[luatex] \mathchardef\foo=\mathcode`\x

[jfbu]

Hi David,

> 
> [snip]
> David
> 
> For people wanting to use amsmath, a fix would be to change line 741
> of amsmath,sty  so it looks something like
> 
> \ifx\hyphenationmin\undefined
> \mathchardef\std at minus\mathcode`\-\relax
> \mathchardef\std at equal\mathcode`\=\relax
> \AtBeginDocument{%
>  \mathchardef\std at minus\mathcode`\-\relax
>  \mathchardef\std at equal\mathcode`\=\relax
> }
> \else
> \Umathcharnumdef\std at minus\Umathcodenum`\-\relax
> \Umathcharnumdef\std at equal\Umathcodenum`\=\relax
> \AtBeginDocument{%
>  \Umathcharnumdef\std at minus\Umathcodenum`\-\relax
>  \Umathcharnumdef\std at equal\Umathcodenum`\=\relax
> }
> \fi

I thought package lualatex-math by Philipp Stephani addressed
these amsmath problems with \std at minus and \std at equal already ?

as per  mathastext.sty package, it already does the right thing
but in a rather brutal way regarding \@newmcodes macro or amsmath

(it replaces it by \relax :-( )

best

Jean-François