585     node = cmdutil.commit(ui, repo, commitfunc, pats, opts)

   585     node = cmdutil.commit(ui, repo, commitfunc, pats, opts)

   586     if not node:

   586     if not node:

   587         return

   587         return

   588     cl = repo.changelog

   588     cl = repo.changelog

   589     rev = cl.rev(node)

   589     rev = cl.rev(node)

   591     parents = cl.parentrevs(rev)

   590     parents = cl.parentrevs(rev)

   592     if rev - 1 in parents:

   591     if rev - 1 in parents:

   593         # one of the parents was the old tip

   592         # one of the parents was the old tip

   594         return

   593         return

   595     if (parents == (nullrev, nullrev) or

   594     if (parents == (nullrev, nullrev) or