py3: don't use dict.iterkeys() in hgext/fastannotate/context.py dict.iterkeys() is not present on Python 3. Differential Revision: https://phab.mercurial-scm.org/D4431

run-tests: replace '/dev/null' with os.devnull for Windows Many of the *.py tests were dying on: File "c:\Users\Matt\projects\hg\hgdemandimport\tracing.py", line 27, in log _pipe = open(os.environ['HGCATAPULTSERVERPIPE'], 'w', 1) IOError: [Errno 2] $ENOENT$: '/dev/null'

stringutil: teach pprint() to indent This will make data structure dumping in various places a bit easier to read and diff. Since I wanted this for `hg debugwireproto` output, I added indentation to it. A more advanced pretty printer implementation would conditionally add newlines if output is too long. But it is vastly simpler to be consistent and always add newlines when indenting. Again, I'm not crazy about the verbosity of the code and there is room to consolidate logic for "print a collection." But this isn't the most complicated code in the world and I'm not convinced it is worth doing. Differential Revision: https://phab.mercurial-scm.org/D4399

zsh_completion: complete merge tools for -t/--tool Differential Revision: https://phab.mercurial-scm.org/D4362

shelve: add an "internal" extra Keeping shelve changeset around increase the risk of collision with normal changesets. To prevent such collision and help with overall clarity, we add an 'internal' key in extra that mark the changeset as created by "shelve". Node changes in tests are expected.

shelve: write metadata file on the fly if they are missing Keeping an explicit reference to the shelve node in order to reuse it directly if the unshelved is repeated (eg: unshelve --keep).