bug#50572: 28.0.50; [PATCH] fix VC to find the responsible backend with the most specific path.

[Dmitry Gutov]

On 14.09.2021 14:38, Eli Zaretskii wrote:
> > FWIW, I think the most specific should be the default of
> > "C-x v v"
> I'm worried that we are arbitrarily changing the defaults, for the
> sole reason that the new default plays better with someone's
> workflows.  AFAIR, it used to be the case that the order of VCS names
> in vc-handled-backends determined the way the default is sought out
> and set.  This change (and I think the other one Dmitry mentioned in
> his response?) change that in a way that doesn't leave any "fire
> escape" to users who might be setting things up to have a meaningful
> (for them) order in that list.

It's really more of a discussion for bug#42966. Because no matter how 
one feels about that change (I don't have a strong opinion), these two 
pieces of code should follow the same pattern.

Now, the change in vc-responsible-backend might seem controversial, as 
it decreases customizability and performance (a bit), but it was made a 
year ago, and we've received no substantial complaints. And there have 
been multiple reports (all linked) about the previous behavior.