merge with stable

commands: switch one call of check_at_most_one_arg to strings This opts hasn't been through the byteskwargs mulcher, so we can just use strings here instead of bytes. Fixes the test changes from D8204 on Python 3, which was the only place this was a problem. Differential Revision: https://phab.mercurial-scm.org/D8222

cleanup: remove redundant clearing of mergestate in rebase and shelve `repo.commit()` now clears the merge state even if it ends up not creating a commit because there were no changes to commit. Differential Revision: https://phab.mercurial-scm.org/D8197

commit: clear resolved mergestate even if working copy is clean If the mergestate has resolved conflicts and a commit is successfully created (either because there are changes in the working copy or because ui.allowemptycommit=yes), we will also clear the merge state. However, if the working copy is clean (and ui.allowemptycommit=no), we leave the mergestate there. The user may notice it in `hg resolve -l` output (but not in `hg status -v` output). It's not clear how the user should clear it, but probably via `hg co -C .`. It's also quite likely that they won't even notice it and it will get cleared by a later `hg commit` (of unrelated changes). This patch makes it so that `hg commit` also clears resolved merge conflicts even if the command doesn't end up writing a commit because the working copy was empty. That's probably a little weird (commands that abort should generally avoid changing the repo), but it still seems mostly harmless, and it reduces the risk of more bugs like https://bz.mercurial-scm.org/show_bug.cgi?id=5494. I just ran into a version of that bug in the Evolve extension and that's what triggered this series. Differential Revision: https://phab.mercurial-scm.org/D8196

phabricator: avoid a stacktrace when command arguments are missing Previously, the TypeError wasn't properly converted to a SignatureError when improper arguments were supplied to the inner function, because the stack depth is 2 inside the vcrcommand decorator. The `__name__` and `__doc__` attributes need to be reassigned to the new wrapper so that the help summary is available. Differential Revision: https://phab.mercurial-scm.org/D8209

mq: don't tell user to commit merge that we already committed Differential Revision: https://phab.mercurial-scm.org/D8000

merge: make hg.merge() take a context instead of a node Many callers already have a repo, so we might as well pass that. `merge.update()` will look up the context object later. This patch is part of making it so we pass around the context object all the way down instead. I also removed the `repo` argument since it can be retrieved from the context. Differential Revision: https://phab.mercurial-scm.org/D7999

debugbackupbundle: introduce command to interact with strip backups This vendors backups extension from hg-experimental. Listing backups and having some utility to apply them is nice. I know we have obsmarkers now, but this will help a lot of end users who still uses strip until we get evolve out of experimental. Differential Revision: https://phab.mercurial-scm.org/D7932

test: cleanly skip test-remotefilelog-datapack.py on policy that breaks it That tests requires the pure module to be available. Differential Revision: https://phab.mercurial-scm.org/D8245

rust-format: cleanup ancestors.rs to make rustfmt happy Differential Revision: https://phab.mercurial-scm.org/D8224

heptapod-ci: use strict module policy Without this, test can silently fallback to other compatible policy in some cases. Differential Revision: https://phab.mercurial-scm.org/D8234

histedit: fix formatting after D8150 Differential Revision: https://phab.mercurial-scm.org/D8230