Invalidate region caches only if buffer text is going to be changed.

* lisp.h (modify_region_1): Remove 3rd arg and rename to...
(modify_text): ...new prototype.
(prepare_to_modify_buffer_1): New prototype.
* textprop.c (modify_region): Rename to...
(modify_text_properties): ...new function.
(add_text_properties_1, set_text_properties, Fremove_text_properties)
(Fremove_list_of_text_properties): Adjust users.
* insdel.c (modify_region_1): Remove 3rd arg and reimplement as...
(modify_text): ...new function.
(prepare_to_modify_buffer): Reimplement mostly as a wrapper for...
(prepare_to_modify_buffer_1): ...new function.
* casefiddle.c (casify_region):
* editfns.c (Fsubst_char_in_region, Ftranslate_region_internal)
(Ftranspose_regions): Use modify_text.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 35b5c1cfe5c..7b7d9b56cb5 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,21 @@
+2013-08-06  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Invalidate region caches only if buffer text is going to be changed.
+        * lisp.h (modify_region_1): Remove 3rd arg and rename to...
+        (modify_text): ...new prototype.
+        (prepare_to_modify_buffer_1): New prototype.
+        * textprop.c (modify_region): Rename to...
+        (modify_text_properties): ...new function.
+        (add_text_properties_1, set_text_properties, Fremove_text_properties)
+        (Fremove_list_of_text_properties): Adjust users.
+        * insdel.c (modify_region_1): Remove 3rd arg and reimplement as...
+        (modify_text): ...new function.
+        (prepare_to_modify_buffer): Reimplement mostly as a wrapper for...
+        (prepare_to_modify_buffer_1): ...new function.
+        * casefiddle.c (casify_region):
+        * editfns.c (Fsubst_char_in_region, Ftranslate_region_internal)
+        (Ftranspose_regions): Use modify_text.
+
 2013-08-05  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * lisp.mk (lisp): Add nadvice.elc.