Matt Mackall <mpm@selenic.com> [Tue, 01 Sep 2015 16:08:07 -0500] rev 26120
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.
Matt Harbison <matt_harbison@yahoo.com> [Tue, 01 Sep 2015 11:39:08 -0400] rev 26119
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.
Durham Goode <durham@fb.com> [Sun, 30 Aug 2015 14:03:32 -0700] rev 26118
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
Durham Goode <durham@fb.com> [Sun, 30 Aug 2015 13:58:11 -0700] rev 26117
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.
Durham Goode <durham@fb.com> [Sun, 30 Aug 2015 13:34:30 -0700] rev 26116
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.
Durham Goode <durham@fb.com> [Sun, 30 Aug 2015 13:33:00 -0700] rev 26115
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.
Anton Shestakov <av6@dwimlabs.net> [Wed, 19 Aug 2015 21:43:13 +0800] rev 26114
monoblue: add archive links on summary page
timeless@mozdev.org [Sun, 30 Aug 2015 19:03:38 -0400] rev 26113
help: distinguish sections when multiple match (
issue4802)
Matt Mackall <mpm@selenic.com> [Mon, 31 Aug 2015 17:21:38 -0500] rev 26112
merge with stable
Augie Fackler <augie@google.com> [Tue, 25 Aug 2015 00:06:41 -0400] rev 26111
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.