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

tests: add bytes prefixes to test-histedit-fold.t's local extension # skip-blame b prefixes Differential Revision: https://phab.mercurial-scm.org/D2246

histedit: fix silly bug that was unpacking a bytestr before writing it I have this foggy notion that popbuffer() might have returned a list in the past, but it doesn't anymore, and this was breaking on Python 3. As a bonus, it's probably a ton faster on Python 2 now. Differential Revision: https://phab.mercurial-scm.org/D2243

py3: whitelist another 8 passing tests Differential Revision: https://phab.mercurial-scm.org/D2242

histedit: modernize write of histedit-last-edit file Differential Revision: https://phab.mercurial-scm.org/D2241

histedit: convert bool to bytestring manually Yes, this format has 'True' and 'False' in it. I'm sorry, as it's almost certainly my fault. Differential Revision: https://phab.mercurial-scm.org/D2240

narrowcommands: more byteskwargs cleanup Differential Revision: https://phab.mercurial-scm.org/D2239

narrowmerge: iterate over a copy of dict items so we can mutate the dict Differential Revision: https://phab.mercurial-scm.org/D2238

contrib: ban $RANDOM using check-code Differential Revision: https://phab.mercurial-scm.org/D2237

tests: remove use of bashism $RANDOM to fix test-narrow.t on non-bash shells This test passed on our workstations, including on Macs, so we never noticed, but it fails on both the Linux and FreeBSD buildbots. Today I learned about a bash feature, wherein $RANDOM gives a random int every time you read it. check-code rule to follow. Differential Revision: https://phab.mercurial-scm.org/D2236

narrow: fix for getting the username when running http server Differential Revision: https://phab.mercurial-scm.org/D2231

tests: remove code to support Mercurial 4.3 Now that narrow lives in core, we don't need the legacy support. Differential Revision: https://phab.mercurial-scm.org/D2202

narrowspec: move module into core Having support for parsing the narrow specification in core is necessary for moving many other parts of narrow to core. We do still want to harmonize the narrow spec with the sparse spec. And the format needs to be documented. But this shouldn't hold up the code moving to core. Differential Revision: https://phab.mercurial-scm.org/D2201

hg: move share._getsrcrepo into core The fact we were calling this from extensions was a sign that it should live in core. We were also able to remove some extra attribute aliases from the share extension. Differential Revision: https://phab.mercurial-scm.org/D2200

tests: glob over line number Differential Revision: https://phab.mercurial-scm.org/D2199

tests: remove references to bundle2-exp config option This option was deleted a while ago. We don't even alias it in core. Differential Revision: https://phab.mercurial-scm.org/D2198

py3: whitelist another six passing tests Differential Revision: https://phab.mercurial-scm.org/D2230

narrowrepo: filter() is a generator on py3, wrap in list() Was at the top of Python 3 exceptions. Differential Revision: https://phab.mercurial-scm.org/D2229