py3: add b'' prefixes to make printrevset.py work in test-glog.t # skip-blame because we are just adding b'' prefixes Differential Revision: https://phab.mercurial-scm.org/D2257

py3: slice over bytes to prevent getting ascii values Differential Revision: https://phab.mercurial-scm.org/D2256

python3: whitelist another 5 passing tests Differential Revision: https://phab.mercurial-scm.org/D2252

py3: introduce and use pycompat.getargspec This is getfullargspec on py3, which means we can't use namedtuple named accessors for all fields (eg keywords from getargspec is varkw from getfullargspec, with the same meaning). Solves some warning issues on Python 3. I didn't clean up httpclient because that's vendored code I think we should probably discard, and I didn't touch the manpage generator for now either. Differential Revision: https://phab.mercurial-scm.org/D2251

merge: coerce nodes to bytes, not str Differential Revision: https://phab.mercurial-scm.org/D2250

py3: whitelist more passing tests I had some good success tonight with histedit tests. test-histedit-fold.t is now low-hanging fruit: it is only failing because the logic for setting environment variables in hook.py is slightly busted. Specifically, hook.py line 142 should be making sure it puts strings in the env dict, not bytes, to avoid b'' goo in environment variables. Differential Revision: https://phab.mercurial-scm.org/D2249

histedit: binascii.unhexlify (aka node.bin) throws new exception type on py3 Lucky for us, the exception type exists on 2.7, so we can include it in the except block without any extra work. Differential Revision: https://phab.mercurial-scm.org/D2244

treemanifest: add an optimized __nonzero__() We use bool(manifest) in at least some places: localrepo.py:1730 hgweb/webcommands.py:524 Since the treemanifest class doesn't define __nonzero__() (before this patch), bool(manifest) will instead call __len__(), which can be slow for treemanifests. This patch may make a noticeable difference in the localrepo case above, but that only happens when committing a merge and I haven't timed it. Note that Durham already added a __nonzero__ implementation to manifestdict in b19291e5d506 (manifest: add __nonzero__ method, 2016-11-03). Differential Revision: https://phab.mercurial-scm.org/D2232

tests: port fakemergerecord to python3 Differential Revision: https://phab.mercurial-scm.org/D2248

tests: add some b-prefixes on local script in test-histedit-arguments # skip-blame its just more b prefixes and a file in binary mode Differential Revision: https://phab.mercurial-scm.org/D2247