code: def _all_escape(self):
          
          # Toggle all escaped URLs
          self.unesc = not self.unesc
          self.urls, self.urls_unesc = self.urls_unesc, self.urls
          urls = iter(self.urls)
          for item in self.items:
              # Each Column has (Text, Button). Update the Button label
              if isinstance(item, urwid.Columns):
                  item[1].set_label(shorten_url(next(urls),
                                                self.size[0],
                                                self.shorten))
docs: u