bug#4175: 23.1; nxml-mode: Internal error in rng-validate-mode triggered

[Eli Zaretskii]

> From: Andrew Hyatt <ahyatt@gmail.com>
> Date: Thu, 11 Feb 2016 23:23:52 -0500
> Cc: 4175@debbugs.gnu.org
> 
> > emacs -Q
> > M-: (progn
> >      (switch-to-buffer
> >       (find-file
> >        (url-file-local-copy
> >         "http://karme.de/delme/test.svg";)))
> >      (nxml-mode)
> >      (switch-to-buffer "*Messages*"))
> >
> > I also attached the test file. If really needed I can create a stripped
> > down version.
> 
> I've verified this is still a problem in Emacs 25.

It doesn't happen for me, FWIW.

Can you show the offending regexp, and what code in nxml-mode creates
it?

Thanks.