changeset 4726 | f6e961c0155b |
parent 4718 | 934275cd4526 |
child 4730 | eadfaa9ec487 |
--- a/mercurial/commands.py +++ b/mercurial/commands.py @@ -169,6 +169,9 @@ def backout(ui, repo, node=None, rev=Non if not rev: rev = node + if not rev: + raise util.Abort(_("please specify a revision to backout")) + cmdutil.bail_if_changed(repo) op1, op2 = repo.dirstate.parents() if op2 != nullid: