util: add a stream compression API to compression engines It is a common pattern throughout the code to perform compression on an iterator of chunks, yielding an iterator of compressed chunks. Let's formalize that as part of the compression engine API. The zlib and bzip2 implementations allow an optional "level" option to control the compression level. The default values are the same as what the Python modules use. This option will be used in subsequent patches.

util: remove decompressors dict (API) All in-tree consumers are now using the compengines registrar. Extensions should switch to it as well.

changegroup: use compression engines API The new API doesn't have the equivalence for None and 'UN' so we introduce code to use 'UN' explicitly.

bundle2: use compression engines API to obtain decompressor Like the recent change for the compressor side, this too is relatively straightforward. We now store a compression engine on the instance instead of a low-level decompressor. Again, this will allow us to easily transition to different compression engine APIs when they are implemented.

util: remove compressors dict (API) We no longer have any in-tree consumers of this object. Use util.compengines instead.

bundle2: use new compression engine API for compression Now that we have a new API to define compression engines, let's put it to use! The new code stores a reference to the compression engine instead of a low-level compressor object. This will allow us to more easily transition to different APIs on the compression engine interface once we implement them. As part of this, we change the registration in bundletypes to use 'UN' instead of None. Previously, util.compressors had the no-op compressor registered under both the 'UN' and None keys. Since we're switching to a new API, I don't see the point in carrying this dual registration forward.

util: create new abstraction for compression engines Currently, util.py has "compressors" and "decompressors" dicts mapping compression algorithms to callables returning objects that perform well-defined operations. In addition, revlog.py has code for calling into a compressor or decompressor explicitly. And, there is code in the wire protocol for performing zlib compression. The 3rd party lz4revlog extension has demonstrated the utility of supporting alternative compression formats for revlog storage. But it stops short of supporting lz4 for bundles and the wire protocol. There are also plans to support zstd as a general compression replacement. So, there appears to be a market for a unified API for registering compression engines. This commit starts the process of establishing one. This commit establishes a base class/interface for defining compression engines and how they will be used. A collection class to hold references to registered compression engines has also been introduced. The built-in zlib, bz2, truncated bz2, and no-op compression engines are registered with a singleton instance of the collection class. The compression engine API will change once consumers are ported to the new API and some common patterns can be simplified at the engine API level. So don't get too attached to the API...

config: mark parser regexes as bytes explicitly r-strings are not transformed into bytes by our source transformer magic.

ui: explicitly open config files in binary mode This has been working mostly accidentally, but now it works explicitly.

help: fix double word usage "most" was used twice. (I fixed a grammar error before timeless spotted it!)

setup: move cffi stuff to mercurial/cffi This patch moves all setup*cffi stuff to mercurial/cffi to make the root directory cleaner. The idea was from mpm [1]: > It seems like we could have a fair amount of cffi definitions, and > cluttering the root directory (or mercurial/) with them is probably not > a great long-term solution. We could probably add a cffi/ directory > under mercurial/ to parallel pure/. [1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2016-July/086442.html

manifest: remove manifest.add and add memmfctx.write This removes one more dependency on the manifest class by moving the write functionality onto the memmanifestctx classes and changing the one consumer to use the new API. By moving the write path to a manifestctx, we now give the individual manifests control over how they're read and serialized. This will be useful in developing new manifest formats and storage systems.

context: add manifestctx property on changectx This allows us to access the manifestctx for a given commit. This will be used in a later patch to be able to copy the manifestctx when we want to make a new commit.

manifest: add copy to mfctx classes This adds copy functionality to the manifestctx classes. This will be used in an upcoming diff to copy a manifestctx during commit so we can modify the manifest before committing.

manifest: introduce memmanifestctx and memtreemanifestctx This introduces two new classes to represent in-memory manifest instances. Similar to memchangectx, this lets us prepare a manifest in memory, then in a future patch we will add the apis that can commit this in memory structure.

manifestctx: add _revlog() function The `self._repo.manifestlog._revlog` code is getting copy and pasted a lot in manifestctx. Let's make it a function so it can be reused. This will make future patches cleaner too.

manifest: remove manifest.find As part of removing dependencies on manifest, this drops the find function and fixes up the two existing callers to use the equivalent apis on manifestctx.

changegroup: remove remaining uses of repo.manifest The remaining uses of repo.manifest in the changegroup module are treating the manifest exclusively as a revlog, so let's replace them with instances of the revlog directly. This is part of dropping all dependencies on repo.manifest in favor of repo.manifestlog.

treemanifest: fix a "treeinmem" case f2c5b9d48b29 (manifest: make treemanifestctx store the repo, 2016-10-18) broke most tests when run with treeinmem=True. The treeinmem mode can not be enabled by the user, so this did not break anything in practice, but it's useful to have it working for testing the treemanifest code.

perf: support measuring bdiff for all changeset related data The --all argument changes the behavior of `perfbdiff` to pull in fulltext revision pairs for all changes related to a changeset. The p1 and p2 manifests will be bdiffed against current. Every file that changed between p1 and current will have its file revisions loaded and bdiffed. This mode of operation effectively measured the bdiff time required for `hg commit`.

perf: support bdiffing multiple revisions in a single revlog This is useful for testing bdiff performance on several revision pairs at a time.

perf: prepare to handle multiple pairs in perfbdiff Before, we only supported benchmarking a single pair of texts with bdiff. We want to enable feeding larger corpora into this benchmark. So rewrite the code to support that.

py3: document why os.fsencode() can be used to get back bytes argv And a possible Windows issue. I'm sad we have to do such ugly hack, but that's the unicode on Python 3.

py3: update test-check-py3-compat.t output 4b1af1c867fa (scmutil: move util.termwidth()) changed where the import fails.

spelling: fixes of non-dictionary words

manifest: add __nonzero__ method This adds a __nonzero__ method to manifestdict. This isn't strictly necessary in the vanilla Mercurial implementation, since Python will handle nonzero checks by using __len__, but having it implemented here makes it easier for alternative implementations to implement __nonzero__ and have them be plug-n-play with the normal implementation.

py3: have bytes version of sys.argv sys.argv returns unicodes on Python 3. We need a bytes version for us. There was also a python bug/feature request which wanted then to implement one. They rejected and it is quoted in one of the comments that we can use fsencode() to get a bytes version of sys.argv. Though not sure about its correctness. Link to the comment: http://bugs.python.org/issue8776#msg217416 After this patch we will have pycompat.sysargv which will return us bytes version of sys.argv. If this patch goes in, i will like to make transformer rewrite sys.argv with pycompat.argv because there are lot of occurences.

util: use '\\' rather than using r'\' We need bytes, and I find this just a little more immediately obvious than doing rb'\'.

util: use pycompat urlunquote function

pycompat: introduce an alias for urllib.unquote We have to use unquote_to_bytes on Python 3, so we need an abstraction for this.

keyword: handle filectx _customcmp Suggested by Yuya Nishihara: https://www.mercurial-scm.org/pipermail/mercurial-devel/2016-October/089461.html Related to issue5364.

mail: do not print(), use ui.debug() instead Since print() can't take a bytes output, it's pretty useless in Mercurial on Python 3. As this is a debug message, switching to ui.debug() seems fine.

progress: obtain stderr from ui This will help Python 3 porting.

simplemerge: obtain stdout from ui This will help Python 3 porting.

profiling: obtain stderr from ui This will help Python 3 porting.

scmutil: ignore EPERM at os.utime, which avoids ambiguity at closing According to POSIX specification, just having group write access to a file causes EPERM at invocation of os.utime() with an explicit time information (e.g. working on the repository shared by group access permission). To ignore EPERM at closing file object in such case, this patch makes checkambigatclosing._checkambig() use filestat.avoidambig() introduced by previous patch. Some functions below imply this code path at truncation of an existing (= might be owned by another user) file. - strip() in repair.py, introduced by e38d85be978f - _playback() in transaction.py, introduced by 599912a62ff6 This is a variant of issue5418.

vfs: ignore EPERM at os.utime, which avoids ambiguity at renaming (issue5418) According to POSIX specification, just having group write access to a file causes EPERM at invocation of os.utime() with an explicit time information (e.g. working on the repository shared by group access permission). To ignore EPERM at renaming in such case, this patch makes vfs.rename() use filestat.avoidambig() introduced by previous patch.

util: add utility function to skip avoiding file stat ambiguity if EPERM Now, advancing stat.st_mtime by os.utime() is used to avoid file stat ambiguity. But according to POSIX specification, utime(2) with an explicit time information is permitted only for a process with: - the effective user ID equal to the user ID of the file, or - appropriate privileges http://pubs.opengroup.org/onlinepubs/9699919799/functions/utime.html Therefore, just having group write access to a file causes EPERM at applying os.utime() on it (e.g. working on the repository shared by group access permission). This patch adds class filestat utility function avoidamgig() to avoid file stat ambiguity but skip it if EPERM. It is reasonable to always ignore EPERM, because utime(2) causes EPERM only in the case described above (EACCES is used only for utime(2) with NULL).

bdiff: replace hash algorithm This patch replaces lyhash with the hash algorithm used by diffutils. The algorithm has its origins in Git commit 2e9d1410, which is all the way back from 1992. The license header in the code at that revision in GPL v2. I have not performed an extensive analysis of the distribution (and therefore buckets) of hash output. However, `hg perfbdiff` gives some clear wins. I'd like to think that if it is good enough for diffutils it is good enough for us? From the mozilla-unified repository: $ perfbdiff -m 3041e4d59df2 ! wall 0.053271 comb 0.060000 user 0.060000 sys 0.000000 (best of 100) ! wall 0.035827 comb 0.040000 user 0.040000 sys 0.000000 (best of 100) $ perfbdiff 0e9928989e9c --alldata --count 100 ! wall 6.204277 comb 6.200000 user 6.200000 sys 0.000000 (best of 3) ! wall 4.309710 comb 4.300000 user 4.300000 sys 0.000000 (best of 3) From the hg repo: $ perfbdiff 35000 --alldata --count 1000 ! wall 0.660358 comb 0.660000 user 0.660000 sys 0.000000 (best of 15) ! wall 0.534092 comb 0.530000 user 0.530000 sys 0.000000 (best of 19) Looking at the generated assembly and statistical profiler output from the kernel level, I believe there is room to make this function even faster. Namely, we're still consuming data character by character instead of at the word level. This translates to more loop iterations and more instructions. At this juncture though, the real performance killer is that we're hashing every line. We should get a significant speedup if we change the algorithm to find the longest prefix, longest suffix, treat those as single "lines" and then only do the line splitting and hashing on the parts that are different. That will require a lot of C code, however. I'm optimistic this approach could result in a ~2x speedup.

profiling: make statprof the default profiler (BC) The statprof sampling profiler runs with significantly less overhead. Its data is therefore more useful. Furthermore, its default output shows the hotpath by default, which I've found to be way more useful than the default profiler's function time table. There is one behavioral regression with this change worth noting: the statprof profiler currently doesn't profile individual hgweb requests like lsprof does. This is because the current implementation of statprof only profiles the thread that started profiling. The ability for lsprof to profile individual hgweb requests is relatively new and likely not widely used. Furthermore, I have plans to modify statprof to support profiling multiple threads. I expect that change to go through several iterations. I'm submitting this patch first so there is more time to test statprof. Perfect is the enemy of good.

profiling: use vendored statprof and upstream enhancements (BC) Now that the statprof module is vendored and suitable for use, we switch our statprof profiler to use it. This required some minor changes because of drift between the official statprof profiler and the vendored copy. We also incorporate Facebook's improvements from the "statprofext" extension at https://bitbucket.org/facebook/hg-experimental, notably support for different display formats. Because statprof output is different, this is marked as BC. Although most users likely won't notice since most users don't profile.

crecord: use scmutil.termsize()

scmutil: extend termwidth() to return terminal height, renamed to termsize() It appears crecord.py has its own termsize() function. I want to get rid of it. The fallback height is chosen from the default of cmd.exe on Windows, and VT100 on Unix.

scmutil: clarify that we explicitly do termwidth - 1 on Windows I was a bit confused since we didn't add 1 to the width, which is different from the example shown in StackOverflow. http://stackoverflow.com/a/12642749

scmutil: remove superfluous indent from termwidth()

scmutil: narrow ImportError handling in termwidth() The array module must exist. It's sufficient to suppress the ImportError of termios. Also salvaged the comment why we have to handle AttributeError, from 7002bb17cc5e.

scmutil: make termwidth() obtain stdio from ui I'm getting rid of direct sys.stderr|out|in references so Py3 porting will be slightly easier.

scmutil: move util.termwidth() I'm going to get rid of sys.stderr|out|in references from posix.termwidth(). In order to do that, termwidth() needs to take a ui, but functions in util.py shouldn't depend on a ui object. So moves termwidth() to scmutil.py.

bdiff: don't check border condition in loop `plast = a + len - 1`. So, this "for" loop iterates from "a" to "plast", inclusive. So, `p == plast` can only be true on the final iteration of the loop. So checking for it on every loop iteration is wasteful. This patch simply decreases the upper bound of the loop by 1 and adds an explicit check after iteration for the `p == plast` case. We can't simply add 1 to the initial value for "i" because that doesn't do the correct thing on empty input strings. `perfbdiff -m 3041e4d59df2` on the Firefox repo becomes significantly faster: ! wall 0.072763 comb 0.070000 user 0.070000 sys 0.000000 (best of 100) ! wall 0.053221 comb 0.060000 user 0.060000 sys 0.000000 (best of 100) For the curious, this code has its origins in 8b067bde6679, which is the changeset that introduced bdiff.c in 2005. Also, GNU diffutils is able to perform a similar line-based diff in under 20ms. So there's likely more perf wins to be found in this code. One of them is the hashing algorithm. But it looks like mpm spent some time testing hash collisions in d0c48891dd4a. I'd like to do the same before switching away from lyhash, just to be on the safe side.

perf: add perfbdiff bdiff shows up a lot in profiling. I think it would be useful to have a perf command that runs bdiff over and over so we can find hot spots.

help: show help for disabled extensions (issue5228) This patch does not exactly solve issue5228 but it results in a better condition on this issue. For disabled extensions, we used to parse the module and get the first occurrences of docstring and then return the first line of that as an introductory heading of extension. This is what we get today. This patch returns the whole docstring of the module as a help for extension, which is more informative. There are some modules which don't have much docstring at top level except the heading so those are unaffected by this change. To follow the existing trend of showing commands either we have to load the extension or have a very ugly parsing method which don't even assure correctness.

py3: make scmutil.rcpath() return bytes This patch make sure scmutil.rcpath() returns bytes independent of which platform is used on Python 3. If we want to change type for windows we can just conditionalize the return variable.

py3: use pycompat.ossep at certain places Certain instances of os.sep has been converted to pycompat.ossep where it was sure to use bytes only. There are more such instances which needs some more attention and will get surely.

py3: have pycompat.ospathsep and pycompat.ossep We needed bytes version of os.sep and os.pathsep in py3 as they return unicodes.

py3: add a bytes version of os.name os.name returns unicodes on py3. Most of our checks are like os.name == 'nt' Because of the transformer, on the right hand side we have b'nt'. The condition will never satisfy even if os.name returns 'nt' as that will be an unicode. We either need to encode every occurence of os.name or have a new variable which is much cleaner. Now we have pycompat.osname. There are around 53 occurences of os.name in the codebase which needs to be replaced by pycompat.osname to support Python 3.

py3: make util.datapath a bytes variable In this patch we make util.datapath a bytes variable, but we have to pass a unicode to gettext.translation otherwise it will cry. Used pycompat.fsdecode() to decode it back to unicode as it was converted to bytes using pycompat.fsencode().

py3: add os.fsdecode() as pycompat.fsdecode() We need to use os.fsdecode() but this was not present in Python 2. So added the function in pycompat.py

statprof: return state from stop() I don't like global variables. Have stop() return the captured state so callers can pass data to the display function.

hgweb: cache fctx.parents() in annotate command (issue5414) 9c37df347485 introduced a call to fctx.parents() for each line in annotate output. This function call isn't cheap, as it requires linkrev adjustment. Since multiple lines in annotate output tend to belong to the same file revision, a cache of fctx.parents() lookups for each input should be effective in the common case. So we implement one. Since the cache has to precompute parents so an aborted generator doesn't leave an incomplete cache, we could just return a list. However, we preserve the generator for backwards compatibility. The effect of this change when requesting /annotate/96ca0ecdcfa/ browser/locales/en-US/chrome/browser/downloads/downloads.dtd on the mozilla-aurora repo is significant: p1(9c37df347485) 5.5s 9c37df347485: 66.3s this patch: 10.8s We're still slower than before. But only by ~2x instead of ~12x. On the tip revisions of layout/base/nsCSSFrameConstructor.cpp file in the mozilla-unified repo, time went from 12.5s to 14.5s and back to 12.5s. I'm not sure why the mozilla-aurora repo is so slow. Looking at the code of basefilectx.parents(), there is room for further improvements. Notably, we still perform redundant calls to filelog.renamed() and basefilectx._parentfilectx(). And basefilectx.annotate() also makes similar calls, so there is potential for object reuse. However, introducing caches here are not appropriate for the stable branch.

hghave: check darcs version more strictly test-convert-darcs.t suddenly started failing on my Debian sid machine. The reason was Darcs was upgraded from 2.12.0 to 2.12.4 so the original pattern got to match the last two digits. Fix the pattern to match 2.2+.

tests: silence output of darcs command It appears darcs is more verbose by default these days. I got test failure with Darcs 2.12.4.

manifest: remove manifest.readshallowdelta This removes manifest.readshallowdelta and converts its one consumer to use manifestlog instead.

manifest: get rid of manifest.readshallowfast This removes manifest.readshallowfast and converts it's one user to use manifestlog instead.

manifest: add shallow option to treemanifestctx.readdelta and readfast The old manifest had different functions for performing shallow reads, shallow readdeltas, and shallow readfasts. Since a lot of the code is duplicate (and since those functions don't make sense on a normal manifestctx), let's unify them into flags on the existing readdelta and readfast functions. A future diff will change consumers of these functions to use the manifestctx versions and will delete the old apis.

manifest: change manifestlog mancache to be directory based In the last patch we added a get() function that allows fetching directory level treemanifestctxs. It didn't handle caching at directory level though, so we need to change our mancache to support multiple directories.

manifest: add manifestlog.get to obtain subdirectory instances Previously manifestlog only allowed obtaining root level manifests. Future patches will need direct access to subdirectory manifests as part of changegroup creation, so let's add a get() function that knows how to deal with subdirectories.

manifest: throw LookupError if node not in revlog When accessing a manifest via manifestlog[node], let's verify that the node actually exists and throw a LookupError if it doesn't. This matches the old read behavior, so we don't accidentally return invalid manifestctxs. We do this in manifestlog instead of in the manifestctx/treemanifestctx constructors because the treemanifest code currently relies on the fact that certain code paths can produce treemanifests without touching the revlogs (and it has tests that verify things work if certain revlogs are missing entirely, so they break if we add validation that tries to read them).

revlog: optimize _chunkraw when startrev==endrev In many cases, _chunkraw() is called with startrev==endrev. When this is true, we can avoid an extra index lookup and some other minor operations. On the mozilla-unified repo, `hg perfrevlogchunks -c` says this has the following impact: ! read w/ reused fd ! wall 0.371846 comb 0.370000 user 0.350000 sys 0.020000 (best of 27) ! wall 0.337930 comb 0.330000 user 0.300000 sys 0.030000 (best of 30) ! read batch w/ reused fd ! wall 0.014952 comb 0.020000 user 0.000000 sys 0.020000 (best of 197) ! wall 0.014866 comb 0.010000 user 0.000000 sys 0.010000 (best of 196) So, we've gone from ~25x slower than batch to ~22.5x slower. At this point, there's probably not much else we can do except implement an optimized function in the index itself, including in C.

revlog: inline start() and end() for perf reasons When I implemented `hg perfrevlogchunks`, one of the things that stood out was N * _chunk() calls was ~38x slower than 1 _chunks() call. Specifically, on the mozilla-unified repo: N*_chunk: 0.528997s 1*_chunks: 0.013735s This repo has 352,097 changesets. So the average time per changeset comes out to: N*_chunk: 1.502us 1*_chunks: 0.039us If you extrapolate these numbers to a repository with 1M changesets, that comes out to 1.502s versus 0.039s, which is significant. At these latencies, Python attribute lookups and function calls matter. So, this patch inlines some code to cut down on that overhead. The impact of this patch on N*_chunk() calls is clear: ! wall 0.528997 comb 0.520000 user 0.500000 sys 0.020000 (best of 19) ! wall 0.367723 comb 0.370000 user 0.350000 sys 0.020000 (best of 27) So, we go from ~38x slower to ~27x. A nice improvement. But there's still a long way to go. It's worth noting that functionality like revsets perform changelog lookups one revision at a time. So this code path is worth optimizing.

revlog: reorder index accessors to match data structure order Index entries are ordered tuples. We have accessors in the revlog class to map tuple offsets to names. To help reinforce the order, reorder the methods so they match the order of elements in the tuple. While I'm here, also sneak in some minimal documentation.

color: add the ability to display configured style to 'debugcolor' The 'hg debugcolor' command gains a '--style' flag to display all the configured labels and their styles. This have many benefits: * discovering documented label, * checking consistency between label's style, * showing the actual style of a label.

color: sort output of 'debugcolor' The previous ordering were provided by the set. The new output is more stable and rational. In addition we have some logic to keep the '_background' version together to help readability.

color: extract color and effect display from 'debugcolor' We are about to introduce a second mode for 'hg debugcolor' that would list the known label and their configuration, so we split the code related to color and effect out of the main function.

color: restore _style global after debugcolor ran Before this change, running 'debugcolor' would destroy all color style for the rest of the process life. We now properly backup and restore the variable content. Using a global variable is sketchy in general and could probably be removed. However, this is a quest for another adventure.

color: add basic documentation to 'debugcolor' This does not hurt.

tests: merge 'test-push-hook-lock.t' into 'test-push.t' That test file is very small and is merge with the new 'test-push.t'. No logic is changed. We don't register this as a copy because is actually a "ypoc" merging two file together without replacing the destination and Mercurial cannot express that.

tests: merge 'test-push-validation.t' into 'test-push.t' That test file is very small and is merge with the new 'test-push.t'. No logic is changed but repository name are update to avoid collision. We don't register this as a copy because is actually a "ypoc" merging two file together without replacing the destination and Mercurial cannot express that.

test: rename 'test-push-r.t' to 'test-push.t' We do not have a simple test for 'hg push' but we have multiple tiny tests for various aspect of it. We'll unify them into a single file, and we start with 'test-push-r.t'. The code is unchanged but we renamed the repository used to avoid collision with other tests we'll import in coming changesets. Test timing for the record: start end cuser csys real Test 1.850 2.640 0.650 0.090 0.790 test-push-validation.t 2.640 3.520 0.760 0.090 0.880 test-push-hook-lock.t 0.000 1.850 1.560 0.210 1.850 test-push-r.t

tests: simplify command script in 'test-push-r.t' I came across this code by chance. The script of this test is a bit messy with a lot of unnecessary intermediate commands. We simplify the script and unify repository access through '-R'. In the process the update after the unbundle is dropped as it does not add anything to the tests.

py3: use encoding.environ in ui.py Using source transformer we add b'' everywhere. So there are no chances that those bytes string will work with os.environ on Py3 as that returns a dict of unicodes. We are relying on the errors, even though no error is raised even in future, these pieces of codes will tend to do wrong things. if statements can result in wrong boolean and certain errors can be raised while using this piece of code. Let's not wait for them to happen, fix what is wrong. If this patch goes in, I will try to do it for all the cases. Leaving it as it is buggy.

py3: make scmposix.userrcpath() return bytes We are making sure that we deal with bytes as much we can. This is a part of fixing functions so that they return bytes if they have to. Used encoding.environ to return bytes. After this patch, scmposix.userrcpath() returns bytes and scmutil.osrcpath() will also return bytes if the platform is posix. Functions is scmposix returns bytes on Python 3 now.

adjustlinkrev: remove unnecessary parameters Since adjustlinkrev has "self", and is a method of a filectx object, it does not need path, filelog, filenode. They can be fetched from the "self" easily.

repair: make strip() return backup file path narrowhg wants to strip some commits and then re-apply them after applying another bundle. Having repair.strip() return the bundle path will be helpful for it.

rebase: check for conflicts before continuing When there are unresolved merge conflicts, there is no reason to make the user wait for rebase to process all of the already rebased commits just to complain that it cannot do anything. Abort early.

cmdutil: refactor checkunresolved localrepo.commit had code to check for unresolved merge conflicts, it would be helpful for at least rebase to be able to use that code without calling commit().

rebase: rename merge to mergemod

context: make sure __str__ works, also when there is no _changectx Before, it could crash when trying to print the wrong kind of object at the wrong time.

largefiles: clarify variable name holding file mode A follow-up to c01acee367ec. 'st' sounds like the whole stat result while 'mode' is a better name for the actual file mode.

changegroup: use changelogrevision() Using offsets for accessing changelog entries isn't very readable. As a bonus, changelog.changelogrevision() also accepts a revision, so we don't need to perform the inline node resolution either.

changegroup: cache changelog and manifestlog outside of loop History has taught us that repo.changelog can add significant overhead to loops. So cache the changelog instance outside of the loop to avoid the lookup. While we're here, do the same for manifestlog, since each loop would otherwise initialize a new manifestlog instance.

make: targets for building packages for ubuntu yakkety Ubuntu 16.10 Yakkety Yak is out. Let's support it.

util: put compression code next to each other ctxmanager was injecting itself between the compression and decompression code. Let's restore some order.

hgweb: make log streams compatible with command server Even though it would be useless to start a web server by a command server, it should be doable in principle. Also, we can't use sys.stdout/err directly on Python 3 because they are unicode streams.

cmdserver: write channel header and payload by a single write() call This makes a channeledoutput thread-safe as long as the underlying fwrite() is thread-safe. Both POSIX and Windows implementations are documented as MT-safe. MT-safety is necessary to use ui.fout and ui.ferr in hgweb.

histedit: use ui.fin to read commands from stdin stdin is wrapped by channeledinput in command-server session.

convert: have debugsvnlog obtain standard streams from ui This will help porting to Python 3, where sys.stdin/out/err are unfortunately unicode streams so we can't use them directly.

convert: remove superfluous setbinary() calls from debugsvnlog a3fe91b4f6eb made standard streams set to binary mode globally.

tests: explicitly use ls profiler In preparation for making the statprof profiler the default.

statprof: pass data structure to display functions Currently, statprof maintains a global "state" variable that is used by several functions. Global variables hinder adaptability of code. So pass state to display functions so we can make changes to how "state" works in future patches.

statprof: use print function

statprof: use absolute_imports As part of this, we modify import order to satisfy our import checker.

statprof: require paths to save or load profile data Upstream appears to aggressively save statprof data in a well-defined home directory path. Change the code to not do that. We also change file saving to fail if an error has occurred instead of silently failing. Callers can catch the exception. This behavior is more suitable for a generic "library" module.

statprof: fix flake8 warnings My local flake8 hook informed me of these warnings in the upstream code. Fix them.

statprof: vendor statprof.py Vendored from https://bitbucket.org/facebook/hg-experimental changeset 73f9db47ae5a1a9fa29a98dfe92d557ad51234c3 without modification. This introduces a number of code style violations. The file already has the magic words to skip test-check-code.t. I'll make additional changes to clean up the test-check-py3-compat.t warnings and to change some behavior in the code that isn't suitable for general use. test-check-commit.t also complains about numerous things. But there's nothing we can do if we're importing as-is.

merge with stable

Added signature for changeset eab274469952

Added tag 4.0 for changeset eab274469952

merge with i18n

i18n-ja: synchronized with 69ffbbe73dd0

tag: clarify warning about making a tag on a branch head Currently the warning is ambiguous about whether the new tag (possibly specified via --rev) is being added on a branch head or whether the working directory is based on a branch head. Clarify the error message to eliminate this ambiguity.

contrib: check reference to old selenic.com domain Now, all URL in Mercurial source tree should refer mercurial-scm.org domain instead of selenic.com. *.po files are ignored in this patch, because they might contain msgid/msgstr coming from old source files. This ignorance seems safe enough, because such msgstr should be ignored at runtime, because: - msgid corresponded to it should be invalid, or - msgstr itself should be marked as fuzzy at synchronized to recent hg.pot If any additional examination for *.po files is needed in the future, let i18n/check-translation.py achieve such examination. BTW, some binary files (e.g. *.png) are meaningless for checking reference to old domain in this patch, but aren't ignored like as *.po files, because excluding multiple suffixes is difficult for regexp matching.

check-code: discard filtering result of previous check for independence Before this patch, check-code.py applies filtering on the file content, to which filtering of previous check is already applied. This might hide issues, which should be detected by a subsequent check in "checks" list. Fortunately, this problem hasn't appeared, because there is no overlapping of filename matching (examined in the order below). 1. *.py or *.cgi 2. test-* (not *.t suffix) 3. *.c or *.h 4. *.t 5. *.txt 6. *.tmpl For example, adding a test, which wants to examine raw comment text in *.py files, at the end of current "checks" list doesn't work as expected, because a filter for *.py files normalizes comment text in them. Putting such test at the beginning of "checks" list also resolves this problem, but such dependence on the order decreases maintainability of check-code.py itself. This patch discards filtering result of previous check at the beginning of each checks, for independence of each checks.

help: replace selenic.com by mercurial-scm.org in man pages Source code repository and mailing list services have been already migrated to mercurial-scm.org domain.

help: replace selenic.com by mercurial-scm.org in command examples Source code repository service of Mercurial itself has been already migrated to mercurial-scm.org domain.

hghave: fix 'rmcwd' to ensure temporary directory is removed On platforms where cwd can't be removed, it should try rmdir() after chdir to the original cwd.

httppeer: make __del__ access to self.urlopener more safe Some errors could in some cases show unfortunate scary and confusing warnings from the httppeer delstructors: abort: nodename nor servname provided, or not known Exception AttributeError: "'httpspeer' object has no attribute 'urlopener'" in <bound method httpspeer.__del__ of <mercurial.httppeer.httpspeer object at 0x106e1f5d0>> ignored``` To mute that, take 7b15dd9125b3 to the next level and use getattr in __del__.

tests: test preserving execbit changes at amending only on execbit platform

tests: put temporary file outside the working directory for test portability test-largefiles-update.t creates temporary file exec-bit.patch inside the working directory for no-execbit platform specific test, but subsequent tests aren't aware of it. On execbit platform, subsequent tests can run successfully, because exec-bit.patch isn't created. But on no-execbit platform, this temporary file makes subsequent tests show "? exec-bit.patch" at each "hg status".

tests: avoid quoting of commit messages for test portability journal extension uses util.shellquote() to record command line, but result of it depends on runtime platform: double quotation is used on Windows and OpenVMS, but single quotation is used otherwise. test-journal-share.t sometimes specifies commit messages including white space on command line. It makes journal output depend on runtime platform, but commit message itself isn't important in this test case.

tests: use basic format code "%Y" instead of "%s" for test portability On Windows, strftime() doesn't support format code "%s", and it causes "invalid format string" error. https://msdn.microsoft.com/en-us/library/fe06s4ak.aspx test-command-template.t examines not seconds value in UTC, but arithmetic calculation. Therefore, using format code "%Y" instead of "%s" should be reasonable. FYI: - Python standard library reference doesn't list "%s" up in format code list required for "C standard (1989 version)", even though it also mentions that additional format codes are required for "C standard (1999 version)" https://docs.python.org/2.7/library/datetime.html#strftime-and-strptime-behavior - The Open Group Base Specifications Issue 7 (IEEE Std 1003.1-2008, 2016 Edition) doesn't require strftime to support format code "%s" http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html - "man strftime" of (Open/Oracle) Solaris and Mac OS X (= UNIX certified OSs) describes about format code "%s"