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

[Dmitry Gutov]

On 10.11.2021 03:20, Lars Ingebrigtsen wrote:
> What is the situation with path separators on Windows, anyway?  If it
> uses "/", too, then this function isn't necessary -- split-string will
> do the job just as well.

IIRC, it allows backslashes (with such file names printed as 
"abc\\def"), but canonical file names use slashes even on Windows.

So... IDK, call some function which "canonicalizes" the file name 
(expand-file-name?) and then use split-string?

This works much faster in the same 'sudo' session:

  (split-string (expand-file-name buffer-file-name) "/")