ONIGENC_IS_CODE_UPPER  149 include/ruby/encoding.h #define rb_enc_isupper(c,enc) ONIGENC_IS_CODE_UPPER(enc,c)
ONIGENC_IS_CODE_UPPER  314 regint.h          : (ONIGENC_IS_CODE_UPPER(enc,code) ? (code) - 'A' + 10 : (code) - 'a' + 10))