Fix bug #16347 with updating redisplay of company-mode's "tooltip".

 src/xdisp.c (try_window_id): Don't use this function's optimizations
 if overlays in the buffer displayed by the window have changed
 since last redisplay.
 (message_dolog): Fix indentation.

2 files changed, 14 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index f258f38afbb..556fcce5fa5 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+2014-01-11  Eli Zaretskii  <eliz@gnu.org>
+
+        * xdisp.c (try_window_id): Don't use this function's optimizations
+        if overlays in the buffer displayed by the window have changed
+        since last redisplay.  (Bug#16347)
+        (message_dolog): Fix indentation.
+
 2014-01-11  Martin Rudalics  <rudalics@gmx.at>
 
         * frame.c (frame_resize_pixelwise): Fix doc-string.
diff --git a/src/xdisp.c b/src/xdisp.c
index 99471d1df19..8efe3492db0 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -9854,7 +9854,7 @@ message_dolog (const char *m, ptrdiff_t nbytes, bool nlflag, bool multibyte)
          incrementing windows_or_buffers_changed even if *Messages* is
          shown in some window.  So we must manually set
          windows_or_buffers_changed here to make up for that.  */
-        windows_or_buffers_changed = old_windows_or_buffers_changed;
+      windows_or_buffers_changed = old_windows_or_buffers_changed;
       bset_redisplay (current_buffer);
 
       set_buffer_internal (oldbuf);
@@ -17417,6 +17417,12 @@ try_window_id (struct window *w)
   if (windows_or_buffers_changed || f->cursor_type_changed)
     GIVE_UP (2);
 
+  /* This function's optimizations cannot be used if overlays have
+     changed in the buffer displayed by the window, so give up if they
+     have.  */
+  if (w->last_overlay_modified != OVERLAY_MODIFF)
+    GIVE_UP (21);
+
   /* Verify that narrowing has not changed.
      Also verify that we were not told to prevent redisplay optimizations.
      It would be nice to further