[Bf-blender-cvs] [676543d91f5] master: Fix T66658: Undo steps gets out sync with text/edit-mode

[Campbell Barton]

Commit: 676543d91f5c9f441cd0544d99aa34c933570347
Author: Campbell Barton
Date:   Thu Jul 11 09:42:36 2019 +1000
Branches: master
https://developer.blender.org/rB676543d91f5c9f441cd0544d99aa34c933570347

Fix T66658: Undo steps gets out sync with text/edit-mode

===================================================================

M	source/blender/editors/space_text/text_undo.c

===================================================================

diff --git a/source/blender/editors/space_text/text_undo.c b/source/blender/editors/space_text/text_undo.c
index ae12473e600..66cbaa8bb5b 100644
--- a/source/blender/editors/space_text/text_undo.c
+++ b/source/blender/editors/space_text/text_undo.c
@@ -130,7 +130,7 @@ static void text_undosys_step_decode_redo_impl(Text *text, TextUndoStep *us)
   us->step.is_applied = true;
 }
 
-static void text_undosys_step_decode_undo(TextUndoStep *us)
+static void text_undosys_step_decode_undo(TextUndoStep *us, bool is_final)
 {
   TextUndoStep *us_iter = us;
   while (us_iter->step.next && (us_iter->step.next->type == us_iter->step.type)) {
@@ -140,13 +140,16 @@ static void text_undosys_step_decode_undo(TextUndoStep *us)
     us_iter = (TextUndoStep *)us_iter->step.next;
   }
   Text *text_prev = NULL;
-  while (us_iter != us) {
+  while ((us_iter != us) || (is_final && us_iter == us)) {
     Text *text = us_iter->text_ref.ptr;
     text_undosys_step_decode_undo_impl(text, us_iter);
     if (text_prev != text) {
       text_update_edited(text);
       text_prev = text;
     }
+    if (is_final) {
+      break;
+    }
     us_iter = (TextUndoStep *)us_iter->step.prev;
   }
 }
@@ -176,12 +179,12 @@ static void text_undosys_step_decode_redo(TextUndoStep *us)
 }
 
 static void text_undosys_step_decode(
-    struct bContext *C, struct Main *UNUSED(bmain), UndoStep *us_p, int dir, bool UNUSED(is_final))
+    struct bContext *C, struct Main *UNUSED(bmain), UndoStep *us_p, int dir, bool is_final)
 {
   TextUndoStep *us = (TextUndoStep *)us_p;
 
   if (dir < 0) {
-    text_undosys_step_decode_undo(us);
+    text_undosys_step_decode_undo(us, is_final);
   }
   else {
     text_undosys_step_decode_redo(us);