NAME

       FcCharSetMerge - Merge charsets

SYNOPSIS

       #include <fontconfig/fontconfig.h>

       FcBool FcCharSetMerge (FcCharSet *a, const FcCharSet *b, FcBool *changed);

DESCRIPTION

       Adds  all chars in b to a.  In other words, this is an in-place version of FcCharSetUnion.
       If changed is not NULL, then it returns whether any new chars from  b  were  added  to  a.
       Returns FcFalse on failure, either when a is a constant set or from running out of memory.