outgoing: run on filtered repo outgoing has been using an unfiltered repo since fe67107094fd (discovery: outgoing pass unfiltered repo to findcommonincoming (issue3776), 2013-01-28). If I'm reading code and history correctly, it should be safe to run _outgoing() on a filtered repo since c5456b64eb07 (discovery: run discovery on filtered repository, 2015-01-07). By running _outgoing() on a filtered repo, we can also remove the workaround there for ignoring filtered revisions.

manifest: remove check for non-contexts in _dirmancache It looks like the _dirmancache has contained only manifest contexts since d79c141fdf41 (manifest: remove usages of manifest.read, 2016-11-10).

bundle: factor the 'getchangegroup' out The call in the two branches is identical, so we can just issue it outside of the conditional.

bundle: avoid reset of the 'outgoing' variable We have a cleaner way to achieve the same effect. Not resetting the variable will help us to simplify the code.

changegroup: deprecate 'getlocalchangroup' (API) We have 'getchangegroup' with a shorter name for the exactly same feature. Now that all users are gone we can formally deprecate it.

tests: directly 'getchangegroup' It is identical to 'getlocalchangegroup' with a shorter name.

exchange: directly 'getchangegroup' It is identical to 'getlocalchangegroup' with a shorter name.

commands: directly 'getchangegroup' It is identical to 'getlocalchangegroup' with a shorter name.

changegroup: deduplicate 'getlocalchangegroup' The two functions 'getlocalchangegroup' and 'getchangegroup' have been strictly identical for multiple years ('getchangegroup' had a deprecated docstring) We'll drop one of them (getlocalchangegroup, since it has the longest name). However, we needs to migrate all users of the dropped one to the new one before we can deprecate it. In the mean time we drop one of the duplicated definition and the outdated docstring.

py3: add test to show 'hg log -Tjson' works