Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 
NAME
FcFontSetList - List fonts from a set of font sets
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcFontSet * FcFontSetList (FcConfig *config, FcFontSet **sets, intnsets, FcPattern *pattern, FcObjectSet
*object_set);
DESCRIPTION
Selects fonts matching pattern from sets, creates patterns from those fonts containing only the objects
in object_set and returns the set of unique such patterns. If config is NULL, the default configuration
is checked to be up to date, and used.