docs: def _line_parse(line):
      """Removes line ending characters and returns a tuple (`stripped_line`,
      `is_terminated`).
      """
      if line[-2:] in ["\r\n", b"\r\n"]:
          return line[:-2], True
      elif line[-1:] in ["\r", "\n", b"\r", b"\n"]:
          return line[:-1], True
      return line, False