phabricator: update the hashes in commit messages as they get submitted Due to the sequence of actions (posting, amending the local commit, and then updating the Differential properties), the message in the commit is updated on the initial send but the message displayed in Phabricator is not. It should get updated there if the review is reposted. The data in the Commits tab is accurate for the first `phabsend`. Differential Revision: https://phab.mercurial-scm.org/D8950

rewriteutil: also consider pending obsoletes when updating hashes in messages Phabricator builds up the replacement commits and mapping in a single transaction, and then finalizes everything once the commits have been rewritten. That's too late when trying to update the messages for those commits. I'm a little concerned that this isn't a generic enough interface, since it doesn't mimic the list of list return of `obsutil.successorssets()`. But this is the type of mapping that phabricator maintains, and I don't think the methods that would be interested in calling this need to worry about split and divergence. We can fix that later if the need arises. Differential Revision: https://phab.mercurial-scm.org/D8949

rewriteutil: extract evolve code used to replace obsolete hashes in commits The evolve command uses it, but there are core things like `phabsend` and `rebase` that would also benefit. Differential Revision: https://phab.mercurial-scm.org/D8948

git: fix index handling of removed files during commit (issue6398) Other changes in this series also changed the behavior here in positive ways, but this was the final step that actually fixed things. Differential Revision: https://phab.mercurial-scm.org/D8999

git: make dirstate actually support listclean parameter As far as I can tell listignored and listunknown should already work. I'm vexed that there doesn't seem to be a way to get clean files out of the pygit2 status method, but this at least makes things work better. Differential Revision: https://phab.mercurial-scm.org/D8998

git: make dirstate status() respect matcher As with other changes in this stack, we appear to have been getting lucky in the past. An upcoming change behaved _very_ oddly without this fix. Differential Revision: https://phab.mercurial-scm.org/D8997

git: fix up dirstate use of index This was super-broken before, and somehow none of the existing attempts to use this code tripped on the defects here. Sigh. Differential Revision: https://phab.mercurial-scm.org/D8996

git: correctly handle "nothing changed" commits I guess localrepo.commit() actually returns an Optional[node], which is a bit of a surprise to me. Differential Revision: https://phab.mercurial-scm.org/D8995

localrepo: use functools.wraps() in unfilteredmethod decorator This makes it easier to figure out what function you're holding on to when doing printf-style debugging. Differential Revision: https://phab.mercurial-scm.org/D8994

git: actually copy treemanifest instances in .copy() (issue6398) The implementation here is so simple I honestly have no idea why I didn't do it at the time. Hopefully there's not some nuance past-me forgot to write down. Differential Revision: https://phab.mercurial-scm.org/D8993

log: fix crash and bad filematcher lookup by -fr'wdir()' PATH "-fr'wdir()' ADDED-PATH" is still wrong, which will be fixed in default branch.

hgdemandimport: bypass demandimport for _ast module (issue6407) This is broken on Python 3.9rc1, and while it sounds like there may be a fix in Python, we probably also should have this workaround in place in hg. See the bug for more details (including on bugs at redhat and b.p.o). Differential Revision: https://phab.mercurial-scm.org/D9004

git: restore basic functionality after b3040b6739ce We don't yet have a formal interface for the changelog, but it's mostly specified. Sadly, b3040b6739ce added a semi-private pseudo-enum that we need to cope with, so it's probably high time that someone (me?) attempts to define that interface to prevent future backsliding. Differential Revision: https://phab.mercurial-scm.org/D8992

git: convert tz offset to int (issue6359) Differential Revision: https://phab.mercurial-scm.org/D8991