def forward_search_history(self, e): # (C-s)
        self._i_search(self._history.forward_search_history, 1, e)
Search forward starting at the current line and moving down
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/site-packages/pyreadline/modes/emacs.py/EmacsMode.forward_search_history