FcPatternAddWeak (3) - Linux Manuals
FcPatternAddWeak: Add a value to a pattern with weak binding
NAME
FcPatternAddWeak - Add a value to a pattern with weak binding
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcPatternAddWeak (FcPattern *p, const char *object, FcValue value, FcBool append);
DESCRIPTION
FcPatternAddWeak is essentially the same as FcPatternAdd except that any values added to the list have binding weak instead of strong.