0E89
   0E8B-0E8C
   0E8E-0E93
   0E98
   0EA0
   0EA4
   0EA6
   0EA8-0EA9
   0EAC
   0EBA
   0EBE-0EBF
   0EC5
   0EC7
   0ECE-0ECF
   0EDA-0EDB
   0EDE-0EFF
   0F48
   0F6B-0F70
   0F8C-0F8F
   0F98
   0FBD
   0FCD-0FCE
   0FD0-0FFF
   1022
   1028
   102B
   1033-1035
   103A-103F
   105A-109F
   10C6-10CF
   10F9-10FA

   FE08; ; Map to nothing
   FE09; ; Map to nothing
   FE0A; ; Map to nothing
   FE0B; ; Map to nothing
   FE0C; ; Map to nothing
   FE0D; ; Map to nothing
   FE0E; ; Map to nothing
   FE0F; ; Map to nothing

}

@JvmField
val EMPTY_BYTE_ARRAY: ByteArray = ByteArray(0)

/** Byte order marks. */
internal val UNICODE_BOMS =
  Options.of(
    // UTF-8.
    "efbbbf".decodeHex(),
    // UTF-16BE.
    "feff".decodeHex(),
    // UTF-16LE.
    "fffe".decodeHex(),
    // UTF-32BE.
    "0000ffff".decodeHex(),
    // UTF-32LE.
    "ffff0000".decodeHex(),
  )

/**

# U+3000 is mapped to U+0020 (space) which is disallowed
http://GOO\u00a0\u3000goo.com

# Other types of space (no-break, zero-width, zero-width-no-break) are
# name-prepped away to nothing.
# U+200B, U+2060, and U+FEFF, are ignored
http://GOO\u200b\u2060\ufeffgoo.com  s:http p:/ h:googoo.com

# Ideographic full stop (full-width period for Chinese, etc.) should be
# treated as a dot.
# U+3002 is mapped to U+002E (dot)

   2028; LINE SEPARATOR
   2029; PARAGRAPH SEPARATOR
   2060; WORD JOINER
   2061; FUNCTION APPLICATION
   2062; INVISIBLE TIMES
   2063; INVISIBLE SEPARATOR
   206A-206F; [CONTROL CHARACTERS]
   FEFF; ZERO WIDTH NO-BREAK SPACE
   FFF9-FFFC; [CONTROL CHARACTERS]

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0EDD          ; mapped                 ; 0EAB 0EA1     # 1.1  LAO HO MO
0EDE..0EDF    ; valid                                  # 6.1  LAO LETTER KHMU GO..LAO LETTER KHMU NYO
0EE0..0EFF    ; disallowed                             # NA   <reserved-0EE0>..<reserved-0EFF>
0F00          ; valid                                  # 2.0  TIBETAN SYLLABLE OM