FcStrStr - locate UTF-8 substring
#include <fontconfig.h> FcChar8 * FcStrStr(const FcChar8 *s1); (const FcChar8 *s2); .fi
Returns the location of s2 in s1. Returns NULL if s2 is not present in s1. This test will operate properly with UTF8 encoded strings.
Fontconfig version 2.8.0 18 November 2009 FcStrStr(3)