bug#25038: 25.1; Accent in Windows username prevents Emacs from loading customizations

[Eli Zaretskii]

> From: Márton Marczell <dalokmarcinak@gmail.com>
> Date: Sat, 26 Nov 2016 21:57:46 +0100
> Cc: 25038@debbugs.gnu.org
> 
> What's worse, it seems completely random whether the error comes up. For some 
> files it doesn't appear, for
> some files it does. But if I open the same file repeatedly it always does the 
> same thing. So for a certain file it is
> consistent. It is not dependent on the file extension though.

Can you try figuring out which files trigger the problem and which
ones don't?  Does their directory or disk matter, perhaps?  Or maybe
whether they exceed the 8+3 file-name limits?  Or something else?