anchor.diff:  %% get_pretty_proc_info(Pid) ->
   %%     get_pretty_proc_info(Pid, current_function).
   
  -get_pretty_proc_info(Pid, Acf) ->
  +get_pretty_proc_or_port_info(Pid, Acf) when is_pid(Pid) ->
       case process_info(Pid, [registered_name, initial_call, current_function,
                               message_queue_len]) of
           undefined ->
  
positive.code:     NewTimerRef = reset_timer(TimerRef),
      maybe_collect_garbage(Type),
      {ok, State#state{timer_ref=NewTimerRef}};
  handle_event({monitor, Pid, Type, Info}, State=#state{timer_ref=TimerRef}) ->
      %% Reset the inactivity timeout
      NewTimerRef = reset_timer(TimerRef),
      {Fmt, Args} = format_pretty_proc_info(Pid, almost_current_function),
      lager:info("monitor ~w ~w "++ Fmt ++ " ~w",
                            [Type, Pid] ++ Args ++ [Info]),
      {ok, State#state{timer_ref=NewTimerRef}};
  handle_event(Event, State=#state{timer_ref=TimerRef}) ->
      NewTimerRef = reset_timer(TimerRef),
  
negative.code: %% format_pretty_proc_info(Pid) ->
  %%     format_pretty_proc_info(Pid, current_function).
  
  format_pretty_proc_or_port_info(PidOrPort, Acf) ->
      try
          case get_pretty_proc_or_port_info(PidOrPort, Acf) of
              undefined ->
                  {"", []};
              Res ->
                  Res
          end
      catch X:Y ->
          {"Pid ~w, ~W ~W at ~w\n",
              [PidOrPort, X, 20, Y, 20, erlang:get_stacktrace()]}
      end.
  
  %% Enabling warnings_as_errors prevents a build since this function is
  