 5 (1 . 54324))
19727 ("nnml:my.mail" 3 ((1 . 5) 9 (20 . 55))
19728 ((tick (15 . 19)) (replied 3 6 (19 . 3)))
19730 ((auto-expire . t) (to-address . "ding@@gnus.org")))
19733 The first element is the @dfn{group name}---as Gnus knows the group,
19734 anyway. The second element is the @dfn{subscription level}, which
19735 normally is a small integer. (It can also be the @dfn{rank}, which is a
19736 cons cell where the @code{car} is the level and the @code{cdr} is the
19737 score.) The third element is a list of ranges of read articles. The
19738 fourth element is a list of lists of article marks of various kinds.
19739 The fifth element is the select method (or virtual server, if you like).
19740 The sixth element is a list of @dfn{group parameters}, which is what
19741 this section is about.
19743 Any of the last three elements may be missing if they are not required.
19744 In fact, the vast majority of groups will normally only have the first
19745 three elements, which saves quite a lot of cons cells.
19747 Here's a BNF definition of the group info format:
19750 info = "(" group space ralevel space read
19751 [ "" / [ space marks-list [ "" / [ space method [ "" /
19752 space parameters ] ] ] ] ] ")"
19753 group = quote <string> quote
19754 ralevel = rank / level
19755 level = <integer in the range of 1 to inf>
19756 rank = "(" level "." score ")"
19757 score = <integer in the range of 1 to inf>
19759 marks-lists = nil / "(" *marks ")"
19760 marks = "(" <string> range ")"
19761 method = "(" <string> *elisp-forms ")"
19762 parameters = "(" *elisp-forms ")"
19765 Actually that @samp{marks} rule is a fib. A @samp{marks} is a
19766 @samp{<string>} consed on to a @samp{range}, but that's a bitch to say
19769 If you have a Gnus info and want to access the elements, Gnus offers a
19770 series of macros for getting/setting these elements.
19773 @item gnus-info-group
19774 @itemx gnus-info-set-group
19775 @findex gnus-info-group
19776 @findex gnus-info-set-group
19777 Get/set the group name.
19779 @item gnus-info-rank
19780 @itemx gnus-info-set-rank
19781 @findex gnus-info-rank
19782 @findex gnus-info-set-rank
19783 Get/set the group rank (@pxref{Group Score}).
19785 @item gnus-info-level
19786 @itemx gnus-info-set-level
19787 @findex gnus-info-level
19788 @findex gnus-info-set-level
19789 Get/set the group level.
19791 @item gnus-info-score
19792 @itemx gnus-info-set-score
19793 @findex gnus-info-score
19794 @findex gnus-info-set-score
19795 Get/set the group score (@pxref{Group Score}).
19797 @item gnus-info-read
19798 @itemx gnus-info-set-read
19799 @findex gnus-info-read
19800 @findex gnus-info-set-read
19801 Get/set the ranges of read articles.
19803 @item gnus-info-marks
19804 @itemx gnus-info-set-marks
19805 @findex gnus-info-marks
19806 @findex gnus-info-set-marks
19807 Get/set the lists of ranges of marked articles.
19809 @item gnus-info-method
19810 @itemx gnus-info-set-method
19811 @findex gnus-info-method
19812 @findex gnus-info-set-method
19813 Get/set the group select method.
19815 @item gnus-info-params
19816 @itemx gnus-info-set-params
19817 @findex gnus-info-params
19818 @findex gnus-info-set-params
19819 Get/set the group parameters.
19822 All the getter functions take one parameter---the info list. The setter
19823 functions take two parameters---the info list and the new value.
19825 The last three elements in the group info aren't mandatory, so it may be
19826 necessary to extend the group info before setting the element. If this
19827 is necessary, you can just pass on a non-@code{nil} third parameter to
19828 the three final setter functions to have this happen automatically.
19831 @node Extended Interactive
19832 @subsection Extended Interactive
19833 @cindex interactive
19834 @findex gnus-interactive
19836 Gnus extends the standard Emacs @code{interactive} specification
19837 slightly to allow easy use of the symbolic prefix (@pxref{Symbolic
19838 Prefixes}). Here's an example of how this is used:
19841 (defun gnus-summary-increase-score (&optional score symp)
19842 (interactive (gnus-interactive "P\ny"))
19847 The best thing to do would have been to implement
19848 @code{gnus-interactive} as a macro which would have returned an
19849 @code{interactive} form, but this isn't possible since Emacs checks
19850 whether a function is interactive or not by simply doing an @code{assq}
19851 on the lambda form. So, instead we have @code{gnus-interactive}
19852 function that takes a string and returns values that are usable to
19853 @code{interactive}.
19855 This function accepts (almost) all normal @code{interactive} specs, but
19860 @vindex gnus-current-prefix-symbol
19861 The current symbolic prefix---the @code{gnus-current-prefix-symbol}
19865 @vindex gnus-current-prefix-symbols
19866 A list of the current symbolic prefixes---the
19867 @code{gnus-current-prefix-symbol} variable.
19870 The current article number---the @code{gnus-summary-article-number}
19874 The current article header---the @code{gnus-summary-article-header}
19878 The current group name---the @code{gnus-group-group-name}
19884 @node Emacs/XEmacs Code
19885 @subsection Emacs/XEmacs Code
19889 While Gnus runs under Emacs, XEmacs and Mule, I decided that one of the
19890 platforms must be the primary one. I chose Emacs. Not because I don't
19891 like XEmacs or Mule, but because it comes first alphabetically.
19893 This means that Gnus will byte-compile under Emacs with nary a warning,
19894 while XEmacs will pump out gigabytes of warnings while byte-compiling.
19895 As I use byte-compilation warnings to help me root out trivial errors in
19896 Gnus, that's very useful.
19898 I've also consistently used Emacs function interfaces, but have used
19899 Gnusey aliases for the functions. To take an example: Emacs defines a
19900 @code{run-at-time} function while XEmacs defines a @code{start-itimer}
19901 function. I then define a function called @code{gnus-run-at-time} that
19902 takes the same parameters as the Emacs @code{run-at-time}. When running
19903 Gnus under Emacs, the former function is just an alias for the latter.
19904 However, when running under XEmacs, the former is an alias for the
19905 following function:
19908 (defun gnus-xmas-run-at-time (time repeat function &rest args)
19912 (,function ,@@args))
19916 This sort of thing has been done for bunches of functions. Gnus does
19917 not redefine any native Emacs functions while running under XEmacs---it
19918 does this @code{defalias} thing with Gnus equivalents instead. Cleaner
19921 In the cases where the XEmacs function interface was obviously cleaner,
19922 I used it instead. For example @code{gnus-region-active-p} is an alias
19923 for @code{region-active-p} in XEmacs, whereas in Emacs it is a function.
19925 Of course, I could have chosen XEmacs as my native platform and done
19926 mapping functions the other way around. But I didn't. The performance
19927 hit these indirections impose on Gnus under XEmacs should be slight.
19930 @node Various File Formats
19931 @subsection Various File Formats
19934 * Active File Format:: Information on articles and groups available.
19935 * Newsgroups File Format:: Group descriptions.
19939 @node Active File Format
19940 @subsubsection Active File Format
19942 The active file lists all groups available on the server in
19943 question. It also lists the highest and lowest current article numbers
19946 Here's an excerpt from a typical active file:
19949 soc.motss 296030 293865 y
19950 alt.binaries.pictures.fractals 3922 3913 n
19951 comp.sources.unix 1605 1593 m
19952 comp.binaries.ibm.pc 5097 5089 y
19953 no.general 1000 900 y
19956 Here's a pseudo-BNF definition of this file:
19959 active = *group-line
19960 group-line = group space high-number space low-number space flag <NEWLINE>
19961 group = <non-white-space string>
19963 high-number = <non-negative integer>
19964 low-number = <positive integer>
19965 flag = "y" / "n" / "m" / "j" / "x" / "=" group
19968 For a full description of this file, see the manual pages for
19969 @samp{innd}, in particular @samp{active(5)}.
19972 @node Newsgroups File Format
19973 @subsubsection Newsgroups File Format
19975 The newsgroups file lists groups along with their descriptions. Not all
19976 groups on the server have to be listed, and not all groups in the file
19977 have to exist on the server. The file is meant purely as information to
19980 The format is quite simple; a group name, a tab, and the description.
19981 Here's the definition:
19985 line = group tab description <NEWLINE>
19986 group = <non-white-space string>
19988 description = <string>
19993 @node Emacs for Heathens
19994 @section Emacs for Heathens
19996 Believe it or not, but some people who use Gnus haven't really used
19997 Emacs much before they embarked on their journey on the Gnus Love Boat.
19998 If you are one of those unfortunates whom ``@kbd{M-C-a}'', ``kill the
19999 region'', and ``set @code{gnus-flargblossen} to an alist where the key
20000 is a regexp that is used for matching on the group name'' are magical
20001 phrases with little or no meaning, then this appendix is for you. If
20002 you are already familiar with Emacs, just ignore this and go fondle your
20006 * Keystrokes:: Entering text and executing commands.
20007 * Emacs Lisp:: The built-in Emacs programming language.
20012 @subsection Keystrokes
20016 Q: What is an experienced Emacs user?
20019 A: A person who wishes that the terminal had pedals.
20022 Yes, when you use Emacs, you are apt to use the control key, the shift
20023 key and the meta key a lot. This is very annoying to some people
20024 (notably @code{vi}le users), and the rest of us just love the hell out
20025 of it. Just give up and submit. Emacs really does stand for
20026 ``Escape-Meta-Alt-Control-Shift'', and not ``Editing Macros'', as you
20027 may have heard from other disreputable sources (like the Emacs author).
20029 The shift keys are normally located near your pinky fingers, and are
20030 normally used to get capital letters and stuff. You probably use it all
20031 the time. The control key is normally marked ``CTRL'' or something like
20032 that. The meta key is, funnily enough, never marked as such on any
20033 keyboard. The one I'm currently at has a key that's marked ``Alt'',
20034 which is the meta key on this keyboard. It's usually located somewhere
20035 to the left hand side of the keyboard, usually on the bottom row.
20037 Now, us Emacs people don't say ``press the meta-control-m key'',
20038 because that's just too inconvenient. We say ``press the @kbd{M-C-m}
20039 key''. @kbd{M-} is the prefix that means ``meta'' and ``C-'' is the
20040 prefix that means ``control''. So ``press @kbd{C-k}'' means ``press
20041 down the control key, and hold it down while you press @kbd{k}''.
20042 ``Press @kbd{M-C-k}'' means ``press down and hold down the meta key and
20043 the control key and then press @kbd{k}''. Simple, ay?
20045 This is somewhat complicated by the fact that not all keyboards have a
20046 meta key. In that case you can use the ``escape'' key. Then @kbd{M-k}
20047 means ``press escape, release escape, press @kbd{k}''. That's much more
20048 work than if you have a meta key, so if that's the case, I respectfully
20049 suggest you get a real keyboard with a meta key. You can't live without
20055 @subsection Emacs Lisp
20057 Emacs is the King of Editors because it's really a Lisp interpreter.
20058 Each and every key you tap runs some Emacs Lisp code snippet, and since
20059 Emacs Lisp is an interpreted language, that means that you can configure
20060 any key to run any arbitrary code. You just, like, do it.
20062 Gnus is written in Emacs Lisp, and is run as a bunch of interpreted
20063 functions. (These are byte-compiled for speed, but it's still
20064 interpreted.) If you decide that you don't like the way Gnus does
20065 certain things, it's trivial to have it do something a different way.
20066 (Well, at least if you know how to write Lisp code.) However, that's
20067 beyond the scope of this manual, so we are simply going to talk about
20068 some common constructs that you normally use in your @file{.emacs} file
20071 If you want to set the variable @code{gnus-florgbnize} to four (4), you
20072 write the following:
20075 (setq gnus-florgbnize 4)
20078 This function (really ``special form'') @code{setq} is the one that can
20079 set a variable to some value. This is really all you need to know. Now
20080 you can go and fill your @code{.emacs} file with lots of these to change
20083 If you have put that thing in your @code{.emacs} file, it will be read
20084 and @code{eval}ed (which is lisp-ese for ``run'') the next time you
20085 start Emacs. If you want to change the variable right away, simply say
20086 @kbd{C-x C-e} after the closing parenthesis. That will @code{eval} the
20087 previous ``form'', which is a simple @code{setq} statement here.
20089 Go ahead---just try it, if you're located at your Emacs. After you
20090 @kbd{C-x C-e}, you will see @samp{4} appear in the echo area, which
20091 is the return value of the form you @code{eval}ed.
20095 If the manual says ``set @code{gnus-read-active-file} to @code{some}'',
20099 (setq gnus-read-active-file 'some)
20102 On the other hand, if the manual says ``set @code{gnus-nntp-server} to
20103 @samp{nntp.ifi.uio.no}'', that means:
20106 (setq gnus-nntp-server "nntp.ifi.uio.no")
20109 So be careful not to mix up strings (the latter) with symbols (the
20110 former). The manual is unambiguous, but it can be confusing.
20113 @include gnus-faq.texi