[Issue] Undo doesn't remove UserText attributes

[ivelin.peychev]

@Helvetosaur

I don’t think so, not without a lot of other complications… Even normal Rhino commands that store command-line choices within a session will not undo the current choices and go back to the previous ones if you undo the operation… Sticky is just a place where where you can store and retrieve stuff within a session.

If you really need to be able to undo the sticky settings, I surmise that you will need to keep a whole undo stack stored somewhere - maybe also in sticky, but could also be stored in the document - then you will need to use a special “Undo” that will look at your stored undo stack and restore the previously used settings…

–Mitch

Mitch actually describes pretty much my idea.
Another option would be to cpickle the value