[luatex] a problem with luatexUmathcode

[Khaled Hosny]

On Sun, Oct 14, 2012 at 12:47:36PM +0200, jfbu wrote:
> 
> Le 14 oct. 2012 a 12:25, Taco Hoekwater <taco at elvenkind.com> wrote:
> 
> > On 10/12/2012 10:01 PM, jfbu wrote:
> >> Hi,  [I just posted on c.t.tex, but figured here could be better]
> >> 
> >> the following code gives dissimilar results for XeTeX
> >> and LuaLatex.
> >> 
> >> \documentclass{article}
> >> \usepackage{ifxetex}
> >> \begin{document}
> >> \ifxetex
> >> 
> >> \the\mathcode`\-           % 8704="2200
> >> \the\XeTeXmathcodenum`\-   % 37748736=2.2^{24} + 2.2^{21} + 0
> >> 
> >> \else
> >> 
> >> \the\mathcode`\-           % 8704 = "2200
> >> 
> >> \the\luatexUmathcodenum`\- % 8704, if interpreted as Unicode
> >>                            % mathcode 0.2^{24} + 0.2^{21} + 8704
> >> \fi
> >> \end{document}
> >> 
> >> This is a bit strange.
> > 
> > Somehow I misinterpreted what XeTeX did, so the current version
> > of \Umathcodenum in luatex remembers what the defining command was.
> > I can easily revert that to be compatible with XeTeX (after all,
> > that was the goal) but you will have to wait for the next release.
>
> As you tell me that in a later release the
> \luatexUmathcodenum will, as \XeTeXmathcodenum, always
> return a Unicode mathcode, this is good news to me as I have
> just have to wait until this is done, and then making
> mathastext finally compatible with Lualatex will be
> immediate.

This should be fixed in SVN r4467, hopefully it will be available TeX
Live 2013 release of LuaTeX.

Regards,
 Khaled