Am Wed, 03 Nov 2010 07:44:07 +0100 schrieb Tobias Schoel:
> Hi,
>
> \underbrace is doing strange things. Minimal example:
>
> \documentclass{minimal}
> \usepackage{fontspec}
> \usepackage{unicode-math}
> \setmainfont{TeX Gyre Pagella}
> \setmathfont{Asana Math}
> \begin{document}
> \[\underbrace{123}_{456}\]
> \end{document}
>
> Why is that and how to help?
With xetex \underbrace use internally the commands \bracelu,
\braceld and they simply don't give the correct glyphs with a
unicode-math font. That's certainly a problem unicode-math should
correct somehow (I don't know if the needed glyphs exists in the
fonts).
With luatex \underbrace seems to use \luatexUdelimiterunder, but I
don't know if the fact that the brace is above instead of below the
numbers indicates a luatex bug or wrong use of the luatex command on
the side of unicode-math.
--
Ulrike Fischer
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