5.017008
isALPHANUMERIC_LC              # U
isALPHANUMERIC_LC_uvchr        # U
isALPHANUMERIC_utf8            # U
isIDCONT_LC                    # U
isIDCONT_LC_uvchr              # U
WARN_EXPERIMENTAL__REGEX_SETS  # E
