FcLangSetAdd - add a language to a langset
#include <fontconfig.h>
FcBool FcLangSetAdd(FcLangSet *ls);
(const FcChar8 *lang);
.fi
lang is added to 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.
Fontconfig version 2.8.0
18 November 2009 FcLangSetAdd(3)