Re: An idea: combine-change-calls

[Stefan Monnier]

>> So, AFAIK it's handled properly by undo itself, undo-tree, and
>> undo-in-region.  Which "package that manipulate buffer-undo-list" are
>> you thinking of?
> Actually, undo-in-region is problematic.  Aside from undo-elt-in-region
> (see above), which is easy to fix, there is undo-adjust-elt "Return
> adjustment of undo element ELT by the undo DELTAS list.", which can't
> adjust the contents of an (apply ...) element,

Indeed, that's a very real problem.
I've moved this to bug#31035

> Why do we have undo-in-region at all?

Because it's a great feature.


        Stefan