phabricator: add a config knob to create obsolete markers when importing This too can get a tristate switch if desired. But if so, that needs to happen by having evolve add the option. Differential Revision: https://phab.mercurial-scm.org/D8138

phabricator: add a config knob to import in the secret phase For my use anyway, it's better to have a config knob that's always set than to try to remember a switch. But we can add a tristate switch if desired. Differential Revision: https://phab.mercurial-scm.org/D8137

phabricator: add a `phabimport` command I've had `alias.phabimport = $hg phabread --stack $1 | $hg import --bypass -` for a while now, and I suspect others do too. That's limited though, in that it can't use the information on Phabricator to restore it in the original location, so I'm making it a first class command. This doesn't do anything ambitious like that- this is mostly a simplification of `hg import` to get the equivalent of the alias mentioned above. The `--bypass` option is hardcoded to be enabled and the message about amending rejects dropped (rejects aren't created with `--bypass`), because editing patches on Phabricator seems like an unusual workflow. This will need other options, like `--obsolete` and `--secret`. I think these would be more useful as config settings, as I imagine the workflows are pretty fixed depending on roles. Reviewers who don't queue patches probably never want `--obsolete`, but may need `--secret`. Reviewers who do will want the former, but not the latter. I left `--stack` as an option, but that should probably be a config knob too (or at least default to on)- if the point of this is to avoid rejects, it doesn't make sense to skip dependencies in most cases. Evolve is going to need a fix to its wrapping of `cmdutil.tryimportone()`, as it currently assumes `opts` has an `obsolete` key. It's worked around for now. Differential Revision: https://phab.mercurial-scm.org/D8136

rust: update the README with more up-to-date and thorough information Differential Revision: https://phab.mercurial-scm.org/D8274

transactions: convert changes['phases'] to list of ranges Consecutive revisions are often in the same phase, especially public revisions. This means that a dictionary keyed by the revision for the phase transitions is highly redundant. Build a list of (range, (old, new)) entries instead and aggressively merge ranges with the same transition. For the test case in issue5691, this reduces memory use by ~20MB. Differential Revision: https://phab.mercurial-scm.org/D8125

test-install: don't print Rust re2 bindings information if Rust is not in use Differential Revision: https://phab.mercurial-scm.org/D8273

tests: drop an extraneous (glob) from test-debugbackupbundle.t Since this was not needed, it ends up causing the test to end with an error saying that the output changed, but with no diff and a message at the end saying "no result code from test". Differential Revision: https://phab.mercurial-scm.org/D8269

pull: add `--confirm` flag to confirm before writing changes This introduces a new flag to pull command `--confirm` and also a config option named `pull.confirm` which if used will prompt user describing changes which are pulled and asking whether to accept them or not. Differential Revision: https://phab.mercurial-scm.org/D8200

scmutil: add option to register summary callbacks as transaction validators We have a list of summary callbacks which are run after the transaction is closed to show what has changed and what not. This patch makes it possible to register those callbacks as transaction validators so that we can show summary before committing the transaction and prompt user to accept the changes. The goal of this is to implement `pull --confirm`. Differential Revision: https://phab.mercurial-scm.org/D8199

transaction: add functionality to have multiple validators This will help us in adding more validators which can aggregate data from transaction and prompt user whether to commit the transaction or not. The current target is to use this to implement `pull --confirm`. Differential Revision: https://phab.mercurial-scm.org/D8198