select_cat (Raggle::Interfaces::NcursesInterface)

    # File raggle, line 3638
          def NcursesInterface::select_cat(str)
            $old_cat = $category || 'all'
            $category = str

            unless $old_cat == $category  # rebuild feeds in new category
              # rebuild feed window
              NcursesInterface::populate_feed_win

              # select feed window and select top feed
              w_id = NcursesInterface::get_win_id('feed')
              NcursesInterface::set_active_win(w_id)
              $wins[w_id].activate 0
            else  # just go back to old window if category didn't change
              NcursesInterface::goto_old_win
            end

            # delete category window
            $wins[NcursesInterface::get_win_id('cat')].close
          end