us2                53 ext/fileinfo/libmagic/strcasestr.c 				*us2 = (const unsigned char *)s2;
us2                56 ext/fileinfo/libmagic/strcasestr.c 			if (tolower(*us1) != tolower(*us2++))
us2                57 ext/fileinfo/libmagic/strcasestr.c 				return tolower(*us1) - tolower(*--us2);