anchor.diff:  error_reporting(Context, Level) ->
       ErrorsId = ephp_context:get_errors_id(Context),
       State = erlang:get(ErrorsId),
  -    erlang:put(ErrorsId, State#state{level=Level}),
  +    erlang:put(ErrorsId, State#state{level = Level}),
       State#state.level.
   
   -type throw_error() ::
  
positive.code:     run_quiet/2,
  
      error_reporting/2,
      error/1,
      handle_error/2,
      get_line/1
  
negative.code:     erlang:put(Ref, #state{}),
      {ok, Ref}.
  
  -spec destroy(ephp:errors_id()) -> ok.
  
  destroy(ErrorsId) ->
      erlang:erase(ErrorsId),
      ok.
  
  -spec set_error_format(context(), error_format()) -> ok.
  
  set_error_format(Context, Format) ->
      ErrorsId = erlang:get_errors_id(Context),
      State = erlang:get(ErrorsId),
      erlang:put(ErrorsId, State#state{format = Format}),
      ok.
  
  -spec error_reporting(context(), integer()) -> integer().
  