otLayoutLookupSubstituteClosure
fun otLayoutLookupSubstituteClosure(face: Face, lookupIndex: <Error class: unknown class>, glyphs: Set)
Compute the transitive closure of glyphs needed for a specified lookup.
Since
0.9.7
Parameters
face
#hb_face_t to work upon
lookupIndex
index of the feature lookup to query
glyphs
Array of glyphs comprising the transitive closure of the lookup