bug#29287: tramp-test25-file-selinux fails

[Michael Albinus]

Glenn Morris <rgm@gnu.org> writes:

> Perhaps you could use something (file-selinux-context "/") for a value
> that is guaranteed to exist and be different from a temp file.
> Though I don't know if users can always set a random file's context to
> root_t (it works here).

I've used another approach, hoping it is generic enough.

Could you, pls, check whether my patch (committed to the emacs-26
branch) works for you?

Thanks, and best regards, Michael.