;;; gnus-topic.el --- a folding minor mode for Gnus group buffers
-;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
+;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc.
;; Author: Ilja Weis <kult@uni-paderborn.de>
-;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
;;; Generating group buffers
(defun gnus-group-prepare-topics (level &optional all lowest regexp list-topic topic-level)
- "List all newsgroups with unread articles of level LEVEL or lower, and
-use the `gnus-group-topics' to sort the groups.
+ "List all newsgroups with unread articles of level LEVEL or lower.
+Use the `gnus-group-topics' to sort the groups.
If ALL is non-nil, list groups that have no unread articles.
If LOWEST is non-nil, list all newsgroups of level LOWEST or higher."
(set-buffer gnus-group-buffer)
(gnus-group-set-mode-line)
(setq gnus-group-list-mode (cons level all))
- (run-hooks 'gnus-group-prepare-hook))))
+ (gnus-run-hooks 'gnus-group-prepare-hook))))
(defun gnus-topic-prepare-topic (topicl level &optional list-level all silent
lowest)
"Run when changing levels to enter/remove groups from topics."
(save-excursion
(set-buffer gnus-group-buffer)
- (unless gnus-topic-inhibit-change-level
- (gnus-group-goto-group (or (car (nth 2 previous)) group))
- (when (and gnus-topic-mode
- gnus-topic-alist
- (not gnus-topic-inhibit-change-level))
- ;; Remove the group from the topics.
- (if (and (< oldlevel gnus-level-zombie)
- (>= level gnus-level-zombie))
- (let ((alist gnus-topic-alist))
- (while (gnus-group-goto-group group)
- (gnus-delete-line))
- (while alist
- (when (member group (car alist))
- (setcdr (car alist) (delete group (cdar alist))))
- (pop alist)))
- ;; If the group is subscribed we enter it into the topics.
- (when (and (< level gnus-level-zombie)
- (>= oldlevel gnus-level-zombie))
- (let* ((prev (gnus-group-group-name))
- (gnus-topic-inhibit-change-level t)
- (gnus-group-indentation
- (make-string
- (* gnus-topic-indent-level
- (or (save-excursion
- (gnus-topic-goto-topic (gnus-current-topic))
- (gnus-group-topic-level))
- 0))
- ? ))
- (yanked (list group))
- alist talist end)
- ;; Then we enter the yanked groups into the topics they belong
- ;; to.
- (when (setq alist (assoc (save-excursion
- (forward-line -1)
- (or
- (gnus-current-topic)
- (caar gnus-topic-topology)))
- gnus-topic-alist))
- (setq talist alist)
- (when (stringp yanked)
- (setq yanked (list yanked)))
- (if (not prev)
- (nconc alist yanked)
- (if (not (cdr alist))
- (setcdr alist (nconc yanked (cdr alist)))
- (while (and (not end) (cdr alist))
- (when (equal (cadr alist) prev)
+ (let ((buffer-read-only nil))
+ (unless gnus-topic-inhibit-change-level
+ (gnus-group-goto-group (or (car (nth 2 previous)) group))
+ (when (and gnus-topic-mode
+ gnus-topic-alist
+ (not gnus-topic-inhibit-change-level))
+ ;; Remove the group from the topics.
+ (if (and (< oldlevel gnus-level-zombie)
+ (>= level gnus-level-zombie))
+ (let ((alist gnus-topic-alist))
+ (while (gnus-group-goto-group group)
+ (gnus-delete-line))
+ (while alist
+ (when (member group (car alist))
+ (setcdr (car alist) (delete group (cdar alist))))
+ (pop alist)))
+ ;; If the group is subscribed we enter it into the topics.
+ (when (and (< level gnus-level-zombie)
+ (>= oldlevel gnus-level-zombie))
+ (let* ((prev (gnus-group-group-name))
+ (gnus-topic-inhibit-change-level t)
+ (gnus-group-indentation
+ (make-string
+ (* gnus-topic-indent-level
+ (or (save-excursion
+ (gnus-topic-goto-topic (gnus-current-topic))
+ (gnus-group-topic-level))
+ 0))
+ ? ))
+ (yanked (list group))
+ alist talist end)
+ ;; Then we enter the yanked groups into the topics they belong
+ ;; to.
+ (when (setq alist (assoc (save-excursion
+ (forward-line -1)
+ (or
+ (gnus-current-topic)
+ (caar gnus-topic-topology)))
+ gnus-topic-alist))
+ (setq talist alist)
+ (when (stringp yanked)
+ (setq yanked (list yanked)))
+ (if (not prev)
+ (nconc alist yanked)
+ (if (not (cdr alist))
(setcdr alist (nconc yanked (cdr alist)))
- (setq end t))
- (setq alist (cdr alist)))
- (unless end
- (nconc talist yanked))))))
- (gnus-topic-update-topic)))))))
+ (while (and (not end) (cdr alist))
+ (when (equal (cadr alist) prev)
+ (setcdr alist (nconc yanked (cdr alist)))
+ (setq end t))
+ (setq alist (cdr alist)))
+ (unless end
+ (nconc talist yanked))))))
+ (gnus-topic-update-topic))))))))
(defun gnus-topic-goto-next-group (group props)
"Go to group or the next group after group."
;; We check the topology.
(when gnus-newsrc-alist
(gnus-topic-check-topology))
- (run-hooks 'gnus-topic-mode-hook))
+ (gnus-run-hooks 'gnus-topic-mode-hook))
;; Remove topic infestation.
(unless gnus-topic-mode
(remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic)
(let ((topic (gnus-current-topic)))
(list topic
(read-string (format "Rename %s to: " topic)))))
+ ;; Check whether the new name exists.
+ (when (gnus-topic-find-topology new-name)
+ (error "Topic '%s' already exists"))
+ ;; Do the renaming.
(let ((top (gnus-topic-find-topology old-name))
(entry (assoc old-name gnus-topic-alist)))
(when top
projects / elisp / gnus.git- / blobdiff