bug#60467: 30.0.50; primitive-undo: Changes to be undone by function different from announced

[Eli Zaretskii]

> Date: Sat, 01 Jul 2023 14:14:11 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: 60467@debbugs.gnu.org, frederic.giquel@laposte.net, yantar92@posteo.net, 
>     monnier@iro.umontreal.ca, acm@muc.de
> 
> 
> >> Well, that bug was already discussed at length six months ago, and the 
> >> minimal change that was in the end installed (59c3c53efa) introduced a 
> >> new bug.  Should we design another minimal change, at the risk of 
> >> introducing another bug?  ISTM that the safe thing to do is the 
> >> refactoring that was suggested.
> >
> > If there's no safer way than the refactoring suggested back then, we 
> > will have to stay with this regression in Emacs 29.1 and install a 
> > better fix only on master.  After all, the fact that buffer-modified-p 
> > is not undone is a minor inconvenience at best.
> >
> 
> Indeed.  A safer way probably exists, but I would not dare writing that 
> patch.  I believe Stefan is in a better position to write it.

How about installing your patch, which you proposed back then, on
master, then?