[Emacs-diffs] trunk r115190: Fix bug #15951 with vertical-motion near beginning of narrowed region.

[Eli Zaretskii]

------------------------------------------------------------
revno: 115190
revision-id: address@hidden
parent: address@hidden
fixes bug: http://debbugs.gnu.org/15951
committer: Eli Zaretskii <address@hidden>
branch nick: trunk
timestamp: Fri 2013-11-22 18:04:49 +0200
message:
  Fix bug #15951 with vertical-motion near beginning of narrowed region.
  
   src/bidi.c (bidi_find_paragraph_start): Limit the returned positions
   to BEGV_BYTE..ZV_BYTE range.
modified:
  src/ChangeLog                  changelog-20091113204419-o5vbwnq5f7feedwu-1438
  src/bidi.c                     bidi.c-20091231194348-rm8gzug639w0dpq5-1

=== modified file 'src/ChangeLog'
--- a/src/ChangeLog     2013-11-21 17:26:55 +0000
+++ b/src/ChangeLog     2013-11-22 16:04:49 +0000
@@ -1,3 +1,8 @@
+2013-11-22  Eli Zaretskii  <address@hidden>
+
+       * bidi.c (bidi_find_paragraph_start): Limit the returned positions
+       to BEGV_BYTE..ZV_BYTE range.  (Bug#15951)
+
 2013-11-21  Paul Eggert  <address@hidden>
 
        Fix some dependency problems that cause unnecessary recompiles.

=== modified file 'src/bidi.c'
--- a/src/bidi.c        2013-09-17 07:06:42 +0000
+++ b/src/bidi.c        2013-11-22 16:04:49 +0000
@@ -1148,6 +1148,9 @@
     pos = BEGV, pos_byte = BEGV_BYTE;
   if (bpc)
     know_region_cache (current_buffer, bpc, pos, oldpos);
+  /* Positions returned by the region cache are not limited to
+     BEGV..ZV range, so we limit them here.  */
+  pos_byte = clip_to_bounds (BEGV_BYTE, pos_byte, ZV_BYTE);
   return pos_byte;
 }