Undo will always go back to empty document

[johngilden]

When I create an ember-ace instance bound to an existing value, ctrl-z will allow me to "undo" to the empty document, like that was the first state. This problem is known in other components of ace (react-ace). Additionally, it would be cool to have a manual reset of the undoState, i.e. if I change the content of the editor programmatically and would like to have that as a new "starting point".

[kliput]

It passed 6 years since your message, but as we still use EmberAce 2.0.1 in our project, I found a simple solution: use ready hook of the component and launch this code:

aceEditor.getSession().getUndoManager().reset()

where aceEditor is the first argument of the callback.

You can additionally store reference to the session and use reset on the undoManager programmatically any time.