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 "0.18"
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))
119 ;; Fix by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
120 ;; If you want the cursor to go somewhere else, set these two
121 ;; functions in some startup hook to whatever you want.
122 (defalias 'gnus-summary-position-point 'gnus-goto-colon)
123 (defalias 'gnus-group-position-point 'gnus-goto-colon)
125 ;;; Various macros and substs.
127 (defun gnus-header-from (header)
128 (mail-header-from header))
130 (defmacro gnus-gethash (string hashtable)
131 "Get hash value of STRING in HASHTABLE."
132 `(symbol-value (intern-soft ,string ,hashtable)))
134 (defmacro gnus-sethash (string value hashtable)
135 "Set hash value. Arguments are STRING, VALUE, and HASHTABLE."
136 `(set (intern ,string ,hashtable) ,value))
137 (put 'nnheader-temp-write 'edebug-form-spec '(form form form))
139 (defmacro gnus-group-unread (group)
140 "Get the currently computed number of unread articles in GROUP."
141 `(car (gnus-gethash ,group gnus-newsrc-hashtb)))
143 (defmacro gnus-group-entry (group)
144 "Get the newsrc entry for GROUP."
145 `(gnus-gethash ,group gnus-newsrc-hashtb))
147 (defmacro gnus-active (group)
148 "Get active info on GROUP."
149 `(gnus-gethash ,group gnus-active-hashtb))
151 (defmacro gnus-set-active (group active)
152 "Set GROUP's active info."
153 `(gnus-sethash ,group ,active gnus-active-hashtb))
155 (defun gnus-alive-p ()
156 "Say whether Gnus is running or not."
157 (and gnus-group-buffer
158 (get-buffer gnus-group-buffer)
160 (set-buffer gnus-group-buffer)
161 (eq major-mode 'gnus-group-mode))))
163 ;; Info access macros.
165 (defmacro gnus-info-group (info)
167 (defmacro gnus-info-rank (info)
169 (defmacro gnus-info-read (info)
171 (defmacro gnus-info-marks (info)
173 (defmacro gnus-info-method (info)
175 (defmacro gnus-info-params (info)
178 (defmacro gnus-info-level (info)
179 `(let ((rank (gnus-info-rank ,info)))
183 (defmacro gnus-info-score (info)
184 `(let ((rank (gnus-info-rank ,info)))
185 (or (and (consp rank) (cdr rank)) 0)))
187 (defmacro gnus-info-set-group (info group)
188 `(setcar ,info ,group))
189 (defmacro gnus-info-set-rank (info rank)
190 `(setcar (nthcdr 1 ,info) ,rank))
191 (defmacro gnus-info-set-read (info read)
192 `(setcar (nthcdr 2 ,info) ,read))
193 (defmacro gnus-info-set-marks (info marks &optional extend)
195 `(gnus-info-set-entry ,info ,marks 3)
196 `(setcar (nthcdr 3 ,info) ,marks)))
197 (defmacro gnus-info-set-method (info method &optional extend)
199 `(gnus-info-set-entry ,info ,method 4)
200 `(setcar (nthcdr 4 ,info) ,method)))
201 (defmacro gnus-info-set-params (info params &optional extend)
203 `(gnus-info-set-entry ,info ,params 5)
204 `(setcar (nthcdr 5 ,info) ,params)))
206 (defun gnus-info-set-entry (info entry number)
207 ;; Extend the info until we have enough elements.
208 (while (< (length info) number)
209 (nconc info (list nil)))
211 (setcar (nthcdr number info) entry))
213 (defmacro gnus-info-set-level (info level)
214 `(let ((rank (cdr ,info)))
215 (if (consp (car rank))
216 (setcar (car rank) ,level)
217 (setcar rank ,level))))
218 (defmacro gnus-info-set-score (info score)
219 `(let ((rank (cdr ,info)))
220 (if (consp (car rank))
221 (setcdr (car rank) ,score)
222 (setcar rank (cons (car rank) ,score)))))
224 (defmacro gnus-get-info (group)
225 `(nth 2 (gnus-gethash ,group gnus-newsrc-hashtb)))
227 ;; Byte-compiler warning.
229 ;; Find out whether the gnus-visual TYPE is wanted.
230 (defun gnus-visual-p (&optional type class)
231 (and gnus-visual ; Has to be non-nil, at least.
232 (if (not type) ; We don't care about type.
234 (if (listp gnus-visual) ; It's a list, so we check it.
235 (or (memq type gnus-visual)
236 (memq class gnus-visual))
239 ;;; Load the compatability functions.
249 (defvar gnus-shutdown-alist nil)
251 (defun gnus-add-shutdown (function &rest symbols)
252 "Run FUNCTION whenever one of SYMBOLS is shut down."
253 (push (cons function symbols) gnus-shutdown-alist))
255 (defun gnus-shutdown (symbol)
256 "Shut down everything that waits for SYMBOL."
257 (let ((alist gnus-shutdown-alist)
259 (while (setq entry (pop alist))
260 (when (memq symbol (cdr entry))
261 (funcall (car entry))))))
265 ;;; Gnus Utility Functions
268 ;; Add the current buffer to the list of buffers to be killed on exit.
269 (defun gnus-add-current-to-buffer-list ()
270 (or (memq (current-buffer) gnus-buffer-list)
271 (setq gnus-buffer-list (cons (current-buffer) gnus-buffer-list))))
273 (defun gnus-version (&optional arg)
274 "Version number of this version of Gnus.
275 If ARG, insert string at point."
277 (let ((methods gnus-valid-select-methods)
280 ;; Go through all the legal select methods and add their version
281 ;; numbers to the total version string. Only the backends that are
282 ;; currently in use will have their message numbers taken into
285 (setq meth (intern (concat (caar methods) "-version")))
287 (stringp (symbol-value meth))
288 (setq mess (concat mess "; " (symbol-value meth))))
289 (setq methods (cdr methods)))
291 (insert (message mess))
294 (defun gnus-continuum-version (version)
295 "Return VERSION as a floating point number."
296 (when (or (string-match "^\\([^ ]+\\)? ?Gnus v?\\([0-9.]+\\)$" version)
297 (string-match "^\\(.?\\)gnus-\\([0-9.]+\\)$" version))
298 (let* ((alpha (and (match-beginning 1) (match-string 1 version)))
299 (number (match-string 2 version))
301 (string-match "\\([0-9]\\)\\.\\([0-9]+\\)\\.?\\([0-9]+\\)?" number)
302 (setq major (string-to-number (match-string 1 number)))
303 (setq minor (string-to-number (match-string 2 number)))
304 (setq least (if (match-beginning 3)
305 (string-to-number (match-string 3 number))
309 (format "%s00%02d%02d"
311 ((member alpha '("(ding)" "d")) "4.99")
312 ((member alpha '("September" "s")) "5.01")
313 ((member alpha '("Red" "r")) "5.03"))
315 (format "%d.%02d%02d" major minor least))))))
317 (defun gnus-info-find-node ()
318 "Find Info documentation of Gnus."
320 ;; Enlarge info window if needed.
321 (let (gnus-info-buffer)
322 (Info-goto-node (cadr (assq major-mode gnus-info-nodes)))
323 (setq gnus-info-buffer (current-buffer))
324 (gnus-configure-windows 'info)))
326 ;;; More various functions.
328 (defun gnus-group-read-only-p (&optional group)
329 "Check whether GROUP supports editing or not.
330 If GROUP is nil, `gnus-newsgroup-name' will be checked instead. Note
331 that that variable is buffer-local to the summary buffers."
332 (let ((group (or group gnus-newsgroup-name)))
333 (not (gnus-check-backend-function 'request-replace-article group))))
335 (defun gnus-group-total-expirable-p (group)
336 "Check whether GROUP is total-expirable or not."
337 (let ((params (gnus-group-find-parameter group)))
338 (or (memq 'total-expire params)
339 (cdr (assq 'total-expire params)) ; (total-expire . t)
340 (and gnus-total-expirable-newsgroups ; Check var.
341 (string-match gnus-total-expirable-newsgroups group)))))
343 (defun gnus-group-auto-expirable-p (group)
344 "Check whether GROUP is total-expirable or not."
345 (let ((params (gnus-group-find-parameter group)))
346 (or (memq 'auto-expire params)
347 (cdr (assq 'auto-expire params)) ; (auto-expire . t)
348 (and gnus-auto-expirable-newsgroups ; Check var.
349 (string-match gnus-auto-expirable-newsgroups group)))))
351 (defun gnus-virtual-group-p (group)
352 "Say whether GROUP is virtual or not."
353 (memq 'virtual (assoc (symbol-name (car (gnus-find-method-for-group group)))
354 gnus-valid-select-methods)))
356 (defun gnus-news-group-p (group &optional article)
357 "Return non-nil if GROUP (and ARTICLE) come from a news server."
358 (or (gnus-member-of-valid 'post group) ; Ordinary news group.
359 (and (gnus-member-of-valid 'post-mail group) ; Combined group.
360 (eq (gnus-request-type group article) 'news))))
362 ;; Returns a list of writable groups.
363 (defun gnus-writable-groups ()
364 (let ((alist gnus-newsrc-alist)
366 (while (setq group (car (pop alist)))
367 (unless (gnus-group-read-only-p group)
368 (push group groups)))
371 ;; Check whether to use long file names.
372 (defun gnus-use-long-file-name (symbol)
373 ;; The variable has to be set...
374 (and gnus-use-long-file-name
375 ;; If it isn't a list, then we return t.
376 (or (not (listp gnus-use-long-file-name))
377 ;; If it is a list, and the list contains `symbol', we
379 (not (memq symbol gnus-use-long-file-name)))))
381 ;; Generate a unique new group name.
382 (defun gnus-generate-new-group-name (leaf)
385 (while (gnus-gethash name gnus-newsrc-hashtb)
386 (setq name (concat leaf "<" (int-to-string (setq num (1+ num))) ">")))
389 (defun gnus-ephemeral-group-p (group)
390 "Say whether GROUP is ephemeral or not."
391 (gnus-group-get-parameter group 'quit-config))
393 (defun gnus-group-quit-config (group)
394 "Return the quit-config of GROUP."
395 (gnus-group-get-parameter group 'quit-config))
397 (defun gnus-simplify-mode-line ()
398 "Make mode lines a bit simpler."
399 (setq mode-line-modified "-- ")
400 (when (listp mode-line-format)
401 (make-local-variable 'mode-line-format)
402 (setq mode-line-format (copy-sequence mode-line-format))
403 (when (equal (nth 3 mode-line-format) " ")
404 (setcar (nthcdr 3 mode-line-format) " "))))
406 ;;; Servers and groups.
408 (defsubst gnus-server-add-address (method)
409 (let ((method-name (symbol-name (car method))))
410 (if (and (memq 'address (assoc method-name gnus-valid-select-methods))
411 (not (assq (intern (concat method-name "-address")) method)))
412 (append method (list (list (intern (concat method-name "-address"))
416 (defsubst gnus-server-get-method (group method)
417 ;; Input either a server name, and extended server name, or a
418 ;; select method, and return a select method.
419 (cond ((stringp method)
420 (gnus-server-to-method method))
421 ((equal method gnus-select-method)
423 ((and (stringp (car method)) group)
424 (gnus-server-extend-method group method))
425 ((and method (not group)
426 (equal (cadr method) ""))
429 (gnus-server-add-address method))))
431 (defun gnus-server-to-method (server)
432 "Map virtual server names to select methods."
434 ;; Is this a method, perhaps?
435 (and server (listp server) server)
436 ;; Perhaps this is the native server?
437 (and (equal server "native") gnus-select-method)
438 ;; It should be in the server alist.
439 (cdr (assoc server gnus-server-alist))
440 ;; If not, we look through all the opened server
441 ;; to see whether we can find it there.
442 (let ((opened gnus-opened-servers))
444 (not (equal server (format "%s:%s" (caaar opened)
449 (defmacro gnus-method-equal (ss1 ss2)
450 "Say whether two servers are equal."
454 (and (= (length s1) (length s2))
456 (while (and s1 (member (car s1) s2))
460 (defun gnus-server-equal (m1 m2)
461 "Say whether two methods are equal."
462 (let ((m1 (cond ((null m1) gnus-select-method)
463 ((stringp m1) (gnus-server-to-method m1))
465 (m2 (cond ((null m2) gnus-select-method)
466 ((stringp m2) (gnus-server-to-method m2))
468 (gnus-method-equal m1 m2)))
470 (defun gnus-servers-using-backend (backend)
471 "Return a list of known servers using BACKEND."
472 (let ((opened gnus-opened-servers)
475 (when (eq backend (caaar opened))
476 (push (caar opened) out))
480 (defun gnus-archive-server-wanted-p ()
481 "Say whether the user wants to use the archive server."
483 ((or (not gnus-message-archive-method)
484 (not gnus-message-archive-group))
486 ((and gnus-message-archive-method gnus-message-archive-group)
489 (let ((active (cadr (assq 'nnfolder-active-file
490 gnus-message-archive-method))))
492 (file-exists-p active))))))
494 (defun gnus-group-prefixed-name (group method)
495 "Return the whole name from GROUP and METHOD."
496 (and (stringp method) (setq method (gnus-server-to-method method)))
499 (concat (format "%s" (car method))
501 (or (assoc (format "%s" (car method))
502 (gnus-methods-using 'address))
503 (gnus-server-equal method gnus-message-archive-method))
505 (not (string= (nth 1 method) "")))
506 (concat "+" (nth 1 method)))
509 (defun gnus-group-real-prefix (group)
510 "Return the prefix of the current group name."
511 (if (string-match "^[^:]+:" group)
512 (substring group 0 (match-end 0))
515 (defun gnus-group-method (group)
516 "Return the server or method used for selecting GROUP."
517 (let ((prefix (gnus-group-real-prefix group)))
518 (if (equal prefix "")
520 (let ((servers gnus-opened-servers)
522 backend possible found)
523 (if (string-match "^[^\\+]+\\+" prefix)
524 (setq backend (intern (substring prefix 0 (1- (match-end 0))))
525 server (substring prefix (match-end 0) (1- (length prefix))))
526 (setq backend (intern (substring prefix 0 (1- (length prefix))))))
528 (when (eq (caaar servers) backend)
529 (setq possible (caar servers))
530 (when (equal (cadaar servers) server)
531 (setq found (caar servers))))
533 (or (car (rassoc found gnus-server-alist))
535 (car (rassoc possible gnus-server-alist))
537 (list backend server))))))
539 (defsubst gnus-secondary-method-p (method)
540 "Return whether METHOD is a secondary select method."
541 (let ((methods gnus-secondary-select-methods)
542 (gmethod (gnus-server-get-method nil method)))
544 (not (equal (gnus-server-get-method nil (car methods))
546 (setq methods (cdr methods)))
549 (defun gnus-group-foreign-p (group)
550 "Say whether a group is foreign or not."
551 (and (not (gnus-group-native-p group))
552 (not (gnus-group-secondary-p group))))
554 (defun gnus-group-native-p (group)
555 "Say whether the group is native or not."
556 (not (string-match ":" group)))
558 (defun gnus-group-secondary-p (group)
559 "Say whether the group is secondary or not."
560 (gnus-secondary-method-p (gnus-find-method-for-group group)))
562 (defun gnus-group-find-parameter (group &optional symbol)
563 "Return the group parameters for GROUP.
564 If SYMBOL, return the value of that symbol in the group parameters."
566 (set-buffer gnus-group-buffer)
567 (let ((parameters (funcall gnus-group-get-parameter-function group)))
569 (gnus-group-parameter-value parameters symbol)
572 (defun gnus-group-get-parameter (group &optional symbol)
573 "Return the group parameters for GROUP.
574 If SYMBOL, return the value of that symbol in the group parameters."
575 (let ((params (gnus-info-params (gnus-get-info group))))
577 (gnus-group-parameter-value params symbol)
580 (defun gnus-group-parameter-value (params symbol)
581 "Return the value of SYMBOL in group PARAMS."
582 (or (car (memq symbol params)) ; It's either a simple symbol
583 (cdr (assq symbol params)))) ; or a cons.
585 (defun gnus-group-add-parameter (group param)
586 "Add parameter PARAM to GROUP."
587 (let ((info (gnus-get-info group)))
589 () ; This is a dead group. We just ignore it.
590 ;; Cons the new param to the old one and update.
591 (gnus-group-set-info (cons param (gnus-info-params info))
594 (defun gnus-group-set-parameter (group name value)
595 "Set parameter NAME to VALUE in GROUP."
596 (let ((info (gnus-get-info group)))
598 () ; This is a dead group. We just ignore it.
599 (let ((old-params (gnus-info-params info))
600 (new-params (list (cons name value))))
602 (if (or (not (listp (car old-params)))
603 (not (eq (caar old-params) name)))
604 (setq new-params (append new-params (list (car old-params)))))
605 (setq old-params (cdr old-params)))
606 (gnus-group-set-info new-params group 'params)))))
608 (defun gnus-group-add-score (group &optional score)
609 "Add SCORE to the GROUP score.
610 If SCORE is nil, add 1 to the score of GROUP."
611 (let ((info (gnus-get-info group)))
613 (gnus-info-set-score info (+ (gnus-info-score info) (or score 1))))))
615 ;; Function written by Stainless Steel Rat <ratinox@peorth.gweep.net>
616 (defun gnus-short-group-name (group &optional levels)
617 "Collapse GROUP name LEVELS.
618 Select methods are stripped and any remote host name is stripped down to
620 (let* ((name "") (foreign "") (depth -1) (skip 1)
623 (while (string-match "\\." group skip)
624 (setq skip (match-end 0)
627 ;; separate foreign select method from group name and collapse.
628 ;; if method contains a server, collapse to non-domain server name,
629 ;; otherwise collapse to select method
630 (if (string-match ":" group)
631 (cond ((string-match "+" group)
632 (let* ((plus (string-match "+" group))
633 (colon (string-match ":" group))
634 (dot (string-match "\\." group)))
635 (setq foreign (concat
636 (substring group (+ 1 plus)
637 (cond ((null dot) colon)
638 ((< colon dot) colon)
639 ((< dot colon) dot))) ":")
640 group (substring group (+ 1 colon))
643 (let* ((colon (string-match ":" group)))
644 (setq foreign (concat (substring group 0 (+ 1 colon)))
645 group (substring group (+ 1 colon)))
647 ;; collapse group name leaving LEVELS uncollapsed elements
649 (if (and (string-match "\\." group) (> levels 0))
650 (setq name (concat name (substring group 0 1))
651 group (substring group (match-end 0))
653 name (concat name "."))
654 (setq name (concat foreign name group)
661 ;;; Kill file handling.
664 (defun gnus-apply-kill-file ()
665 "Apply a kill file to the current newsgroup.
666 Returns the number of articles marked as read."
667 (if (or (file-exists-p (gnus-newsgroup-kill-file nil))
668 (file-exists-p (gnus-newsgroup-kill-file gnus-newsgroup-name)))
669 (gnus-apply-kill-file-internal)
672 (defun gnus-kill-save-kill-buffer ()
673 (let ((file (gnus-newsgroup-kill-file gnus-newsgroup-name)))
674 (when (get-file-buffer file)
676 (set-buffer (get-file-buffer file))
677 (and (buffer-modified-p) (save-buffer))
678 (kill-buffer (current-buffer))))))
680 (defvar gnus-kill-file-name "KILL"
681 "Suffix of the kill files.")
683 (defun gnus-newsgroup-kill-file (newsgroup)
684 "Return the name of a kill file name for NEWSGROUP.
685 If NEWSGROUP is nil, return the global kill file name instead."
687 ;; The global KILL file is placed at top of the directory.
688 ((or (null newsgroup)
689 (string-equal newsgroup ""))
690 (expand-file-name gnus-kill-file-name
691 gnus-kill-files-directory))
692 ;; Append ".KILL" to newsgroup name.
693 ((gnus-use-long-file-name 'not-kill)
694 (expand-file-name (concat (gnus-newsgroup-savable-name newsgroup)
695 "." gnus-kill-file-name)
696 gnus-kill-files-directory))
697 ;; Place "KILL" under the hierarchical directory.
699 (expand-file-name (concat (gnus-newsgroup-directory-form newsgroup)
700 "/" gnus-kill-file-name)
701 gnus-kill-files-directory))))
705 (defun gnus-member-of-valid (symbol group)
706 "Find out if GROUP has SYMBOL as part of its \"valid\" spec."
708 (symbol-name (car (gnus-find-method-for-group group)))
709 gnus-valid-select-methods)))
711 (defun gnus-method-option-p (method option)
712 "Return non-nil if select METHOD has OPTION as a parameter."
713 (when (stringp method)
714 (setq method (gnus-server-to-method method)))
715 (memq option (assoc (format "%s" (car method))
716 gnus-valid-select-methods)))
718 (defun gnus-server-extend-method (group method)
719 ;; This function "extends" a virtual server. If the server is
720 ;; "hello", and the select method is ("hello" (my-var "something"))
721 ;; in the group "alt.alt", this will result in a new virtual server
722 ;; called "hello+alt.alt".
725 (if (gnus-server-equal method gnus-select-method) gnus-select-method
726 (cdr (assoc (car method) gnus-server-alist))))))
729 (setcar (cdr entry) (concat (nth 1 entry) "+" group))
730 (nconc entry (cdr method)))))
732 (defun gnus-server-status (method)
733 "Return the status of METHOD."
734 (nth 1 (assoc method gnus-opened-servers)))
736 (defun gnus-group-name-to-method (group)
737 "Return a select method suitable for GROUP."
738 (if (string-match ":" group)
739 (let ((server (substring group 0 (match-beginning 0))))
740 (if (string-match "\\+" server)
741 (list (intern (substring server 0 (match-beginning 0)))
742 (substring server (match-end 0)))
743 (list (intern server) "")))
746 (defun gnus-find-method-for-group (group &optional info)
747 "Find the select method that GROUP uses."
748 (or gnus-override-method
751 (let ((info (or info (gnus-get-info group)))
754 (not (setq method (gnus-info-method info)))
755 (equal method "native"))
758 (cond ((stringp method)
759 (gnus-server-to-method method))
760 ((stringp (car method))
761 (gnus-server-extend-method group method))
764 (cond ((equal (cadr method) "")
766 ((null (cadr method))
767 (list (car method) ""))
769 (gnus-server-add-address method)))))))
771 (defun gnus-check-backend-function (func group)
772 "Check whether GROUP supports function FUNC."
773 (let ((method (if (stringp group) (car (gnus-find-method-for-group group))
775 (fboundp (intern (format "%s-%s" method func)))))
777 (defun gnus-methods-using (feature)
778 "Find all methods that have FEATURE."
779 (let ((valids gnus-valid-select-methods)
782 (if (memq feature (car valids))
783 (setq outs (cons (car valids) outs)))
784 (setq valids (cdr valids)))
787 (defun gnus-read-method (prompt)
788 "Prompt the user for a method.
789 Allow completion over sensible values."
792 prompt (append gnus-valid-select-methods gnus-server-alist)
793 nil t nil 'gnus-method-history)))
796 (setq method gnus-select-method))
797 ((assoc method gnus-valid-select-methods)
798 (list (intern method)
799 (if (memq 'prompt-address
800 (assoc method gnus-valid-select-methods))
801 (read-string "Address: ")
803 ((assoc method gnus-server-alist)
806 (list (intern method) "")))))
808 ;;; User-level commands.
811 (defun gnus-slave-no-server (&optional arg)
812 "Read network news as a slave, without connecting to local server"
814 (gnus-no-server arg t))
817 (defun gnus-no-server (&optional arg slave)
819 If ARG is a positive number, Gnus will use that as the
820 startup level. If ARG is nil, Gnus will be started at level 2.
821 If ARG is non-nil and not a positive number, Gnus will
822 prompt the user for the name of an NNTP server to use.
823 As opposed to `gnus', this command will not connect to the local server."
825 (gnus-no-server-1 arg slave))
828 (defun gnus-slave (&optional arg)
829 "Read news as a slave."
831 (gnus arg nil 'slave))
834 (defun gnus-other-frame (&optional arg)
835 "Pop up a frame to read news."
837 (if (get-buffer gnus-group-buffer)
838 (let ((pop-up-frames t))
840 (select-frame (make-frame))
844 (defun gnus (&optional arg dont-connect slave)
846 If ARG is non-nil and a positive number, Gnus will use that as the
847 startup level. If ARG is non-nil and not a positive number, Gnus will
848 prompt the user for the name of an NNTP server to use."
850 (gnus-1 arg dont-connect slave))
852 ;; Allow redefinition of Gnus functions.
858 ;;; gnus.el ends here