298         if node in known:

   298         if node in known:

   299             return []

   299             return []

   300 

   300 

   301         rl = self._revlog(name)

   301         rl = self._revlog(name)

   302         ancestors = {}

   302         ancestors = {}

   304         for ancrev in rl.ancestors([rl.rev(node)], inclusive=True):

   304         for ancrev in rl.ancestors([rl.rev(node)], inclusive=True):

   305             ancnode = rl.node(ancrev)

   305             ancnode = rl.node(ancrev)

   306             missing.discard(ancnode)

   306             missing.discard(ancnode)

   307 

   307 

   308             p1, p2 = rl.parents(ancnode)

   308             p1, p2 = rl.parents(ancnode)