I believe that xetex should be unaffected by that bug, because that was
an issue with the harfbuzz interface to graphite, but xetex uses
graphite directly without going through the harfbuzz layer (provided you
load the font with the /GR option, or whatever the fontspec equivalent
of that is).
On 21/04/2017 17:37, maxwell wrote:
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:
https://www.tug.org/texlive/
Mike Maxwell
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