[luatex] dvilualatex fails with hyperref in TL 2016 pretest

[Scott Kostyshak]

On Mon, May 23, 2016 at 02:10:07AM +0100, David Carlisle wrote:
> On 22 May 2016 at 23:49, Scott Kostyshak <skostysh at lyx.org> wrote:
> > Dear all,
> >
> > The following example fails to compile with dvilualatex, with or without
> > the luatex85 package. Is this expected?
> 
> Not totally unexpected.
> 
> >  It compiles without error with
> > TL 2015.
> >
> > -----
> > \documentclass{article}
> > \usepackage{luatex85}
> > \usepackage[T1]{fontenc}
> > \usepackage[latin9]{luainputenc}
> > \usepackage{hyperref}
> >
> > \begin{document}
> > hello
> > \end{document}
> > -----
> >
> > I get the following error:
> >
> > -----
> > ! unexpected use of \pdffeedback.
> > \pdftexversion ->\numexpr \pdffeedback
> >                                        version\relax
> > l.4771 \ifnum\pdftexversion
> >                          =140 %
> > -----
> >
> > By the way, I don't actually use dvilualatex but I have no idea if some
> > of our users do so that is why I'm interested.
> >
> > Scott
> 
> Actually more worrying than the fact that it gives an error in
> dviluatex is that it does
> the wrong thing without error in luatex it's comparing the number to
> 140 but luatex
> sets this (somewhat arbitrarily) to 40 so even when it is set in pdf
> mode the numeric
> test is meaningless.
> 
> the "40" might be an issue for luatex but anyway the main issue is
> that hyperref shouldn't
> be testing this at all in luatex now. I'll see what I can do.

Thanks for taking a look.

> https://github.com/ho-tex/hyperref/issues
> 
> 
> better than this list for hyperref specific issues.

OK, since hyperref worked well with other engines and it used to work
well in the older LuaTeX version I thought the issue was more likely to
be LuaTeX-specific.

Scott
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