Sync up with Pterodactyl Gnus v0.98.

[elisp/gnus.git-] / lisp / gnus-topic.el

diff --git a/lisp/gnus-topic.el b/lisp/gnus-topic.el
index 97da766..b8235cf 100644 (file)
--- a/lisp/gnus-topic.el
+++ b/lisp/gnus-topic.el
@@ -212,11 +212,12 @@ If TOPIC, start with that topic."
                         (if (member group gnus-zombie-list)
                             gnus-level-zombie gnus-level-killed))))
       (and
-       unread                          ; nil means that the group is dead.
+       info                            ; nil means that the group is dead.
        (<= clevel level)
        (>= clevel lowest)              ; Is inside the level we want.
        (or all
-          (if (eq unread t)
+          (if (or (eq unread t)
+                  (eq unread nil))
               gnus-group-list-inactive-groups
             (> unread 0))
           (and gnus-list-groups-with-ticked-articles
@@ -981,6 +982,7 @@ articles in the topic and its subtopics."
        ["Create" gnus-topic-create-topic t]
        ["Mark" gnus-topic-mark-topic t]
        ["Indent" gnus-topic-indent t]
+       ["Sort" gnus-topic-sort-topics t]
        ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t]
        ["Edit parameters" gnus-topic-edit-parameters t])
        ["List active" gnus-topic-list-active t]))))
@@ -1119,23 +1121,25 @@ If COPYP, copy the groups instead."
         (completing-read "Move to topic: " gnus-topic-alist nil t)))
   (let ((groups (gnus-group-process-prefix n))
        (topicl (assoc topic gnus-topic-alist))
-       (start-group (progn (forward-line 1) (gnus-group-group-name)))
        (start-topic (gnus-group-topic-name))
+       (start-group (progn (forward-line 1) (gnus-group-group-name)))
        entry)
-    (mapcar
-     (lambda (g)
-       (gnus-group-remove-mark g)
-       (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)
-    (gnus-topic-enter-dribble)
-    (if start-group
-       (gnus-group-goto-group start-group)
-      (gnus-topic-goto-topic start-topic))
-    (gnus-group-list-groups)))
+    (if (and (not groups) (not copyp) start-topic)
+       (gnus-topic-move start-topic topic)
+      (mapcar
+       (lambda (g)
+        (gnus-group-remove-mark g)
+        (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)
+      (gnus-topic-enter-dribble)
+      (if start-group
+         (gnus-group-goto-group start-group)
+       (gnus-topic-goto-topic start-topic))
+      (gnus-group-list-groups))))
 
 (defun gnus-topic-remove-group (&optional arg)
   "Remove the current group from the topic."
@@ -1475,6 +1479,55 @@ If REVERSE, sort in reverse order."
   (interactive "P")
   (gnus-topic-sort-groups 'gnus-group-sort-by-method reverse))
 
+(defun gnus-topic-sort-topics-1 (top reverse)
+  (if (cdr top)
+      (let ((subtop
+            (mapcar `(lambda (top)
+                       (gnus-topic-sort-topics-1 top ,reverse))
+                    (sort (cdr top)
+                          '(lambda (t1 t2) 
+                             (string-lessp (caar t1) (caar t2)))))))
+       (setcdr top (if reverse (reverse subtop) subtop))))
+  top)
+
+(defun gnus-topic-sort-topics (&optional topic reverse)
+  "Sort topics in TOPIC alphabeticaly by topic name.
+If REVERSE, reverse the sorting order."
+  (interactive 
+   (list (completing-read "Sort topics in : " gnus-topic-alist nil t 
+                         (gnus-current-topic))
+        current-prefix-arg))
+  (let ((topic-topology (or (and topic (cdr (gnus-topic-find-topology topic)))
+                           gnus-topic-topology)))
+    (gnus-topic-sort-topics-1 topic-topology reverse)
+    (gnus-topic-enter-dribble)
+    (gnus-group-list-groups)
+    (gnus-topic-goto-topic topic)))
+
+(defun gnus-topic-move (current to)
+  "Move the CURRENT topic to TO."
+  (interactive 
+   (list 
+    (gnus-group-topic-name)
+    (completing-read "Move to topic: " gnus-topic-alist nil t)))
+  (unless (and current to)
+    (error "Can't find topic"))
+  (let ((current-top (cdr (gnus-topic-find-topology current)))
+       (to-top (cdr (gnus-topic-find-topology to))))
+    (unless current-top
+      (error "Can't find topic `%s'" current))
+    (unless to-top
+      (error "Can't find topic `%s'" to))
+    (if (gnus-topic-find-topology to current-top 0) ;; Don't care the level
+       (error "Can't move `%s' to its sub-level" current))
+    (gnus-topic-find-topology current nil nil 'delete)
+    (while (cdr to-top)
+      (setq to-top (cdr to-top)))
+    (setcdr to-top (list current-top))
+    (gnus-topic-enter-dribble)
+    (gnus-group-list-groups)
+    (gnus-topic-goto-topic current)))
+
 (provide 'gnus-topic)
 
 ;;; gnus-topic.el ends here