Improve on previous change in xdisp.c.

2 files changed, 11 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 193bb739766..4d493eab7b1 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,7 +1,9 @@
 2011-08-08  Eli Zaretskii  <eliz@gnu.org>
 
         * xdisp.c (forward_to_next_line_start): Allow to use the
-        no-display-properties-and-no-overlays under bidi display.
+        no-display-properties-and-no-overlays under bidi display.  Set
+        disp_pos in the bidi iterator to avoid searches for display
+        properties and overlays.
 
 2011-08-08  Chong Yidong  <cyd@stupidchicken.com>
 
diff --git a/src/xdisp.c b/src/xdisp.c
index 2a46fe2dad5..1437aafef39 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -5551,6 +5551,14 @@ forward_to_next_line_start (struct it *it, int *skipped_p,
             {
               struct bidi_it bprev;
 
+              /* Help bidi.c avoid expensive searches for display
+                 properties and overlays, by telling it that there are
+                 none up to `limit'.  */
+              if (it->bidi_it.disp_pos < limit)
+                {
+                  it->bidi_it.disp_pos = limit;
+                  it->bidi_it.disp_prop_p = 0;
+                }
               do {
                 bprev = it->bidi_it;
                 bidi_move_to_visually_next (&it->bidi_it);