Provided by: libfontconfig1-dev_2.13.1-2ubuntu2_amd64 bug


       FcConfigSubstituteWithPat - Execute substitutions


       #include <fontconfig/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.
       Returns  FcFalse  if  the  substitution  cannot  be performed (due to allocation failure).
       Otherwise returns FcTrue.  If config is NULL, the current configuration is used.