def non_incremental_reverse_search_history(self, e): # (M-p)
        q=self._history.non_incremental_reverse_search_history(self.l_buffer)
        self.l_buffer=q
Search backward starting at the current line and moving up
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/site-packages/pyreadline/modes/emacs.py/EmacsMode.non_incremental_reverse_search_history