debugupdatecache: also warm rev branch cache We add basic code to have `debugupdatecache` ensure that the rev branch cache is fully warmed. This only affects the `debugupdatecache` command, not normal transaction operation.

debugbundle: do not display detailed part data in --quiet mode This changeset makes `hg debugbundle` respect --quiet and only display data about part headers.

tests: clean up two wayward `python` invocations These are also fallout from the check-code regex rewriting bug. Differential Revision: https://phab.mercurial-scm.org/D2865

contrib: open a hole in the open().read() ban for open().close() It turns out open().close() is both fine and something we occasionally do to verify something can be written. The few cases in the codebase were getting missed due to a regular expression bug (which I discussed in my previous change), but since I'm about to fix the bug, I need to fix the patterns. Differential Revision: https://phab.mercurial-scm.org/D2864

cleanup: fix some latent open(path).read() et al calls we previously missed This pattern was banned by check-code way back in 1b4b82063ce2 (may of 2011), but due to a regular expression rewriting bug in check-code these particular callsites were never detected. Python 3.7 caught the bug, which then exposed these errors. Differential Revision: https://phab.mercurial-scm.org/D2863

uncommit: fix unaligned indentation Differential Revision: https://phab.mercurial-scm.org/D2861

util: clear debugstacktrace call During the renaming of datestr, it seems that I have forget a debugstacktrace in util.py. Remove it. Differential Revision: https://phab.mercurial-scm.org/D2838

peer-request: include more details about batch commands A batch commands encapsulate multiple other commands. We display a bit more details about what is actually batched if peer request tracking is set.

tests: fix test-wireproto.py to work around serverrepo() not having a ui This started failing recently, but it doesn't look important as no actual ui objects have been in play. Differential Revision: https://phab.mercurial-scm.org/D2867

tests: add a cat of `error.log` in subrepo test This made some debugging a lot less painful when something was broken, and it costs us almost nothing, so I figure we may as well leave it in. Differential Revision: https://phab.mercurial-scm.org/D2853

hghave: fix hardlink-whitelisted check on Python 3 Differential Revision: https://phab.mercurial-scm.org/D2846

hghave: fix xdiff check on Python 3 Differential Revision: https://phab.mercurial-scm.org/D2845

commandserver: prefer first-party selectors module from Python 3 to backport Caught by some deprecation warnings on Python 3.7. Differential Revision: https://phab.mercurial-scm.org/D2844

forget: add --dry-run mode

push-discovery: extract the bookmark comparison logic in its own function This will help extensions to alter the behavior as they see fit.

push-discovery: don't turn use generator when comparing bookmarks We want extensions to be able to implement their own logic. Generators can be consume only once, impractical for this purpose.