bug#73357: [PATCH] Make vc-clone interactive

[Eli Zaretskii <eliz@gnu.org>]

> Date: Thu, 19 Sep 2024 16:18:16 +0300
> From:  Aleksandr Vityazev via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Cloning is used quite often, so I would like to have an interactive
> command. A patch is attached to the email. WDYT?

Thanks, but making this function a command will take more than just
adding the interactive form.  I think we need at least:

  . mention that in interactive usage the command prompts for the
    argument (why do we have to prompt for REV, btw?)
  . announce the change in NEWS
  . maybe update the user manual
  . maybe make the command fall back to 'checkout' method if 'clone'
    is not supported

> +    (when (file-directory-p directory)
> +      (if (called-interactively-p 'interactive)
> +          (find-file directory)
> +        directory))))

This changes the value returned by the function from what it did
before, no?