debian: switch to using debhelper and dh_python2 to build debs This is a much larger commit than I'd like, but I honestly don't see a good way to break it up and leave things working. Summary: We now use debian/rules with debhelper to build our debs. This is much more standard, and means we use dh_python2 to do things like handle leaving .pyc files out of the built debs. The resulting package is split into mercurial and mercurial-common, with the former being the hg stub and all the native .sos, and the latter being basically everything else. builddeb and dockerdeb are updated to use the new system. The old way (using dpkg by hand) breaks with the above changes because debian/control no longer contains a version string (that's now guessed from the phony changelog.) Tests are updated to assert that the right files end up in the right debs.

test-debian-packages: new test for testing construction of debian packages

test-docker-packaging: test packages built using docker For now this only tests debian packages, but it could easily be extended to also test rpms.

hghave: correct test for debhelper debhelper exits with a nonzero status when you pass --help, at least on jessie.

bundle2: don't try to recover from a GeneratorExit (issue4785) GeneratorExit means the other end of the conversation has already stopped listening, so don't try and yield out error information. Instead, just let the GeneratorExit propagate normally. This should resolve esoteric issues observed with servers that have aggressive timeouts waiting for data to send to clients logging internal Python errors[0]. This has been observed with both gunicorn's gevent worker model and with scm-manager's built-in webserver (which itself is something sitting inside jetty.) 0: Exception RuntimeError: 'generator ignored GeneratorExit' in <generator object getchunks at 0x7fd2f6c586e0> ignored

revset: fix resolving strings from a list When using multiple revsets that get optimized into a list (like hg log -r r1235 -r r1237 in hgsubversion), the revset list code was assuming the strings were resolvable via repo[X]. hgsubversion and other extensions override def stringset() to allow processing different revision identifiers (such as r1235 or g<githash>), and there for the _list() implementation was circumventing that resolution. The fix is to just call stringset(). The default implementaiton does the same thing that _list was already doing (namely repo[X]). This has always been broken, but it was recently exposed by 4ee4f7415095 which made "--rev X --rev Y" produce a combined revset "X | Y".

dispatch: error out on invalid -R path even if optionalrepo (issue4805) (BC) Before this patch, repo could be set to None for wrong -R. It's okay for commands that can reject repo=None, but the command server have a problem because: - it accepts repo=None for "unbound" mode - and it reenters dispatch() where repo object is created for cwd by default Test outputs are changed because the error is detected earlier. I think new message is better than ".hg not found".

test-ssh: remove superfluous triple slashes from absolute path test Because pwd should start with "/", "/`pwd`" is enough to make absolute path.

vagrant: update to official Debian 8.1 base box Debian now rolls their own official Vagrant base boxes, so use that. At the same time, we're updating from Debian 7.4 (wheezy) to 8.1 (jessie), and switching from 32-bit to 64-bit (Debian does not provide 32-bit base boxes).

buildrpm: mkdir -p two needed directories (issue4779) Without this, building RPMs can fail.

merge with stable

hghave: use subprocess instead of os.popen os.popen was deprecated in Python 2.6 in favor of subprocess, so let's move into the future.

hgweb: move archive related attributes to requestcontext As part of this, "archive_specs" was renamed to "archivespecs" to align with naming conventions. "archive_specs" didn't technically need to be moved from hgweb. But it seemed to make sense to have all the archive code in the same class. As part of this, hgweb.configlist is no longer used, so it was deleted.

hgweb: move some config options to requestcontext Various config options from the repository were stored on the hgweb instance. While unlikely, there could be race conditions between a new request updating these values and an in-flight request seeing both old and new values, leading to weird results. We move some of options/attributes from hgweb to requestcontext. As part of this, we establish config* helpers on requestcontext. As part of the move, we changed int() casts to configint() calls. The int() usage likely predates the existence of configint(). We also removed config option updating from once every refresh to every request. I don't believe obtaining config options is expensive enough to warrant only doing when the repository has changed. The excessive use of object.__setattr__ is unfortunate. But it will eventually disappear once the proxy is no longer necessary.

hgweb: establish class for holding per request context Currently, hgweb applications have many instance variables holding mutated state. This is somewhat problematic because multiple threads may race accessing or changing this state. This patch starts a series that will add more thread safety to hgweb applications. It will do this by moving mutated state out of hgweb and into per-request instances of the newly established "requestcontext" class. Our new class currently behaves like a proxy to hgweb instances. This should change once all state is captured in it instead of hgweb. The effectiveness of this proxy is demonstrated by passing instances of it - not hgweb instances/self - to various functions.

hgweb: don't make request optional The "request" argument has been optional in this code since it was introduced in 38170eeed18c in 2009. There are no consumers that don't pass this argument. So don't make it an optional argument.

hgweb: add some documentation It took longer than I wanted to grok how the various parts of hgweb worked. So I added some class and method documentation to help whoever hacks on this next.

hgweb: limit branches shown on summary page to 10 Tags and bookmarks on summary page are already limited to 10, let's limit branches as well. Each of the blocks (tags, bookmarks, branches) currently has a link to the full list.

hgweb: use webutil.branchentries for branches on summary page This allows showing correct status for each branch, which was missing on /summary. Usually that means that closed branches get the same css class (resulting in e.g. different color/shade) as they do on /branches page. The sorting of the branches on summary page also changes and is now the same as on /branches page: closed branches are now at the end of the list.

hgweb: move branchentries code from webcommands to webutil

templater: add optional timezone argument to localdate() The keyword extension uses "utcdate" for a different function, so we can't add new "utcdate" filter or function. Instead, this patch extends "localdate" to a general timezone converter.

templater: port localdate filter to a function It will be extended to accept a timezone argument.

util: extract function that parses timezone string It will be used to parse a timezone argument passed to a template function.

templater: drop unneeded destructuring of argument tuple at buildfilter Because evalfuncarg() accepts an argument tuple, there is little meaning to pass (func, data, filt) in place of ((func, data), filt).

templater: extract helper that evaluates filter or function argument It will be used to get a date tuple from an argument. Perhaps some of "stringify(args[n][0], ...)" can be replaced by this function.

contrib: add showstack extension This allows getting a Python stack trace at any time on Unix by hitting Ctrl-\ (or Ctrl-T on BSDs). Useful for debugging mysterious hangs on the fly. Sample output: $ hg log -k nosuchmessage ^\ File "/home/mpm/hg/mercurial/revset.py", line 3089, in _iterfilter if cond(x): File "/home/mpm/hg/mercurial/util.py", line 415, in f cache[arg] = func(arg) File "/home/mpm/hg/mercurial/revset.py", line 1215, in matches for t in c.files() + [c.user(), c.description()]) File "/home/mpm/hg/mercurial/context.py", line 525, in files return self._changeset[3] File "/home/mpm/hg/mercurial/util.py", line 531, in __get__ result = self.func(obj) File "/home/mpm/hg/mercurial/context.py", line 498, in _changeset return self._repo.changelog.read(self.rev()) File "/home/mpm/hg/mercurial/changelog.py", line 338, in read text = self.revision(node) File "/home/mpm/hg/mercurial/revlog.py", line 1092, in revision bins = self._chunks(chain) File "/home/mpm/hg/mercurial/revlog.py", line 1013, in _chunks ladd(decompress(buffer(data, chunkstart - offset, chunklength))) File "/home/mpm/hg/mercurial/revlog.py", line 91, in decompress return _decompress(bin) ----

Added signature for changeset 1a45e49a6bed

Added tag 3.5.1 for changeset 1a45e49a6bed

hgweb: fix trust of templates path (BC) Long ago we disabled trust of the templates path with a comment describing the (insecure) behavior before the change. At some later refactor, the code was apparently changed back to match the comment, unaware that the intent of the comment was to describe the behavior to avoid. This change disables the trust and updates the comment to explicitly say not only what the old problem was, but also that it was in fact a problem and the action taken to prevent it. Impact: prior to this change, if you had a UNIX-based hgweb server where users can write hgrc files, those users could potentially read any file readable by the web server. This is marked as a backwards compatibility issue because people may have configured templates without proper trust settings. Issue spotted by Greg Szorc.

wix: avoid an abort with 'hg help -k foo' Previously: $ /c/Program\ Files/Mercurial/hg help -k merge-tools abort: No such file or directory: c:\Program Files\Mercurial\help\scripting.txt The Inno installer seems OK, but the TortoiseHg required the same fix. That got queued with an additional change of 'helpFolder.guid' in guids.wxi (probably by Steve). I'm not sure if that is necessary here too.

revlog: add an aggressivemergedelta option This adds an option for delta'ing against both p1 and p2 when applying merge revisions and picking whichever is smallest. Some before and after stats on manifest.d size: internal large repo: before: 1.2 GB after: 930 MB mozilla-central: before: 261 MB after: 92 MB

revlog: change generaldelta delta parent heuristic The old generaldelta heuristic was "if p1 (or p2) was closer than the last full text, use it, otherwise use prev". This was problematic when a repo contained multiple branches that were very different. If commits to branch A were pushed, and the last full text was branch B, it would generate a fulltext. Then if branch B was pushed, it would generate another fulltext. The problem is that the last fulltext (and delta'ing against `prev` in general) has no correlation with the contents of the incoming revision, and therefore will always have degenerate cases. According to the blame, that algorithm was chosen to minimize the chain length. Since there is already code that protects against that (the delta-vs-fulltext code), and since it has been improved since the original generaldelta algorithm went in (2011), I believe the chain length criteria will still be preserved. The new algorithm always diffs against p1 (or p2 if it's closer), unless the resulting delta will fail the delta-vs-fulltext check, in which case we delta against prev. Some before and after stats on manifest.d size. internal large repo old heuristic - 2.0 GB new heuristic - 1.2 GB mozilla-central old heuristic - 242 MB new heuristic - 261 MB The regression in mozilla central is due to the new heuristic choosing p2r as the delta when it's closer to the tip. Switching the algorithm to always prefer p1r brings the size back down (242 MB). This is result of the way in which mozilla does merges and pushes, and the result could easily swing the other direction in other repos (depending on if they merge X into Y or Y into X), but will never be as degenerate as before. I future patch will address the regression by introducing an optional, even more aggressive delta heuristic which will knock the mozilla manifest size down dramatically.

revlog: move textlen calculation to be above delta chooser This moves the textlen calculation to be above the delta chooser. Since textlen is needed for calling isgooddelta, we need it above the delta chooser so future patches can call isgooddelta.

revlog: move delta check to it's own function This moves the delta vs fulltext comparison to its own function. This will allow us to reuse the function in future patches for more efficient delta choices. As a side effect, this will also allow extensions to modify our delta criteria.

monoblue: add archive links on summary page

help: distinguish sections when multiple match (issue4802)

merge with stable

hghave: add a check for docker support This currently refuses to operate if on a non-Linux host. I suspect that Docker running on FreeBSD 11 or on an Illumos derivative would work fine, but I don't have ready access to such a system. On OS X using boot2docker (I used a hacky xhyve-based one for testing), it won't work because $TESTTEMP doesn't end up inside the set of directories that get forwarded to the boot2docker VM, so you can't actually drop debs in the $TESTTEMP at all. It would be possible (probably even trivial) to hack around this by using a randomly-named temporary directory inside the working directory, but that seems unlikely to be useful enough to justify the ugliness.

hghave: add a check for debian packaging tools

run-tests: add support for marking tests as very slow I want to add tests for our packaging rules, but those necessarily run a whole build, or possibly two if both native packaging and docker are available. This lets us flag such tests with a `#require slow` so that they don't unnecessarily slow down normal test runs.

builddeb: rework how output dir and platform are specified This makes it possible to write tests for both builddeb and dockerdeb that actually build .debs and then sanity check the contents.

parsers: fix two cases of unsigned long instead of Py_ssize_t We had to do this before because Python 2.4 didn't understand the n format specifier in Py_BuildValue and friends. We no longer have that problem.

templatefilters: remove redundant 'date' and 'strip' filters These filters are defined as 'date()' and 'strip()' functions. Help messages are moved to the corresponding functions.

templater: introduce unified filter syntax for unary functions "filter(expr)" is allowed already. This patch adds the opposite, "expr|func".

templater: inline getfilter() to buildfilter() This prepares for the unified filter syntax that will be introduced by the next patch.

clone: fix updaterev to update to latest branch changeset (issue4528) Before this patch if clone --updaterev points to branch which head on src repo wasnt in dest repo, clone updated dest repo to default branch. After applying this patch, if changeset from src repo pointing at given branch is not in dest repo, it searches for changeset pointing for given branch locally in dest repo. Lookup in destination repo: 559: uprev = destrepo.lookup(update) is wrapped by try/except block to preserve current behaviour when given revset to -u is not found - it will not fail,but silently update dest repo to head of default branch.

revsets: makes follow() supports file patterns (issue4757) (BC) Before this patch, follow only supports full, exact filenames. This patch makes follow argument to be treated like file pattern same way like log treats their arguments. It preserves current behaviour of follow() matching paths relative to the repository root by default.

i18n-ja: synchronized with b930d4ef7739

histedit: improve discoverability of edit commit message

revset: cache smartset's min/max As the content of a smartset never changes, min and max will never change either. This will save us time when this function is called multiple times. This is relevant for issue4782 but does not fix it.

spelling: behaviour -> behavior

glossary: fixup use of periods at end of entries * Include trailing period for entries * Move trailing period inside quotations for example sentences

histedit: fix grammar for help for safety aborts

revset: mark reachablerootspure as private

reachableroots: construct and sort baseset in revset module This can remove the dependency from changelog to revset, which seems a bit awkward for me.

reachableroots: use smartset min smartset min are likely to be optimised, cached or other magical property.

graphmod: stop building a list out of branchgroupiter Not only does this defeat the purpose of having `branchgroupiter` an iterable, but this also makes revs something else than a smartset preventing to use revs.min() in the call to reachablerevs.

reachableroots: sort the smartset in the pure version too Changeset be8a4e0800d8 uses smartset lazy sorting for the C version. We need to apply the same to the pure version for consistency. This is fixing the tests with --pure.

builddeb: actually run make when building the deb (issue4778) As of this change, we no longer produce broken debs, but I've already got followups written that will produce much more standard-looking packages and test the resulting packages.

docker-debian-jessie: fix errant mkdir

makefile: rename debian-jessie to deb `make debian-jessie` was a poor name choice on my part, because it really builds a package for the current debian platform, whatever that happens to be, rather than a specific platform. Rename it to just `make deb` so that it's a little clearer. As a result, it now places built debs in a "debian-unknown" directory.

run-tests: ignore failed removal of nonexistent installerrs When running tests with -j100 or so on a large machine, I see this os.remove call failing semi-regularly. Since it's not really a problem when the file is already gone, just suppress the error in that case.

templater: move verbosity-to-template matcher to constructor We're going to reuse this and it's silly for it to be done per-cset anyway.

templater: remove pseudo-ternary