Correctly redo all undone edits after undoing in multi-buffer

When undoing edits performed in the multi-buffer, we also undo subsequent edits that may have occurred outside of the multi-buffer. This commit makes us redo those edits as well.

Co-Authored-By: Antonio Scandurra <me@as-cii.com>
93eb005f74Nathan Sobo committed on 2/10/2022, 4:26:20 PMparentc5b0b5f
2 files changedLine totals unavailable