1 ;;; gnus-agent.el --- unplugged support for Gnus
2 ;; Copyright (C) 1997,98,99 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; This file is part of GNU Emacs.
7 ;; GNU Emacs is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GNU Emacs; see the file COPYING. If not, write to the
19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 ;; Boston, MA 02111-1307, USA.
32 (require 'gnus-score))
34 (defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
35 "Where the Gnus agent will store its files."
39 (defcustom gnus-agent-plugged-hook nil
40 "Hook run when plugging into the network."
44 (defcustom gnus-agent-unplugged-hook nil
45 "Hook run when unplugging from the network."
49 (defcustom gnus-agent-handle-level gnus-level-subscribed
50 "Groups on levels higher than this variable will be ignored by the Agent."
54 (defcustom gnus-agent-expire-days 7
55 "Read articles older than this will be expired."
59 (defcustom gnus-agent-expire-all nil
60 "If non-nil, also expire unread, ticked and dormant articles.
61 If nil, only read articles will be expired."
65 (defcustom gnus-agent-group-mode-hook nil
66 "Hook run in Agent group minor modes."
70 (defcustom gnus-agent-summary-mode-hook nil
71 "Hook run in Agent summary minor modes."
75 (defcustom gnus-agent-server-mode-hook nil
76 "Hook run in Agent summary minor modes."
80 ;;; Internal variables
82 (defvar gnus-agent-history-buffers nil)
83 (defvar gnus-agent-buffer-alist nil)
84 (defvar gnus-agent-article-alist nil)
85 (defvar gnus-agent-group-alist nil)
86 (defvar gnus-agent-covered-methods nil)
87 (defvar gnus-category-alist nil)
88 (defvar gnus-agent-current-history nil)
89 (defvar gnus-agent-overview-buffer nil)
90 (defvar gnus-category-predicate-cache nil)
91 (defvar gnus-category-group-cache nil)
92 (defvar gnus-agent-spam-hashtb nil)
93 (defvar gnus-agent-file-name nil)
94 (defvar gnus-agent-send-mail-function nil)
95 (defvar gnus-agent-file-coding-system 'binary)
97 (defconst gnus-agent-scoreable-headers
98 '("subject" "from" "date" "message-id" "references" "chars" "lines" "xref")
99 "Headers that are considered when scoring articles for download via the Agent.")
102 (defvar gnus-headers)
109 (defun gnus-open-agent ()
111 (gnus-agent-read-servers)
113 (setq gnus-agent-overview-buffer
114 (gnus-get-buffer-create " *Gnus agent overview*"))
115 (with-current-buffer gnus-agent-overview-buffer
116 (mm-enable-multibyte))
117 (add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
118 (add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
119 (add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
121 (gnus-add-shutdown 'gnus-close-agent 'gnus)
123 (defun gnus-close-agent ()
124 (setq gnus-agent-covered-methods nil
125 gnus-category-predicate-cache nil
126 gnus-category-group-cache nil
127 gnus-agent-spam-hashtb nil)
128 (gnus-kill-buffer gnus-agent-overview-buffer))
131 ;;; Utility functions
134 (defun gnus-agent-read-file (file)
135 "Load FILE and do a `read' there."
138 (nnheader-insert-file-contents file)
139 (goto-char (point-min))
140 (read (current-buffer)))))
142 (defsubst gnus-agent-method ()
143 (concat (symbol-name (car gnus-command-method)) "/"
144 (if (equal (cadr gnus-command-method) "")
146 (cadr gnus-command-method))))
148 (defsubst gnus-agent-directory ()
149 "Path of the Gnus agent directory."
150 (nnheader-concat gnus-agent-directory
151 (nnheader-translate-file-chars (gnus-agent-method)) "/"))
153 (defun gnus-agent-lib-file (file)
154 "The full path of the Gnus agent library FILE."
155 (concat (gnus-agent-directory) "agent.lib/" file))
157 ;;; Fetching setup functions.
159 (defun gnus-agent-start-fetch ()
160 "Initialize data structures for efficient fetching."
161 (gnus-agent-open-history)
162 (setq gnus-agent-current-history (gnus-agent-history-buffer)))
164 (defun gnus-agent-stop-fetch ()
165 "Save all data structures and clean up."
166 (gnus-agent-save-history)
167 (gnus-agent-close-history)
168 (setq gnus-agent-spam-hashtb nil)
170 (set-buffer nntp-server-buffer)
173 (defmacro gnus-agent-with-fetch (&rest forms)
177 (gnus-agent-start-fetch)
179 (gnus-agent-stop-fetch)))
181 (put 'gnus-agent-with-fetch 'lisp-indent-function 0)
182 (put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
188 (defvar gnus-agent-mode-hook nil
189 "Hook run when installing agent mode.")
191 (defvar gnus-agent-mode nil)
192 (defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
194 (defun gnus-agent-mode ()
195 "Minor mode for providing a agent support in Gnus buffers."
196 (let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
197 (symbol-name major-mode))
198 (match-string 1 (symbol-name major-mode))))
199 (mode (intern (format "gnus-agent-%s-mode" buffer))))
200 (set (make-local-variable 'gnus-agent-mode) t)
202 (set (make-local-variable mode) t)
204 (when (gnus-visual-p 'agent-menu 'menu)
205 (funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
206 (unless (assq 'gnus-agent-mode minor-mode-alist)
207 (push gnus-agent-mode-status minor-mode-alist))
208 (unless (assq mode minor-mode-map-alist)
209 (push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
211 minor-mode-map-alist))
212 (when (eq major-mode 'gnus-group-mode)
213 (gnus-agent-toggle-plugged gnus-plugged))
214 (gnus-run-hooks 'gnus-agent-mode-hook
215 (intern (format "gnus-agent-%s-mode-hook" buffer)))))
217 (defvar gnus-agent-group-mode-map (make-sparse-keymap))
218 (gnus-define-keys gnus-agent-group-mode-map
219 "Ju" gnus-agent-fetch-groups
220 "Jc" gnus-enter-category-buffer
221 "Jj" gnus-agent-toggle-plugged
222 "Js" gnus-agent-fetch-session
223 "JS" gnus-group-send-drafts
224 "Ja" gnus-agent-add-group
225 "Jr" gnus-agent-remove-group)
227 (defun gnus-agent-group-make-menu-bar ()
228 (unless (boundp 'gnus-agent-group-menu)
230 gnus-agent-group-menu gnus-agent-group-mode-map ""
232 ["Toggle plugged" gnus-agent-toggle-plugged t]
233 ["List categories" gnus-enter-category-buffer t]
234 ["Send drafts" gnus-group-send-drafts gnus-plugged]
236 ["All" gnus-agent-fetch-session gnus-plugged]
237 ["Group" gnus-agent-fetch-group gnus-plugged])))))
239 (defvar gnus-agent-summary-mode-map (make-sparse-keymap))
240 (gnus-define-keys gnus-agent-summary-mode-map
241 "Jj" gnus-agent-toggle-plugged
242 "J#" gnus-agent-mark-article
243 "J\M-#" gnus-agent-unmark-article
244 "@" gnus-agent-toggle-mark
245 "Jc" gnus-agent-catchup)
247 (defun gnus-agent-summary-make-menu-bar ()
248 (unless (boundp 'gnus-agent-summary-menu)
250 gnus-agent-summary-menu gnus-agent-summary-mode-map ""
252 ["Toggle plugged" gnus-agent-toggle-plugged t]
253 ["Mark as downloadable" gnus-agent-mark-article t]
254 ["Unmark as downloadable" gnus-agent-unmark-article t]
255 ["Toggle mark" gnus-agent-toggle-mark t]
256 ["Catchup undownloaded" gnus-agent-catchup t]))))
258 (defvar gnus-agent-server-mode-map (make-sparse-keymap))
259 (gnus-define-keys gnus-agent-server-mode-map
260 "Jj" gnus-agent-toggle-plugged
261 "Ja" gnus-agent-add-server
262 "Jr" gnus-agent-remove-server)
264 (defun gnus-agent-server-make-menu-bar ()
265 (unless (boundp 'gnus-agent-server-menu)
267 gnus-agent-server-menu gnus-agent-server-mode-map ""
269 ["Toggle plugged" gnus-agent-toggle-plugged t]
270 ["Add" gnus-agent-add-server t]
271 ["Remove" gnus-agent-remove-server t]))))
273 (defun gnus-agent-toggle-plugged (plugged)
274 "Toggle whether Gnus is unplugged or not."
275 (interactive (list (not gnus-plugged)))
278 (setq gnus-plugged plugged)
279 (gnus-run-hooks 'gnus-agent-plugged-hook)
280 (setcar (cdr gnus-agent-mode-status) " Plugged"))
281 (gnus-agent-close-connections)
282 (setq gnus-plugged plugged)
283 (gnus-run-hooks 'gnus-agent-unplugged-hook)
284 (setcar (cdr gnus-agent-mode-status) " Unplugged"))
285 (set-buffer-modified-p t))
287 (defun gnus-agent-close-connections ()
288 "Close all methods covered by the Gnus agent."
289 (let ((methods gnus-agent-covered-methods))
291 (gnus-close-server (pop methods)))))
294 (defun gnus-unplugged ()
295 "Start Gnus unplugged."
297 (setq gnus-plugged nil)
301 (defun gnus-plugged ()
302 "Start Gnus plugged."
304 (setq gnus-plugged t)
308 (defun gnus-agentize ()
309 "Allow Gnus to be an offline newsreader.
310 The normal usage of this command is to put the following as the
311 last form in your `.gnus.el' file:
315 This will modify the `gnus-before-startup-hook', `gnus-post-method',
316 and `message-send-mail-function' variables, and install the Gnus
317 agent minor mode in all Gnus buffers."
320 (add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
321 (unless gnus-agent-send-mail-function
322 (setq gnus-agent-send-mail-function message-send-mail-function
323 message-send-mail-function 'gnus-agent-send-mail))
324 (unless gnus-agent-covered-methods
325 (setq gnus-agent-covered-methods (list gnus-select-method))))
327 (defun gnus-agent-queue-setup ()
328 "Make sure the queue group exists."
329 (unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
330 (gnus-request-create-group "queue" '(nndraft ""))
331 (let ((gnus-level-default-subscribed 1))
332 (gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
333 (gnus-group-set-parameter
334 "nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
336 (defun gnus-agent-send-mail ()
338 (funcall gnus-agent-send-mail-function)
339 (goto-char (point-min))
341 (concat "^" (regexp-quote mail-header-separator) "\n"))
343 (gnus-agent-insert-meta-information 'mail)
344 (gnus-request-accept-article "nndraft:queue" nil t t)))
346 (defun gnus-agent-insert-meta-information (type &optional method)
347 "Insert meta-information into the message that says how it's to be posted.
348 TYPE can be either `mail' or `news'. If the latter METHOD can
351 (message-remove-header gnus-agent-meta-information-header)
352 (goto-char (point-min))
353 (insert gnus-agent-meta-information-header ": "
354 (symbol-name type) " " (format "%S" method)
357 (while (search-backward "\n" nil t)
358 (replace-match "\\n" t t))))
361 ;;; Group mode commands
364 (defun gnus-agent-fetch-groups (n)
365 "Put all new articles in the current groups into the Agent."
368 (error "Groups can't be fetched when Gnus is unplugged"))
369 (gnus-group-iterate n 'gnus-agent-fetch-group))
371 (defun gnus-agent-fetch-group (group)
372 "Put all new articles in GROUP into the Agent."
373 (interactive (list (gnus-group-group-name)))
375 (error "Groups can't be fetched when Gnus is unplugged"))
377 (error "No group on the current line"))
378 (let ((gnus-command-method (gnus-find-method-for-group group)))
379 (gnus-agent-with-fetch
380 (gnus-agent-fetch-group-1 group gnus-command-method)
381 (gnus-message 5 "Fetching %s...done" group))))
383 (defun gnus-agent-add-group (category arg)
384 "Add the current group to an agent category."
390 (mapcar (lambda (cat) (list (symbol-name (car cat))))
394 (let ((cat (assq category gnus-category-alist))
396 (gnus-group-iterate arg
398 (when (cadddr (setq c (gnus-group-category group)))
399 (setf (cadddr c) (delete group (cadddr c))))
400 (push group groups)))
401 (setf (cadddr cat) (nconc (cadddr cat) groups))
402 (gnus-category-write)))
404 (defun gnus-agent-remove-group (arg)
405 "Remove the current group from its agent category, if any."
408 (gnus-group-iterate arg
410 (when (cadddr (setq c (gnus-group-category group)))
411 (setf (cadddr c) (delete group (cadddr c))))))
412 (gnus-category-write)))
415 ;;; Server mode commands
418 (defun gnus-agent-add-server (server)
419 "Enroll SERVER in the agent program."
420 (interactive (list (gnus-server-server-name)))
422 (error "No server on the current line"))
423 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
424 (when (member method gnus-agent-covered-methods)
425 (error "Server already in the agent program"))
426 (push method gnus-agent-covered-methods)
427 (gnus-agent-write-servers)
428 (message "Entered %s into the Agent" server)))
430 (defun gnus-agent-remove-server (server)
431 "Remove SERVER from the agent program."
432 (interactive (list (gnus-server-server-name)))
434 (error "No server on the current line"))
435 (let ((method (gnus-server-get-method nil (gnus-server-server-name))))
436 (unless (member method gnus-agent-covered-methods)
437 (error "Server not in the agent program"))
438 (setq gnus-agent-covered-methods
439 (delete method gnus-agent-covered-methods))
440 (gnus-agent-write-servers)
441 (message "Removed %s from the agent" server)))
443 (defun gnus-agent-read-servers ()
444 "Read the alist of covered servers."
445 (setq gnus-agent-covered-methods
446 (gnus-agent-read-file
447 (nnheader-concat gnus-agent-directory "lib/servers"))))
449 (defun gnus-agent-write-servers ()
450 "Write the alist of covered servers."
451 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
452 (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
453 (prin1 gnus-agent-covered-methods (current-buffer))))
459 (defun gnus-agent-mark-article (n &optional unmark)
460 "Mark the next N articles as downloadable.
461 If N is negative, mark backward instead. If UNMARK is non-nil, remove
462 the mark instead. The difference between N and the actual number of
463 articles marked is returned."
465 (let ((backward (< n 0))
470 (gnus-summary-set-agent-mark
471 (gnus-summary-article-number) unmark)
472 (zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
475 (gnus-message 7 "No more articles"))
476 (gnus-summary-recenter)
477 (gnus-summary-position-point)
480 (defun gnus-agent-unmark-article (n)
481 "Remove the downloadable mark from the next N articles.
482 If N is negative, unmark backward instead. The difference between N and
483 the actual number of articles unmarked is returned."
485 (gnus-agent-mark-article n t))
487 (defun gnus-agent-toggle-mark (n)
488 "Toggle the downloadable mark from the next N articles.
489 If N is negative, toggle backward instead. The difference between N and
490 the actual number of articles toggled is returned."
492 (gnus-agent-mark-article n 'toggle))
494 (defun gnus-summary-set-agent-mark (article &optional unmark)
495 "Mark ARTICLE as downloadable."
496 (let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
497 (memq article gnus-newsgroup-downloadable)
501 (setq gnus-newsgroup-downloadable
502 (delq article gnus-newsgroup-downloadable))
503 (push article gnus-newsgroup-undownloaded))
504 (setq gnus-newsgroup-undownloaded
505 (delq article gnus-newsgroup-undownloaded))
506 (push article gnus-newsgroup-downloadable))
507 (gnus-summary-update-mark
508 (if unmark gnus-undownloaded-mark gnus-downloadable-mark)
511 (defun gnus-agent-get-undownloaded-list ()
512 "Mark all unfetched articles as read."
513 (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
514 (when (and (not gnus-plugged)
515 (gnus-agent-method-p gnus-command-method))
516 (gnus-agent-load-alist gnus-newsgroup-name)
517 ;; First mark all undownloaded articles as undownloaded.
518 (let ((articles gnus-newsgroup-unreads)
520 (while (setq article (pop articles))
521 (unless (or (cdr (assq article gnus-agent-article-alist))
522 (memq article gnus-newsgroup-downloadable))
523 (push article gnus-newsgroup-undownloaded))))
524 ;; Then mark downloaded downloadable as not-downloadable,
525 ;; if you get my drift.
526 (let ((articles gnus-newsgroup-downloadable)
528 (while (setq article (pop articles))
529 (when (cdr (assq article gnus-agent-article-alist))
530 (setq gnus-newsgroup-downloadable
531 (delq article gnus-newsgroup-downloadable))))))))
533 (defun gnus-agent-catchup ()
534 "Mark all undownloaded articles as read."
537 (while gnus-newsgroup-undownloaded
538 (gnus-summary-mark-article
539 (pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
540 (gnus-summary-position-point))
543 ;;; Internal functions
546 (defun gnus-agent-save-active (method)
547 (when (gnus-agent-method-p method)
548 (let* ((gnus-command-method method)
549 (file (gnus-agent-lib-file "active")))
550 (gnus-make-directory (file-name-directory file))
551 (let ((coding-system-for-write gnus-agent-file-coding-system))
552 (write-region (point-min) (point-max) file nil 'silent))
553 (when (file-exists-p (gnus-agent-lib-file "groups"))
554 (delete-file (gnus-agent-lib-file "groups"))))))
556 (defun gnus-agent-save-groups (method)
557 (let* ((gnus-command-method method)
558 (file (gnus-agent-lib-file "groups")))
559 (gnus-make-directory (file-name-directory file))
560 (let ((coding-system-for-write gnus-agent-file-coding-system))
561 (write-region (point-min) (point-max) file nil 'silent))
562 (when (file-exists-p (gnus-agent-lib-file "active"))
563 (delete-file (gnus-agent-lib-file "active")))))
565 (defun gnus-agent-save-group-info (method group active)
566 (when (gnus-agent-method-p method)
567 (let* ((gnus-command-method method)
568 (file (if nntp-server-list-active-group
569 (gnus-agent-lib-file "active")
570 (gnus-agent-lib-file "groups"))))
571 (gnus-make-directory (file-name-directory file))
573 (when (file-exists-p file)
574 (nnheader-insert-file-contents file))
575 (goto-char (point-min))
576 (if nntp-server-list-active-group
578 (when (re-search-forward
579 (concat "^" (regexp-quote group) " ") nil t)
581 (insert group " " (number-to-string (cdr active)) " "
582 (number-to-string (car active)) " y\n"))
583 (when (re-search-forward
584 (concat (regexp-quote group) "\\($\\| \\)") nil t)
586 (insert-buffer-substring nntp-server-buffer))))))
588 (defun gnus-agent-group-path (group)
589 "Translate GROUP into a path."
590 (if nnmail-use-long-file-names
591 (gnus-group-real-name group)
592 (nnheader-replace-chars-in-string
593 (nnheader-translate-file-chars (gnus-group-real-name group))
598 (defun gnus-agent-method-p (method)
599 "Say whether METHOD is covered by the agent."
600 (member method gnus-agent-covered-methods))
602 (defun gnus-agent-get-function (method)
603 (if (and (not gnus-plugged)
604 (gnus-agent-method-p method))
610 ;;; History functions
612 (defun gnus-agent-history-buffer ()
613 (cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
615 (defun gnus-agent-open-history ()
617 (push (cons (gnus-agent-method)
618 (set-buffer (gnus-get-buffer-create
619 (format " *Gnus agent %s history*"
620 (gnus-agent-method)))))
621 gnus-agent-history-buffers)
624 (let ((file (gnus-agent-lib-file "history")))
625 (when (file-exists-p file)
627 (set (make-local-variable 'gnus-agent-file-name) file))))
629 (defun gnus-agent-save-history ()
631 (set-buffer gnus-agent-current-history)
632 (gnus-make-directory (file-name-directory gnus-agent-file-name))
633 (let ((coding-system-for-write gnus-agent-file-coding-system))
634 (write-region (1+ (point-min)) (point-max)
635 gnus-agent-file-name nil 'silent))))
637 (defun gnus-agent-close-history ()
638 (when (gnus-buffer-live-p gnus-agent-current-history)
639 (kill-buffer gnus-agent-current-history)
640 (setq gnus-agent-history-buffers
641 (delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
642 gnus-agent-history-buffers))))
644 (defun gnus-agent-enter-history (id group-arts date)
646 (set-buffer gnus-agent-current-history)
647 (goto-char (point-max))
648 (insert id "\t" (number-to-string date) "\t")
650 (insert (caar group-arts) " " (number-to-string (cdr (pop group-arts)))
654 (defun gnus-agent-article-in-history-p (id)
656 (set-buffer (gnus-agent-history-buffer))
657 (goto-char (point-min))
658 (search-forward (concat "\n" id "\t") nil t)))
660 (defun gnus-agent-history-path (id)
662 (set-buffer (gnus-agent-history-buffer))
663 (goto-char (point-min))
664 (when (search-forward (concat "\n" id "\t") nil t)
665 (let ((method (gnus-agent-method)))
667 (while (not (numberp (setq group (read (current-buffer)))))
668 (push (concat method "/" group) paths))
669 (nreverse paths))))))
675 (defun gnus-agent-fetch-articles (group articles)
676 "Fetch ARTICLES from GROUP and put them into the Agent."
678 ;; Prune off articles that we have already fetched.
680 (cdr (assq (car articles) gnus-agent-article-alist)))
682 (let ((arts articles))
684 (if (cdr (assq (cadr arts) gnus-agent-article-alist))
685 (setcdr arts (cddr arts))
686 (setq arts (cdr arts)))))
689 (gnus-agent-directory)
690 (gnus-agent-group-path group) "/"))
691 (date (time-to-days (current-time)))
694 (gnus-make-directory dir)
695 (gnus-message 7 "Fetching articles for %s..." group)
696 ;; Fetch the articles from the backend.
697 (if (gnus-check-backend-function 'retrieve-articles group)
698 (setq pos (gnus-retrieve-articles articles group))
701 (while (setq article (pop articles))
702 (when (gnus-request-article article group)
703 (goto-char (point-max))
704 (push (cons article (point)) pos)
705 (insert-buffer-substring nntp-server-buffer)))
706 (copy-to-buffer nntp-server-buffer (point-min) (point-max))
707 (setq pos (nreverse pos)))))
708 ;; Then save these articles into the Agent.
710 (set-buffer nntp-server-buffer)
712 (narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
713 (goto-char (point-min))
714 (when (search-forward "\n\n" nil t)
715 (when (search-backward "\nXrefs: " nil t)
716 ;; Handle crossposting.
717 (skip-chars-forward "^ ")
718 (skip-chars-forward " ")
720 (while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
721 (push (cons (buffer-substring (match-beginning 1)
723 (buffer-substring (match-beginning 2)
726 (goto-char (match-end 0)))
727 (gnus-agent-crosspost crosses (caar pos))))
728 (goto-char (point-min))
729 (if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
730 (setq id "No-Message-ID-in-article")
731 (setq id (buffer-substring (match-beginning 1) (match-end 1))))
732 (let ((coding-system-for-write
733 gnus-agent-file-coding-system))
734 (write-region (point-min) (point-max)
735 (concat dir (number-to-string (caar pos)))
737 (when (setq elem (assq (caar pos) gnus-agent-article-alist))
739 (gnus-agent-enter-history
740 id (or crosses (list (cons group (caar pos)))) date)
743 (gnus-agent-save-alist group)))))
745 (defun gnus-agent-crosspost (crosses article)
746 (let (gnus-agent-article-alist group alist beg end)
748 (set-buffer gnus-agent-overview-buffer)
749 (when (nnheader-find-nov-line article)
752 (setq end (progn (forward-line 1) (point)))))
754 (setq group (caar crosses))
755 (unless (setq alist (assoc group gnus-agent-group-alist))
756 (push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
757 gnus-agent-group-alist))
758 (setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
760 (set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
762 (when (= (point-max) (point-min))
763 (push (cons group (current-buffer)) gnus-agent-buffer-alist)
765 (nnheader-insert-file-contents
766 (gnus-agent-article-name ".overview" group))))
767 (nnheader-find-nov-line (string-to-number (cdar crosses)))
768 (insert (string-to-number (cdar crosses)))
769 (insert-buffer-substring gnus-agent-overview-buffer beg end))
772 (defun gnus-agent-flush-cache ()
774 (while gnus-agent-buffer-alist
775 (set-buffer (cdar gnus-agent-buffer-alist))
776 (let ((coding-system-for-write
777 gnus-agent-file-coding-system))
778 (write-region (point-min) (point-max)
779 (gnus-agent-article-name ".overview"
780 (caar gnus-agent-buffer-alist))
782 (pop gnus-agent-buffer-alist))
783 (while gnus-agent-group-alist
784 (with-temp-file (caar gnus-agent-group-alist)
785 (princ (cdar gnus-agent-group-alist))
787 (pop gnus-agent-group-alist))))
789 (defun gnus-agent-fetch-headers (group &optional force)
790 (let ((articles (if (gnus-agent-load-alist group)
791 (gnus-sorted-intersection
792 (gnus-list-of-unread-articles group)
793 (gnus-uncompress-range
794 (cons (1+ (caar (last gnus-agent-article-alist)))
795 (cdr (gnus-active group)))))
796 (gnus-list-of-unread-articles group)))
797 (gnus-decode-encoded-word-function 'identity)
798 (file (gnus-agent-article-name ".overview" group)))
800 (gnus-make-directory (nnheader-translate-file-chars
801 (file-name-directory file)))
803 (gnus-message 7 "Fetching headers for %s..." group)
805 (set-buffer nntp-server-buffer)
806 (unless (eq 'nov (gnus-retrieve-headers articles group))
807 (nnvirtual-convert-headers))
808 ;; Save these headers for later processing.
809 (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
810 (when (file-exists-p file)
811 (gnus-agent-braid-nov group articles file))
812 (let ((coding-system-for-write
813 gnus-agent-file-coding-system))
814 (write-region (point-min) (point-max) file nil 'silent))
815 (gnus-agent-save-alist group articles nil)
816 (gnus-agent-enter-history
817 "last-header-fetched-for-session"
818 (list (cons group (nth (- (length articles) 1) articles)))
819 (time-to-days (current-time)))
822 (defsubst gnus-agent-copy-nov-line (article)
824 (set-buffer gnus-agent-overview-buffer)
826 (if (eq article (read (current-buffer)))
827 (setq e (progn (forward-line 1) (point)))
831 (set-buffer nntp-server-buffer)
832 (insert-buffer-substring gnus-agent-overview-buffer b e)))
834 (defun gnus-agent-braid-nov (group articles file)
835 (set-buffer gnus-agent-overview-buffer)
836 (goto-char (point-min))
837 (set-buffer nntp-server-buffer)
839 (nnheader-insert-file-contents file)
840 (goto-char (point-max))
841 (if (or (= (point-min) (point-max))
844 (< (read (current-buffer)) (car articles))))
845 ;; We have only headers that are after the older headers,
846 ;; so we just append them.
848 (goto-char (point-max))
849 (insert-buffer-substring gnus-agent-overview-buffer))
850 ;; We do it the hard way.
851 (nnheader-find-nov-line (car articles))
852 (gnus-agent-copy-nov-line (car articles))
856 (while (and (not (eobp))
857 (< (read (current-buffer)) (car articles)))
861 (gnus-agent-copy-nov-line (car articles))
862 (setq articles (cdr articles))))
865 (set-buffer gnus-agent-overview-buffer)
868 (set-buffer nntp-server-buffer)
869 (insert-buffer-substring gnus-agent-overview-buffer b e)))))
871 (defun gnus-agent-load-alist (group &optional dir)
872 "Load the article-state alist for GROUP."
873 (setq gnus-agent-article-alist
874 (gnus-agent-read-file
876 (concat dir ".agentview")
877 (gnus-agent-article-name ".agentview" group)))))
879 (defun gnus-agent-save-alist (group &optional articles state dir)
880 "Save the article-state alist for GROUP."
881 (with-temp-file (if dir
882 (concat dir ".agentview")
883 (gnus-agent-article-name ".agentview" group))
884 (princ (setq gnus-agent-article-alist
885 (nconc gnus-agent-article-alist
886 (mapcar (lambda (article) (cons article state))
891 (defun gnus-agent-article-name (article group)
892 (concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
893 (if (stringp article) article (string-to-number article))))
896 (defun gnus-agent-batch-fetch ()
897 "Start Gnus and fetch session."
900 (gnus-agent-fetch-session)
903 (defun gnus-agent-fetch-session ()
904 "Fetch all articles and headers that are eligible for fetching."
906 (unless gnus-agent-covered-methods
907 (error "No servers are covered by the Gnus agent"))
909 (error "Can't fetch articles while Gnus is unplugged"))
910 (let ((methods gnus-agent-covered-methods)
911 groups group gnus-command-method)
914 (setq gnus-command-method (car methods))
915 (when (or (gnus-server-opened gnus-command-method)
916 (gnus-open-server gnus-command-method))
917 (setq groups (gnus-groups-from-server (car methods)))
918 (gnus-agent-with-fetch
919 (while (setq group (pop groups))
920 (when (<= (gnus-group-level group) gnus-agent-handle-level)
921 (gnus-agent-fetch-group-1 group gnus-command-method)))))
923 (gnus-message 6 "Finished fetching articles into the Gnus agent"))))
925 (defun gnus-agent-fetch-group-1 (group method)
927 (let ((gnus-command-method method)
928 (gnus-newsgroup-name group)
929 gnus-newsgroup-dependencies gnus-newsgroup-headers
930 gnus-newsgroup-scored gnus-headers gnus-score
931 gnus-use-cache articles arts
932 category predicate info marks score-param)
934 (when (and (or (gnus-active group) (gnus-activate-group group))
935 (setq articles (gnus-agent-fetch-headers group)))
936 ;; Parse them and see which articles we want to fetch.
937 (setq gnus-newsgroup-dependencies
938 (make-vector (length articles) 0))
939 ;; No need to call `gnus-get-newsgroup-headers-xover' with
940 ;; the entire .overview for group as we still have the just
941 ;; downloaded headers in `gnus-agent-overview-buffer'.
942 (let ((nntp-server-buffer gnus-agent-overview-buffer))
943 (setq gnus-newsgroup-headers
944 (gnus-get-newsgroup-headers-xover articles nil nil group)))
945 (setq category (gnus-group-category group))
948 (or (gnus-group-get-parameter group 'agent-predicate t)
950 ;; Do we want to download everything, or nothing?
951 (if (or (eq (caaddr predicate) 'gnus-agent-true)
952 (eq (caaddr predicate) 'gnus-agent-false))
954 (setq arts (symbol-value
955 (cadr (assoc (caaddr predicate)
956 '((gnus-agent-true articles)
957 (gnus-agent-false nil))))))
958 ;; No, we need to decide what we want.
962 (gnus-group-get-parameter group 'agent-score t)
965 (require 'gnus-score)
966 (if (eq score-method 'file)
968 (gnus-score-load-files
969 (gnus-all-score-files group)))
971 (while (setq list (car entries))
972 (push (car list) score-file)
973 (setq list (cdr list))
975 (when (member (caar list)
976 gnus-agent-scoreable-headers)
977 (push (car list) score-file))
978 (setq list (cdr list)))
980 (append score-param (list (nreverse score-file)))
981 score-file nil entries (cdr entries)))
983 (if (stringp (car score-method))
985 (list (list score-method)))))))
987 (gnus-score-headers score-param))
989 (while (setq gnus-headers (pop gnus-newsgroup-headers))
991 (or (cdr (assq (mail-header-number gnus-headers)
992 gnus-newsgroup-scored))
993 gnus-summary-default-score))
994 (when (funcall predicate)
995 (push (mail-header-number gnus-headers)
997 ;; Fetch the articles.
999 (gnus-agent-fetch-articles group arts)))
1000 ;; Perhaps we have some additional articles to fetch.
1001 (setq arts (assq 'download (gnus-info-marks
1002 (setq info (gnus-get-info group)))))
1004 (gnus-agent-fetch-articles
1005 group (gnus-uncompress-range (cdr arts)))
1006 (setq marks (delq arts (gnus-info-marks info)))
1007 (gnus-info-set-marks info marks)
1009 (concat "(gnus-group-set-info '"
1010 (gnus-prin1-to-string info)
1014 ;;; Agent Category Mode
1017 (defvar gnus-category-mode-hook nil
1018 "Hook run in `gnus-category-mode' buffers.")
1020 (defvar gnus-category-line-format " %(%20c%): %g\n"
1021 "Format of category lines.")
1023 (defvar gnus-category-mode-line-format "Gnus: %%b"
1024 "The format specification for the category mode line.")
1026 (defvar gnus-agent-short-article 100
1027 "Articles that have fewer lines than this are short.")
1029 (defvar gnus-agent-long-article 200
1030 "Articles that have more lines than this are long.")
1032 (defvar gnus-agent-low-score 0
1033 "Articles that have a score lower than this have a low score.")
1035 (defvar gnus-agent-high-score 0
1036 "Articles that have a score higher than this have a high score.")
1039 ;;; Internal variables.
1041 (defvar gnus-category-buffer "*Agent Category*")
1043 (defvar gnus-category-line-format-alist
1044 `((?c gnus-tmp-name ?s)
1045 (?g gnus-tmp-groups ?d)))
1047 (defvar gnus-category-mode-line-format-alist
1048 `((?u user-defined ?s)))
1050 (defvar gnus-category-line-format-spec nil)
1051 (defvar gnus-category-mode-line-format-spec nil)
1053 (defvar gnus-category-mode-map nil)
1054 (put 'gnus-category-mode 'mode-class 'special)
1056 (unless gnus-category-mode-map
1057 (setq gnus-category-mode-map (make-sparse-keymap))
1058 (suppress-keymap gnus-category-mode-map)
1060 (gnus-define-keys gnus-category-mode-map
1061 "q" gnus-category-exit
1062 "k" gnus-category-kill
1063 "c" gnus-category-copy
1064 "a" gnus-category-add
1065 "p" gnus-category-edit-predicate
1066 "g" gnus-category-edit-groups
1067 "s" gnus-category-edit-score
1068 "l" gnus-category-list
1070 "\C-c\C-i" gnus-info-find-node
1071 "\C-c\C-b" gnus-bug))
1073 (defvar gnus-category-menu-hook nil
1074 "*Hook run after the creation of the menu.")
1076 (defun gnus-category-make-menu-bar ()
1077 (gnus-turn-off-edit-menu 'category)
1078 (unless (boundp 'gnus-category-menu)
1080 gnus-category-menu gnus-category-mode-map ""
1082 ["Add" gnus-category-add t]
1083 ["Kill" gnus-category-kill t]
1084 ["Copy" gnus-category-copy t]
1085 ["Edit predicate" gnus-category-edit-predicate t]
1086 ["Edit score" gnus-category-edit-score t]
1087 ["Edit groups" gnus-category-edit-groups t]
1088 ["Exit" gnus-category-exit t]))
1090 (gnus-run-hooks 'gnus-category-menu-hook)))
1092 (defun gnus-category-mode ()
1093 "Major mode for listing and editing agent categories.
1095 All normal editing commands are switched off.
1096 \\<gnus-category-mode-map>
1097 For more in-depth information on this mode, read the manual
1098 (`\\[gnus-info-find-node]').
1100 The following commands are available:
1102 \\{gnus-category-mode-map}"
1104 (when (gnus-visual-p 'category-menu 'menu)
1105 (gnus-category-make-menu-bar))
1106 (kill-all-local-variables)
1107 (gnus-simplify-mode-line)
1108 (setq major-mode 'gnus-category-mode)
1109 (setq mode-name "Category")
1110 (gnus-set-default-directory)
1111 (setq mode-line-process nil)
1112 (use-local-map gnus-category-mode-map)
1113 (buffer-disable-undo)
1114 (setq truncate-lines t)
1115 (setq buffer-read-only t)
1116 (gnus-run-hooks 'gnus-category-mode-hook))
1118 (defalias 'gnus-category-position-point 'gnus-goto-colon)
1120 (defun gnus-category-insert-line (category)
1121 (let* ((gnus-tmp-name (car category))
1122 (gnus-tmp-groups (length (cadddr category))))
1124 (gnus-add-text-properties
1128 (eval gnus-category-line-format-spec))
1129 (list 'gnus-category gnus-tmp-name))))
1131 (defun gnus-enter-category-buffer ()
1132 "Go to the Category buffer."
1134 (gnus-category-setup-buffer)
1135 (gnus-configure-windows 'category)
1136 (gnus-category-prepare))
1138 (defun gnus-category-setup-buffer ()
1139 (unless (get-buffer gnus-category-buffer)
1141 (set-buffer (gnus-get-buffer-create gnus-category-buffer))
1142 (gnus-category-mode))))
1144 (defun gnus-category-prepare ()
1145 (gnus-set-format 'category-mode)
1146 (gnus-set-format 'category t)
1147 (let ((alist gnus-category-alist)
1148 (buffer-read-only nil))
1151 (gnus-category-insert-line (pop alist)))
1152 (goto-char (point-min))
1153 (gnus-category-position-point)))
1155 (defun gnus-category-name ()
1156 (or (get-text-property (gnus-point-at-bol) 'gnus-category)
1157 (error "No category on the current line")))
1159 (defun gnus-category-read ()
1160 "Read the category alist."
1161 (setq gnus-category-alist
1162 (or (gnus-agent-read-file
1163 (nnheader-concat gnus-agent-directory "lib/categories"))
1164 (list (list 'default 'short nil nil)))))
1166 (defun gnus-category-write ()
1167 "Write the category alist."
1168 (setq gnus-category-predicate-cache nil
1169 gnus-category-group-cache nil)
1170 (gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
1171 (with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
1172 (prin1 gnus-category-alist (current-buffer))))
1174 (defun gnus-category-edit-predicate (category)
1175 "Edit the predicate for CATEGORY."
1176 (interactive (list (gnus-category-name)))
1177 (let ((info (assq category gnus-category-alist)))
1179 (cadr info) (format "Editing the predicate for category %s" category)
1180 `(lambda (predicate)
1181 (setf (cadr (assq ',category gnus-category-alist)) predicate)
1182 (gnus-category-write)
1183 (gnus-category-list)))))
1185 (defun gnus-category-edit-score (category)
1186 "Edit the score expression for CATEGORY."
1187 (interactive (list (gnus-category-name)))
1188 (let ((info (assq category gnus-category-alist)))
1191 (format "Editing the score expression for category %s" category)
1193 (setf (caddr (assq ',category gnus-category-alist)) groups)
1194 (gnus-category-write)
1195 (gnus-category-list)))))
1197 (defun gnus-category-edit-groups (category)
1198 "Edit the group list for CATEGORY."
1199 (interactive (list (gnus-category-name)))
1200 (let ((info (assq category gnus-category-alist)))
1202 (cadddr info) (format "Editing the group list for category %s" category)
1204 (setf (cadddr (assq ',category gnus-category-alist)) groups)
1205 (gnus-category-write)
1206 (gnus-category-list)))))
1208 (defun gnus-category-kill (category)
1209 "Kill the current category."
1210 (interactive (list (gnus-category-name)))
1211 (let ((info (assq category gnus-category-alist))
1212 (buffer-read-only nil))
1214 (gnus-category-write)
1215 (setq gnus-category-alist (delq info gnus-category-alist))))
1217 (defun gnus-category-copy (category to)
1218 "Copy the current category."
1219 (interactive (list (gnus-category-name) (intern (read-string "New name: "))))
1220 (let ((info (assq category gnus-category-alist)))
1221 (push (list to (gnus-copy-sequence (cadr info))
1222 (gnus-copy-sequence (caddr info)) nil)
1223 gnus-category-alist)
1224 (gnus-category-write)
1225 (gnus-category-list)))
1227 (defun gnus-category-add (category)
1228 "Create a new category."
1229 (interactive "SCategory name: ")
1230 (when (assq category gnus-category-alist)
1231 (error "Category %s already exists" category))
1232 (push (list category 'false nil nil)
1233 gnus-category-alist)
1234 (gnus-category-write)
1235 (gnus-category-list))
1237 (defun gnus-category-list ()
1238 "List all categories."
1240 (gnus-category-prepare))
1242 (defun gnus-category-exit ()
1243 "Return to the group buffer."
1245 (kill-buffer (current-buffer))
1246 (gnus-configure-windows 'group t))
1248 ;; To avoid having 8-bit characters in the source file.
1249 (defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
1251 (defvar gnus-category-predicate-alist
1252 '((spam . gnus-agent-spam-p)
1253 (short . gnus-agent-short-p)
1254 (long . gnus-agent-long-p)
1255 (low . gnus-agent-low-scored-p)
1256 (high . gnus-agent-high-scored-p)
1257 (true . gnus-agent-true)
1258 (false . gnus-agent-false))
1259 "Mapping from short score predicate symbols to predicate functions.")
1261 (defun gnus-agent-spam-p ()
1262 "Say whether an article is spam or not."
1263 (unless gnus-agent-spam-hashtb
1264 (setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
1265 (if (not (equal (mail-header-references gnus-headers) ""))
1267 (let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
1269 (gnus-gethash string gnus-agent-spam-hashtb)
1270 (gnus-sethash string t gnus-agent-spam-hashtb)))))
1272 (defun gnus-agent-short-p ()
1273 "Say whether an article is short or not."
1274 (< (mail-header-lines gnus-headers) gnus-agent-short-article))
1276 (defun gnus-agent-long-p ()
1277 "Say whether an article is long or not."
1278 (> (mail-header-lines gnus-headers) gnus-agent-long-article))
1280 (defun gnus-agent-low-scored-p ()
1281 "Say whether an article has a low score or not."
1282 (< gnus-score gnus-agent-low-score))
1284 (defun gnus-agent-high-scored-p ()
1285 "Say whether an article has a high score or not."
1286 (> gnus-score gnus-agent-high-score))
1288 (defun gnus-category-make-function (cat)
1289 "Make a function from category CAT."
1290 `(lambda () ,(gnus-category-make-function-1 cat)))
1292 (defun gnus-agent-true ()
1296 (defun gnus-agent-false ()
1300 (defun gnus-category-make-function-1 (cat)
1301 "Make a function from category CAT."
1303 ;; Functions are just returned as is.
1305 (gnus-functionp cat))
1306 `(,(or (cdr (assq cat gnus-category-predicate-alist))
1308 ;; More complex category.
1311 ((memq (car cat) '(& and))
1313 ((memq (car cat) '(| or))
1315 ((memq (car cat) gnus-category-not)
1317 ,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
1319 (error "Unknown category type: %s" cat))))
1321 (defun gnus-get-predicate (predicate)
1322 "Return the predicate for CATEGORY."
1323 (or (cdr (assoc predicate gnus-category-predicate-cache))
1324 (cdar (push (cons predicate
1325 (gnus-category-make-function predicate))
1326 gnus-category-predicate-cache))))
1328 (defun gnus-group-category (group)
1329 "Return the category GROUP belongs to."
1330 (unless gnus-category-group-cache
1331 (setq gnus-category-group-cache (gnus-make-hashtable 1000))
1332 (let ((cs gnus-category-alist)
1334 (while (setq cat (pop cs))
1335 (setq groups (cadddr cat))
1337 (gnus-sethash (pop groups) cat gnus-category-group-cache)))))
1338 (or (gnus-gethash group gnus-category-group-cache)
1339 (assq 'default gnus-category-alist)))
1341 (defun gnus-agent-expire ()
1342 "Expire all old articles."
1344 (let ((methods gnus-agent-covered-methods)
1345 (day (- (time-to-days (current-time)) gnus-agent-expire-days))
1346 gnus-command-method sym group articles
1347 history overview file histories elem art nov-file low info
1348 unreads marked article)
1350 (setq overview (gnus-get-buffer-create " *expire overview*"))
1351 (while (setq gnus-command-method (pop methods))
1352 (let ((expiry-hashtb (gnus-make-hashtable 1023)))
1353 (gnus-agent-open-history)
1355 (setq gnus-agent-current-history
1356 (setq history (gnus-agent-history-buffer))))
1357 (goto-char (point-min))
1358 (when (> (buffer-size) 1)
1359 (goto-char (point-min))
1361 (skip-chars-forward "^\t")
1362 (if (> (read (current-buffer)) day)
1363 ;; New article; we don't expire it.
1365 ;; Old article. Schedule it for possible nuking.
1367 (setq sym (let ((obarray expiry-hashtb))
1368 (read (current-buffer))))
1370 (set sym (cons (cons (read (current-buffer)) (point))
1371 (symbol-value sym)))
1372 (set sym (list (cons (read (current-buffer)) (point)))))
1373 (skip-chars-forward " "))
1375 ;; We now have all articles that can possibly be expired.
1378 (setq group (symbol-name sym)
1379 articles (sort (symbol-value sym) 'car-less-than-car)
1380 low (car (gnus-active group))
1381 info (gnus-get-info group)
1382 unreads (ignore-errors (gnus-list-of-unread-articles group))
1383 marked (nconc (gnus-uncompress-range
1384 (cdr (assq 'tick (gnus-info-marks info))))
1385 (gnus-uncompress-range
1387 (gnus-info-marks info)))))
1388 nov-file (gnus-agent-article-name ".overview" group))
1389 (gnus-agent-load-alist group)
1390 (gnus-message 5 "Expiring articles in %s" group)
1391 (set-buffer overview)
1393 (when (file-exists-p nov-file)
1394 (nnheader-insert-file-contents nov-file))
1395 (goto-char (point-min))
1397 (while (setq elem (pop articles))
1398 (setq article (car elem))
1399 (when (or (null low)
1401 gnus-agent-expire-all
1402 (and (not (memq article unreads))
1403 (not (memq article marked))))
1404 ;; Find and nuke the NOV line.
1405 (while (and (not (eobp))
1407 (setq art (read (current-buffer)))))
1410 (gnus-agent-article-name
1411 (number-to-string art) group))
1413 ;; Remove old NOV lines that have no articles.
1414 (gnus-delete-line)))
1419 ;; Nuke the article.
1420 (when (file-exists-p (setq file (gnus-agent-article-name
1421 (number-to-string article)
1424 ;; Schedule the history line for nuking.
1425 (push (cdr elem) histories)))
1426 (gnus-make-directory (file-name-directory nov-file))
1427 (let ((coding-system-for-write
1428 gnus-agent-file-coding-system))
1429 (write-region (point-min) (point-max) nov-file nil 'silent))
1430 ;; Delete the unwanted entries in the alist.
1431 (setq gnus-agent-article-alist
1432 (sort gnus-agent-article-alist 'car-less-than-car))
1433 (let* ((alist gnus-agent-article-alist)
1434 (prev (cons nil alist))
1438 (<= (caar alist) article))
1439 (if (or (not (cdar alist))
1441 (gnus-agent-article-name
1446 (push (caar alist) expired)
1447 (setcdr prev (setq alist (cdr alist))))
1449 alist (cdr alist))))
1450 (setq gnus-agent-article-alist (cdr first))
1451 (gnus-agent-save-alist group)
1452 ;; Mark all articles up to the first article
1453 ;; in `gnus-article-alist' as read.
1454 (when (and info (caar gnus-agent-article-alist))
1455 (setcar (nthcdr 2 info)
1458 (cons 1 (- (caar gnus-agent-article-alist) 1)))))
1459 ;; Maybe everything has been expired from `gnus-article-alist'
1460 ;; and so the above marking as read could not be conducted,
1461 ;; or there are expired article within the range of the alist.
1464 (or (not (caar gnus-agent-article-alist))
1466 (caar gnus-agent-article-alist))))
1467 (setcar (nthcdr 2 info)
1470 (nreverse expired))))
1472 (concat "(gnus-group-set-info '"
1473 (gnus-prin1-to-string info)
1476 (set-buffer history)
1477 (setq histories (nreverse (sort histories '<)))
1479 (goto-char (pop histories))
1481 (gnus-agent-save-history)
1482 (gnus-agent-close-history))
1483 (gnus-message 4 "Expiry...done"))))))
1486 (defun gnus-agent-batch ()
1488 (let ((init-file-user "")
1489 (gnus-always-read-dribble-file t))
1491 (gnus-group-send-drafts)
1492 (gnus-agent-fetch-session))
1494 (provide 'gnus-agent)
1496 ;;; gnus-agent.el ends here