prev: jump to parent's successor if parent is obsolete and topic is involved
`hg stack` shows a linear chain of commits even when they are not linear chain
and some changesets are obsoleted and have successors as separate head. This is
very nice to have a post evolution view of the stack. However when `hg prev` is
run on an unstable changeset whose parent is obsolete and does not topic but
parents successor has the topic, it shows no parent on the topic.
This patch makes `hg prev` update to parent's successor and make things follow
the stack order.
This software was downloaded from
https://www.mercurial-scm.org/repo/evolve/
Copyright 2011 Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
Logilab SA <contact@logilab.fr>
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
Patrick Mezard <patrick@mezard.eu>
This software may be used and distributed according to the terms of the GNU
General Public License version 2 or any later version.
On Debian systems, the complete text of the GNU General Public License version
2 can be found in `/usr/share/common-licenses/GPL-2'.