Fix rare aborts in bidi.c.

 src/bidi.c (bidi_resolve_neutral): After finding the next
 non-neutral character, accept NEUTRAL_ON type as well, because
 directional control characters, such as LRE and RLE, have their
 type converted to that by bidi_resolve_weak.  This avoids aborts
 when LRE/RLE follows a run of neutrals.
 (bidi_move_to_visually_next): Assert that return value of
 bidi_peek_at_next_level is non-negative.  Negative values will
 cause an infloop.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e33d2fa5870..b5a1e0d5cb5 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,14 @@
+2013-02-11  Eli Zaretskii  <eliz@gnu.org>
+
+        * bidi.c (bidi_resolve_neutral): After finding the next
+        non-neutral character, accept NEUTRAL_ON type as well, because
+        directional control characters, such as LRE and RLE, have their
+        type converted to that by bidi_resolve_weak.  This avoids aborts
+        when LRE/RLE follows a run of neutrals.
+        (bidi_move_to_visually_next): Assert that return value of
+        bidi_peek_at_next_level is non-negative.  Negative values will
+        cause an infloop.
+
 2013-02-05  Daniel Colascione  <dancol@dancol.org>
 
         * emacs.c: Use execvp, not execv, when DAEMON_MUST_EXEC, so that