(redisplay_window): Fix infinite loop in redisplay.

If centering point failed to make whole line visible and vscroll
is non-zero, disable vscroll and try centering point again.

2 files changed, 16 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 59b088cfc73..6add287016b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,11 @@
+2003-02-25  Kim F. Storm  <storm@cua.dk>
+
+        * xdisp.c (redisplay_window): Fix infinite loop in redisplay.
+        If centering point failed to make whole line visible and vscroll
+        is non-zero, disable vscroll and try centering point again.
+
+        * lread.c (read1): Accept `single space' syntax like (? x).
+
 2003-02-25  Jan Dj,Ad(Brv  <jan.h.d@swipnet.se>
 
         * keyboard.c (cancel_hourglass_unwind): Surround with
diff --git a/src/xdisp.c b/src/xdisp.c
index f9ad45445d4..457b3dd0ac9 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -10822,6 +10822,14 @@ redisplay_window (window, just_this_one_p)
 
   if (!make_cursor_line_fully_visible (w))
     {
+      /* If vscroll is enabled, disable it and try again.  */
+      if (w->vscroll)
+        {
+          w->vscroll = 0;
+          clear_glyph_matrix (w->desired_matrix);
+          goto recenter;
+        }
+      
       /* If centering point failed to make the whole line visible,
          put point at the top instead.  That has to make the whole line
          visible, if it can be done.  */