11 okt. 2019 kl. 14.19 skrev martin rudalics <rudalics@gmx.at>:
> 
> I suppose this the effect of undo working on the active region only.
> A very nasty invention.  Try deactivating the region right after 3.

Right, thank you. I wonder if anything would break if that were changed.

Proof-of-concept patch attached. (Manual and NEWS changes not included.) It does solve this particular problem.

Do you know of any drawbacks for someone whose editing habits are not dependent on the region confinement of undo?