bug#36940: tests slowness and failure after recent Tramp changes

[Eli Zaretskii]

> Date: Sun, 25 Aug 2019 12:51:05 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: eggert@cs.ucla.edu, stefan@marxist.se, 36940@debbugs.gnu.org
> 
> I think you should run the strings through
> ucs-normalize-HFS-NFD-string before comparing them, when the
> en/decoding is done with utf-8-hfs.  Alternatively, use the facilities
> in char-fold.el to generate a more lax regexp for your search in
> tramp--test-check-files.

As yet another possibility, avoid decomposable characters in the
strings you use altogether.  You can find out whether a given
character CH can be decomposed like this:

  (get-char-code-property CH 'decomposition)

For characters that have no decomposition, this should return a list
with a single element equal to CH.