On Thu, Sep 22, 2011 at 07:29:38PM +0200, Stephan Hennig wrote:
schrieb Khaled Hosny:
On Wed, Sep 21, 2011 at 06:22:18PM +0200, Stephan Hennig wrote:
For Arabic script, I referred to glyph substitution. But I don't know enough about Arabic script to explain further. :)
Arabic handling in luatex (or rather luatex based packages) is done by OpenType layout features processed by lua code, no engine techniques are involved.
Didn't I warn you, I don't know much about Arabic script? :) What OpenType features are there that are used in Arabic script? Is OpenType powerful enough to solve all script related typesetting problems in Arabic typography? Lucky you!
More or less, and there are fonts addressing fairly complex problems implemented in OpenType. Of course it does not solve everything, but it has fairly generic mechanisms to address the vast majority of Arabic typographic issues. Regards, Khaled -- Khaled Hosny Egyptian Arab