rebase: move bookmark to destination for commits becoming empty (
issue5627)
When rebasing a changeset X and that changeset becomes empty, we should move
the bookmark on X to rebase destination.
This is a regression caused by the scmutil.cleanupnodes refactoring for
rebase.
The `adjustdest` function calculates the destination of bookmark movement.
It was back-ported from https://phab.mercurial-scm.org/D21. It might be
slightly more powerful than the minimal requirement to solve this issue.
For example, it's impossible for a merge changeset to become empty while any
of its ancestors does not become empty, but the code could handle that case.
Since the code is reasonably short and clean, and helps the upcoming D21
series, I'd like to check-in `adjustdest` now.
Thanks Martin von Zweigbergk for spotting corner cases (-k and descendant
with bookmarks) in this area!
setup: drop use of set literal so parsable on Python 2.6
Otherwise friendly error wouldn't be displayed.
setup: add extra logic to try and recommend a new pip on bad Python
Modern pip can detect supported Python versions (which we now
declare), and pull down a reasonable release. This trick was suggested
in http://bit.ly/pycon2017-build-bridges, and seems like a good
defensive maneuver so that when we want to move to Python 3 it's
less risky for existing users.
This moves the version-check logic after defining our printf function
so we can print more informative messages.
setup: explicitly declare supported Python versions
I think we should probably backport this to 4.2 as well, and do one
more release there that explicitly declares 2.6 support. That way
anyone stuck on Python 2.6 will end up getting the right hg if they
use a modern pip to install. Users can still use `python setup.py`
incantations to attempt installing Mercurial on unsupported Pythons,
including 3.5 and 3.6.
A followup change will switch to only doing our own
Python-version-check logic if we're not being installed by a
reasonable pip.
contrib: remove one test from the python 3 whitelist
439b4d005b4a introduced a use of 'hg revert --no-backup' which is
currently broken. Rather than try and do a fix on the (complicated)
revert code during the freeze, let's just give up on this test under
Python 3 until later. Once we do fix things, the test ratchet script
will re-enable it.
ui: fix configbytes isinstance check to look for bytes and not str
Fixes configbytes on Python 3.