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Viewing changes to bzrlib/intset.py

add a clean target

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bzrlib/intset.py
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        if not self._val & m:
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            raise KeyError(to_remove)
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        self._val ^= m
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    def set_remove(self, to_remove):
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        """Remove all values that exist in to_remove.
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        >>> a = IntSet(range(10))
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        >>> b = IntSet([2,3,4,7,12])
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        >>> a.set_remove(b)
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        >>> list(a)
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        [0, 1, 5, 6, 8, 9]
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        >>> a.set_remove([1,2,5])
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        >>> list(a)
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        [0, 6, 8, 9]
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        """
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        if not isinstance(to_remove, IntSet):
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            self.set_remove(IntSet(to_remove))
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            return
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        intersect = self._val & to_remove._val
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        self._val ^= intersect
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