anchor.diff:  
   
   %% =====================================================================
  -%% @spec to_lower(Str::string()) -> string()
   %% @doc Convert a string into lower case.
   %% @see to_upper/1
   
  
positive.code: glast(_Info, List) -> lists:last(List).
  
  %% =====================================================================
  %% @spec to_upper(Str::string()) -> string()
  %% @doc Convert a string into upper case.
  %% @see to_lower/1
  
  
negative.code: 	    NewVarName
      end.
  
  -spec collect_var_names(syntaxTree()|[syntaxTree()]) ->
  			       [atom()].
  collect_var_names(Node) when is_list(Node) ->
      collect_var_names_1(refac_syntax:block_expr(Node));
  collect_var_names(Node) ->
  