Creates a cached shaping plan suitable for reuse, for a combination of face, user_features, props, and shaper_list.
#hb_face_t to use
The #hb_segment_properties_t of the segment
The list of user-selected features
List of shapers to try
The shaping plan
Creates a cached shaping plan suitable for reuse, for a combination of face, user_features, props, and shaper_list.