Fix bug #16129 with slow and incorrect redisplay in follow-mode.

 src/xdisp.c (redisplay_window): Don't skip window redisplay if the
 last value of point is not equal to buffer's point.

2 files changed, 7 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index a6c308771c2..a9575a14223 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2014-01-06  Eli Zaretskii  <eliz@gnu.org>
+
+        * xdisp.c (redisplay_window): Don't skip window redisplay if the
+        last value of point is not equal to buffer's point.  (Bug#16129)
+
 2014-01-05  Paul Eggert  <eggert@cs.ucla.edu>
 
         Spelling fixes.
diff --git a/src/xdisp.c b/src/xdisp.c
index 035edc0ff55..404c8a61e52 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -15621,7 +15621,8 @@ redisplay_window (Lisp_Object window, bool just_this_one_p)
       && REDISPLAY_SOME_P ()
       && !w->redisplay
       && !f->redisplay
-      && !buffer->text->redisplay)
+      && !buffer->text->redisplay
+      && BUF_PT (buffer) == w->last_point)
     return;
 
   /* Make sure that both W's markers are valid.  */