Make the undo system fail fast if unexpected things occur
@aleb
Submitted by Alex Băluț Assigned to Alex Băluț @aleb
Description
When an undoable action is started (see: $ ag 'started\(' pitivi/
), the started
method should raise an error if it's expected to be a top-level undoable action but an UndoableActionStack
is already started is_in_transaction()
.