Fix T59165: Text operations fail to undo

Some undo operations encode multiple actions, now all are undone/redone.

diff --git a/source/blender/editors/space_text/text_undo.c b/source/blender/editors/space_text/text_undo.c
index 729522cc8f43cc33fe2be35a65d6efee167e1e76..b79a77a4353f0381eae212ace5b7291fa8666327 100644 (file)
--- a/source/blender/editors/space_text/text_undo.c
+++ b/source/blender/editors/space_text/text_undo.c
@@ -121,12 +121,18 @@ static void text_undosys_step_decode(struct bContext *C, UndoStep *us_p, int dir
 
        if (dir < 0) {
                TextUndoBuf data = us->data;
-               txt_do_undo(text, &data);
+               while (data.pos > -1) {
+                       txt_do_undo(text, &data);
+               }
+               BLI_assert(data.pos == -1);
        }
        else {
                TextUndoBuf data = us->data;
                data.pos = -1;
-               txt_do_redo(text, &data);
+               while (data.pos < us->data.pos) {
+                       txt_do_redo(text, &data);
+               }
+               BLI_assert(data.pos == us->data.pos);
        }
 
        text_update_edited(text);