anchor.diff:                                                           OrigFA, ClauseIndex, SearchPaths)
                                                  end}}
                       end;
  -                _ -> [Refac]
  +                none -> [Refac]
               end;
           {{TgtFile1, F,A},  {TgtFile2, NextTgtFileGen2}, NextFAGen}->
               Refac= fold_expr_1(File, TgtFile1, F, A, ClauseIndex, SearchPaths),
  
positive.code:         _ when is_atom(ModOrFile) ->
              Fs=[F||F<-Files, filename:basename(F,".erl")==atom_to_list(ModOrFile)],
              case Fs of 
                  [] -> [];
                  [F|_] -> [F]
              end;
          _ when is_list(ModOrFile)->
  
negative.code:               {F, NextFileGen}, FA, OldVarName, NewVarName, SearchPaths, -1)
      end.
  
  get_next_rename_var_command({_File, none}, _FA, 
                              _OldVarName, _NewVarName, _SearchPaths, 0) ->
      [];
  get_next_rename_var_command({_File, {lazy_file_gen,NextFileGen}}, FA, 
                              OldVarName, NewVarName, SearchPaths, 0) ->
      case NextFileGen() of
  