[Dev-luatex] Libhyphen

Khaled Hosny khaledhosny at eglug.org
Sat Sep 24 15:46:18 CEST 2011

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.


 Khaled Hosny

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