py3: replace file() with open() in test-import.t file() is not present in Python 3. This patch also adds a b'' prefix to make sure we write bytes in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2123

py3: replace file() with open() in test-mactext.t file() is not present in Python 3. This patch also adds a b'' prefix to make sure we write bytes in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2122

py3: replace file() with open() in test-mq-missingfiles.t file() is not present in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2121

py3: replace file() with open() in test-mq-qimport.t file() is not present in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2120

py3: replace file() with open() in test-patch-offset.t file() is not present in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2119

py3: replace file() with open() in test-relink.t file() is not present in Python 3. This patch also adds a b'' prefix to make sure we write bytes in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2118

py3: replace file() with open() in test-subrepo-missing.t file() is not present in Python 3. This patch also adds a b'' prefix to make sure we write bytes in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2117

py3: replace file() with open() in test-tag.t file() is not present in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2116

py3: replace file() with open() in test-transplant.t file() is not present in Python 3. This patch also adds a b'' prefix to make sure we write bytes in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2115

py3: replace file() with open() in test-walk.t file() is not present in Python 3. This patch also adds a b'' prefix to make sure we write bytes in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2114

py3: replace file() with open() in test-win32text.t This patch also adds b'' prefix to make sure we write bytes on Python 3. Differential Revision: https://phab.mercurial-scm.org/D2113

py3: replace file() with open() in test-convert-p4-filetypes.t file() is not present in Python 3. While I was here, I added b'' prefix to make sure we write things correctly in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2112

py3: replace file() with open() in test-convert-mtn.t While I was here, I added b'' prefixes to make sure we write things correctly in bytes mode on Python 3. Differential Revision: https://phab.mercurial-scm.org/D2111

py3: replace file() with open() in test-clone.t While I was here, I made sure we write things correctly in bytes mode. Differential Revision: https://phab.mercurial-scm.org/D2110

merge: cut import cycle at merge -> extensions This seems less bad because checking fsmonitor looks like a temporary hack, and cmdutil -> mergemod should be a valid dependency.

subrepo: split non-core functions to new module Resolves import cycle caused by subrepo -> cmdutil. Still we have another cycle, cmdutil -> context -> subrepo, but where I think importing context is wrong. Perhaps we'll need repo.makememctx().

diff: remove fp.write() wrapper which drops label argument It's no longer needed since we've split labeled write() from file-like write().

log: pack filematcher and hunksfilter into changesetdiffer object This is just a way of getting rid of clumsy makefilematcher/makehunksfilter arguments. There might be a better abstraction, but I don't think this is bad. This makes filematcher and hunksfilter available by default, but that should be fine.

log: drop dead code to concatenate --line-range patterns and pats It's disabled since 2e45bbd3db7b, and the current implementation is unlikely to be reused.

logcmdutil: create hunksfilter and filematcher even if no diff option given It's okay since 5fe6f946f111, "log: allow matchfn to be non-null even if both --patch/--stat are off."

logcmdutil: unindent diff generator of changesetprinter Prepares for the next few patches which will make matchfn and hunksfilterfn always available.

logcmdutil: hold makefilematcher/makehunksfilter() by changesetpriner (API) This merges self.matchfn and self.show(matchfn) into self._makefilematcher, and does the same for hunksfilter. Because changesetprinter seems to have too many optional arguments, makefilematcher() and makehunksfilter() will be packed into one object by later patch.

log: pass ctx to makefilematcher() and makehunksfilter() functions This isn't important, but seems more consistent as changesetprinter.show() takes a ctx, not a revision number.

tests: allow age to go up to triple digits in test-shelve.t We started to glob the age of shelved changes in 51934fc796c0, which says that sometimes tests run slow and `hg shelve --list` says "2s" instead of "1s". However in some instances, like [1], tests run so slow that the age goes up to double digits ("13s" in that case). When that happens, `hg shelve --list` output has less white spaces after the age, so let's glob the spaces too. We probably won't ever need to handle triple digits there, but I went ahead and left only 2 required white spaces in total. [1]: https://buildd.debian.org/status/fetch.php?pkg=mercurial&arch=sparc64&ver=4.5-1&stamp=1518360804&raw=0

lfs: teach the 'lfs()' fileset to handle removed files The callstatus setting is required to notice the removal of 'lfs.test' in rev 6 in the tests, even though this isn't directly calling mctx.status(). However, it's not needed to get the results in the tests for `hg status`, so I'm probably missing something.

lfs: teach '{lfs_files}' to handle removed files

lfs: allow a pointer to be extracted from a context that removes the file This is needed to let 'set:lfs()' and '{lfs_files}' work normally on removed files. Yuya suggested returning a null pointer for removed files, instead of the pointer from the parent. The first attempt at this was to return None for a non LFS file, and a (pointer, ctx) tuple to hold the pointer and context (or parent pointer and context for a removed file). But this complicated the callers, even the ones that didn't care about removed files. Instead, let's use {} to represent a removed pointer. This has the added convenience of being a useful representation in the template language, and only affects the callers that care about removed files (and only slightly). Since pointers are explicitly serialized with a call to a member function, there is no danger of writing these to disk.

rebase: make "successors" a set in _computeobsoletenotrebased() There's no apparent reason for this variable to be a list and this avoids converting it to a set when needed.

merge with stable

rebase: do not consider extincts for divergence detection (issue5782) Extinct obsolete changesets cannot cause divergence upon rebase. We compute these obsoletes without a non-obsolete successor (extincts) in _computeobsoletenotrebased() and then filter them out from the set of obsolete revisions to rebase before getting into _checkobsrebase() to check for divergence candidates.

rebase: eliminate node from successors early in _computeobsoletenotrebased()

rebase: add a test case for issue5782 Issue 5782 reports that rebase incorrectly aborts when trying to rebase an extinct revision (an obsolete revision with only obsolete successor). We add a test to demonstrate this: the first "hg rebase" command aborts with the divergence warning while, when allowing divergence, the rebase completes and does not actually produce any divergence.