Re: Undo mode

[Eli Zaretskii]

> Date: Fri, 21 Jan 2022 13:50:03 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: luangruo@yahoo.com, juri@linkov.net, emacs-devel@gnu.org
> 
> > Why is it a problem to allow disabling undeletion of frames once that 
> > was enabled?
> 
> It's not a problem at all, but it's not what the "Enable Frame Undeletion" 
> menu item was meant to do.  It was meant to tell users that it is 
> necessary to add somethig their init files to enable that feature.

So now we have that indication, plus the ability of turning the mdoe
back off.  Why is that a problem?  Your original feature is still
there (albeit under a slightly different name), and there's an
_additional_ feature as well.  How is that a problem?

> I attach three possible solutions, in order of personal preference:

I'm sorry, I'm unable to discuss solutions to a problem I don't
understand.

Once again: what is the problem that needs to be fixed here, and why?
That Emacs behaves slightly differently from your original code is not
a problem in itself.