anchor.diff:   
   rename_var_1(File, FA, VarFilter, NewVarName, SearchPaths) ->
       FAs= get_fun_arity(File, FA),
  -    io:format("FAs:~p\n", [FAs]),
       [{refactoring, rename_var, 
         [File, {F, A}, V, new_name_gen(File, {F, A}, V, NewVarName), 
          SearchPaths, ?context]}
  
positive.code:     lists:append(CmdLists);
  rename_var(ModOrFile, FA, OldVarName, NewVarName, true, SearchPaths) ->
      File=gen_file_names(ModOrFile, true, SearchPaths),
      io:format("File:~p\n", [File]),
      case File of
          [] -> 
              [];
  
negative.code: %% @doc Command generator for renaming variable names.
  %%@hidden
  rename_var(ModOrFile, FA, OldVarName, NewVarName, SearchPaths) ->
      rename_var(ModOrFile, FA, OldVarName, NewVarName, true, SearchPaths).
      
  
  %% @doc Command generator for renaming variable names.
  -spec rename_var(ModOrFile::mod_or_file(), 
  