#include <fontconfig.h> FcBool FcConfigSubstitute(FcConfig *config); (FcPattern *p); (FcMatchKind kind); .fi
Calls FcConfigSubstituteWithPat setting p_pat to NULL. Returns FcFalse if the substitution cannot be performed (due to allocation failure). Otherwise returns FcTrue. If config is NULL, the current configuration is used.
Fontconfig version 2.8.0