debugsetparents: add various warning in the help message I am tired to see people shooting themself in the foot with this. So lets add more warning. At that point we should probably rename it or add extra confirmation flag. This is a debug command anyway we can break BC on it. Differential Revision: https://phab.mercurial-scm.org/D9534

largefiles: redo heads interception The largefiles extension replaces the "heads" wire command and tries to redirect all uses towards the custom "lheads" wire command. As seen in issue6384, this doesn't currently work for ssh. Instead of hooking into the _callstream interface, properly register the command for the peer instance and monkeypatch the executor to do the redirection. This works transparently for both all kinds of peers and both for the batch and non-batch case. Differential Revision: https://phab.mercurial-scm.org/D9663

nodemap: match comment to actual code REV_OFFSET constant is 2, not 10. Differential Revision: https://phab.mercurial-scm.org/D9688

clone: update to active bookmark, if set This cannot happen during a normal Mercurial clone, but is useful for extensions like hg-git where we know what to check out — the Git HEAD — but do not wish to track it later on using the `@` bookmark. Test Plan: I have not included an explicit test, as this is much more easily tested within the `hg-git` test suite. Differential Revision: https://phab.mercurial-scm.org/D9638

branchmap: micro-optimize branchinfo changelogrevision() is supposed to be used if not all data of changelog.read is used. This is the case here as only the extra field is used. This also improves extensibility as at least hgext.git doesn't implement changelog.read. Differential Revision: https://phab.mercurial-scm.org/D9626

contrib: py3 compat for perfnodemap Differential Revision: https://phab.mercurial-scm.org/D9687

comments: fix typos Differential Revision: https://phab.mercurial-scm.org/D9689

engine: unwrap a hard to understand for loop The loop was iterating over all the datafiles and maintaining a set to check whether filelogs have been processed, manifests have been processed or not. The code was hard to understand and it assumed that `alldatafiles` are ordered in a certain way. This refactors the for loop in separate parts for each manifests, changelog and filelogs. This will also help in future work where we will like more better handling on whether we want to upgrade filelogs or not. Differential Revision: https://phab.mercurial-scm.org/D9580

engine: refactor actual cloning code into separate function The `for ...` under which this cloning code exists is too complicated and based on certain assumptions. I am going to refactor it in next patches and make it bit saner. Differential Revision: https://phab.mercurial-scm.org/D9579

upgrade: move printing of unused optimizations to UpgradeOperation class Differential Revision: https://phab.mercurial-scm.org/D9578

upgrade: move `printrequirements()` to UpgradeOperation class Part of refactor where we make things more arranged and integrated into single `UpgradeOperation` class. Differential Revision: https://phab.mercurial-scm.org/D9577

upgrade: move `printoptimisations() to UpgradeOperation class Part of refactor where we make things more arranged and integrated into single `UpgradeOperation` class. Differential Revision: https://phab.mercurial-scm.org/D9576