.. efun:: int remove_input_to(object player)
  int remove_input_to(object player, string fun)
  int remove_input_to(object player, closure fun)
  int remove_input_to(object player, object fun)
  int remove_input_to(object player, object ob, string fun)

  Remove a pending input_to from the interactive :arg:`player` object. If the optional :arg:`fun` is not given, the most recently added input_to is removed.

  If the optional :arg:`fun` is given, the efun tries to find and remove the most recently added input_to matching the :arg:`fun` argument:

  - :arg:`fun` is a string: the input_to functionname has to match
  - :arg:`fun` is an object: the object the input_to function is bound to has to match
  - :arg:`fun` is a closure: the input_to closure has to match.
  - :arg:`ob` and :arg:`fun` are given: both the object and the functionname have to match

  .. todo:: should this be a table?

  Return 1 on success, or 0 on failure (no input_to found, object is not interactive or has no input_to pending).

  .. usage::

    Remove all pending input_to from the current user, if any::

      while (remove_input_to(this_interactive())) ;

  :history 3.2.9/3.3.119 introduced:

  .. seealso:: :efun:`input_to`, :efun:`find_input_to`, :efun:`input_to_info`, :efun:`query_input_pending`