;;; gnus-topic.el --- a folding minor mode for Gnus group buffers
;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Ilja Weis <kult@uni-paderborn.de>
;; Lars Magne Ingebrigtsen <larsi@gnus.org>
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(defun gnus-group-parent-topic (group)
"Return the topic GROUP is member of by looking at the group buffer."
- (save-excursion
- (set-buffer gnus-group-buffer)
+ (with-current-buffer gnus-group-buffer
(if (gnus-group-goto-group group)
(gnus-current-topic)
(gnus-group-topic group))))
(when recursive
(if (eq recursive t)
(setq recursive (cdr (gnus-topic-find-topology topic))))
- (mapcar (lambda (topic-topology)
- (setq visible-groups
- (nconc visible-groups
- (gnus-topic-find-groups
- (caar topic-topology)
- level all lowest topic-topology))))
- (cdr recursive)))
+ (dolist (topic-topology (cdr recursive))
+ (setq visible-groups
+ (nconc visible-groups
+ (gnus-topic-find-groups
+ (caar topic-topology)
+ level all lowest topic-topology)))))
visible-groups))
(defun gnus-topic-goto-previous-topic (n)
(setq topology gnus-topic-topology
gnus-tmp-topics nil))
(push (caar topology) gnus-tmp-topics)
- (mapcar 'gnus-topic-list (cdr topology))
+ (mapc 'gnus-topic-list (cdr topology))
gnus-tmp-topics)
;;; Topic parameter jazz
(format "(gnus-topic-set-parameters %S '%S)" topic parameters))))
(defun gnus-group-topic-parameters (group)
- "Compute the group parameters for GROUP taking into account inheritance from topics."
+ "Compute the group parameters for GROUP in topic mode.
+Possibly inherit parameters from topics above GROUP."
(let ((params-list (copy-sequence (gnus-group-get-parameter group))))
(save-excursion
- (nconc params-list
- (gnus-topic-hierarchical-parameters
- ;; First we try to go to the group within the group
- ;; buffer and find the topic for the group that way.
- ;; This hopefully copes well with groups that are in
- ;; more than one topic. Failing that (i.e. when the
- ;; group isn't visible in the group buffer) we find a
- ;; topic for the group via gnus-group-topic.
- (or (and (gnus-group-goto-group group)
- (gnus-current-topic))
- (gnus-group-topic group)))))))
-
-(defun gnus-topic-hierarchical-parameters (topic)
- "Return a topic list computed for TOPIC."
- (let ((params-list (nreverse (mapcar 'gnus-topic-parameters
- (gnus-current-topics topic))))
+ (gnus-topic-hierarchical-parameters
+ ;; First we try to go to the group within the group buffer and find the
+ ;; topic for the group that way. This hopefully copes well with groups
+ ;; that are in more than one topic. Failing that (i.e. when the group
+ ;; isn't visible in the group buffer) we find a topic for the group via
+ ;; gnus-group-topic.
+ (or (and (gnus-group-goto-group group)
+ (gnus-current-topic))
+ (gnus-group-topic group))
+ params-list))))
+
+(defun gnus-topic-hierarchical-parameters (topic &optional group-params-list)
+ "Compute the topic parameters for TOPIC.
+Possibly inherit parameters from topics above TOPIC.
+If optional argument GROUP-PARAMS-LIST is non-nil, use it as the basis for
+inheritance."
+ (let ((params-list
+ ;; We probably have lots of nil elements here, so we remove them.
+ ;; Probably faster than doing this "properly".
+ (delq nil (cons group-params-list
+ (mapcar 'gnus-topic-parameters
+ (gnus-current-topics topic)))))
param out params)
- ;; We probably have lots of nil elements here, so
- ;; we remove them. Probably faster than doing this "properly".
- (setq params-list (delq nil params-list))
;; Now we have all the parameters, so we go through them
;; and do inheritance in the obvious way.
- (while (setq params (pop params-list))
- (while (setq param (pop params))
- (when (atom param)
- (setq param (cons param t)))
- ;; Override any old versions of this param.
- (gnus-pull (car param) out)
- (push param out)))
+ (let (posting-style)
+ (while (setq params (pop params-list))
+ (while (setq param (pop params))
+ (when (atom param)
+ (setq param (cons param t)))
+ (cond ((eq (car param) 'posting-style)
+ (let ((param (cdr param))
+ elt)
+ (while (setq elt (pop param))
+ (unless (assoc (car elt) posting-style)
+ (push elt posting-style)))))
+ (t
+ (unless (assq (car param) out)
+ (push param out))))))
+ (and posting-style (push (cons 'posting-style posting-style) out)))
;; Return the resulting parameter list.
out))
(defun gnus-topic-change-level (group level oldlevel &optional previous)
"Run when changing levels to enter/remove groups from topics."
- (save-excursion
- (set-buffer gnus-group-buffer)
+ (with-current-buffer gnus-group-buffer
(let ((buffer-read-only nil))
(unless gnus-topic-inhibit-change-level
(gnus-group-goto-group (or (car (nth 2 previous)) group))
(defun gnus-topic-mode (&optional arg redisplay)
"Minor mode for topicsifying Gnus group buffers."
+ ;; FIXME: Use define-minor-mode.
(interactive (list current-prefix-arg t))
(when (eq major-mode 'gnus-group-mode)
(make-local-variable 'gnus-topic-mode)
No article is selected automatically.
If the group is opened, just switch the summary buffer.
If ALL is non-nil, already read articles become readable.
-If ALL is a number, fetch this number of articles.
+
+If ALL is a positive number, fetch this number of the latest
+articles in the group. If ALL is a negative number, fetch this
+number of the earliest articles in the group.
If performed over a topic line, toggle folding the topic."
(interactive "P")
(defun gnus-topic-read-group (&optional all no-article group)
"Read news in this newsgroup.
If the prefix argument ALL is non-nil, already read articles become
-readable. IF ALL is a number, fetch this number of articles. If the
-optional argument NO-ARTICLE is non-nil, no article will be
-auto-selected upon group entry. If GROUP is non-nil, fetch that
-group.
+readable.
+
+If ALL is a positive number, fetch this number of the latest
+articles in the group. If ALL is a negative number, fetch this
+number of the earliest articles in the group.
+
+If the optional argument NO-ARTICLE is non-nil, no article will
+be auto-selected upon group entry. If GROUP is non-nil, fetch
+that group.
If performed over a topic line, toggle folding the topic."
(interactive "P")
entry)
(if (and (not groups) (not copyp) start-topic)
(gnus-topic-move start-topic topic)
- (mapcar
- (lambda (g)
- (gnus-group-remove-mark g use-marked)
- (when (and
- (setq entry (assoc (gnus-current-topic) gnus-topic-alist))
- (not copyp))
- (setcdr entry (gnus-delete-first g (cdr entry))))
- (nconc topicl (list g)))
- groups)
+ (dolist (g groups)
+ (gnus-group-remove-mark g use-marked)
+ (when (and
+ (setq entry (assoc (gnus-current-topic) gnus-topic-alist))
+ (not copyp))
+ (setcdr entry (gnus-delete-first g (cdr entry))))
+ (nconc topicl (list g)))
(gnus-topic-enter-dribble)
(if start-group
(gnus-group-goto-group start-group)
(provide 'gnus-topic)
-;;; arch-tag: bf176856-f30c-40f0-ae77-e41529a1134c
;;; gnus-topic.el ends here
projects / gnus / blobdiff