Provided by: libfontconfig-doc_2.14.1-3ubuntu3_all 
NAME
FcLangSetEqual - test for matching langsets
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcLangSetEqual (const FcLangSet *ls_a, const FcLangSet *ls_b);
DESCRIPTION
Returns FcTrue if and only if ls_a supports precisely the same language and territory
combinations as ls_b.