[luatex] Example of error when using \xfrac

[Scott Kostyshak]

Dear Henri,

Thanks for the quick reply, explanation, and advice!

Best,

Scott


On Tue, Sep 10, 2019 at 10:10:22AM +1200, Henri Menke wrote:
> Dear Scott,
> 
> This breaks because of luainputenc, which you should not be using in the first
> place.  It makes all kinds of Unicode characters active which blows up when
> building character tables in expl3.  If you insist on using luainputenc, you
> have to change the order of loading packages, like in the MWE below.  My advice
> is to just remove luainputenc, because recent LaTeX switches to UTF-8 by
> default and actually does the right thing.
> 
> Cheers, Henri
> 
> ---
> 
> \documentclass[english]{article}
> \usepackage{lmodern}
> \usepackage[LGR,T1]{fontenc}
> \usepackage{xfrac}
> \usepackage[utf8]{luainputenc}
> 
> \begin{document}
> \sfrac{A}{\kern-.08em S}
> \end{document}
> 
> On 9/10/19 8:27 AM, Scott Kostyshak wrote:> Hi,
> > 
> > I get an error when compiling the attached example file with LuaTeX on
> > an updated TL 2019 system. I also attach the log, which contains the
> > following error:
> > 
> >     ! Undefined control sequence.
> >     \GenericError  ...                                
> >                                                         #4  \errhelp \@err@     ...
> >     l.27238   }
> >              
> >     ? X
> > 
> > I don't know much about TeX (or LuaTeX), but the example file used to
> > compile on an older TL version. Is the example now invalid?
> > 
> > Best,
> > 
> > Scott
> > 
> 



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