man FcCharSetSubtract (Fonctions bibliothèques) - Subtract charsets
NAME
FcCharSetSubtract - Subtract charsets
SYNOPSIS
#include <fontconfig.h> FcCharSet * FcCharSetSubtract (const FcCharSet *a, const FcCharSet *b);
DESCRIPTION
Returns a set including only those chars found in a but not b.
VERSION
Fontconfig version 2.3.2