anchor.diff:  						    Err
   					    end;
   					false ->
  -					    output_atom_warning_msg(Pid, Fun),
  +					    output_atom_warning_msg(Pid, [Fun]),
   					    stop_atom_process(Pid),
   					    write_files(Editor, [{{FileName,FileName},AnnAST1}])
   				    end;				
  
positive.code: 	    Arg1 = refac_syntax:integer_value(Arg),
  	    DefMod = get_fun_def_mod(Fun),
  	    if (Fun_Name == OldName) and (Arg1 == Arity) and (DefMod == M) ->
  		    {refac_syntax:copy_attrs(Tree, refac_syntax:arity_qualifier(refac_syntax:atom(NewName), Arg)),
  		     true};
  	       true -> {Tree, false}
  	    end;
  
negative.code:       _ -> false
      end.
  
  -spec(check_atoms/4::(filename(), syntaxTree(), [atom()],pid()) ->ok).	     
  check_atoms(FileName, Tree, AtomNames, Pid) ->
      F = fun (T) ->
  		case refac_syntax:type(T) of
  		  function -> collect_atoms(T, AtomNames);
  		  _ -> []
  		end
  	end,
  