Yes, I imagine that it was once correct and no longer.

To help prevent this issue in the future, Tramp could print a message
whenever the handler is installed yet commands other than the ones in the
list get run.

Thanks for the help! I have closed the PR on GitHub.

Eyal

On Sat, Oct 26, 2024, 06:22 Michael Albinus <michael.albinus@gmx.de> wrote:

> Version: 30.2
>
> Eyal Soha <eyalsoha@gmail.com> writes:
>
> Hi Eyal,
>
> > The comment here is not correct:
> >
> https://github.com/emacs-mirror/emacs/blob/2a6af880b0958d527a4d32005ef9acf3bc4ea030/lisp/net/tramp-sh.el#L3736-L3740
>
> The comment was correct. Meanwhile, vc-find-root has been added or
> extended, we need file-directorx-p therefore.
>
> > The command file-directory-p should also be cached.  Fortunately, the
> > result is already cached so all that is needed is to add this function
> > to the list.  Performance of the ssh commands for vc-register is
> > improved by 170% with this patch.
> >
> > It's described in detail here:
> > https://github.com/emacs-mirror/emacs/pull/43
> >
> > How can I help get this patch into the repository?
>
> Thanks for your comprehensive investigation. I've tried your changes,
> Tramp's regression tests still pass.
>
> So I have pushed it to the repositories. Will appear end of this month
> with Tramp 2.7.1.4 on GNU ELPA. Closing the bug.
>
> > Eyal
>
> Best regards, Michael.
>