largefiles: explicitly set the source and sink types to 'hg' for lfconvert I stumbled into this prior to adding the type indicator on the source and sink, but there's no reason to try to infer the types for this conversion.

lfs: add a repo requirement for this extension when converting to lfs This covers both the vanilla repo -> lfs repo and largefiles -> lfs conversions. The largefiles extension adds the requirement directly, because it has a dedicated command to convert. Using the convert extension is better, because it supports more features. I'd like ideas about how to ensure that converting away from lfs works on all files. (See comments in test-lfs.t)

convert: allow the sink object to be wrapped when the extension isn't loaded The next patch will wrap the conversion code, in order to write out a requirement for 'lfs' when appropriate. Wrapping convcmd.convertsink() in an afterloaded callback works fine when the convert extension is enabled by the user. The problem here is that lfconvert uses the convert extension, whether or not it was formally enabled by the user. My first attempt was to have lfs install an afterloaded callback that would wrap the convert sink if convert was loaded, or wrap lfconvert if it wasn't. Then the lfconvert override could install an afterloaded callback to try wrapping the convert sink again, before calling the original lfconvert. But that breaks down if largefiles can't load the convert extension on the fly. [1] Further, some tests were failing with an error indicating that the size of the afterloaded list changed while iterating it. Yuya mentioned that maybe some bits of convert could be moved into core, but I'm not sure where to draw that line. The convertsink() method depends on the list of sinks, which in turn depends on the sink classes. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/108038.html

convert: save an indicator of the repo type for sources and sinks This seems like basic info to have, and will be used shortly when deciding whether or not to wrap the class for lfs conversions. The other option is to just add a function to each class. But this seems better in that the strings aren't duplicated, and the constructor for most of these will run even if the VCS isn't installed, so it's easier to catch errors.

lfs: add a repo requirement for this extension once an lfs file is committed Largefiles does the same thing (also delayed until the first largefile commit), to prevent access to the repo without the extension. In the case of this extension, not having the extension loaded while accessing an lfs file results in cryptic errors about "missing processor for flag '0x2000'". If enabled locally but not remotely, the cryptic error message is about no common changegroup version. (It wants '03', which is currently experimental.) The largefiles extension looks for any tracked file that starts with '.hglf/'. Unfortunately, that doesn't work here. I didn't see any way to get the files that were just committed, without doing a full status. But since there's no secondary check on adding an lfs file once the extension is loaded and a threshold set, the best practice is to only enable this locally on a repo that needs it. That should minimize the unnecessary overhead for repos without an lfs file.

match: remove doc about undefined behavior of visitdir() This was added by 8545bd381504, but core matchers support visitdir() of arbitrary locations since 2773540c3650, and verifier._verifymanifest() doesn't seem to strictly obey the restriction. I have no idea how important this API contract is for third-party extensions. That's why this patch is RFC.

merge with stable

hgweb: add .jshintrc with some basic rules This file is picked up automatically by jshint, so no extra changes required in test-check-jshint.t.

hgweb: look up "URLSearchParams" in "window" to work around jshint issues Unfortunately, current version of jshint (2.9.5) doesn't know such a global variable and complains that it's undefined. Since this line tries to look up URLSearchParams in a global scope (i.e. window), let's simply preface it with "window." to work around jshint.

hgweb: define locally used variables as actually local in mercurial.js Variables that are used or assigned without any declaration using var (or let, or const) are considered global. In many cases this is inadvertent and actually causes a variable leaking to a broader scope, such as a temporary variable used inside a loop suddenly being accessible in global scope. (This corresponds to "undef" option of jshint). So this patch limits the scope of variables that don't need to be global. There are a lot of helper variables in Graph.render() used in a loop, I've declared them all on one line to reduce patch size. "radius" is special because it wasn't passed to graph.vertex, but was used there (it worked because this variable leaked to global scope). "window.graph" is created by an inline script in graph.tmpl so that it can be used in ajaxScrollInit() function, this patch makes this fact explicit by assigning window.graph to a local variable.

hgweb: rename an instance of XMLHttpRequest to xhr in mercurial.js "xhr" is a really widespread name for this kind of things, no idea where did "xfr" come from (the original 2228bd109706 doesn't explain that). Let's just change one letter so the name makes more sense.

hgweb: properly iterate over arrays and objects in mercurial.js In JavaScript, using for-in loops to access every property of an object can have unexpected results when inheritance is involved. For example, if some piece of code adds a property (it may be a method too) to Object.prototype, then all for-in loops that iterate over keys of any object (also anything that inherits Object) will get that property on one of the iterations. To filter out such unexpected properties for-in loops have to use Object.hasOwnProperty() method. (This corresponds to "forin" option of jshint). In the two first cases "data" and "edges" are arrays, to it's simpler to just switch to using a regular for-with-a-counter loop.

hgweb: use strict equals in mercurial.js This patch changes "==" (equals operator) to "===" (strict equals operator). The difference between them is that the latter doesn't do any type coercions. It's handy to compare string '1' to number 1 sometimes, but most of the time using "==" is inadvertent and can be replaced by an explicit type conversion. (This corresponds to "eqeqeq" option of jshint). Some of the changes in this patch are straightforward, e.g. when comparing results of typeof (they could only be strings). The same goes for 'none' and similar strings that can't be sensibly coerced to some other type. Two changes that compare values to "1" and "0" can be clarified: getAttribute() returns either a string or null, but comparing null to a string is always false, so no logic is lost.

hgweb: use strict equals, remove non-breaking space in followlines.js The first hunk had a non-breaking space character just before "{", it's not an error or anything, but let's fix it while we're at it. (This corresponds to "nonbsp" option of jshint). Hunks 2 and 3 change "==" (equals operator) to "===" (strict equals operator). The difference between them is that the latter doesn't do any type coercions. It's handy to compare string '1' to number 1 sometimes, but most of the time using "==" is inadvertent and can be replaced by an explicit type conversion. (This corresponds to "eqeqeq" option of jshint). Most of this file already uses strict equals operator, and in the code affected type coercion is not needed, because tagName and selectableTag are both strings and endId and startId are both numbers.

run-tests: make "| foo (re)" not match everything We make "foo (re)" match the entire line by adding a \Z to the regular expression before matching. However, that doesn't help when the regular expression is something like "| foo", because that gets translated to "| foo\Z", where the "|" has lower precedence and it thus matches the empty string, which is of course a prefix of every string. Fix by wrapping expression in a group before adding the \Z to the end. Differential Revision: https://phab.mercurial-scm.org/D1546

tests: fix regex in test-subrepo-git.t to match entire string Due to a bug in the test runner (fixed by the next commit), the regex used for matching lines like " foobar | 2 +-" stoppped at the "|" and the test passed even though the rest of the line did not match. The test seems to have been supposed to match "|" and "+" literally on those lines, so this changes the regex to escape those characters. It also changes a "\s*" to "\s+" since I think we'll always include a space after the "|" in the diffstat output. Differential Revision: https://phab.mercurial-scm.org/D1545

contrib: improve check-code ban on $LOCALIP in output without (glob) Differential Revision: https://phab.mercurial-scm.org/D1553

tests: re-add (glob) for $LOCALIP matches This should fix most of the failing tests on the FreeBSD builder, since it has no 127/8 series IP as a side effect of being trapped in a jail. Differential Revision: https://phab.mercurial-scm.org/D1552

py3: make sure the first argument of time.strftime() is str time.strftime() does not accepts bytes as its first argument on py3. Differential Revision: https://phab.mercurial-scm.org/D1559

py3: alias xrange to range in tests/seq.py Differential Revision: https://phab.mercurial-scm.org/D1560

py3: use pycompat.maplist() instead of map() Differential Revision: https://phab.mercurial-scm.org/D1558

tests: move JSON escape test to test-hgweb-json.t The original tests (kanji and null) in test-hgweb-commands.t come from aff419e260f9 and 823a7d79ef82, but they check json escape filter by using JavaScript variable on /graph page, which is awkward, and I'm planning to remove commit description from this variable soon. Let's move the parts that check json template filter to a more appropriate file and use normal json-* templates.

py3: fix handling of keyword arguments in revert Differential Revision: https://phab.mercurial-scm.org/D1554

fsmonitor: issue debug messages when we fall back to core status Having more information about when and why fsmonitor bails out help when looking into status performance.

py3: add b'' to regular expressions which are raw strings Differential Revision: https://phab.mercurial-scm.org/D1538

py3: use '%d' for integers rather than '%s' obsolete._readmarkers() returns an integer version number. Differential Revision: https://phab.mercurial-scm.org/D1537

py3: fix args handling for obsfate template Differential Revision: https://phab.mercurial-scm.org/D1536

py3: remove test-terse-status.t from python3 whitelist as it was renamed The renamed file exists in the whitelist. Differential Revision: https://phab.mercurial-scm.org/D1540

test-lfs: allow the test server to be killed on Windows Apparently '$!' doesn't return a Win32 PID, so the process was never killed, and the next run was screwed up. Oddly, without the explicit killdaemons.py at the end, the test seems to hang. This spawning is just sad, so I limited it to Windows.

test-lfs: perform the `chmod +x` command in a manner compatible with Windows