bug#32520: 26.1; problem with CIFS mounts

[emacs]

> I think you want to set vc-ignore-dir-regexp (to the same value as
> locate-dominating-stop-dir-regexp) for this.

Yup, that does it, thanks!

I thought I had done something similar for XEmacs a long
time ago, but couldn't find it in my old XEmacs setup files.

I also don't recall this being a problem with Emacs < 26.

Thanks again,

-- Henrique