Add debugging facility for the newline cache.

See the discussion in
http://lists.gnu.org/archive/html/emacs-devel/2014-04/msg00295.html
for more detail.

 src/search.c (find_newline1): New subroutine.
 (Fnewline_cache_check): New function.
 (syms_of_search): Defsubr it.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e8fb5f63203..98d607046c6 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2014-04-22  Eli Zaretskii  <eliz@gnu.org>
+
+        * search.c (find_newline1): New subroutine.
+        (Fnewline_cache_check): New function.
+        (syms_of_search): Defsubr it.
+
 2014-04-21  Jarek Czekalski  <jarekczek@poczta.onet.pl>
 
         Fix freezing with scroll bars of GTK3 Toolkit (bug#15801).