Undo System: replace with simpler binary diffing buffer storage

Applying/undoing incremental changes didn't fit well when
mixed with periodic snapshots from mem-file undo.

This moves to a much simpler undo system.

- Uses array storage with de-duplication from `BLI_array_store`.
- Loads the buffer into existing text data,
  for better performance on large files.
- Has the advantage that Python operators can be supported
  since we don't depend on hard coded undo operations.

Solves T67045, T66695, T65909.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_text_api.c b/source/blender/makesrna/intern/rna_text_api.c
index ad36a56ac6a..4ca48226ee9 100644
--- a/source/blender/makesrna/intern/rna_text_api.c
+++ b/source/blender/makesrna/intern/rna_text_api.c
@@ -34,13 +34,13 @@
 
 static void rna_Text_clear(Text *text)
 {
-  BKE_text_clear(text, NULL);
+  BKE_text_clear(text);
   WM_main_add_notifier(NC_TEXT | NA_EDITED, text);
 }
 
 static void rna_Text_write(Text *text, const char *str)
 {
-  BKE_text_write(text, NULL, str);
+  BKE_text_write(text, str);
   WM_main_add_notifier(NC_TEXT | NA_EDITED, text);
 }