0 -> {
          // ;
          skipRestOfLine()
          IntRange(startCodePoint, startCodePoint)
        }
        1 -> {
          // '\n'
          IntRange(startCodePoint, startCodePoint)
        }
        2 -> {
          // '-'
          val endCodePoint = readHexadecimalUnsignedLong().toInt()
          skipRestOfLine()
          IntRange(startCodePoint, endCodePoint)
        }