Provided by: libfontconfig1-dev_2.13.1-2ubuntu3_amd64 bug

NAME
       FcCharSetUnion - Add charsets


SYNOPSIS
       #include <fontconfig/fontconfig.h>

       FcCharSet * FcCharSetUnion (const FcCharSet *a, const FcCharSet *b);


DESCRIPTION
       Returns a set including only those chars found in either a or b.

Fontconfig 2.13.1                                 06 April 2020                                FcCharSetUnion(3)