266     def drop_merge_data(self):

   267         """remove all "merge-only" from a DirstateItem

   268 

   269         This is to be call by the dirstatemap code when the second parent is dropped

   270         """

   271         if not (self.merged or self.from_p2):

   272             return

   273         self._p1_tracked = self.merged  # why is this not already properly set ?

   274 

   275         self._merged = False

   276         self._clean_p1 = False

   277         self._clean_p2 = False

   278         self._p2_tracked = False

   279         self._possibly_dirty = True

   280         self._mode = None

   281         self._size = None

   282         self._mtime = None

   283