true if the feature is found, false otherwiseotLayoutLanguageGetRequiredFeature
fn
harfbuzz.types.Bool otLayoutLanguageGetRequiredFeature(harfbuzz.face.Face face, harfbuzz.types.Tag tableTag, uint scriptIndex, uint languageIndex, out uint featureIndex, out harfbuzz.types.Tag featureTag)Fetches the tag of a requested feature index in the given face's GSUB or GPOS table, underneath the specified script and language.
Parameters
face | #hb_face_t to work upon |
tableTag | #HB_OT_TAG_GSUB or #HB_OT_TAG_GPOS |
scriptIndex | The index of the requested script tag |
languageIndex | The index of the requested language tag |
featureIndex | The index of the requested feature |
featureTag | The #hb_tag_t of the requested feature |