anchor.diff:  %%       _ -> refactor_undo ! {add, Files1}
   %%     end,
       %% Actually the result of writing to files should be checked!
  -    lists:foreach(F, Files).    
  +    lists:foreach(F, Files).   
   
   %% =====================================================================
   %% @spec tokenize(File::filename()) -> [token()]
  
positive.code: %% @see stop_tdTP/2
  %% @see once_tdTU/3
  -spec(full_buTP/3::(fun((syntaxTree(), any()) -> syntaxTree()), syntaxTree(), term())->
  	     syntaxTree()).			       
  full_buTP(Fun, Tree, Others) ->
      case refac_syntax:subtrees(Tree) of
        [] -> Fun(Tree, Others);
  
negative.code: to_lower(Str) ->
      to_lower(Str, []).
  
  to_lower([C | Cs], Acc) when C >= 65, C =< 90 ->
      to_lower(Cs, [C + (97 - 65) | Acc]);
  to_lower([C | Cs], Acc) -> to_lower(Cs, [C | Acc]);
  to_lower([], Acc) -> lists:reverse(Acc).
  
  