894         def setstate(self, state, nodes):

   894         def setstate(self, state, nodes):

   895             """change state of targets changeset and it's ancestors.

   895             """change state of targets changeset and it's ancestors.

   896 

   896 

   897             Simplify the list of head."""

   897             Simplify the list of head."""

   898             assert not isinstance(nodes, basestring), repr(nodes)

   898             assert not isinstance(nodes, basestring), repr(nodes)

   899             heads = self._statesheads[state]

   901             heads = self._statesheads[state]

   900             olds = heads[:]

   902             olds = heads[:]

   901             heads.extend(nodes)

   903             heads.extend(nodes)

   902             heads[:] = set(heads)

   904             heads[:] = set(heads)

   903             heads.sort()

   905             heads.sort()