Sorry for my ignorance, but what is the usefulness of undo persistence after a IDE restart? Don't you normally save your changes and finish a piece of work before exiting an DE?
Edit: some great examples in the replies here, thanks! Perhaps I should start using it in editors that support it, never gave it a thought before.
Edit: some great examples in the replies here, thanks! Perhaps I should start using it in editors that support it, never gave it a thought before.