DELIMITER_NEWLINE -> {
        continue
      }

      DELIMITER_DOT, DELIMITER_SPACE, DELIMITER_SEMICOLON -> {
        throw IOException("unexpected delimiter")
      }
    }

    // "002F" or "0000..002C"
    val sourceCodePoint0 = readHexadecimalUnsignedLong()
    val sourceCodePoint1 =
      when (select(optionsDot)) {
        DELIMITER_DOT -> {

    if (c <= '\u001f' || c >= '\u007f') {
      return true
    }
    // Check for the characters mentioned in the WHATWG Host parsing spec:
    // U+0000, U+0009, U+000A, U+000D, U+0020, "#", "%", "/", ":", "?", "@", "[", "\", and "]"
    // (excluding the characters covered above).
    if (" #%/:?@[\\]".indexOf(c) != -1) {
      return true
    }
  }
  return false
}

http://ExAmPlE.CoM http://other.com/ s:http p:/ h:example.com

# Spaces should fail
http://example\sexample.com

# This should fail
http://Goo%20\sgoo%7C|.com

# 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

   0226; 0227; Case map
   0228; 0229; Case map
   022A; 022B; Case map
   022C; 022D; Case map
   022E; 022F; Case map
   0230; 0231; Case map
   0232; 0233; Case map
   0345; 03B9; Case map
   037A; 0020 03B9; Additional folding
   0386; 03AC; Case map
   0388; 03AD; Case map
   0389; 03AE; Case map
   038A; 03AF; Case map
   038C; 03CC; Case map
   038E; 03CD; Case map
   038F; 03CE; Case map

3223          ; disallowed_STD3_mapped ; 0028 56DB 0029 #1.1  PARENTHESIZED IDEOGRAPH FOUR
3224          ; disallowed_STD3_mapped ; 0028 4E94 0029 #1.1  PARENTHESIZED IDEOGRAPH FIVE
3225          ; disallowed_STD3_mapped ; 0028 516D 0029 #1.1  PARENTHESIZED IDEOGRAPH SIX
3226          ; disallowed_STD3_mapped ; 0028 4E03 0029 #1.1  PARENTHESIZED IDEOGRAPH SEVEN