[luatex] Vital RTL issues in LuaTeX

وفا خلیقی vafakh9 at gmail.com
Fri Apr 10 13:19:25 CEST 2009

> This has to be handled at a higher level, the engine don't know about
> the directionality of individual characters, so you need to put numbers
> inside {\textdir TRT } or write lua code that applies bidirectional
> algorithm at node level.

No, it should be treated correctly by defualt.

> Personally, I think this is desirable, so that macros and styles written
> with LTR in mind, get mirrored in RTL, otherwise we will need to patch
> every single document style for Arabic, like with TeX--XeT as used in
> pdfTeX and XeTeX. However, you can swap the definitions at macro level
> if you want to.

with current condition I would say XeTeX>LuaTeX
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