code: def history_search_backward(self, e): # ()
          u'''Search backward through the history for the string of characters
          between the start of the current line and the point. This is a
          non-incremental search. By default, this command is unbound.'''
          self.l_buffer=self._history.history_search_backward(self.l_bufferf history_search_backward(self, e): # ()
          u'''Search backward through the history for the string of characters
          between the start of the current line and the point. This is a
          non-incremental search. By default, this command is unbound.'''
          self.l_buffer=self._history.history_search_backward(self.l_buffer)
docs: u'''Search backward through the history for the string of characters
          between the start of the current line and the point. This is a
          non-incremental search. By default, this command is unbound.