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scmutil: avoid quadratic membership testing (issue5969)...
scmutil: avoid quadratic membership testing (issue5969) tr.changes['revs'] is an xrange, which has an O(n) __contains__ implementation. The `rev not in newrevs` lookup a few lines below will therefore be O(n^2) if all incoming changesets are public. This issue isn't present on @ because 45e05d39d9ce introduced a custom type implementing an xrange primitive with O(1) contains and switched tr.changes['revs'] to be an instance of that type. We work around the problem on the stable branch by casting the xrange to a set. This is a bit hacky because it requires allocating memory to hold each integer in the range. But we are already holding the full set of pulled revision numbers in memory multiple times (such as in `tr.changes['phases']`). So this is a relatively minor problem. This issue has been present since the phases reporting code was introduced in the 4.7 cycle by eb9835014d20. This change should be reverted/ignored when stable is merged into default. On the mozilla-unified repository with 483492 changesets, `hg clone` time improves substantially: before: 1843.700s user; 29.810s sys after: 461.170s user; 29.360s sys

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hg-ssh.8.txt
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========
hg-ssh
========
----------------------------------------
restricted ssh login shell for Mercurial
----------------------------------------
:Author: Thomas Arendsen Hein <thomas@intevation.de>
:Organization: Mercurial
:Manual section: 8
:Manual group: Mercurial Manual
.. contents::
:backlinks: top
:class: htmlonly
:depth: 1
Synopsis
""""""""
**hg-ssh** repositories...
Description
"""""""""""
**hg-ssh** is a wrapper for ssh access to a limited set of mercurial repos.
To be used in ~/.ssh/authorized_keys with the "command" option, see sshd(8):
command="hg-ssh path/to/repo1 /path/to/repo2 ~/repo3 ~user/repo4" ssh-dss ...
(probably together with these other useful options:
no-port-forwarding,no-X11-forwarding,no-agent-forwarding)
This allows pull/push over ssh from/to the repositories given as arguments.
If all your repositories are subdirectories of a common directory, you can
allow shorter paths with:
command="cd path/to/my/repositories && hg-ssh repo1 subdir/repo2"
You can use pattern matching of your normal shell, e.g.:
command="cd repos && hg-ssh user/thomas/* projects/{mercurial,foo}"
You can also add a --read-only flag to allow read-only access to a key, e.g.:
command="hg-ssh --read-only repos/\*"
Bugs
""""
Probably lots, please post them to the mailing list (see Resources_
below) when you find them.
See Also
""""""""
|hg(1)|_
Author
""""""
Written by Matt Mackall <mpm@selenic.com>
Resources
"""""""""
Main Web Site: https://mercurial-scm.org/
Source code repository: https://www.mercurial-scm.org/repo/hg
Mailing list: https://www.mercurial-scm.org/mailman/listinfo/mercurial/
Copying
"""""""
Copyright (C) 2005-2016 Matt Mackall.
Free use of this software is granted under the terms of the GNU General
Public License version 2 or any later version.
.. include:: common.txt