Ensure unmarking in buffer menu clears 'S' marks. (Bug#15761)

* buff-menu.el (Buffer-menu--unmark): New function.
  (Buffer-menu-unmark, Buffer-menu-backup-unmark): Use it.

1 files changed, 10 insertions, 2 deletions

diff --git a/lisp/buff-menu.el b/lisp/buff-menu.el
index 58fde695b39..627c02f6e62 100644
--- a/lisp/buff-menu.el
+++ b/lisp/buff-menu.el
@@ -353,14 +353,22 @@ It will be displayed by the \\<Buffer-menu-mode-map>\\[Buffer-menu-select] comma
   "Cancel all requested operations on buffer on this line and move down.
 Optional prefix arg means move up."
   (interactive "P")
-  (tabulated-list-set-col 0 " " t)
+  (Buffer-menu--unmark)
   (forward-line (if backup -1 1)))
 
 (defun Buffer-menu-backup-unmark ()
   "Move up and cancel all requested operations on buffer on line above."
   (interactive)
   (forward-line -1)
-  (tabulated-list-set-col 0 " " t))
+  (Buffer-menu--unmark))
+
+(defun Buffer-menu--unmark ()
+  (tabulated-list-set-col 0 " " t)
+  (let ((buf (Buffer-menu-buffer)))
+    (when buf
+      (if (buffer-modified-p buf)
+          (tabulated-list-set-col 2 "*" t)
+        (tabulated-list-set-col 2 " " t)))))
 
 (defun Buffer-menu-delete (&optional arg)
   "Mark the buffer on this Buffer Menu buffer line for deletion.