[XeTeX] Reducing ligatures in arabxetex

Juan Acevedo juan.acevedo at gmx.net
Sat Feb 18 19:12:52 CET 2012

Thanks for all the input, everybody.

Now turning back to arabxetex, I would like to use this specific beautiful Arabic font, Amiri (v.0.101, downloadable here http://www.amirifont.org/, with thanks to Khaled). 

Trying to overrule with fontspec the default ligatures of the font, I look up its OpenType features, and otfinfo gives me only one line:
mark	Mark Positioning

But when I check the Fonts>Typography options in OSX TextEdit, there are two!
Alternative Stylistic Sets
Character Alternates

If I untick Contextual Alternates within Character Alternates, then presto, I obtain the desired effect: to use only mandatory ligatures. To give a visual reference, I am attaching a screen picture where the first line has full ligatures (=Contextual Alternates), and the second only mandatory ligatures.

Now, I find strange that otfinfo is not showing these other features, but I find unbelievable that fonstspec cannot fiddle with these additional features, so I'm sure one of you will know how to go about it.

With hope in your replies!
And thanks,
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