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, 7 insertions, 7 deletions

diff --git a/src/editfns.c b/src/editfns.c
index 50bde90788d..90346a88eb2 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -2928,7 +2928,7 @@ Both characters must have the same length of multi-byte form.  */)
           else if (!changed)
             {
               changed = -1;
-              modify_region_1 (pos, XINT (end), false);
+              modify_text (pos, XINT (end));
 
               if (! NILP (noundo))
                 {
@@ -3104,7 +3104,7 @@ It returns the number of characters changed.  */)
   pos = XINT (start);
   pos_byte = CHAR_TO_BYTE (pos);
   end_pos = XINT (end);
-  modify_region_1 (pos, end_pos, false);
+  modify_text (pos, end_pos);
 
   cnt = 0;
   for (; pos < end_pos; )
@@ -4615,7 +4615,7 @@ Transposing beyond buffer boundaries is an error.  */)
 
   if (end1 == start2)           /* adjacent regions */
     {
-      modify_region_1 (start1, end2, false);
+      modify_text (start1, end2);
       record_change (start1, len1 + len2);
 
       tmp_interval1 = copy_intervals (cur_intv, start1, len1);
@@ -4674,8 +4674,8 @@ Transposing beyond buffer boundaries is an error.  */)
         {
           USE_SAFE_ALLOCA;
 
-          modify_region_1 (start1, end1, false);
-          modify_region_1 (start2, end2, false);
+          modify_text (start1, end1);
+          modify_text (start2, end2);
           record_change (start1, len1);
           record_change (start2, len2);
           tmp_interval1 = copy_intervals (cur_intv, start1, len1);
@@ -4708,7 +4708,7 @@ Transposing beyond buffer boundaries is an error.  */)
         {
           USE_SAFE_ALLOCA;
 
-          modify_region_1 (start1, end2, false);
+          modify_text (start1, end2);
           record_change (start1, (end2 - start1));
           tmp_interval1 = copy_intervals (cur_intv, start1, len1);
           tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
@@ -4741,7 +4741,7 @@ Transposing beyond buffer boundaries is an error.  */)
           USE_SAFE_ALLOCA;
 
           record_change (start1, (end2 - start1));
-          modify_region_1 (start1, end2, false);
+          modify_text (start1, end2);
 
           tmp_interval1 = copy_intervals (cur_intv, start1, len1);
           tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);