true if the feature is found, false otherwiseotLayoutLanguageGetRequiredFeatureIndex
fn
harfbuzz.types.Bool otLayoutLanguageGetRequiredFeatureIndex(harfbuzz.face.Face face, harfbuzz.types.Tag tableTag, uint scriptIndex, uint languageIndex, out uint featureIndex)Fetches the index of a requested feature 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 |