bug#15426: 24.3.50; Multibyte filenames and directory-files in unibyte buffer

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Andreas Politz <politza@hochschule-trier.de>,  15426@debbugs.gnu.org
> Date: Sat, 21 Sep 2013 12:06:10 -0400
> 
> >> => ("/tmp/\301\203\300\204/." nil "/tmp/\303\204/." t)
> > "The minibuffer displays" is the key point here:
> 
> No, the key point is that the two strings should be identical

But you don't see the strings, except after they are inserted into
some buffer.

> So the current-buffer's multibyte setting somehow affects the
> directory-files function.  That's the bug.

Yes.  But the way to show the bug is not to display the strings, but
to pass them to multibyte-string-p, or some other function whose
output's display cannot be possibly affected by multibyte-ness.