ONIGENC_IS_ASCII_CODE  157 enc/utf_16be.c   if (ONIGENC_IS_ASCII_CODE(*(p+1)) && *p == 0) {
ONIGENC_IS_ASCII_CODE  151 enc/utf_16le.c   if (ONIGENC_IS_ASCII_CODE(*p) && *(p+1) == 0) {
ONIGENC_IS_ASCII_CODE   96 enc/utf_32be.c   if (ONIGENC_IS_ASCII_CODE(*(p+3)) && *(p+2) == 0 && *(p+1) == 0 && *p == 0) {
ONIGENC_IS_ASCII_CODE   96 enc/utf_32le.c   if (ONIGENC_IS_ASCII_CODE(*p) && *(p+1) == 0 && *(p+2) == 0 && *(p+3) == 0) {
ONIGENC_IS_ASCII_CODE  802 encoding.c         return (ONIGENC_IS_ASCII_CODE(c)?ONIGENC_ASCII_CODE_TO_UPPER_CASE(c):(c));
ONIGENC_IS_ASCII_CODE  808 encoding.c         return (ONIGENC_IS_ASCII_CODE(c)?ONIGENC_ASCII_CODE_TO_LOWER_CASE(c):(c));