1 ;;; gnus.el --- a newsreader for GNU Emacs
2 ;; Copyright (C) 1987,88,89,90,93,94,95,96 Free Software Foundation, Inc.
4 ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
5 ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 (eval '(run-hooks 'gnus-load-hook))
31 (defconst gnus-version-number "0.22"
32 "Version number for this version of Gnus.")
34 (defconst gnus-version (format "Red Gnus v%s" gnus-version-number)
35 "Version string for this version of Gnus.")
37 (defvar gnus-inhibit-startup-message nil
38 "*If non-nil, the startup message will not be displayed.")
40 ;;; Internal variables
42 (defvar gnus-group-buffer "*Group*")
48 (switch-to-buffer gnus-group-buffer)
49 (let ((buffer-read-only nil))
51 (unless gnus-inhibit-startup-message
52 (gnus-group-startup-message)
55 (defun gnus-indent-rigidly (start end arg)
56 "Indent rigidly using only spaces and no tabs."
59 (narrow-to-region start end)
60 (indent-rigidly start end arg)
61 ;; We translate tabs into spaces -- not everybody uses
62 ;; an 8-character tab.
63 (goto-char (point-min))
64 (while (search-forward "\t" nil t)
65 (replace-match " " t t)))))
67 (defun gnus-group-startup-message (&optional x y)
68 "Insert startup message in current buffer."
69 ;; Insert the message.
94 (gnus-indent-rigidly (point-min) (point-max)
95 (/ (max (- (window-width) (or x 46)) 0) 2))
96 (goto-char (point-min))
98 (let* ((pheight (count-lines (point-min) (point-max)))
99 (wheight (window-height))
100 (rest (- wheight pheight)))
101 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n)))
103 (goto-char (point-min))
104 (and (search-forward "Praxis" nil t)
105 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold))
106 (goto-char (point-min))
107 (setq mode-line-buffer-identification gnus-version)
108 (set-buffer-modified-p t))
111 (when (string-match "gnus" (format "%s" this-command))
120 ;; Fix by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
121 ;; If you want the cursor to go somewhere else, set these two
122 ;; functions in some startup hook to whatever you want.
123 (defalias 'gnus-summary-position-point 'gnus-goto-colon)
124 (defalias 'gnus-group-position-point 'gnus-goto-colon)
126 ;;; Various macros and substs.
128 (defun gnus-header-from (header)
129 (mail-header-from header))
131 (defmacro gnus-gethash (string hashtable)
132 "Get hash value of STRING in HASHTABLE."
133 `(symbol-value (intern-soft ,string ,hashtable)))
135 (defmacro gnus-sethash (string value hashtable)
136 "Set hash value. Arguments are STRING, VALUE, and HASHTABLE."
137 `(set (intern ,string ,hashtable) ,value))
138 (put 'nnheader-temp-write 'edebug-form-spec '(form form form))
140 (defmacro gnus-group-unread (group)
141 "Get the currently computed number of unread articles in GROUP."
142 `(car (gnus-gethash ,group gnus-newsrc-hashtb)))
144 (defmacro gnus-group-entry (group)
145 "Get the newsrc entry for GROUP."
146 `(gnus-gethash ,group gnus-newsrc-hashtb))
148 (defmacro gnus-active (group)
149 "Get active info on GROUP."
150 `(gnus-gethash ,group gnus-active-hashtb))
152 (defmacro gnus-set-active (group active)
153 "Set GROUP's active info."
154 `(gnus-sethash ,group ,active gnus-active-hashtb))
156 (defun gnus-alive-p ()
157 "Say whether Gnus is running or not."
158 (and gnus-group-buffer
159 (get-buffer gnus-group-buffer)
161 (set-buffer gnus-group-buffer)
162 (eq major-mode 'gnus-group-mode))))
164 ;; Info access macros.
166 (defmacro gnus-info-group (info)
168 (defmacro gnus-info-rank (info)
170 (defmacro gnus-info-read (info)
172 (defmacro gnus-info-marks (info)
174 (defmacro gnus-info-method (info)
176 (defmacro gnus-info-params (info)
179 (defmacro gnus-info-level (info)
180 `(let ((rank (gnus-info-rank ,info)))
184 (defmacro gnus-info-score (info)
185 `(let ((rank (gnus-info-rank ,info)))
186 (or (and (consp rank) (cdr rank)) 0)))
188 (defmacro gnus-info-set-group (info group)
189 `(setcar ,info ,group))
190 (defmacro gnus-info-set-rank (info rank)
191 `(setcar (nthcdr 1 ,info) ,rank))
192 (defmacro gnus-info-set-read (info read)
193 `(setcar (nthcdr 2 ,info) ,read))
194 (defmacro gnus-info-set-marks (info marks &optional extend)
196 `(gnus-info-set-entry ,info ,marks 3)
197 `(setcar (nthcdr 3 ,info) ,marks)))
198 (defmacro gnus-info-set-method (info method &optional extend)
200 `(gnus-info-set-entry ,info ,method 4)
201 `(setcar (nthcdr 4 ,info) ,method)))
202 (defmacro gnus-info-set-params (info params &optional extend)
204 `(gnus-info-set-entry ,info ,params 5)
205 `(setcar (nthcdr 5 ,info) ,params)))
207 (defun gnus-info-set-entry (info entry number)
208 ;; Extend the info until we have enough elements.
209 (while (< (length info) number)
210 (nconc info (list nil)))
212 (setcar (nthcdr number info) entry))
214 (defmacro gnus-info-set-level (info level)
215 `(let ((rank (cdr ,info)))
216 (if (consp (car rank))
217 (setcar (car rank) ,level)
218 (setcar rank ,level))))
219 (defmacro gnus-info-set-score (info score)
220 `(let ((rank (cdr ,info)))
221 (if (consp (car rank))
222 (setcdr (car rank) ,score)
223 (setcar rank (cons (car rank) ,score)))))
225 (defmacro gnus-get-info (group)
226 `(nth 2 (gnus-gethash ,group gnus-newsrc-hashtb)))
228 ;; Byte-compiler warning.
230 ;; Find out whether the gnus-visual TYPE is wanted.
231 (defun gnus-visual-p (&optional type class)
232 (and gnus-visual ; Has to be non-nil, at least.
233 (if (not type) ; We don't care about type.
235 (if (listp gnus-visual) ; It's a list, so we check it.
236 (or (memq type gnus-visual)
237 (memq class gnus-visual))
240 ;;; Load the compatability functions.
250 (defvar gnus-shutdown-alist nil)
252 (defun gnus-add-shutdown (function &rest symbols)
253 "Run FUNCTION whenever one of SYMBOLS is shut down."
254 (push (cons function symbols) gnus-shutdown-alist))
256 (defun gnus-shutdown (symbol)
257 "Shut down everything that waits for SYMBOL."
258 (let ((alist gnus-shutdown-alist)
260 (while (setq entry (pop alist))
261 (when (memq symbol (cdr entry))
262 (funcall (car entry))))))
266 ;;; Gnus Utility Functions
269 ;; Add the current buffer to the list of buffers to be killed on exit.
270 (defun gnus-add-current-to-buffer-list ()
271 (or (memq (current-buffer) gnus-buffer-list)
272 (setq gnus-buffer-list (cons (current-buffer) gnus-buffer-list))))
274 (defun gnus-version (&optional arg)
275 "Version number of this version of Gnus.
276 If ARG, insert string at point."
278 (let ((methods gnus-valid-select-methods)
281 ;; Go through all the legal select methods and add their version
282 ;; numbers to the total version string. Only the backends that are
283 ;; currently in use will have their message numbers taken into
286 (setq meth (intern (concat (caar methods) "-version")))
288 (stringp (symbol-value meth))
289 (setq mess (concat mess "; " (symbol-value meth))))
290 (setq methods (cdr methods)))
292 (insert (message mess))
295 (defun gnus-continuum-version (version)
296 "Return VERSION as a floating point number."
297 (when (or (string-match "^\\([^ ]+\\)? ?Gnus v?\\([0-9.]+\\)$" version)
298 (string-match "^\\(.?\\)gnus-\\([0-9.]+\\)$" version))
299 (let* ((alpha (and (match-beginning 1) (match-string 1 version)))
300 (number (match-string 2 version))
302 (string-match "\\([0-9]\\)\\.\\([0-9]+\\)\\.?\\([0-9]+\\)?" number)
303 (setq major (string-to-number (match-string 1 number)))
304 (setq minor (string-to-number (match-string 2 number)))
305 (setq least (if (match-beginning 3)
306 (string-to-number (match-string 3 number))
310 (format "%s00%02d%02d"
312 ((member alpha '("(ding)" "d")) "4.99")
313 ((member alpha '("September" "s")) "5.01")
314 ((member alpha '("Red" "r")) "5.03"))
316 (format "%d.%02d%02d" major minor least))))))
318 (defun gnus-info-find-node ()
319 "Find Info documentation of Gnus."
321 ;; Enlarge info window if needed.
322 (let (gnus-info-buffer)
323 (Info-goto-node (cadr (assq major-mode gnus-info-nodes)))
324 (setq gnus-info-buffer (current-buffer))
325 (gnus-configure-windows 'info)))
327 ;;; More various functions.
329 (defun gnus-group-read-only-p (&optional group)
330 "Check whether GROUP supports editing or not.
331 If GROUP is nil, `gnus-newsgroup-name' will be checked instead. Note
332 that that variable is buffer-local to the summary buffers."
333 (let ((group (or group gnus-newsgroup-name)))
334 (not (gnus-check-backend-function 'request-replace-article group))))
336 (defun gnus-group-total-expirable-p (group)
337 "Check whether GROUP is total-expirable or not."
338 (let ((params (gnus-group-find-parameter group)))
339 (or (memq 'total-expire params)
340 (cdr (assq 'total-expire params)) ; (total-expire . t)
341 (and gnus-total-expirable-newsgroups ; Check var.
342 (string-match gnus-total-expirable-newsgroups group)))))
344 (defun gnus-group-auto-expirable-p (group)
345 "Check whether GROUP is total-expirable or not."
346 (let ((params (gnus-group-find-parameter group)))
347 (or (memq 'auto-expire params)
348 (cdr (assq 'auto-expire params)) ; (auto-expire . t)
349 (and gnus-auto-expirable-newsgroups ; Check var.
350 (string-match gnus-auto-expirable-newsgroups group)))))
352 (defun gnus-virtual-group-p (group)
353 "Say whether GROUP is virtual or not."
354 (memq 'virtual (assoc (symbol-name (car (gnus-find-method-for-group group)))
355 gnus-valid-select-methods)))
357 (defun gnus-news-group-p (group &optional article)
358 "Return non-nil if GROUP (and ARTICLE) come from a news server."
359 (or (gnus-member-of-valid 'post group) ; Ordinary news group.
360 (and (gnus-member-of-valid 'post-mail group) ; Combined group.
361 (eq (gnus-request-type group article) 'news))))
363 ;; Returns a list of writable groups.
364 (defun gnus-writable-groups ()
365 (let ((alist gnus-newsrc-alist)
367 (while (setq group (car (pop alist)))
368 (unless (gnus-group-read-only-p group)
369 (push group groups)))
372 ;; Check whether to use long file names.
373 (defun gnus-use-long-file-name (symbol)
374 ;; The variable has to be set...
375 (and gnus-use-long-file-name
376 ;; If it isn't a list, then we return t.
377 (or (not (listp gnus-use-long-file-name))
378 ;; If it is a list, and the list contains `symbol', we
380 (not (memq symbol gnus-use-long-file-name)))))
382 ;; Generate a unique new group name.
383 (defun gnus-generate-new-group-name (leaf)
386 (while (gnus-gethash name gnus-newsrc-hashtb)
387 (setq name (concat leaf "<" (int-to-string (setq num (1+ num))) ">")))
390 (defun gnus-ephemeral-group-p (group)
391 "Say whether GROUP is ephemeral or not."
392 (gnus-group-get-parameter group 'quit-config))
394 (defun gnus-group-quit-config (group)
395 "Return the quit-config of GROUP."
396 (gnus-group-get-parameter group 'quit-config))
398 (defun gnus-simplify-mode-line ()
399 "Make mode lines a bit simpler."
400 (setq mode-line-modified "-- ")
401 (when (listp mode-line-format)
402 (make-local-variable 'mode-line-format)
403 (setq mode-line-format (copy-sequence mode-line-format))
404 (when (equal (nth 3 mode-line-format) " ")
405 (setcar (nthcdr 3 mode-line-format) " "))))
407 ;;; Servers and groups.
409 (defsubst gnus-server-add-address (method)
410 (let ((method-name (symbol-name (car method))))
411 (if (and (memq 'address (assoc method-name gnus-valid-select-methods))
412 (not (assq (intern (concat method-name "-address")) method)))
413 (append method (list (list (intern (concat method-name "-address"))
417 (defsubst gnus-server-get-method (group method)
418 ;; Input either a server name, and extended server name, or a
419 ;; select method, and return a select method.
420 (cond ((stringp method)
421 (gnus-server-to-method method))
422 ((equal method gnus-select-method)
424 ((and (stringp (car method)) group)
425 (gnus-server-extend-method group method))
426 ((and method (not group)
427 (equal (cadr method) ""))
430 (gnus-server-add-address method))))
432 (defun gnus-server-to-method (server)
433 "Map virtual server names to select methods."
435 ;; Is this a method, perhaps?
436 (and server (listp server) server)
437 ;; Perhaps this is the native server?
438 (and (equal server "native") gnus-select-method)
439 ;; It should be in the server alist.
440 (cdr (assoc server gnus-server-alist))
441 ;; If not, we look through all the opened server
442 ;; to see whether we can find it there.
443 (let ((opened gnus-opened-servers))
445 (not (equal server (format "%s:%s" (caaar opened)
450 (defmacro gnus-method-equal (ss1 ss2)
451 "Say whether two servers are equal."
455 (and (= (length s1) (length s2))
457 (while (and s1 (member (car s1) s2))
461 (defun gnus-server-equal (m1 m2)
462 "Say whether two methods are equal."
463 (let ((m1 (cond ((null m1) gnus-select-method)
464 ((stringp m1) (gnus-server-to-method m1))
466 (m2 (cond ((null m2) gnus-select-method)
467 ((stringp m2) (gnus-server-to-method m2))
469 (gnus-method-equal m1 m2)))
471 (defun gnus-servers-using-backend (backend)
472 "Return a list of known servers using BACKEND."
473 (let ((opened gnus-opened-servers)
476 (when (eq backend (caaar opened))
477 (push (caar opened) out))
481 (defun gnus-archive-server-wanted-p ()
482 "Say whether the user wants to use the archive server."
484 ((or (not gnus-message-archive-method)
485 (not gnus-message-archive-group))
487 ((and gnus-message-archive-method gnus-message-archive-group)
490 (let ((active (cadr (assq 'nnfolder-active-file
491 gnus-message-archive-method))))
493 (file-exists-p active))))))
495 (defun gnus-group-prefixed-name (group method)
496 "Return the whole name from GROUP and METHOD."
497 (and (stringp method) (setq method (gnus-server-to-method method)))
500 (concat (format "%s" (car method))
502 (or (assoc (format "%s" (car method))
503 (gnus-methods-using 'address))
504 (gnus-server-equal method gnus-message-archive-method))
506 (not (string= (nth 1 method) "")))
507 (concat "+" (nth 1 method)))
510 (defun gnus-group-real-prefix (group)
511 "Return the prefix of the current group name."
512 (if (string-match "^[^:]+:" group)
513 (substring group 0 (match-end 0))
516 (defun gnus-group-method (group)
517 "Return the server or method used for selecting GROUP."
518 (let ((prefix (gnus-group-real-prefix group)))
519 (if (equal prefix "")
521 (let ((servers gnus-opened-servers)
523 backend possible found)
524 (if (string-match "^[^\\+]+\\+" prefix)
525 (setq backend (intern (substring prefix 0 (1- (match-end 0))))
526 server (substring prefix (match-end 0) (1- (length prefix))))
527 (setq backend (intern (substring prefix 0 (1- (length prefix))))))
529 (when (eq (caaar servers) backend)
530 (setq possible (caar servers))
531 (when (equal (cadaar servers) server)
532 (setq found (caar servers))))
534 (or (car (rassoc found gnus-server-alist))
536 (car (rassoc possible gnus-server-alist))
538 (list backend server))))))
540 (defsubst gnus-secondary-method-p (method)
541 "Return whether METHOD is a secondary select method."
542 (let ((methods gnus-secondary-select-methods)
543 (gmethod (gnus-server-get-method nil method)))
545 (not (equal (gnus-server-get-method nil (car methods))
547 (setq methods (cdr methods)))
550 (defun gnus-group-foreign-p (group)
551 "Say whether a group is foreign or not."
552 (and (not (gnus-group-native-p group))
553 (not (gnus-group-secondary-p group))))
555 (defun gnus-group-native-p (group)
556 "Say whether the group is native or not."
557 (not (string-match ":" group)))
559 (defun gnus-group-secondary-p (group)
560 "Say whether the group is secondary or not."
561 (gnus-secondary-method-p (gnus-find-method-for-group group)))
563 (defun gnus-group-find-parameter (group &optional symbol)
564 "Return the group parameters for GROUP.
565 If SYMBOL, return the value of that symbol in the group parameters."
567 (set-buffer gnus-group-buffer)
568 (let ((parameters (funcall gnus-group-get-parameter-function group)))
570 (gnus-group-parameter-value parameters symbol)
573 (defun gnus-group-get-parameter (group &optional symbol)
574 "Return the group parameters for GROUP.
575 If SYMBOL, return the value of that symbol in the group parameters."
576 (let ((params (gnus-info-params (gnus-get-info group))))
578 (gnus-group-parameter-value params symbol)
581 (defun gnus-group-parameter-value (params symbol)
582 "Return the value of SYMBOL in group PARAMS."
583 (or (car (memq symbol params)) ; It's either a simple symbol
584 (cdr (assq symbol params)))) ; or a cons.
586 (defun gnus-group-add-parameter (group param)
587 "Add parameter PARAM to GROUP."
588 (let ((info (gnus-get-info group)))
590 () ; This is a dead group. We just ignore it.
591 ;; Cons the new param to the old one and update.
592 (gnus-group-set-info (cons param (gnus-info-params info))
595 (defun gnus-group-set-parameter (group name value)
596 "Set parameter NAME to VALUE in GROUP."
597 (let ((info (gnus-get-info group)))
599 () ; This is a dead group. We just ignore it.
600 (let ((old-params (gnus-info-params info))
601 (new-params (list (cons name value))))
603 (if (or (not (listp (car old-params)))
604 (not (eq (caar old-params) name)))
605 (setq new-params (append new-params (list (car old-params)))))
606 (setq old-params (cdr old-params)))
607 (gnus-group-set-info new-params group 'params)))))
609 (defun gnus-group-add-score (group &optional score)
610 "Add SCORE to the GROUP score.
611 If SCORE is nil, add 1 to the score of GROUP."
612 (let ((info (gnus-get-info group)))
614 (gnus-info-set-score info (+ (gnus-info-score info) (or score 1))))))
616 ;; Function written by Stainless Steel Rat <ratinox@peorth.gweep.net>
617 (defun gnus-short-group-name (group &optional levels)
618 "Collapse GROUP name LEVELS.
619 Select methods are stripped and any remote host name is stripped down to
621 (let* ((name "") (foreign "") (depth -1) (skip 1)
624 (while (string-match "\\." group skip)
625 (setq skip (match-end 0)
628 ;; separate foreign select method from group name and collapse.
629 ;; if method contains a server, collapse to non-domain server name,
630 ;; otherwise collapse to select method
631 (if (string-match ":" group)
632 (cond ((string-match "+" group)
633 (let* ((plus (string-match "+" group))
634 (colon (string-match ":" group))
635 (dot (string-match "\\." group)))
636 (setq foreign (concat
637 (substring group (+ 1 plus)
638 (cond ((null dot) colon)
639 ((< colon dot) colon)
640 ((< dot colon) dot))) ":")
641 group (substring group (+ 1 colon))
644 (let* ((colon (string-match ":" group)))
645 (setq foreign (concat (substring group 0 (+ 1 colon)))
646 group (substring group (+ 1 colon)))
648 ;; collapse group name leaving LEVELS uncollapsed elements
650 (if (and (string-match "\\." group) (> levels 0))
651 (setq name (concat name (substring group 0 1))
652 group (substring group (match-end 0))
654 name (concat name "."))
655 (setq name (concat foreign name group)
662 ;;; Kill file handling.
665 (defun gnus-apply-kill-file ()
666 "Apply a kill file to the current newsgroup.
667 Returns the number of articles marked as read."
668 (if (or (file-exists-p (gnus-newsgroup-kill-file nil))
669 (file-exists-p (gnus-newsgroup-kill-file gnus-newsgroup-name)))
670 (gnus-apply-kill-file-internal)
673 (defun gnus-kill-save-kill-buffer ()
674 (let ((file (gnus-newsgroup-kill-file gnus-newsgroup-name)))
675 (when (get-file-buffer file)
677 (set-buffer (get-file-buffer file))
678 (and (buffer-modified-p) (save-buffer))
679 (kill-buffer (current-buffer))))))
681 (defvar gnus-kill-file-name "KILL"
682 "Suffix of the kill files.")
684 (defun gnus-newsgroup-kill-file (newsgroup)
685 "Return the name of a kill file name for NEWSGROUP.
686 If NEWSGROUP is nil, return the global kill file name instead."
688 ;; The global KILL file is placed at top of the directory.
689 ((or (null newsgroup)
690 (string-equal newsgroup ""))
691 (expand-file-name gnus-kill-file-name
692 gnus-kill-files-directory))
693 ;; Append ".KILL" to newsgroup name.
694 ((gnus-use-long-file-name 'not-kill)
695 (expand-file-name (concat (gnus-newsgroup-savable-name newsgroup)
696 "." gnus-kill-file-name)
697 gnus-kill-files-directory))
698 ;; Place "KILL" under the hierarchical directory.
700 (expand-file-name (concat (gnus-newsgroup-directory-form newsgroup)
701 "/" gnus-kill-file-name)
702 gnus-kill-files-directory))))
706 (defun gnus-member-of-valid (symbol group)
707 "Find out if GROUP has SYMBOL as part of its \"valid\" spec."
709 (symbol-name (car (gnus-find-method-for-group group)))
710 gnus-valid-select-methods)))
712 (defun gnus-method-option-p (method option)
713 "Return non-nil if select METHOD has OPTION as a parameter."
714 (when (stringp method)
715 (setq method (gnus-server-to-method method)))
716 (memq option (assoc (format "%s" (car method))
717 gnus-valid-select-methods)))
719 (defun gnus-server-extend-method (group method)
720 ;; This function "extends" a virtual server. If the server is
721 ;; "hello", and the select method is ("hello" (my-var "something"))
722 ;; in the group "alt.alt", this will result in a new virtual server
723 ;; called "hello+alt.alt".
726 (if (gnus-server-equal method gnus-select-method) gnus-select-method
727 (cdr (assoc (car method) gnus-server-alist))))))
730 (setcar (cdr entry) (concat (nth 1 entry) "+" group))
731 (nconc entry (cdr method)))))
733 (defun gnus-server-status (method)
734 "Return the status of METHOD."
735 (nth 1 (assoc method gnus-opened-servers)))
737 (defun gnus-group-name-to-method (group)
738 "Return a select method suitable for GROUP."
739 (if (string-match ":" group)
740 (let ((server (substring group 0 (match-beginning 0))))
741 (if (string-match "\\+" server)
742 (list (intern (substring server 0 (match-beginning 0)))
743 (substring server (match-end 0)))
744 (list (intern server) "")))
747 (defun gnus-find-method-for-group (group &optional info)
748 "Find the select method that GROUP uses."
749 (or gnus-override-method
752 (let ((info (or info (gnus-get-info group)))
755 (not (setq method (gnus-info-method info)))
756 (equal method "native"))
759 (cond ((stringp method)
760 (gnus-server-to-method method))
761 ((stringp (car method))
762 (gnus-server-extend-method group method))
765 (cond ((equal (cadr method) "")
767 ((null (cadr method))
768 (list (car method) ""))
770 (gnus-server-add-address method)))))))
772 (defun gnus-check-backend-function (func group)
773 "Check whether GROUP supports function FUNC."
774 (let ((method (if (stringp group) (car (gnus-find-method-for-group group))
776 (fboundp (intern (format "%s-%s" method func)))))
778 (defun gnus-methods-using (feature)
779 "Find all methods that have FEATURE."
780 (let ((valids gnus-valid-select-methods)
783 (if (memq feature (car valids))
784 (setq outs (cons (car valids) outs)))
785 (setq valids (cdr valids)))
788 (defun gnus-read-method (prompt)
789 "Prompt the user for a method.
790 Allow completion over sensible values."
793 prompt (append gnus-valid-select-methods gnus-server-alist)
794 nil t nil 'gnus-method-history)))
797 (setq method gnus-select-method))
798 ((assoc method gnus-valid-select-methods)
799 (list (intern method)
800 (if (memq 'prompt-address
801 (assoc method gnus-valid-select-methods))
802 (read-string "Address: ")
804 ((assoc method gnus-server-alist)
807 (list (intern method) "")))))
809 ;;; User-level commands.
812 (defun gnus-slave-no-server (&optional arg)
813 "Read network news as a slave, without connecting to local server"
815 (gnus-no-server arg t))
818 (defun gnus-no-server (&optional arg slave)
820 If ARG is a positive number, Gnus will use that as the
821 startup level. If ARG is nil, Gnus will be started at level 2.
822 If ARG is non-nil and not a positive number, Gnus will
823 prompt the user for the name of an NNTP server to use.
824 As opposed to `gnus', this command will not connect to the local server."
826 (gnus-no-server-1 arg slave))
829 (defun gnus-slave (&optional arg)
830 "Read news as a slave."
832 (gnus arg nil 'slave))
835 (defun gnus-other-frame (&optional arg)
836 "Pop up a frame to read news."
838 (if (get-buffer gnus-group-buffer)
839 (let ((pop-up-frames t))
841 (select-frame (make-frame))
845 (defun gnus (&optional arg dont-connect slave)
847 If ARG is non-nil and a positive number, Gnus will use that as the
848 startup level. If ARG is non-nil and not a positive number, Gnus will
849 prompt the user for the name of an NNTP server to use."
851 (gnus-1 arg dont-connect slave))
853 ;; Allow redefinition of Gnus functions.
859 ;;; gnus.el ends here