Fix inconsistent point movement in the Gnus group buffer

* lisp/gnus/gnus-group.el (gnus-group-goto-group): If we can't
find the group we're looking for, then don't move point at all
(bug#23021).

diff --git a/lisp/gnus/gnus-group.el b/lisp/gnus/gnus-group.el
index d1f258fd92a268b4b67261730aa1118aef777af9..a53adecd11082756c185014dad4190c877ddf1b3 100644 (file)
--- a/lisp/gnus/gnus-group.el
+++ b/lisp/gnus/gnus-group.el
@@ -2565,51 +2565,53 @@ If PROMPT (the prefix) is a number, use the prompt specified in
 If FAR, it is likely that the group is not on the current line.
 If TEST-MARKED, the line must be marked."
   (when group
-    (beginning-of-line)
-    (cond
-     ;; It's quite likely that we are on the right line, so
-     ;; we check the current line first.
-     ((and (not far)
-          (eq (get-text-property (point) 'gnus-group)
-              (gnus-intern-safe group gnus-active-hashtb))
-          (or (not test-marked) (gnus-group-mark-line-p)))
-      (point))
-     ;; Previous and next line are also likely, so we check them as well.
-     ((and (not far)
-          (save-excursion
-            (forward-line -1)
-            (and (eq (get-text-property (point) 'gnus-group)
-                     (gnus-intern-safe group gnus-active-hashtb))
-                 (or (not test-marked) (gnus-group-mark-line-p)))))
-      (forward-line -1)
-      (point))
-     ((and (not far)
-          (save-excursion
-            (forward-line 1)
-            (and (eq (get-text-property (point) 'gnus-group)
-                     (gnus-intern-safe group gnus-active-hashtb))
-                 (or (not test-marked) (gnus-group-mark-line-p)))))
-      (forward-line 1)
-      (point))
-     (test-marked
-      (goto-char (point-min))
-      (let (found)
-       (while (and (not found)
-                   (gnus-goto-char
-                    (text-property-any
-                     (point) (point-max)
-                     'gnus-group
-                     (gnus-intern-safe group gnus-active-hashtb))))
-         (if (gnus-group-mark-line-p)
-             (setq found t)
-           (forward-line 1)))
-       found))
-     (t
-      ;; Search through the entire buffer.
-      (gnus-goto-char
-       (text-property-any
-       (point-min) (point-max)
-       'gnus-group (gnus-intern-safe group gnus-active-hashtb)))))))
+    (let ((start (point)))
+      (beginning-of-line)
+      (cond
+       ;; It's quite likely that we are on the right line, so
+       ;; we check the current line first.
+       ((and (not far)
+            (eq (get-text-property (point) 'gnus-group)
+                (gnus-intern-safe group gnus-active-hashtb))
+            (or (not test-marked) (gnus-group-mark-line-p)))
+       (point))
+       ;; Previous and next line are also likely, so we check them as well.
+       ((and (not far)
+            (save-excursion
+              (forward-line -1)
+              (and (eq (get-text-property (point) 'gnus-group)
+                       (gnus-intern-safe group gnus-active-hashtb))
+                   (or (not test-marked) (gnus-group-mark-line-p)))))
+       (forward-line -1)
+       (point))
+       ((and (not far)
+            (save-excursion
+              (forward-line 1)
+              (and (eq (get-text-property (point) 'gnus-group)
+                       (gnus-intern-safe group gnus-active-hashtb))
+                   (or (not test-marked) (gnus-group-mark-line-p)))))
+       (forward-line 1)
+       (point))
+       (test-marked
+       (goto-char (point-min))
+       (let (found)
+         (while (and (not found)
+                     (gnus-goto-char
+                      (text-property-any
+                       (point) (point-max)
+                       'gnus-group
+                       (gnus-intern-safe group gnus-active-hashtb))))
+           (if (gnus-group-mark-line-p)
+               (setq found t)
+             (forward-line 1)))
+         found))
+       (t
+       ;; Search through the entire buffer.
+       (unless (gnus-goto-char
+                (text-property-any
+                 (point-min) (point-max)
+                 'gnus-group (gnus-intern-safe group gnus-active-hashtb)))
+         (goto-char start)))))))
 
 (defun gnus-group-next-group (n &optional silent)
   "Go to next N'th newsgroup.