Am 26.06.2011 um 21:27 schrieb Pablo RodrÃguez:
> Hi there,
>
> I have just tried to compile the following sample:
>
> \documentclass{article}
> \usepackage{fontspec}
> \setmainfont{Minion Pro}
> \usepackage[spanish]{babel}
> \usepackage{unicode-math}
> \setmathfont{Minion Pro}
> \begin{document}
> $\frac{27,7}{100\,000}$ en varones
> \end{document}
>
> And it works with XeLaTeX, but not with LuaLaTeX. It seems to have
> problems with spanish from babel, but this is a must for me.
>
> I'm using TL 2010 updated as right now.
>
> I wonder whether this is a bug or I am missing something. Could anyone
> be so kind to tell me what is wrong here?
A short update on this: while we can fix this on the lualatex-math/unicode-math
end (see the discussion at GitHub), it is only a symptom of a deeper problem,
namely that the \mathcode, \mathchardef, \delcode, \radical etc. primitives are
deprecated with LuaTeX since they (unlike \char etc.) can't easily be extended
to allow Unicode code points. Therefore all packages that make use of any of
these primitives need to be fixed. We already have several fixes in the
lualatex-math package, but I think the best option would be to fix the package
code directly. What do you think about this? Who would be responsible for
things like the Babel problem?