UTF16_IS_SURROGATE_SECOND   33 ext/mbstring/oniguruma/enc/utf16_be.c #define UTF16_IS_SURROGATE_SECOND(c)   (c >= 0xdc && c <= 0xdf)
UTF16_IS_SURROGATE_SECOND   33 ext/mbstring/oniguruma/enc/utf16_le.c #define UTF16_IS_SURROGATE_SECOND(c)   (c >= 0xdc && c <= 0xdf)