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, 1 insertions, 1 deletions

diff --git a/src/casefiddle.c b/src/casefiddle.c
index 7f5b99752f..5a40790f87 100644
--- a/src/casefiddle.c
+++ b/src/casefiddle.c
@@ -214,7 +214,7 @@ casify_region (enum case_action flag, Lisp_Object b, Lisp_Object e)
   validate_region (&b, &e);
   start = XFASTINT (b);
   end = XFASTINT (e);
-  modify_region_1 (start, end, false);
+  modify_text (start, end);
   record_change (start, end - start);
   start_byte = CHAR_TO_BYTE (start);