BOOST_SPIRIT_X3_CHAR_CLASS(encoding, alnum) \
BOOST_SPIRIT_X3_CHAR_CLASS(encoding, alpha) \
BOOST_SPIRIT_X3_CHAR_CLASS(encoding, digit) \
BOOST_SPIRIT_X3_CHAR_CLASS(encoding, alnum) \
BOOST_SPIRIT_X3_CHAR_CLASS(encoding, alpha) \
BOOST_SPIRIT_X3_CHAR_CLASS(encoding, digit) \