[XeTeX] new version of HarfBuzz

maxwell maxwell at umiacs.umd.edu
Fri Apr 21 18:37:04 CEST 2017

I believe (correct me if I'm wrong!) that xetex uses the HarfBuzz 
engine.  There was a bug in this engine that prevented a new Nastaliq 
font from SIL from working properly.  A fix for this bug has just been 
accepted (I believe it's this one: 
https://github.com/behdad/harfbuzz/pull/475).  It's not clear to me 
whether this can get into xetex before the next TeXLive release, given 
the schedule here:

    Mike Maxwell

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