def non_incremental_reverse_search_history(self,current): # (M-p)
        return self._non_i_search(-1,current)
Search backward starting at the current line and moving up
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/site-packages/pyreadline/lineeditor/history.py/LineHistory.non_incremental_reverse_search_history