Fix bug #18490 with redisplay of other windows showing a narrowed buffer.

 src/xdisp.c (redisplay_internal): Force redisplay of all windows
 that show a buffer whose narrowing has changed.

2 files changed, 11 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index c86f6de1575..880f49e3e89 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2014-09-18  Eli Zaretskii  <eliz@gnu.org>
+
+        * xdisp.c (redisplay_internal): Force redisplay of all windows
+        that show a buffer whose narrowing has changed.  (Bug#18490)
+
 2014-09-16  Eli Zaretskii  <eliz@gnu.org>
 
         * xterm.c (x_draw_hollow_cursor, x_draw_bar_cursor):
diff --git a/src/xdisp.c b/src/xdisp.c
index 909349b81b3..754862d59d1 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -13598,6 +13598,12 @@ redisplay_internal (void)
 
       if (mode_line_update_needed (w))
         w->update_mode_line = 1;
+
+      /* If reconsider_clip_changes above decided that the narrowing
+         in the current buffer changed, make sure all other windows
+         showing that buffer will be redisplayed.  */
+      if (current_buffer->clip_changed)
+        bset_update_mode_line (current_buffer);
     }
 
   /* Normally the message* functions will have already displayed and