[luatex] incompatible change to mathcode

[Kazuki Maeda]

Dear all

Thanks for the commit #6176 by Khaled Hosny.
I have tried the bm.sty sample code submitted to LaTeX Project
http://www.latex-project.org/cgi-bin/ltxbugs2html?pr=tools/4188
with rev 4410.


This is LuaTeX, Version beta-0.71.0-2012050922
 \write18 enabled.
(./test.tex
LaTeX2e <2011/06/27>
LuaTeX adaptation of babel <v3.8l-luatex-1.5> and hyphenation patterns for engl
ish, dumylang, nohyphenation, loaded.
(/usr/local/texlive/2011/texmf-dist/tex/latex/base/article.cls
Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
(/usr/local/texlive/2011/texmf-dist/tex/latex/base/size10.clo))
(/usr/local/texlive/2011/texmf-dist/tex/latex/tools/bm.sty) (./test.aux)
! Extended mathchar used as mathchar (0).
<to be read again>
                   \begingroup
l.4 $\bm{a}
           $
?


Why?

After processing $\bm{a}$, I got
> \bm at command=macro:
->\mathchar 30049 .


Best regards,
Kazuki Maeda