FFccLLaannggSSeettHHaassLLaanngg checks whether _l_s supports _l_a_n_g. If _l_s has a matching language and territory pair, this function returns FcLangEqual. If _l_s has a matching language but differs in which territory that language is for, this function returns FcLangDiffentTerritory. If _l_s has no matching language, this function returns FcLangDifferentLang.
Fontconfig version 2.6.0