bug#51883: 29.0.50; Command to get accidentally deleted frames back

[Eli Zaretskii]

> From: Michael Heerdegen <michael_heerdegen@web.de>
> Cc: Gregory Heytings <gregory@heytings.org>,  51883@debbugs.gnu.org,
>   juri@linkov.net
> Date: Sat, 27 Nov 2021 13:23:58 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > No, that's a misunderstanding, sorry.  I meant "C-x 5 u" to undelete
> > the most recently deleted frame, and 1 to 16 to mean undelete the
> > penultimate frame etc.  Basically ARG of N means undelete the N+1st
> > previously deleted frame.
> 
> 1 should undelete the second previously deleted frame?  I think it's
> already complicated to guess the correct N, and then I would also have
> to remember that I have to add or subtract 1... so why N+1?

You want to make "C-x 5 u" and "C-u 1 C-x 5 u" mean the same?  It's
possible, but we also have commands/functions that work like above,
no?