anchor.diff:  get_level(?E_USER_DEPRECATED) -> <<"Deprecated">>;
   get_level(_) -> <<"Unknown">>.
   
  +-spec get_format() -> error_format().
  +
  +get_format() ->
  +    case ephp_config:get_bool(<<"html_errors">>, false) of
  +        true -> html;
  +        false -> text
  +    end.
  +
   -spec get_line(line() | undefined) -> non_neg_integer() | undefined.
   
   get_line(undefined) ->
  
positive.code:     ErrorsId = ephp_context:get_errors_id(Context),
      case erlang:get(ErrorsId) of
          #state{exception_handler = undefined,
                 format = Format,
                 modules = Modules,
                 output_handler = OutputHandler} ->
              {_, ErrorText} = get_message(Modules, Format, euncaught, Line, File,
                                           Level, {File, Line, Exception}),
              OutputHandler:set_output(Context, iolist_to_binary(ErrorText));
  
negative.code:     Line = get_line(Index),
      ErrorsId = ephp_context:get_errors_id(Context),
      ErrorState = erlang:get(ErrorsId),
      #state{modules = Modules} = ErrorState,
      Format = get_format(),
      {SimpleErrText, ErrorText} =
          get_message(Modules, Format, Type, Line, File, Level, Data),
      if
  