wireprotov2: stop sending phase updates for base revisions This feature is broken and doesn't work properly in all scenarios. e.g. if we have the following DAGs: client server D draft C draft C draft B draft B public A public A public The current code would only send the phase data for C. The client wouldn't see that B moved from draft to public. This feature will be restored in a future commit. For now, it is making refactoring of how revisions are specified in the wire protocol a bit difficult... Differential Revision: https://phab.mercurial-scm.org/D4978

debugcommands: support wrapping long lines If a line within a block is indented more than the line that came before, we automatically concatenate it with the previous line. This allows us to pretty format data. This will make tests easier to read. At some point we may just want to evaluate entire blocks as Python code or something, as even with this change, things aren't perfect, as we can't e.g. have formatting like: foo eval:[ True ] But this is strictly better than before, where we couldn't wrap long lines. Differential Revision: https://phab.mercurial-scm.org/D4977

exchangev2: honor server advertised manifestdata recommended batch size Let's plug the client up to the server-advertised recommended batch size for manifestdata requests. Differential Revision: https://phab.mercurial-scm.org/D4976

wireprotov2: advertise recommended batch size for requests Currently, exchangev2 hardcodes the batch size for how many revisions to fetch per command request. A single value is not appropriate for every repository because some repositories may have a drastically different "shape" from other repositories. e.g. a repo with lots of small files may benefit from larger batch sizes than a repo with lots of large files. And depending on caching used by the server, the server may wish to control the number of commands (to e.g. mitigate overhead of following content redirects). This commit teaches wireprotov2 commands to declare extra metadata which is advertised as part of the command descriptor. The manifestdata command has been taught to advertise a recommended batch size for requests. Differential Revision: https://phab.mercurial-scm.org/D4975

httppeer: expose API descriptor on httpv2peer The API descriptor in wireprotov2 is much more expressive than space-delimited tokens and it will be difficult to define methods to query it in all of the ways we'll want to query it. So let's just declare defeat and expose the API descriptor on the peer instance. As part of this, we define a new interface for version 2 peers, fulfilling a TODO in the process. Differential Revision: https://phab.mercurial-scm.org/D4974

tests: use baseurl instead of advertisedbaseurl The distinction matters for e.g. hosts behind load balancers. But for the test environment, it doesn't matter. For whatever reason, advertisedbaseurl is resolving to http://1.0.0.127.in-addr.arpa:$HGPORT on my MBP. This hostname fails to resolve, causing the test to fail. No clue what's up with that behavior. Differential Revision: https://phab.mercurial-scm.org/D4973

py3: another one started passing Differential Revision: https://phab.mercurial-scm.org/D4990

py3: one more passing test Differential Revision: https://phab.mercurial-scm.org/D4989

scmutil: wrap locker information in bytestr before repr()ing it Differential Revision: https://phab.mercurial-scm.org/D4988

py3: more passing tests Differential Revision: https://phab.mercurial-scm.org/D4987