#include <fontconfig/fontconfig.h>
FcBool FcLangSetDel(FcLangSet *ls, const FcChar8 *lang);
FcBool FcLangSetDel
lang is removed from ls. lang should be of the form Ll-Tt where Ll is a two or three letter language from ISO 639 and Tt is a territory from ISO 3166.
version 2.9.0