FcConfigSubstituteWithPat − Execute substitutions

#include <fontconfig.h>

FcBool FcConfigSubstituteWithPat (FcConfig *config,
FcPattern *p, FcPattern *p_pat, FcMatchKind kind);

     Performs the sequence of pattern modification
operations, if kind is FcMatchPattern, then those tagged as
pattern operations are applied, else if kind is FcMatchFont,
those tagged as font operations are applied and p_pat is
used for <test> elements with target=pattern.

     Fontconfig version 2.4.2