FcLangSetAdd (3) - Linux Manuals
FcLangSetAdd: add a language to a langset
NAME
FcLangSetAdd - add a language to a langset
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcLangSetAdd (FcLangSet *ls, const FcChar8 *lang);
DESCRIPTION
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.