import-checker: ensure cffi is always a system module I've had reports that this is not always happening, so whitelist it the way we whitelist other problem cases.

atomictempfile: add context manager support Close the file (moving it in place) on clean context exit, discard when there has been an exception.

atomictempfile: add read to the supported file operations

atomictempfile: remove test ordering These tests are independent and numbering only makes it harder to add more and logically group them.

atomictempfile: use a tempdir to keep the test environment clean Rather than pre-emptively delete a file, execute the test in a dedicated temporary directory that is removed after each test.

test-revset: show how inconsistent the ordering of compound expressions is This adds mostly broken tests that will be fixed by subsequent patches. We generally don't do that, but this patch series would be hard to review without a set of broken tests. Note that some tests pass thanks to the reordering problem in optimize(). For instance, '2:0 & _intlist(0 1 2)' doesn't fail because it is rewritten as '_intlist(0 1 2) & 2:0'.

i18n: translate abort messages I found a few places where message given to abort is not translated, I don't find any reason to not translate them.

hgweb: display blamed revision once per block in annotate view I.e. when a revision blames a block of source lines, only display the revision link on the first line of the block (this is identified by the "blockhead" key in annotate context). This addresses item "Visual grouping of changesets" of the blame improvements plan (https://www.mercurial-scm.org/wiki/BlamePlan) which states: "Typically there are block of lines all attributed to the same revision. Instead of rendering the revision/changeset for every line, we could only render it once per block."

hgweb: highlight data of the current revision in annotate view * Distinguish the /annotate/<revision>/<file>#<linenumber> link when it would lead to the current page (i.e. <revision> is the current revision) (style it gray and undecorated). This indicates more clearly that this is a "dead-end" in blame navigation. * Display lines changed in current revision in green.

bashcompletion: show available command-line switches for aliases When auto-completing hg commands, aliases are listed, but not the available switches for an alias, because `HGPLAIN=1` filters these out. Add a `HGPLAINEXCEPT=alias` exception to resolve this. We make heavy use of aliases that drive hg log with custom revsets, sorting and the -G switch, but want our users to be able to auto-complete any additional command-line switches.

py3: shift from __future__ import absolute import to beginning (issue5269)

pull: add help information about pulling active bookmark

templates: add support for search webcommand in json style

templates: add support for summary webcommand in json style Change summary webcommand to yield each element of the shortlog instead of the entire list. This makes generated json more readable since each entry can be formatted separately, instead of returning all the shortlog content in a single string.

templates: add support for filerevision webcommand in json style

templates: add support for filelog webcommand in json style Modify changelistentry structure to also deliver phase and branch data and use either 'parents' or 'allparents' depending on what is defined in the view, in order to reuse it in filelog structure.

largefiles: make cloning not ask two times about password (issue4883) Before this commit url.opener overwritten stored password for connection with given url/user even when new password for given connection was not filled. This commit makes opener overwrites saved authentication only when it contains password.

url: remember http password database in ui object This makes http password database stored in ui object. It allows reusing authentication information when we use this database for creating password manager for the new connection.

url: extract password database from password manager So far password manager was keeping authentication information so opening new connection and creating new password manager made all saved authentication information lost. This commit separates password manager and password database to make it possible to reuse saved authentication information. This commit violates code checker because it adds add_password method (name with underscore) to passwordmgr object to provide method required by urllib2.

bookmarks: add 'hg pull -B .' for pulling the active bookmark (issue5258)

demandimport: delay loading for "from a import b" with absolute_import Before this patch, "from a import b" doesn't delay loading module "b", if absolute_import is enabled, even though "from . import b" does. For example: - it is assumed that extension X has "from P import M" for module M under package P with absolute_import feature - if importing module M is already delayed before loading extension X, loading module M in extension X is delayed until actually referring util, cmdutil, scmutil or so of Mercurial itself should be imported by "from . import M" style before loading extension X - otherwise, module M is loaded immediately at loading extension X, even if extension X itself isn't used at that "hg" command invocation Some minor modules (e.g. filemerge or so) of Mercurial itself aren't imported by "from . import M" style before loading extension X. And of course, external libraries aren't, too. This might cause startup performance problem of hg command, because many bundled extensions already enable absolute_import feature. To delay loading module for "from a import b" with absolute_import feature, this patch does below in "from a (or .a) import b" with absolute_import case: 1. import root module of "name" by system built-in __import__ (referred as _origimport) 2. recurse down the module chain for hierarchical "name" This logic can be shared with non absolute_import case. Therefore, this patch also centralizes it into chainmodules(). 3. and fall through to process elements in "fromlist" for the leaf module of "name" Processing elements in "fromlist" is executed in the code path after "if _pypy: .... else: ..." clause. Therefore, this patch replaces "if _pypy:" with "elif _pypy:" to share it. At 4f1144c3c72b introducing original "work around" for "from a import b" case, elements in "fromlist" were imported with "level=level". But "level" might be grater than 1 (e.g. level=2 in "from .. import b" case) at demandimport() invocation, and importing direct sub-module in "fromlist" with level grater than 1 causes unexpected result. IMHO, this seems main reason of "errors for unknown reason" described in 4f1144c3c72b, and we don't have to worry about it, because this issue was already fixed by 78d05778907b. This is reason why this patch removes "errors for unknown reasons" comment.

import-checker: increase portability for python 2.6.x Before this patch, fromlocalfunc() assumes that "module" attribute of ast.ImportFrom is None for "from . import a", and Python 2.7.x satisfies this assumption. On the other hand, with Python 2.6.x, "module" attribute of ast.ImportFrom is an empty string for "from . import a", and this causes failure of test-check-module-imports.t.

scmutil: allow access to filecache descriptor on class To make it easier to patch the wrapped function, make it possible to access the filecache descriptor directly on the class (rather than have to use ClassObject.__dict__['attributename']). Returning `self` when the first argument to `__get__` is `None` makes the descriptor behave the same way `property` objects do.

rebase: do not abort if all changesets have equivalents in the destination

changegroup: don't send empty subdirectory manifest groups When grafting/rebasing, it is common for multiple changesets to make the same change to a subdirectory. When writing the revlog for the directory, the revlog code already takes care of not writing the entry again. In 0c2a088ffcc5 (changegroup: prune subdirectory dirlogs too, 2016-02-12), I added the corresponding code in changegroup (not sending entries the client already has), but I forgot to avoid sending the entire changegroup if no nodes remained in the pruned set. Although that's harmless besides the wasted network traffic, the receiving side was checking for it (copied from the changegroup code for handling files). This resulted in the client crashing with: abort: received dir revlog group is empty Fix by simply not emitting a changegroup for the directory if there were no changes is it. This matches how files are handled.

chg: ignore SIGINT while waiting pager termination Otherwise the terminal would be left with unclean state. This is what fcc4b55876c3 does.

chg: reset signal handlers to default before waiting pager Our signal handlers forward signals to the server process, but it will disappear soon after hgc_close(). So we should unregister handlers before hgc_close(). Otherwise chg would abort due to kill(perrpid, sig) failure. The problem is spotted by SIGWINCH while waiting pager termination.

help: document that [subpaths] may rewrite relative paths The subpaths substitution logic first attempts to match the absolute repository path, then the relative subrepository path if that failed.