[XeTeX] xetex and xelatex bug in MiKTeX 2.9

[Ulrike Fischer]

Am Fri, 8 Jul 2011 15:29:21 +1000 schrieb Vafa Khalighi:

> Several users has reported that xetex and xelatex included in MikTeX 2.9
> (and perhaps MiKTeX 2.8) is buggy. The minimal document is:
> 
> \documentclass{article}
> \usepackage{fontspec}
> \setmainfont[Script=Arabic,Mapping=parsidigits]{XB Zar}% replace it with any
> other Arabic/Persian font that you have
> \usepackage{bidi}
> \setRTL
> \begin{document}
> \begin{equation}
> 1+2=3
> \end{equation}
> \end{document}
> 
> The reported problem is that equation number does not appear in the PDF. Can
> anyone confirm this 

Yes. The equation number is printed with round braces and when a
font with Script=Arabic is used round braces has interesting side
effects on numbers. 

\documentclass{article}
\font\test="Scheherazade/ICU:script=arab;language=DFLT;"
\begin{document}\test
123 (123 abc 

123 (123abc

345  789)
\end{document}


gives as output

123 abc

123 (123abc

345 (78

So numbers and the braces are swallowed in some cases.

> and if yes, would this be fixed in MiKTeX 2.9 (and perhaps in MiKTeX 2.8).

If it is only a miktex bug and if the source can be found ... But at
first it should be checked that it is not a xetex bug. 
Miktex uses the version:
This is XeTeX, Version 3.1415926-2.3-0.9997.5 (MiKTeX 2.9)

-- 
Ulrike Fischer