[XeTeX] bidi, math, and amstext

[Zdenek Wagner]

2014-09-27 22:12 GMT+02:00 Mike Maxwell <maxwell at umiacs.umd.edu>:
> On 9/27/2014 12:24 AM, Vafa Khalighi wrote:
>>
>> Well, I suppose you do not use low-level commands like \RL to typeset say
>> Arabic. Do you?
>
>
> We have been; perhaps relevant is the fact that we're typesetting small
> amounts of text in various right-to-left scripts in the middle of a bunch of
> left-to-right text (a grammar).
>
>> One usually defines an environment like:
>>
>> \newfontfamily\arabicfont[ExternalLocation,Script=Arabic]{amiri-regular}
>> \newenvironment{arabtext}{\begin{RTL}\@Latinfalse\arabicfont}{\end{RTL}
>>
>> or if you are defining commands:
>>
>> \newcommand*{\textarab}[1]{\RL{\@Latinfalse\arabicfont #1}}
>
>
> Ok, tried that; it (and also my original attempt at redefining \RL) fails
> for some reason in captions.  The minimal example is

Your definition is fragile but a robust macro is needed inside
\caption. Use \DeclareRobustCommand instead of \newcommand, the syntax
is the same.
> ---------------
> \documentclass{report}
> \usepackage{fontspec}
> \newfontfamily\ArabicFont[Script=Arabic]{Scheherazade}
>
> \usepackage{bidi}
> \makeatletter
> \@Latintrue
> \newcommand*{\ArabicScript}[1]{\RL{\@Latinfalse\ArabicFont #1}}
> \makeatother
>
> \begin{document}
>
> \begin{table}
> \caption{{\ArabicScript{دن}}}
> \end{table}
> \end{document}
> -----------
>
> The error msg is
>     ! Incomplete \iffalse; all text was ignored after line 15.
>     <inserted text>
>                     \fi
>     <*> RLBug.xetex
> --
>         Mike Maxwell
>         maxwell at umiacs.umd.edu
>         "My definition of an interesting universe is
>         one that has the capacity to study itself."
>         --Stephen Eastmond
>
>
>
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-- 
Zdeněk Wagner
http://hroch486.icpf.cas.cz/wagner/
http://icebearsoft.euweb.cz