On Wed, 26 Dec 2007 12:32:50 -0700, Hans Hagen <pragma@wxs.nl> wrote:

> Idris Samawi Hamid wrote:
>
>> Two things:
>>
>> 1. The \sh@ft macro (from TeXBook, p.~356) does not work in luatex (see
>> test file, pdftex works);
>>
>> 2. In any case: Is there a better way to do this (see test file)?
>
> as taco mentioned ... most open type fonts have no italic correction
>
> automatically figuring it out is not always an option, compare (in
> pdftex):
>
> \sl \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>
> \bs \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>
> \it \the\fontdimen1\font\the\dimexpr1em\relax \`A \'A
>
> i can imagine that we start building a database with additional font
> parameters

I spent a few hours on a workaround. Attached is my temporary code for  
Arabic transliteration. I found a way to define U-02BE and U-02BF for  
Latin Modern (thanks to Wolfgang and Peter for helping me with \ifx). It  
does work well but feel free to suggest improvements!

(A bug: \defineactivecharacter ḻ {\~l} does not work if \showboxes is  
invoked; weird)

Best wishes
Idris

-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

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