str_nth_len      2136 string.c           return str_nth_len(p, e, &nth, enc);
str_nth_len      2145 string.c       	p = str_nth_len(p, e, &nth, enc);
str_nth_len      2314 string.c           else if ((p = str_nth_len(s, e, &beg, enc)) == e) {