<div dir="ltr"><font size="2"><font face="verdana,sans-serif">Here's a related problem.<br><br>The math symbols in XITS seem rather small. When trying to increase XITS character size with the Scale option, I noticed that math accents get amplified too much, and get placed too far from the subject symbols. The example below shows that by comparing XITS and Asana math fonts. <br>
<br>\documentclass{article}<br>\usepackage{fontspec}<br>\usepackage{xltxtra}<br>\usepackage{unicode-math}<br>\begin{document}<br>\setmathfont[Scale=2.5]{XITS}<br>$P'''$ <br>\setmathfont[Scale=1.5]{Asana Math}<br>
$P'''$<br>\end{document}<br><br><br>Kamal Abdali<br></font></font>================<br><br><div class="gmail_quote">On Sun, Oct 3, 2010 at 14:11, Khaled Hosny <span dir="ltr"><<a href="mailto:khaledhosny@eglug.org">khaledhosny@eglug.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On Sun, Oct 03, 2010 at 06:26:51PM +0100, José Carlos Santos wrote:<br>
> Hi all,<br>
><br>
> If I compile this file:<br>
><br>
> \documentclass{article}<br>
> \usepackage{fontspec}<br>
> \usepackage{xltxtra}<br>
> \usepackage{unicode-math}<br>
> \begin{document}<br>
> $P'$<br>
> \end{document}<br>
><br>
> I get this error message:<br>
><br>
> ! Undefined control sequence.<br>
> <argument> \um_prime_single_mchar<br>
><br>
> l.6 $P'$<br>
<br>
</div>You need to use a Unicode math font as well, TeXLive have XITS and<br>
Asana Math. There is no point in loading unicode-math without using a<br>
Unicode math font. I thin unicode-math package should handle this<br>
though, like issuing a warning or something.<br>
<font color="#888888"><br>
--<br>
Khaled Hosny<br>
Arabic localiser and member of Arabeyes.org team<br>
Free font developer<br>
</font><div><div></div><div class="h5"><br>
<br>
--------------------------------------------------<br>
Subscriptions, Archive, and List information, etc.:<br>
<a href="http://tug.org/mailman/listinfo/xetex" target="_blank">http://tug.org/mailman/listinfo/xetex</a><br>
</div></div></blockquote></div><br></div>