* src/xdisp.c (syms_of_xdisp): New vars redisplay--all-windows-cause and

redisplay--mode-lines-cause.
(redisplay_internal): Keep them uptodate.  Remove redundant check of
buffer_shared_and_changed.
* *.[chm]: Number every assignment to update_mode_lines so we
can track why it is set.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/commands.h b/src/commands.h
index 35c2c05fe72..b7f0049515d 100644
--- a/src/commands.h
+++ b/src/commands.h
@@ -36,10 +36,10 @@ extern Lisp_Object control_x_map;
    events until a non-ASCII event is acceptable as input.  */
 extern Lisp_Object unread_switch_frame;
 
-/* Nonzero if input is coming from the keyboard */
+/* Nonzero if input is coming from the keyboard.  */
 
 #define INTERACTIVE (NILP (Vexecuting_kbd_macro) && !noninteractive)
 
-/* Set this nonzero to force reconsideration of mode line. */
+/* Set this nonzero to force reconsideration of mode line.  */
 
 extern int update_mode_lines;