revset: document the `revset(...)` syntax We introduce a new "no-op" function to bear the documentation. In practice, the parsing step is skipping it so it is not even called. This will get fixed in the next changeset.

check-commit: update test expectation per removal of "double empty line" rule Follow up for 47084b5ffd80.

style: drop requirement to only use single lines between top-level objects Differential Revision: https://phab.mercurial-scm.org/D5105

py3: byteify extension in test-relink.t

f: fix a Python 3 bytes/string issue I suspect we should test this tool in isolation, but we don't yet. Oh well. Differential Revision: https://phab.mercurial-scm.org/D5061

tests: use regex instead of Python versions for archive hash changes It turns out this behavior changed between versions of Python 3. Let's just always accept either size or sha1, and move on. Differential Revision: https://phab.mercurial-scm.org/D5104

notify: a ton of encoding dancing to deal with the email module Almost fixes test-keyword.t on Python 3, but leaves us with some extremely confusing failures at the end of the test that seem related to the command server? Differential Revision: https://phab.mercurial-scm.org/D5100

tests: add missing b prefix in test-context-metadata.t # skip-blame just a b prefix Differential Revision: https://phab.mercurial-scm.org/D5109

context: raise runtime errors with sysstrs We should probably *not* use RuntimeError for this, but let's deal with that later, rather than as part of the Python 3 effort. Differential Revision: https://phab.mercurial-scm.org/D5108

rust: rustfmt config for hg-direct-ffi For now, we're duplicating it, but it would be probably a good idea to use a single one for the whole workspace (would have implications on the other crates as well)