797                 elif revs:

   797                 elif revs:

   798                     rev = get_rev(node)

   798                     rev = get_rev(node)

   799                     if rev is not None and rev in revs:

   799                     if rev is not None and rev in revs:

   800                         pendingnodes.add(node)

   800                         pendingnodes.add(node)

   801         seenmarkers = set()

   801         seenmarkers = set()

   803         precursorsmarkers = self.predecessors

   804         precursorsmarkers = self.predecessors

   804         succsmarkers = self.successors

   805         succsmarkers = self.successors

   805         children = self.children

   806         children = self.children

   806         while pendingnodes:

   807         while pendingnodes:

   807             direct = set()

   808             direct = set()