Idris Samawi Hamid ادريس سماوي حامد wrote:
On Mon, 06 Apr 2009 00:40:12 -0600, Khaled Hosny <khaledho...@eglug.org>
wrote:
The attached patch adds Arabic coma, semicolon, full stop (used in Urdu)
and question mark to font-ext.lua for protrusion.
Now, combined with glyph expansion, I don't get any overfull boxes.
Arabic-script microtypography is one of the cornerstones of the Oriental
TeX project. We've been studying this matter for some time now:
Because of
a) the normal wide spacing around Arabic punctuation, and
b) the large size of Arabic punctuation relative to Latin,
I'm not sure that protrusion of Arabic-script punctuation is a good
idea. It needs a lot of thought, and a lot of testing, before adding it
to the system. As for glyph expansion, I don't see how that works at all
with the current model, except perhaps with very horizontal fonts. But
in that case all that's needed is smart tatweel, not glyph expansion.
For hq fonts the current glyph expansion model will mess up the
contextual connections.
Although one can certainly do things with the current model of
protrusion and hz, we need more, much more. Khaled, send me some tests
off-list and I'll examine them in light of the overall analysis as we
prepare for adding Arabic microtypography support, hopefully pretty
soon. Thanks plenty for the contributions, and
ok; in the meantime i added his patches since they don't hurt
Hans
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