docs: def sys_pipes_forever(encoding=_default_encoding):
      """Redirect all C output to sys.stdout/err
      
      This is not a context manager; it turns on C-forwarding permanently.
      """
      global _mighty_wurlitzer
      if _mighty_wurlitzer is None:
          _mighty_wurlitzer = sys_pipes(encoding)
      _mighty_wurlitzer.__enter__()