Re: An idea: combine-change-calls

[Stefan Monnier]

> But the `(apply ...)' forms are a problem for exactly these other
> things. It's too powerful. The packages that manipulate buffer-undo-list
> can't (and don't try to) handle `apply' properly, since it can contain
> arbitrary effects.

AFAIK the (apply ...) has the needed constraints for undo-in-region to
handle it properly.  If not, we should fix it.
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?


        Stefan