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Functions for using HarfBuzz with fonts that include Graphite features.
For Graphite features to work, you must be sure that HarfBuzz was compiled
with the graphite2
shaping engine enabled. Currently, the default is to
not enable graphite2
shaping.
#define HB_GRAPHITE2_TAG_SILF HB_TAG('S','i','l','f')
The hb_tag_t tag for the Silf
table, which holds Graphite
features.
For more information, see http://graphite.sil.org/