bug#52349: 29.0.50; vc-git and diff-mode: stage hunks

[Juri Linkov]

> I don't know if I am missing something, but I don't think staging specific
> hunks from vc-git-mode or diff-mode is possible at the moment.
>
> Is adding such a capability to one (or both) of these modes worth
> considering? I know Magit does it, and I remember something similar in
> a git-gutter package. It's probably something diff-hl does as well by now
> (I have not checked).
>
> I feel like it'd be a nice improvement to VC, what do you think?

I tried to do what is described in the second part of
https://lists.gnu.org/archive/html/emacs-devel/2021-08/msg00207.html
Is this the same that you request here?