def clone(self):
        sym = NonTerminal(self.r)
        sym.p = self.p
        sym.n = self.n
        return sym
Test execution of a multiline command.
dataset/ETHPy150Open ResilientScience/wot/wot/sequitur.py/NonTerminal.clone--crossover with--dataset/ETHPy150Open ipython/ipython-py3k/IPython/deathrow/oldfrontend/tests/test_prefilterfrontend.py/test_multiline