substitutionFeatures
Queries the substitution (GSUB) features of this face for the given script, delegates to TextShapingDriver.querySubstitutionFeatures.
Return
a list of feature tags
Parameters
script
the script to query features for
Queries the substitution (GSUB) features of this face for the given script, delegates to TextShapingDriver.querySubstitutionFeatures.
a list of feature tags
the script to query features for