bug#51897: 29.0.50; keymap-global-unset cannot unset C-x C-z

[Juri Linkov]

> After thinking about it a bit more, I'm not quite sure what I'd prefer
> myself.  It's not uncommon for me that I remember something after I've
> hit `C-x v v' (like adding Copyright-paperwork-exempt: yes to the commit
> message), and having this be a two step operation helps with that,
> because I can just back out the commit and try again, which I can't if
> I've already pushed.

Also there is a useful feature 'vc-git-log-edit-toggle-amend'
to amend the last commit before pushing.

Maybe 'C-x v v' could just display a reminder message like
"Don't forget to push your commits"?