is_utf8_lead_byte 968 string.c if (is_utf8_lead_byte(*p)) len++;
is_utf8_lead_byte 978 string.c if (is_utf8_lead_byte(*p)) len++;
is_utf8_lead_byte 1361 string.c if (is_utf8_lead_byte(*p)) nth--;
is_utf8_lead_byte 1371 string.c if (is_utf8_lead_byte(*p)) {