#include <fontconfig.h> FcChar8 * FcStrStrIgnoreCase(const FcChar8 *s1); (const FcChar8 *s2); .fi
Returns the location of s2 in s1, ignoring case. Returns NULL if s2 is not present in s1. This test is case-insensitive for all proper UTF-8 encoded strings.
Fontconfig version 2.8.0