merge with stable

doc/hgrc.5.txt

@@ -1,1118 +1,1121 b''
 ======
  hgrc
 ======
 
 ---------------------------------
 configuration files for Mercurial
 ---------------------------------
 
 :Author:         Bryan O'Sullivan <[e-mail]>
 :Organization:   Mercurial
 :Manual section: 5
 :Manual group:   Mercurial Manual
 
 .. contents::
    :backlinks: top
    :class: htmlonly
 
 
 Synopsis
 --------
 
 The Mercurial system uses a set of configuration files to control
 aspects of its behavior.
 
 Files
 -----
 
 Mercurial reads configuration data from several files, if they exist.
 The names of these files depend on the system on which Mercurial is
 installed. ``*.rc`` files from a single directory are read in
 alphabetical order, later ones overriding earlier ones. Where multiple
 paths are given below, settings from earlier paths override later
 ones.
 
 | (Unix, Windows) ``<repo>/.hg/hgrc``
 
     Per-repository configuration options that only apply in a
     particular repository. This file is not version-controlled, and
     will not get transferred during a "clone" operation. Options in
     this file override options in all other configuration files. On
     Unix, most of this file will be ignored if it doesn't belong to a
     trusted user or to a trusted group. See the documentation for the
     trusted_ section below for more details.
 
 | (Unix) ``$HOME/.hgrc``
 | (Windows) ``%USERPROFILE%\.hgrc``
 | (Windows) ``%USERPROFILE%\Mercurial.ini``
 | (Windows) ``%HOME%\.hgrc``
 | (Windows) ``%HOME%\Mercurial.ini``
 
     Per-user configuration file(s), for the user running Mercurial. On
     Windows 9x, ``%HOME%`` is replaced by ``%APPDATA%``. Options in these
     files apply to all Mercurial commands executed by this user in any
     directory. Options in these files override per-system and per-installation
     options.
 
 | (Unix) ``/etc/mercurial/hgrc``
 | (Unix) ``/etc/mercurial/hgrc.d/*.rc``
 
     Per-system configuration files, for the system on which Mercurial
     is running. Options in these files apply to all Mercurial commands
     executed by any user in any directory. Options in these files
     override per-installation options.
 
 | (Unix) ``<install-root>/etc/mercurial/hgrc``
 | (Unix) ``<install-root>/etc/mercurial/hgrc.d/*.rc``
 
     Per-installation configuration files, searched for in the
     directory where Mercurial is installed. ``<install-root>`` is the
     parent directory of the **hg** executable (or symlink) being run. For
     example, if installed in ``/shared/tools/bin/hg``, Mercurial will look
     in ``/shared/tools/etc/mercurial/hgrc``. Options in these files apply
     to all Mercurial commands executed by any user in any directory.
 
 | (Windows) ``<install-dir>\Mercurial.ini``
 | (Windows) ``<install-dir>\hgrc.d\*.rc``
 | (Windows) ``HKEY_LOCAL_MACHINE\SOFTWARE\Mercurial``
 
     Per-installation/system configuration files, for the system on
     which Mercurial is running. Options in these files apply to all
     Mercurial commands executed by any user in any directory. Registry
     keys contain PATH-like strings, every part of which must reference
     a ``Mercurial.ini`` file or be a directory where ``*.rc`` files will
     be read.  Mercurial checks each of these locations in the specified
     order until one or more configuration files are detected.  If the
     pywin32 extensions are not installed, Mercurial will only look for
     site-wide configuration in ``C:\Mercurial\Mercurial.ini``.
 
 Syntax
 ------
 
 A configuration file consists of sections, led by a ``[section]`` header
 and followed by ``name = value`` entries (sometimes called
 ``configuration keys``)::
 
     [spam]
     eggs=ham
     green=
        eggs
 
 Each line contains one entry. If the lines that follow are indented,
 they are treated as continuations of that entry. Leading whitespace is
 removed from values. Empty lines are skipped. Lines beginning with
 ``#`` or ``;`` are ignored and may be used to provide comments.
 
 Configuration keys can be set multiple times, in which case mercurial
 will use the value that was configured last. As an example::
 
     [spam]
     eggs=large
     ham=serrano
     eggs=small
 
 This would set the configuration key named ``eggs`` to ``small``.
 
 It is also possible to define a section multiple times. A section can
 be redefined on the same and/or on different hgrc files. For example::
 
     [foo]
     eggs=large
     ham=serrano
     eggs=small
 
     [bar]
     eggs=ham
     green=
        eggs
 
     [foo]
     ham=prosciutto
     eggs=medium
     bread=toasted
 
 This would set the ``eggs``, ``ham``, and ``bread`` configuration keys
 of the ``foo`` section to ``medium``, ``prosciutto``, and ``toasted``,
 respectively. As you can see there only thing that matters is the last
 value that was set for each of the configuration keys.
 
 If a configuration key is set multiple times in different
 configuration files the final value will depend on the order in which
 the different configuration files are read, with settings from earlier
 paths overriding later ones as described on the ``Files`` section
 above.
 
 A line of the form ``%include file`` will include ``file`` into the
 current configuration file. The inclusion is recursive, which means
 that included files can include other files. Filenames are relative to
 the configuration file in which the ``%include`` directive is found.
 Environment variables and ``~user`` constructs are expanded in
 ``file``. This lets you do something like::
 
   %include ~/.hgrc.d/$HOST.rc
 
 to include a different configuration file on each computer you use.
 
 A line with ``%unset name`` will remove ``name`` from the current
 section, if it has been set previously.
 
 The values are either free-form text strings, lists of text strings,
 or Boolean values. Boolean values can be set to true using any of "1",
 "yes", "true", or "on" and to false using "0", "no", "false", or "off"
 (all case insensitive).
 
 List values are separated by whitespace or comma, except when values are
 placed in double quotation marks::
 
   allow_read = "John Doe, PhD", brian, betty
 
 Quotation marks can be escaped by prefixing them with a backslash. Only
 quotation marks at the beginning of a word is counted as a quotation
 (e.g., ``foo"bar baz`` is the list of ``foo"bar`` and ``baz``).
 
 Sections
 --------
 
 This section describes the different sections that may appear in a
 Mercurial "hgrc" file, the purpose of each section, its possible keys,
 and their possible values.
 
 ``alias``
 """""""""
 Defines command aliases.
 Aliases allow you to define your own commands in terms of other
 commands (or aliases), optionally including arguments.
 
 Alias definitions consist of lines of the form::
 
     <alias> = <command> [<argument]...
 
 For example, this definition::
 
     latest = log --limit 5
 
 creates a new command ``latest`` that shows only the five most recent
 changesets. You can define subsequent aliases using earlier ones::
 
     stable5 = latest -b stable
 
 .. note:: It is possible to create aliases with the same names as
    existing commands, which will then override the original
    definitions. This is almost always a bad idea!
 
 
 ``auth``
 """"""""
 
 Authentication credentials for HTTP authentication. This section
 allows you to store usernames and passwords for use when logging
 *into* HTTP servers. See the web_ configuration section if you want to
 configure *who* can login to your HTTP server.
 
 Each line has the following format::
 
     <name>.<argument> = <value>
 
 where ``<name>`` is used to group arguments into authentication
 entries. Example::
 
     foo.prefix = hg.intevation.org/mercurial
     foo.username = foo
     foo.password = bar
     foo.schemes = http https
 
     bar.prefix = secure.example.org
     bar.key = path/to/file.key
     bar.cert = path/to/file.cert
     bar.schemes = https
 
 Supported arguments:
 
 ``prefix``
     Either ``*`` or a URI prefix with or without the scheme part.
     The authentication entry with the longest matching prefix is used
     (where ``*`` matches everything and counts as a match of length
     1). If the prefix doesn't include a scheme, the match is performed
     against the URI with its scheme stripped as well, and the schemes
     argument, q.v., is then subsequently consulted.
 ``username``
     Optional. Username to authenticate with. If not given, and the
     remote site requires basic or digest authentication, the user will
     be prompted for it. Environment variables are expanded in the
     username letting you do ``foo.username = $USER``.
 ``password``
     Optional. Password to authenticate with. If not given, and the
     remote site requires basic or digest authentication, the user
     will be prompted for it.
 ``key``
     Optional. PEM encoded client certificate key file. Environment
     variables are expanded in the filename.
 ``cert``
     Optional. PEM encoded client certificate chain file. Environment
     variables are expanded in the filename.
 ``schemes``
     Optional. Space separated list of URI schemes to use this
     authentication entry with. Only used if the prefix doesn't include
     a scheme. Supported schemes are http and https. They will match
     static-http and static-https respectively, as well.
     Default: https.
 
 If no suitable authentication entry is found, the user is prompted
 for credentials as usual if required by the remote.
 
 
 ``decode/encode``
 """""""""""""""""
 Filters for transforming files on checkout/checkin. This would
 typically be used for newline processing or other
 localization/canonicalization of files.
 
 Filters consist of a filter pattern followed by a filter command.
 Filter patterns are globs by default, rooted at the repository root.
 For example, to match any file ending in ``.txt`` in the root
 directory only, use the pattern ``*.txt``. To match any file ending
 in ``.c`` anywhere in the repository, use the pattern ``**.c``.
 For each file only the first matching filter applies.
 
 The filter command can start with a specifier, either ``pipe:`` or
 ``tempfile:``. If no specifier is given, ``pipe:`` is used by default.
 
 A ``pipe:`` command must accept data on stdin and return the transformed
 data on stdout.
 
 Pipe example::
 
   [encode]
   # uncompress gzip files on checkin to improve delta compression
   # note: not necessarily a good idea, just an example
   *.gz = pipe: gunzip
 
   [decode]
   # recompress gzip files when writing them to the working dir (we
   # can safely omit "pipe:", because it's the default)
   *.gz = gzip
 
 A ``tempfile:`` command is a template. The string ``INFILE`` is replaced
 with the name of a temporary file that contains the data to be
 filtered by the command. The string ``OUTFILE`` is replaced with the name
 of an empty temporary file, where the filtered data must be written by
 the command.
 
 .. note:: The tempfile mechanism is recommended for Windows systems,
    where the standard shell I/O redirection operators often have
    strange effects and may corrupt the contents of your files.
 
 This filter mechanism is used internally by the ``eol`` extension to
 translate line ending characters between Windows (CRLF) and Unix (LF)
 format. We suggest you use the ``eol`` extension for convenience.
 
 
 ``defaults``
 """"""""""""
 
 (defaults are deprecated. Don't use them. Use aliases instead)
 
 Use the ``[defaults]`` section to define command defaults, i.e. the
 default options/arguments to pass to the specified commands.
 
 The following example makes :hg:`log` run in verbose mode, and
 :hg:`status` show only the modified files, by default::
 
   [defaults]
   log = -v
   status = -m
 
 The actual commands, instead of their aliases, must be used when
 defining command defaults. The command defaults will also be applied
 to the aliases of the commands defined.
 
 
 ``diff``
 """"""""
 
 Settings used when displaying diffs. They are all Boolean and
 defaults to False.
 
 ``git``
     Use git extended diff format.
 ``nodates``
     Don't include dates in diff headers.
 ``showfunc``
     Show which function each change is in.
 ``ignorews``
     Ignore white space when comparing lines.
 ``ignorewsamount``
     Ignore changes in the amount of white space.
 ``ignoreblanklines``
     Ignore changes whose lines are all blank.
 
 ``email``
 """""""""
 Settings for extensions that send email messages.
 
 ``from``
     Optional. Email address to use in "From" header and SMTP envelope
     of outgoing messages.
 ``to``
     Optional. Comma-separated list of recipients' email addresses.
 ``cc``
     Optional. Comma-separated list of carbon copy recipients'
     email addresses.
 ``bcc``
     Optional. Comma-separated list of blind carbon copy recipients'
     email addresses.
 ``method``
     Optional. Method to use to send email messages. If value is ``smtp``
     (default), use SMTP (see the SMTP_ section for configuration).
     Otherwise, use as name of program to run that acts like sendmail
     (takes ``-f`` option for sender, list of recipients on command line,
     message on stdin). Normally, setting this to ``sendmail`` or
     ``/usr/sbin/sendmail`` is enough to use sendmail to send messages.
 ``charsets``
     Optional. Comma-separated list of character sets considered
     convenient for recipients. Addresses, headers, and parts not
     containing patches of outgoing messages will be encoded in the
     first character set to which conversion from local encoding
     (``$HGENCODING``, ``ui.fallbackencoding``) succeeds. If correct
     conversion fails, the text in question is sent as is. Defaults to
     empty (explicit) list.
 
     Order of outgoing email character sets:
 
     1. ``us-ascii``: always first, regardless of settings
     2. ``email.charsets``: in order given by user
     3. ``ui.fallbackencoding``: if not in email.charsets
     4. ``$HGENCODING``: if not in email.charsets
     5. ``utf-8``: always last, regardless of settings
 
 Email example::
 
   [email]
   from = Joseph User <[e-mail]>
   method = /usr/sbin/sendmail
   # charsets for western Europeans
   # us-ascii, utf-8 omitted, as they are tried first and last
   charsets = iso-8859-1, iso-8859-15, windows-1252
 
 
 ``extensions``
 """"""""""""""
 
 Mercurial has an extension mechanism for adding new features. To
 enable an extension, create an entry for it in this section.
 
 If you know that the extension is already in Python's search path,
 you can give the name of the module, followed by ``=``, with nothing
 after the ``=``.
 
 Otherwise, give a name that you choose, followed by ``=``, followed by
 the path to the ``.py`` file (including the file name extension) that
 defines the extension.
 
 To explicitly disable an extension that is enabled in an hgrc of
 broader scope, prepend its path with ``!``, as in
 ``hgext.foo = !/ext/path`` or ``hgext.foo = !``  when path is not
 supplied.
 
 Example for ``~/.hgrc``::
 
   [extensions]
   # (the mq extension will get loaded from Mercurial's path)
   hgext.mq =
   # (this extension will get loaded from the file specified)
   myfeature = ~/.hgext/myfeature.py
 
 
 ``hostfingerprints``
 """"""""""""""""""""
 
 Fingerprints of the certificates of known HTTPS servers.
 A HTTPS connection to a server with a fingerprint configured here will
 only succeed if the servers certificate matches the fingerprint.
 This is very similar to how ssh known hosts works.
 The fingerprint is the SHA-1 hash value of the DER encoded certificate.
 The CA chain and web.cacerts is not used for servers with a fingerprint.
 
 For example::
 
     [hostfingerprints]
     hg.intevation.org = 38:76:52:7c:87:26:9a:8f:4a:f8:d3:de:08:45:3b:ea:d6:4b:ee:cc
 
 This feature is only supported when using Python 2.6 or later.
 
 
 ``format``
 """"""""""
 
 ``usestore``
     Enable or disable the "store" repository format which improves
     compatibility with systems that fold case or otherwise mangle
     filenames. Enabled by default. Disabling this option will allow
     you to store longer filenames in some situations at the expense of
     compatibility and ensures that the on-disk format of newly created
     repositories will be compatible with Mercurial before version 0.9.4.
 
 ``usefncache``
     Enable or disable the "fncache" repository format which enhances
     the "store" repository format (which has to be enabled to use
     fncache) to allow longer filenames and avoids using Windows
     reserved names, e.g. "nul". Enabled by default. Disabling this
     option ensures that the on-disk format of newly created
     repositories will be compatible with Mercurial before version 1.1.
 
 ``dotencode``
     Enable or disable the "dotencode" repository format which enhances
     the "fncache" repository format (which has to be enabled to use
     dotencode) to avoid issues with filenames starting with ._ on
     Mac OS X and spaces on Windows. Enabled by default. Disabling this
     option ensures that the on-disk format of newly created
     repositories will be compatible with Mercurial before version 1.7.
 
 ``merge-patterns``
 """"""""""""""""""
 
 This section specifies merge tools to associate with particular file
 patterns. Tools matched here will take precedence over the default
 merge tool. Patterns are globs by default, rooted at the repository
 root.
 
 Example::
 
   [merge-patterns]
   **.c = kdiff3
   **.jpg = myimgmerge
 
 ``merge-tools``
 """""""""""""""
 
 This section configures external merge tools to use for file-level
 merges.
 
 Example ``~/.hgrc``::
 
   [merge-tools]
   # Override stock tool location
   kdiff3.executable = ~/bin/kdiff3
   # Specify command line
   kdiff3.args = $base $local $other -o $output
   # Give higher priority
   kdiff3.priority = 1
 
   # Define new tool
   myHtmlTool.args = -m $local $other $base $output
   myHtmlTool.regkey = Software\FooSoftware\HtmlMerge
   myHtmlTool.priority = 1
 
 Supported arguments:
 
 ``priority``
   The priority in which to evaluate this tool.
   Default: 0.
 ``executable``
   Either just the name of the executable or its pathname.  On Windows,
   the path can use environment variables with ${ProgramFiles} syntax.
   Default: the tool name.
 ``args``
   The arguments to pass to the tool executable. You can refer to the
   files being merged as well as the output file through these
   variables: ``$base``, ``$local``, ``$other``, ``$output``.
   Default: ``$local $base $other``
 ``premerge``
   Attempt to run internal non-interactive 3-way merge tool before
   launching external tool.  Options are ``true``, ``false``, or ``keep``
   to leave markers in the file if the premerge fails.
   Default: True
 ``binary``
   This tool can merge binary files. Defaults to False, unless tool
   was selected by file pattern match.
 ``symlink``
   This tool can merge symlinks. Defaults to False, even if tool was
   selected by file pattern match.
 ``check``
   A list of merge success-checking options:
 
   ``changed``
     Ask whether merge was successful when the merged file shows no changes.
   ``conflicts``
     Check whether there are conflicts even though the tool reported success.
   ``prompt``
     Always prompt for merge success, regardless of success reported by tool.
 
 ``checkchanged``
   True is equivalent to ``check = changed``.
   Default: False
 ``checkconflicts``
   True is equivalent to ``check = conflicts``.
   Default: False
 ``fixeol``
   Attempt to fix up EOL changes caused by the merge tool.
   Default: False
 ``gui``
   This tool requires a graphical interface to run. Default: False
 ``regkey``
   Windows registry key which describes install location of this
   tool. Mercurial will search for this key first under
   ``HKEY_CURRENT_USER`` and then under ``HKEY_LOCAL_MACHINE``.
   Default: None
 ``regname``
   Name of value to read from specified registry key. Defaults to the
   unnamed (default) value.
 ``regappend``
   String to append to the value read from the registry, typically
   the executable name of the tool.
   Default: None
 
 
 ``hooks``
 """""""""
 Commands or Python functions that get automatically executed by
 various actions such as starting or finishing a commit. Multiple
 hooks can be run for the same action by appending a suffix to the
 action. Overriding a site-wide hook can be done by changing its
 value or setting it to an empty string.
 
 Example ``.hg/hgrc``::
 
   [hooks]
   # update working directory after adding changesets
   changegroup.update = hg update
   # do not use the site-wide hook
   incoming =
   incoming.email = /my/email/hook
   incoming.autobuild = /my/build/hook
 
 Most hooks are run with environment variables set that give useful
 additional information. For each hook below, the environment
 variables it is passed are listed with names of the form ``$HG_foo``.
 
 ``changegroup``
   Run after a changegroup has been added via push, pull or unbundle.
   ID of the first new changeset is in ``$HG_NODE``. URL from which
   changes came is in ``$HG_URL``.
 ``commit``
   Run after a changeset has been created in the local repository. ID
   of the newly created changeset is in ``$HG_NODE``. Parent changeset
   IDs are in ``$HG_PARENT1`` and ``$HG_PARENT2``.
 ``incoming``
   Run after a changeset has been pulled, pushed, or unbundled into
   the local repository. The ID of the newly arrived changeset is in
   ``$HG_NODE``. URL that was source of changes came is in ``$HG_URL``.
 ``outgoing``
   Run after sending changes from local repository to another. ID of
   first changeset sent is in ``$HG_NODE``. Source of operation is in
   ``$HG_SOURCE``; see "preoutgoing" hook for description.
 ``post-<command>``
   Run after successful invocations of the associated command. The
   contents of the command line are passed as ``$HG_ARGS`` and the result
   code in ``$HG_RESULT``. Parsed command line arguments are passed as 
   ``$HG_PATS`` and ``$HG_OPTS``. These contain string representations of
   the python data internally passed to <command>. ``$HG_OPTS`` is a 
   dictionary of options (with unspecified options set to their defaults).
   ``$HG_PATS`` is a list of arguments. Hook failure is ignored.
 ``pre-<command>``
   Run before executing the associated command. The contents of the
   command line are passed as ``$HG_ARGS``. Parsed command line arguments
   are passed as ``$HG_PATS`` and ``$HG_OPTS``. These contain string
   representations of the data internally passed to <command>. ``$HG_OPTS``
   is a  dictionary of options (with unspecified options set to their
   defaults). ``$HG_PATS`` is a list of arguments. If the hook returns 
   failure, the command doesn't execute and Mercurial returns the failure
   code.
 ``prechangegroup``
   Run before a changegroup is added via push, pull or unbundle. Exit
   status 0 allows the changegroup to proceed. Non-zero status will
   cause the push, pull or unbundle to fail. URL from which changes
   will come is in ``$HG_URL``.
 ``precommit``
   Run before starting a local commit. Exit status 0 allows the
   commit to proceed. Non-zero status will cause the commit to fail.
   Parent changeset IDs are in ``$HG_PARENT1`` and ``$HG_PARENT2``.
 ``preoutgoing``
   Run before collecting changes to send from the local repository to
   another. Non-zero status will cause failure. This lets you prevent
   pull over HTTP or SSH. Also prevents against local pull, push
   (outbound) or bundle commands, but not effective, since you can
   just copy files instead then. Source of operation is in
   ``$HG_SOURCE``. If "serve", operation is happening on behalf of remote
   SSH or HTTP repository. If "push", "pull" or "bundle", operation
   is happening on behalf of repository on same system.
 ``pretag``
   Run before creating a tag. Exit status 0 allows the tag to be
   created. Non-zero status will cause the tag to fail. ID of
   changeset to tag is in ``$HG_NODE``. Name of tag is in ``$HG_TAG``. Tag is
   local if ``$HG_LOCAL=1``, in repository if ``$HG_LOCAL=0``.
 ``pretxnchangegroup``
   Run after a changegroup has been added via push, pull or unbundle,
   but before the transaction has been committed. Changegroup is
   visible to hook program. This lets you validate incoming changes
   before accepting them. Passed the ID of the first new changeset in
   ``$HG_NODE``. Exit status 0 allows the transaction to commit. Non-zero
   status will cause the transaction to be rolled back and the push,
   pull or unbundle will fail. URL that was source of changes is in
   ``$HG_URL``.
 ``pretxncommit``
   Run after a changeset has been created but the transaction not yet
   committed. Changeset is visible to hook program. This lets you
   validate commit message and changes. Exit status 0 allows the
   commit to proceed. Non-zero status will cause the transaction to
   be rolled back. ID of changeset is in ``$HG_NODE``. Parent changeset
   IDs are in ``$HG_PARENT1`` and ``$HG_PARENT2``.
 ``preupdate``
   Run before updating the working directory. Exit status 0 allows
   the update to proceed. Non-zero status will prevent the update.
   Changeset ID of first new parent is in ``$HG_PARENT1``. If merge, ID
   of second new parent is in ``$HG_PARENT2``.
 ``tag``
   Run after a tag is created. ID of tagged changeset is in ``$HG_NODE``.
   Name of tag is in ``$HG_TAG``. Tag is local if ``$HG_LOCAL=1``, in
   repository if ``$HG_LOCAL=0``.
 ``update``
   Run after updating the working directory. Changeset ID of first
   new parent is in ``$HG_PARENT1``. If merge, ID of second new parent is
   in ``$HG_PARENT2``. If the update succeeded, ``$HG_ERROR=0``. If the
   update failed (e.g. because conflicts not resolved), ``$HG_ERROR=1``.
 
 .. note:: It is generally better to use standard hooks rather than the
    generic pre- and post- command hooks as they are guaranteed to be
    called in the appropriate contexts for influencing transactions.
    Also, hooks like "commit" will be called in all contexts that
    generate a commit (e.g. tag) and not just the commit command.
 
 .. note:: Environment variables with empty values may not be passed to
    hooks on platforms such as Windows. As an example, ``$HG_PARENT2``
    will have an empty value under Unix-like platforms for non-merge
    changesets, while it will not be available at all under Windows.
 
 The syntax for Python hooks is as follows::
 
   hookname = python:modulename.submodule.callable
   hookname = python:/path/to/python/module.py:callable
 
 Python hooks are run within the Mercurial process. Each hook is
 called with at least three keyword arguments: a ui object (keyword
 ``ui``), a repository object (keyword ``repo``), and a ``hooktype``
 keyword that tells what kind of hook is used. Arguments listed as
 environment variables above are passed as keyword arguments, with no
 ``HG_`` prefix, and names in lower case.
 
 If a Python hook returns a "true" value or raises an exception, this
 is treated as a failure.
 
 
 ``http_proxy``
 """"""""""""""
 Used to access web-based Mercurial repositories through a HTTP
 proxy.
 
 ``host``
     Host name and (optional) port of the proxy server, for example
     "myproxy:8000".
 ``no``
     Optional. Comma-separated list of host names that should bypass
     the proxy.
 ``passwd``
     Optional. Password to authenticate with at the proxy server.
 ``user``
     Optional. User name to authenticate with at the proxy server.
 ``always``
     Optional. Always use the proxy, even for localhost and any entries
     in ``http_proxy.no``. True or False. Default: False.
 
 ``smtp``
 """"""""
 Configuration for extensions that need to send email messages.
 
 ``host``
     Host name of mail server, e.g. "mail.example.com".
 ``port``
     Optional. Port to connect to on mail server. Default: 25.
 ``tls``
     Optional. Method to enable TLS when connecting to mail server: starttls,
     smtps or none. Default: none.
 ``username``
     Optional. User name for authenticating with the SMTP server.
     Default: none.
 ``password``
     Optional. Password for authenticating with the SMTP server. If not
     specified, interactive sessions will prompt the user for a
     password; non-interactive sessions will fail. Default: none.
 ``local_hostname``
     Optional. It's the hostname that the sender can use to identify
     itself to the MTA.
 
 
 ``patch``
 """""""""
 Settings used when applying patches, for instance through the 'import'
 command or with Mercurial Queues extension.
 
 ``eol``
     When set to 'strict' patch content and patched files end of lines
     are preserved. When set to ``lf`` or ``crlf``, both files end of
     lines are ignored when patching and the result line endings are
     normalized to either LF (Unix) or CRLF (Windows). When set to
     ``auto``, end of lines are again ignored while patching but line
     endings in patched files are normalized to their original setting
     on a per-file basis. If target file does not exist or has no end
     of line, patch line endings are preserved.
     Default: strict.
 
 
 ``paths``
 """""""""
 Assigns symbolic names to repositories. The left side is the
 symbolic name, and the right gives the directory or URL that is the
 location of the repository. Default paths can be declared by setting
 the following entries.
 
 ``default``
     Directory or URL to use when pulling if no source is specified.
     Default is set to repository from which the current repository was
     cloned.
 ``default-push``
     Optional. Directory or URL to use when pushing if no destination
     is specified.
 
 
 ``profiling``
 """""""""""""
 Specifies profiling format and file output. In this section
 description, 'profiling data' stands for the raw data collected
 during profiling, while 'profiling report' stands for a statistical
 text report generated from the profiling data. The profiling is done
 using lsprof.
 
 ``format``
     Profiling format.
     Default: text.
 
     ``text``
       Generate a profiling report. When saving to a file, it should be
       noted that only the report is saved, and the profiling data is
       not kept.
     ``kcachegrind``
       Format profiling data for kcachegrind use: when saving to a
       file, the generated file can directly be loaded into
       kcachegrind.
 ``output``
     File path where profiling data or report should be saved. If the
     file exists, it is replaced. Default: None, data is printed on
     stderr
 
 ``server``
 """"""""""
 Controls generic server settings.
 
 ``uncompressed``
     Whether to allow clients to clone a repository using the
     uncompressed streaming protocol. This transfers about 40% more
     data than a regular clone, but uses less memory and CPU on both
     server and client. Over a LAN (100 Mbps or better) or a very fast
     WAN, an uncompressed streaming clone is a lot faster (~10x) than a
     regular clone. Over most WAN connections (anything slower than
     about 6 Mbps), uncompressed streaming is slower, because of the
     extra data transfer overhead. This mode will also temporarily hold
     the write lock while determining what data to transfer.
     Default is True.
 
 ``validate``
     Whether to validate the completeness of pushed changesets by
     checking that all new file revisions specified in manifests are
     present. Default is False.
 
 ``subpaths``
 """"""""""""
 Defines subrepositories source locations rewriting rules of the form::
 
     <pattern> = <replacement>
 
 Where ``pattern`` is a regular expression matching the source and
 ``replacement`` is the replacement string used to rewrite it. Groups
 can be matched in ``pattern`` and referenced in ``replacements``. For
 instance::
 
     http://server/(.*)-hg/ = http://hg.server/\1/
 
 rewrites ``http://server/foo-hg/`` into ``http://hg.server/foo/``.
 
 All patterns are applied in definition order.
 
 ``trusted``
 """""""""""
 
 Mercurial will not use the settings in the
 ``.hg/hgrc`` file from a repository if it doesn't belong to a trusted
 user or to a trusted group, as various hgrc features allow arbitrary
 commands to be run. This issue is often encountered when configuring
 hooks or extensions for shared repositories or servers. However,
 the web interface will use some safe settings from the ``[web]``
 section.
 
 This section specifies what users and groups are trusted. The
 current user is always trusted. To trust everybody, list a user or a
 group with name ``*``. These settings must be placed in an
 *already-trusted file* to take effect, such as ``$HOME/.hgrc`` of the
 user or service running Mercurial.
 
 ``users``
   Comma-separated list of trusted users.
 ``groups``
   Comma-separated list of trusted groups.
 
 
 ``ui``
 """"""
 
 User interface controls.
 
 ``archivemeta``
     Whether to include the .hg_archival.txt file containing meta data
     (hashes for the repository base and for tip) in archives created
     by the :hg:`archive` command or downloaded via hgweb.
     Default is True.
 ``askusername``
     Whether to prompt for a username when committing. If True, and
     neither ``$HGUSER`` nor ``$EMAIL`` has been specified, then the user will
     be prompted to enter a username. If no username is entered, the
     default ``USER@HOST`` is used instead.
     Default is False.
 ``debug``
     Print debugging information. True or False. Default is False.
 ``editor``
     The editor to use during a commit. Default is ``$EDITOR`` or ``vi``.
 ``fallbackencoding``
     Encoding to try if it's not possible to decode the changelog using
     UTF-8. Default is ISO-8859-1.
 ``ignore``
     A file to read per-user ignore patterns from. This file should be
     in the same format as a repository-wide .hgignore file. This
     option supports hook syntax, so if you want to specify multiple
     ignore files, you can do so by setting something like
     ``ignore.other = ~/.hgignore2``. For details of the ignore file
     format, see the |hgignore(5)|_ man page.
 ``interactive``
     Allow to prompt the user. True or False. Default is True.
 ``logtemplate``
     Template string for commands that print changesets.
 ``merge``
     The conflict resolution program to use during a manual merge.
     For more information on merge tools see :hg:`help merge-tools`.
     For configuring merge tools see the merge-tools_ section.
 ``patch``
     command to use to apply patches. Look for ``gpatch`` or ``patch`` in
     PATH if unset.
 ``quiet``
     Reduce the amount of output printed. True or False. Default is False.
 ``remotecmd``
     remote command to use for clone/push/pull operations. Default is ``hg``.
 ``report_untrusted``
     Warn if a ``.hg/hgrc`` file is ignored due to not being owned by a
     trusted user or group. True or False. Default is True.
 ``slash``
     Display paths using a slash (``/``) as the path separator. This
     only makes a difference on systems where the default path
     separator is not the slash character (e.g. Windows uses the
     backslash character (``\``)).
     Default is False.
 ``ssh``
     command to use for SSH connections. Default is ``ssh``.
 ``strict``
     Require exact command names, instead of allowing unambiguous
     abbreviations. True or False. Default is False.
 ``style``
     Name of style to use for command output.
 ``timeout``
     The timeout used when a lock is held (in seconds), a negative value
     means no timeout. Default is 600.
 ``traceback``
     Mercurial always prints a traceback when an unknown exception
     occurs. Setting this to True will make Mercurial print a traceback
     on all exceptions, even those recognized by Mercurial (such as
     IOError or MemoryError). Default is False.
 ``username``
     The committer of a changeset created when running "commit".
     Typically a person's name and email address, e.g. ``Fred Widget
     <[e-mail]>``. Default is ``$EMAIL`` or ``username@hostname``. If
     the username in hgrc is empty, it has to be specified manually or
     in a different hgrc file (e.g. ``$HOME/.hgrc``, if the admin set
     ``username =``  in the system hgrc). Environment variables in the
     username are expanded.
 ``verbose``
     Increase the amount of output printed. True or False. Default is False.
 
 
 ``web``
 """""""
 
 Web interface configuration. The settings in this section apply to
 both the builtin webserver (started by :hg:`serve`) and the script you
 run through a webserver (``hgweb.cgi`` and the derivatives for FastCGI
 and WSGI).
 
 The Mercurial webserver does no authentication (it does not prompt for
 usernames and passwords to validate *who* users are), but it does do
 authorization (it grants or denies access for *authenticated users*
 based on settings in this section). You must either configure your
 webserver to do authentication for you, or disable the authorization
 checks.
 
 For a quick setup in a trusted environment, e.g., a private LAN, where
 you want it to accept pushes from anybody, you can use the following
 command line::
 
     $ hg --config web.allow_push=* --config web.push_ssl=False serve
 
 Note that this will allow anybody to push anything to the server and
 that this should not be used for public servers.
 
 The full set of options is:
 
 ``accesslog``
     Where to output the access log. Default is stdout.
 ``address``
     Interface address to bind to. Default is all.
 ``allow_archive``
     List of archive format (bz2, gz, zip) allowed for downloading.
     Default is empty.
 ``allowbz2``
     (DEPRECATED) Whether to allow .tar.bz2 downloading of repository
     revisions.
     Default is False.
 ``allowgz``
     (DEPRECATED) Whether to allow .tar.gz downloading of repository
     revisions.
     Default is False.
 ``allowpull``
     Whether to allow pulling from the repository. Default is True.
 ``allow_push``
     Whether to allow pushing to the repository. If empty or not set,
     push is not allowed. If the special value ``*``, any remote user can
     push, including unauthenticated users. Otherwise, the remote user
     must have been authenticated, and the authenticated user name must
     be present in this list. The contents of the allow_push list are
     examined after the deny_push list.
 ``allow_read``
     If the user has not already been denied repository access due to
     the contents of deny_read, this list determines whether to grant
     repository access to the user. If this list is not empty, and the
     user is unauthenticated or not present in the list, then access is
     denied for the user. If the list is empty or not set, then access
     is permitted to all users by default. Setting allow_read to the
     special value ``*`` is equivalent to it not being set (i.e. access
     is permitted to all users). The contents of the allow_read list are
     examined after the deny_read list.
 ``allowzip``
     (DEPRECATED) Whether to allow .zip downloading of repository
     revisions. Default is False. This feature creates temporary files.
 ``baseurl``
     Base URL to use when publishing URLs in other locations, so
     third-party tools like email notification hooks can construct
     URLs. Example: ``http://hgserver/repos/``.
 ``cacerts``
     Path to file containing a list of PEM encoded certificate
     authority certificates. Environment variables and ``~user``
     constructs are expanded in the filename. If specified on the
     client, then it will verify the identity of remote HTTPS servers
     with these certificates. The form must be as follows::
 
         -----BEGIN CERTIFICATE-----
         ... (certificate in base64 PEM encoding) ...
         -----END CERTIFICATE-----
         -----BEGIN CERTIFICATE-----
         ... (certificate in base64 PEM encoding) ...
         -----END CERTIFICATE-----
 
     This feature is only supported when using Python 2.6 or later. If you wish
     to use it with earlier versions of Python, install the backported
     version of the ssl library that is available from
     ``http://pypi.python.org``.
 
     You can use OpenSSL's CA certificate file if your platform has one.
     On most Linux systems this will be ``/etc/ssl/certs/ca-certificates.crt``.
     Otherwise you will have to generate this file manually.
+
+    To disable SSL verification temporarily, specify ``--insecure`` from
+    command line.
 ``contact``
     Name or email address of the person in charge of the repository.
     Defaults to ui.username or ``$EMAIL`` or "unknown" if unset or empty.
 ``deny_push``
     Whether to deny pushing to the repository. If empty or not set,
     push is not denied. If the special value ``*``, all remote users are
     denied push. Otherwise, unauthenticated users are all denied, and
     any authenticated user name present in this list is also denied. The
     contents of the deny_push list are examined before the allow_push list.
 ``deny_read``
     Whether to deny reading/viewing of the repository. If this list is
     not empty, unauthenticated users are all denied, and any
     authenticated user name present in this list is also denied access to
     the repository. If set to the special value ``*``, all remote users
     are denied access (rarely needed ;). If deny_read is empty or not set,
     the determination of repository access depends on the presence and
     content of the allow_read list (see description). If both
     deny_read and allow_read are empty or not set, then access is
     permitted to all users by default. If the repository is being
     served via hgwebdir, denied users will not be able to see it in
     the list of repositories. The contents of the deny_read list have
     priority over (are examined before) the contents of the allow_read
     list.
 ``descend``
     hgwebdir indexes will not descend into subdirectories. Only repositories
     directly in the current path will be shown (other repositories are still
     available from the index corresponding to their containing path).
 ``description``
     Textual description of the repository's purpose or contents.
     Default is "unknown".
 ``encoding``
     Character encoding name. Default is the current locale charset.
     Example: "UTF-8"
 ``errorlog``
     Where to output the error log. Default is stderr.
 ``hidden``
     Whether to hide the repository in the hgwebdir index.
     Default is False.
 ``ipv6``
     Whether to use IPv6. Default is False.
 ``name``
     Repository name to use in the web interface. Default is current
     working directory.
 ``maxchanges``
     Maximum number of changes to list on the changelog. Default is 10.
 ``maxfiles``
     Maximum number of files to list per changeset. Default is 10.
 ``port``
     Port to listen on. Default is 8000.
 ``prefix``
     Prefix path to serve from. Default is '' (server root).
 ``push_ssl``
     Whether to require that inbound pushes be transported over SSL to
     prevent password sniffing. Default is True.
 ``staticurl``
     Base URL to use for static files. If unset, static files (e.g. the
     hgicon.png favicon) will be served by the CGI script itself. Use
     this setting to serve them directly with the HTTP server.
     Example: ``http://hgserver/static/``.
 ``stripes``
     How many lines a "zebra stripe" should span in multiline output.
     Default is 1; set to 0 to disable.
 ``style``
     Which template map style to use.
 ``templates``
     Where to find the HTML templates. Default is install path.
 
 
 Author
 ------
 Bryan O'Sullivan <[e-mail]>.
 
 Mercurial was written by Matt Mackall <[e-mail]>.
 
 See Also
 --------
 |hg(1)|_, |hgignore(5)|_
 
 Copying
 -------
 This manual page is copyright 2005 Bryan O'Sullivan.
 Mercurial is copyright 2005-2010 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

mercurial/commands.py

@@ -1,4535 +1,4537 b''
 # commands.py - command processing for mercurial
 #
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from node import hex, nullid, nullrev, short
 from lock import release
 from i18n import _, gettext
 import os, re, sys, difflib, time, tempfile
 import hg, util, revlog, extensions, copies, error
 import patch, help, mdiff, url, encoding, templatekw, discovery
 import archival, changegroup, cmdutil, sshserver, hbisect, hgweb, hgweb.server
 import merge as mergemod
 import minirst, revset
 import dagparser
 
 # Commands start here, listed alphabetically
 
 def add(ui, repo, *pats, **opts):
     """add the specified files on the next commit
 
     Schedule files to be version controlled and added to the
     repository.
 
     The files will be added to the repository at the next commit. To
     undo an add before that, see :hg:`forget`.
 
     If no names are given, add all files to the repository.
 
     .. container:: verbose
 
        An example showing how new (unknown) files are added
        automatically by :hg:`add`::
 
          $ ls
          foo.c
          $ hg status
          ? foo.c
          $ hg add
          adding foo.c
          $ hg status
          A foo.c
 
     Returns 0 if all files are successfully added.
     """
 
     m = cmdutil.match(repo, pats, opts)
     rejected = cmdutil.add(ui, repo, m, opts.get('dry_run'),
                            opts.get('subrepos'), prefix="")
     return rejected and 1 or 0
 
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files
 
     Add all new files and remove all missing files from the
     repository.
 
     New files are ignored if they match any of the patterns in
     .hgignore. As with add, these changes take effect at the next
     commit.
 
     Use the -s/--similarity option to detect renamed files. With a
     parameter greater than 0, this compares every removed file with
     every added file and records those similar enough as renames. This
     option takes a percentage between 0 (disabled) and 100 (files must
     be identical) as its parameter. Detecting renamed files this way
     can be expensive. After using this option, :hg:`status -C` can be
     used to check which files were identified as moved or renamed.
 
     Returns 0 if all files are successfully added.
     """
     try:
         sim = float(opts.get('similarity') or 100)
     except ValueError:
         raise util.Abort(_('similarity must be a number'))
     if sim < 0 or sim > 100:
         raise util.Abort(_('similarity must be between 0 and 100'))
     return cmdutil.addremove(repo, pats, opts, similarity=sim / 100.0)
 
 def annotate(ui, repo, *pats, **opts):
     """show changeset information by line for each file
 
     List changes in files, showing the revision id responsible for
     each line
 
     This command is useful for discovering when a change was made and
     by whom.
 
     Without the -a/--text option, annotate will avoid processing files
     it detects as binary. With -a, annotate will annotate the file
     anyway, although the results will probably be neither useful
     nor desirable.
 
     Returns 0 on success.
     """
     if opts.get('follow'):
         # --follow is deprecated and now just an alias for -f/--file
         # to mimic the behavior of Mercurial before version 1.5
         opts['file'] = 1
 
     datefunc = ui.quiet and util.shortdate or util.datestr
     getdate = util.cachefunc(lambda x: datefunc(x[0].date()))
 
     if not pats:
         raise util.Abort(_('at least one filename or pattern is required'))
 
     opmap = [('user', lambda x: ui.shortuser(x[0].user())),
              ('number', lambda x: str(x[0].rev())),
              ('changeset', lambda x: short(x[0].node())),
              ('date', getdate),
              ('file', lambda x: x[0].path()),
             ]
 
     if (not opts.get('user') and not opts.get('changeset')
         and not opts.get('date') and not opts.get('file')):
         opts['number'] = 1
 
     linenumber = opts.get('line_number') is not None
     if linenumber and (not opts.get('changeset')) and (not opts.get('number')):
         raise util.Abort(_('at least one of -n/-c is required for -l'))
 
     funcmap = [func for op, func in opmap if opts.get(op)]
     if linenumber:
         lastfunc = funcmap[-1]
         funcmap[-1] = lambda x: "%s:%s" % (lastfunc(x), x[1])
 
     ctx = cmdutil.revsingle(repo, opts.get('rev'))
     m = cmdutil.match(repo, pats, opts)
     follow = not opts.get('no_follow')
     for abs in ctx.walk(m):
         fctx = ctx[abs]
         if not opts.get('text') and util.binary(fctx.data()):
             ui.write(_("%s: binary file\n") % ((pats and m.rel(abs)) or abs))
             continue
 
         lines = fctx.annotate(follow=follow, linenumber=linenumber)
         pieces = []
 
         for f in funcmap:
             l = [f(n) for n, dummy in lines]
             if l:
                 sized = [(x, encoding.colwidth(x)) for x in l]
                 ml = max([w for x, w in sized])
                 pieces.append(["%s%s" % (' ' * (ml - w), x) for x, w in sized])
 
         if pieces:
             for p, l in zip(zip(*pieces), lines):
                 ui.write("%s: %s" % (" ".join(p), l[1]))
 
 def archive(ui, repo, dest, **opts):
     '''create an unversioned archive of a repository revision
 
     By default, the revision used is the parent of the working
     directory; use -r/--rev to specify a different revision.
 
     The archive type is automatically detected based on file
     extension (or override using -t/--type).
 
     Valid types are:
 
     :``files``: a directory full of files (default)
     :``tar``:   tar archive, uncompressed
     :``tbz2``:  tar archive, compressed using bzip2
     :``tgz``:   tar archive, compressed using gzip
     :``uzip``:  zip archive, uncompressed
     :``zip``:   zip archive, compressed using deflate
 
     The exact name of the destination archive or directory is given
     using a format string; see :hg:`help export` for details.
 
     Each member added to an archive file has a directory prefix
     prepended. Use -p/--prefix to specify a format string for the
     prefix. The default is the basename of the archive, with suffixes
     removed.
 
     Returns 0 on success.
     '''
 
     ctx = cmdutil.revsingle(repo, opts.get('rev'))
     if not ctx:
         raise util.Abort(_('no working directory: please specify a revision'))
     node = ctx.node()
     dest = cmdutil.make_filename(repo, dest, node)
     if os.path.realpath(dest) == repo.root:
         raise util.Abort(_('repository root cannot be destination'))
 
     kind = opts.get('type') or archival.guesskind(dest) or 'files'
     prefix = opts.get('prefix')
 
     if dest == '-':
         if kind == 'files':
             raise util.Abort(_('cannot archive plain files to stdout'))
         dest = sys.stdout
         if not prefix:
             prefix = os.path.basename(repo.root) + '-%h'
 
     prefix = cmdutil.make_filename(repo, prefix, node)
     matchfn = cmdutil.match(repo, [], opts)
     archival.archive(repo, dest, node, kind, not opts.get('no_decode'),
                      matchfn, prefix, subrepos=opts.get('subrepos'))
 
 def backout(ui, repo, node=None, rev=None, **opts):
     '''reverse effect of earlier changeset
 
     The backout command merges the reverse effect of the reverted
     changeset into the working directory.
 
     With the --merge option, it first commits the reverted changes
     as a new changeset. This new changeset is a child of the reverted
     changeset.
     The --merge option remembers the parent of the working directory
     before starting the backout, then merges the new head with that
     changeset afterwards.
     This will result in an explicit merge in the history.
 
     If you backout a changeset other than the original parent of the
     working directory, the result of this merge is not committed,
     as with a normal merge. Otherwise, no merge is needed and the
     commit is automatic.
 
     Note that the default behavior (without --merge) has changed in
     version 1.7. To restore the previous default behavior, use
     :hg:`backout --merge` and then :hg:`update --clean .` to get rid of
     the ongoing merge.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Returns 0 on success.
     '''
     if rev and node:
         raise util.Abort(_("please specify just one revision"))
 
     if not rev:
         rev = node
 
     if not rev:
         raise util.Abort(_("please specify a revision to backout"))
 
     date = opts.get('date')
     if date:
         opts['date'] = util.parsedate(date)
 
     cmdutil.bail_if_changed(repo)
     node = cmdutil.revsingle(repo, rev).node()
 
     op1, op2 = repo.dirstate.parents()
     a = repo.changelog.ancestor(op1, node)
     if a != node:
         raise util.Abort(_('cannot backout change on a different branch'))
 
     p1, p2 = repo.changelog.parents(node)
     if p1 == nullid:
         raise util.Abort(_('cannot backout a change with no parents'))
     if p2 != nullid:
         if not opts.get('parent'):
             raise util.Abort(_('cannot backout a merge changeset without '
                                '--parent'))
         p = repo.lookup(opts['parent'])
         if p not in (p1, p2):
             raise util.Abort(_('%s is not a parent of %s') %
                              (short(p), short(node)))
         parent = p
     else:
         if opts.get('parent'):
             raise util.Abort(_('cannot use --parent on non-merge changeset'))
         parent = p1
 
     # the backout should appear on the same branch
     branch = repo.dirstate.branch()
     hg.clean(repo, node, show_stats=False)
     repo.dirstate.setbranch(branch)
     revert_opts = opts.copy()
     revert_opts['date'] = None
     revert_opts['all'] = True
     revert_opts['rev'] = hex(parent)
     revert_opts['no_backup'] = None
     revert(ui, repo, **revert_opts)
     if not opts.get('merge') and op1 != node:
         try:
             ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
             return hg.update(repo, op1)
         finally:
             ui.setconfig('ui', 'forcemerge', '')
 
     commit_opts = opts.copy()
     commit_opts['addremove'] = False
     if not commit_opts['message'] and not commit_opts['logfile']:
         # we don't translate commit messages
         commit_opts['message'] = "Backed out changeset %s" % short(node)
         commit_opts['force_editor'] = True
     commit(ui, repo, **commit_opts)
     def nice(node):
         return '%d:%s' % (repo.changelog.rev(node), short(node))
     ui.status(_('changeset %s backs out changeset %s\n') %
               (nice(repo.changelog.tip()), nice(node)))
     if opts.get('merge') and op1 != node:
         hg.clean(repo, op1, show_stats=False)
         ui.status(_('merging with changeset %s\n')
                   % nice(repo.changelog.tip()))
         try:
             ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
             return hg.merge(repo, hex(repo.changelog.tip()))
         finally:
             ui.setconfig('ui', 'forcemerge', '')
     return 0
 
 def bisect(ui, repo, rev=None, extra=None, command=None,
                reset=None, good=None, bad=None, skip=None, noupdate=None):
     """subdivision search of changesets
 
     This command helps to find changesets which introduce problems. To
     use, mark the earliest changeset you know exhibits the problem as
     bad, then mark the latest changeset which is free from the problem
     as good. Bisect will update your working directory to a revision
     for testing (unless the -U/--noupdate option is specified). Once
     you have performed tests, mark the working directory as good or
     bad, and bisect will either update to another candidate changeset
     or announce that it has found the bad revision.
 
     As a shortcut, you can also use the revision argument to mark a
     revision as good or bad without checking it out first.
 
     If you supply a command, it will be used for automatic bisection.
     Its exit status will be used to mark revisions as good or bad:
     status 0 means good, 125 means to skip the revision, 127
     (command not found) will abort the bisection, and any other
     non-zero exit status means the revision is bad.
 
     Returns 0 on success.
     """
     def print_result(nodes, good):
         displayer = cmdutil.show_changeset(ui, repo, {})
         if len(nodes) == 1:
             # narrowed it down to a single revision
             if good:
                 ui.write(_("The first good revision is:\n"))
             else:
                 ui.write(_("The first bad revision is:\n"))
             displayer.show(repo[nodes[0]])
             parents = repo[nodes[0]].parents()
             if len(parents) > 1:
                 side = good and state['bad'] or state['good']
                 num = len(set(i.node() for i in parents) & set(side))
                 if num == 1:
                     common = parents[0].ancestor(parents[1])
                     ui.write(_('Not all ancestors of this changeset have been'
                                ' checked.\nTo check the other ancestors, start'
                                ' from the common ancestor, %s.\n' % common))
         else:
             # multiple possible revisions
             if good:
                 ui.write(_("Due to skipped revisions, the first "
                         "good revision could be any of:\n"))
             else:
                 ui.write(_("Due to skipped revisions, the first "
                         "bad revision could be any of:\n"))
             for n in nodes:
                 displayer.show(repo[n])
         displayer.close()
 
     def check_state(state, interactive=True):
         if not state['good'] or not state['bad']:
             if (good or bad or skip or reset) and interactive:
                 return
             if not state['good']:
                 raise util.Abort(_('cannot bisect (no known good revisions)'))
             else:
                 raise util.Abort(_('cannot bisect (no known bad revisions)'))
         return True
 
     # backward compatibility
     if rev in "good bad reset init".split():
         ui.warn(_("(use of 'hg bisect <cmd>' is deprecated)\n"))
         cmd, rev, extra = rev, extra, None
         if cmd == "good":
             good = True
         elif cmd == "bad":
             bad = True
         else:
             reset = True
     elif extra or good + bad + skip + reset + bool(command) > 1:
         raise util.Abort(_('incompatible arguments'))
 
     if reset:
         p = repo.join("bisect.state")
         if os.path.exists(p):
             os.unlink(p)
         return
 
     state = hbisect.load_state(repo)
 
     if command:
         changesets = 1
         try:
             while changesets:
                 # update state
                 status = util.system(command)
                 if status == 125:
                     transition = "skip"
                 elif status == 0:
                     transition = "good"
                 # status < 0 means process was killed
                 elif status == 127:
                     raise util.Abort(_("failed to execute %s") % command)
                 elif status < 0:
                     raise util.Abort(_("%s killed") % command)
                 else:
                     transition = "bad"
                 ctx = cmdutil.revsingle(repo, rev)
                 rev = None # clear for future iterations
                 state[transition].append(ctx.node())
                 ui.status(_('Changeset %d:%s: %s\n') % (ctx, ctx, transition))
                 check_state(state, interactive=False)
                 # bisect
                 nodes, changesets, good = hbisect.bisect(repo.changelog, state)
                 # update to next check
                 cmdutil.bail_if_changed(repo)
                 hg.clean(repo, nodes[0], show_stats=False)
         finally:
             hbisect.save_state(repo, state)
         print_result(nodes, good)
         return
 
     # update state
 
     if rev:
         nodes = [repo.lookup(i) for i in cmdutil.revrange(repo, [rev])]
     else:
         nodes = [repo.lookup('.')]
 
     if good or bad or skip:
         if good:
             state['good'] += nodes
         elif bad:
             state['bad'] += nodes
         elif skip:
             state['skip'] += nodes
         hbisect.save_state(repo, state)
 
     if not check_state(state):
         return
 
     # actually bisect
     nodes, changesets, good = hbisect.bisect(repo.changelog, state)
     if changesets == 0:
         print_result(nodes, good)
     else:
         assert len(nodes) == 1 # only a single node can be tested next
         node = nodes[0]
         # compute the approximate number of remaining tests
         tests, size = 0, 2
         while size <= changesets:
             tests, size = tests + 1, size * 2
         rev = repo.changelog.rev(node)
         ui.write(_("Testing changeset %d:%s "
                    "(%d changesets remaining, ~%d tests)\n")
                  % (rev, short(node), changesets, tests))
         if not noupdate:
             cmdutil.bail_if_changed(repo)
             return hg.clean(repo, node)
 
 def branch(ui, repo, label=None, **opts):
     """set or show the current branch name
 
     With no argument, show the current branch name. With one argument,
     set the working directory branch name (the branch will not exist
     in the repository until the next commit). Standard practice
     recommends that primary development take place on the 'default'
     branch.
 
     Unless -f/--force is specified, branch will not let you set a
     branch name that already exists, even if it's inactive.
 
     Use -C/--clean to reset the working directory branch to that of
     the parent of the working directory, negating a previous branch
     change.
 
     Use the command :hg:`update` to switch to an existing branch. Use
     :hg:`commit --close-branch` to mark this branch as closed.
 
     Returns 0 on success.
     """
 
     if opts.get('clean'):
         label = repo[None].parents()[0].branch()
         repo.dirstate.setbranch(label)
         ui.status(_('reset working directory to branch %s\n') % label)
     elif label:
         if not opts.get('force') and label in repo.branchtags():
             if label not in [p.branch() for p in repo.parents()]:
                 raise util.Abort(_('a branch of the same name already exists'
                                    " (use 'hg update' to switch to it)"))
         repo.dirstate.setbranch(label)
         ui.status(_('marked working directory as branch %s\n') % label)
     else:
         ui.write("%s\n" % repo.dirstate.branch())
 
 def branches(ui, repo, active=False, closed=False):
     """list repository named branches
 
     List the repository's named branches, indicating which ones are
     inactive. If -c/--closed is specified, also list branches which have
     been marked closed (see :hg:`commit --close-branch`).
 
     If -a/--active is specified, only show active branches. A branch
     is considered active if it contains repository heads.
 
     Use the command :hg:`update` to switch to an existing branch.
 
     Returns 0.
     """
 
     hexfunc = ui.debugflag and hex or short
     activebranches = [repo[n].branch() for n in repo.heads()]
     def testactive(tag, node):
         realhead = tag in activebranches
         open = node in repo.branchheads(tag, closed=False)
         return realhead and open
     branches = sorted([(testactive(tag, node), repo.changelog.rev(node), tag)
                           for tag, node in repo.branchtags().items()],
                       reverse=True)
 
     for isactive, node, tag in branches:
         if (not active) or isactive:
             if ui.quiet:
                 ui.write("%s\n" % tag)
             else:
                 hn = repo.lookup(node)
                 if isactive:
                     label = 'branches.active'
                     notice = ''
                 elif hn not in repo.branchheads(tag, closed=False):
                     if not closed:
                         continue
                     label = 'branches.closed'
                     notice = _(' (closed)')
                 else:
                     label = 'branches.inactive'
                     notice = _(' (inactive)')
                 if tag == repo.dirstate.branch():
                     label = 'branches.current'
                 rev = str(node).rjust(31 - encoding.colwidth(tag))
                 rev = ui.label('%s:%s' % (rev, hexfunc(hn)), 'log.changeset')
                 tag = ui.label(tag, label)
                 ui.write("%s %s%s\n" % (tag, rev, notice))
 
 def bundle(ui, repo, fname, dest=None, **opts):
     """create a changegroup file
 
     Generate a compressed changegroup file collecting changesets not
     known to be in another repository.
 
     If you omit the destination repository, then hg assumes the
     destination will have all the nodes you specify with --base
     parameters. To create a bundle containing all changesets, use
     -a/--all (or --base null).
 
     You can change compression method with the -t/--type option.
     The available compression methods are: none, bzip2, and
     gzip (by default, bundles are compressed using bzip2).
 
     The bundle file can then be transferred using conventional means
     and applied to another repository with the unbundle or pull
     command. This is useful when direct push and pull are not
     available or when exporting an entire repository is undesirable.
 
     Applying bundles preserves all changeset contents including
     permissions, copy/rename information, and revision history.
 
     Returns 0 on success, 1 if no changes found.
     """
     revs = None
     if 'rev' in opts:
         revs = cmdutil.revrange(repo, opts['rev'])
 
     if opts.get('all'):
         base = ['null']
     else:
         base = cmdutil.revrange(repo, opts.get('base'))
     if base:
         if dest:
             raise util.Abort(_("--base is incompatible with specifying "
                                "a destination"))
         base = [repo.lookup(rev) for rev in base]
         # create the right base
         # XXX: nodesbetween / changegroup* should be "fixed" instead
         o = []
         has = set((nullid,))
         for n in base:
             has.update(repo.changelog.reachable(n))
         if revs:
             revs = [repo.lookup(rev) for rev in revs]
             visit = revs[:]
             has.difference_update(visit)
         else:
             visit = repo.changelog.heads()
         seen = {}
         while visit:
             n = visit.pop(0)
             parents = [p for p in repo.changelog.parents(n) if p not in has]
             if len(parents) == 0:
                 if n not in has:
                     o.append(n)
             else:
                 for p in parents:
                     if p not in seen:
                         seen[p] = 1
                         visit.append(p)
     else:
         dest = ui.expandpath(dest or 'default-push', dest or 'default')
         dest, branches = hg.parseurl(dest, opts.get('branch'))
         other = hg.repository(hg.remoteui(repo, opts), dest)
         revs, checkout = hg.addbranchrevs(repo, other, branches, revs)
         if revs:
             revs = [repo.lookup(rev) for rev in revs]
         o = discovery.findoutgoing(repo, other, force=opts.get('force'))
 
     if not o:
         ui.status(_("no changes found\n"))
         return 1
 
     if revs:
         cg = repo.changegroupsubset(o, revs, 'bundle')
     else:
         cg = repo.changegroup(o, 'bundle')
 
     bundletype = opts.get('type', 'bzip2').lower()
     btypes = {'none': 'HG10UN', 'bzip2': 'HG10BZ', 'gzip': 'HG10GZ'}
     bundletype = btypes.get(bundletype)
     if bundletype not in changegroup.bundletypes:
         raise util.Abort(_('unknown bundle type specified with --type'))
 
     changegroup.writebundle(cg, fname, bundletype)
 
 def cat(ui, repo, file1, *pats, **opts):
     """output the current or given revision of files
 
     Print the specified files as they were at the given revision. If
     no revision is given, the parent of the working directory is used,
     or tip if no revision is checked out.
 
     Output may be to a file, in which case the name of the file is
     given using a format string. The formatting rules are the same as
     for the export command, with the following additions:
 
     :``%s``: basename of file being printed
     :``%d``: dirname of file being printed, or '.' if in repository root
     :``%p``: root-relative path name of file being printed
 
     Returns 0 on success.
     """
     ctx = cmdutil.revsingle(repo, opts.get('rev'))
     err = 1
     m = cmdutil.match(repo, (file1,) + pats, opts)
     for abs in ctx.walk(m):
         fp = cmdutil.make_file(repo, opts.get('output'), ctx.node(), pathname=abs)
         data = ctx[abs].data()
         if opts.get('decode'):
             data = repo.wwritedata(abs, data)
         fp.write(data)
         err = 0
     return err
 
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository
 
     Create a copy of an existing repository in a new directory.
 
     If no destination directory name is specified, it defaults to the
     basename of the source.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls.
 
     See :hg:`help urls` for valid source format details.
 
     It is possible to specify an ``ssh://`` URL as the destination, but no
     .hg/hgrc and working directory will be created on the remote side.
     Please see :hg:`help urls` for important details about ``ssh://`` URLs.
 
     A set of changesets (tags, or branch names) to pull may be specified
     by listing each changeset (tag, or branch name) with -r/--rev.
     If -r/--rev is used, the cloned repository will contain only a subset
     of the changesets of the source repository. Only the set of changesets
     defined by all -r/--rev options (including all their ancestors)
     will be pulled into the destination repository.
     No subsequent changesets (including subsequent tags) will be present
     in the destination.
 
     Using -r/--rev (or 'clone src#rev dest') implies --pull, even for
     local source repositories.
 
     For efficiency, hardlinks are used for cloning whenever the source
     and destination are on the same filesystem (note this applies only
     to the repository data, not to the working directory). Some
     filesystems, such as AFS, implement hardlinking incorrectly, but
     do not report errors. In these cases, use the --pull option to
     avoid hardlinking.
 
     In some cases, you can clone repositories and the working directory
     using full hardlinks with ::
 
       $ cp -al REPO REPOCLONE
 
     This is the fastest way to clone, but it is not always safe. The
     operation is not atomic (making sure REPO is not modified during
     the operation is up to you) and you have to make sure your editor
     breaks hardlinks (Emacs and most Linux Kernel tools do so). Also,
     this is not compatible with certain extensions that place their
     metadata under the .hg directory, such as mq.
 
     Mercurial will update the working directory to the first applicable
     revision from this list:
 
     a) null if -U or the source repository has no changesets
     b) if -u . and the source repository is local, the first parent of
        the source repository's working directory
     c) the changeset specified with -u (if a branch name, this means the
        latest head of that branch)
     d) the changeset specified with -r
     e) the tipmost head specified with -b
     f) the tipmost head specified with the url#branch source syntax
     g) the tipmost head of the default branch
     h) tip
 
     Returns 0 on success.
     """
     if opts.get('noupdate') and opts.get('updaterev'):
         raise util.Abort(_("cannot specify both --noupdate and --updaterev"))
 
     r = hg.clone(hg.remoteui(ui, opts), source, dest,
                  pull=opts.get('pull'),
                  stream=opts.get('uncompressed'),
                  rev=opts.get('rev'),
                  update=opts.get('updaterev') or not opts.get('noupdate'),
                  branch=opts.get('branch'))
 
     return r is None
 
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
 
     Commit changes to the given files into the repository. Unlike a
     centralized SCM, this operation is a local operation. See
     :hg:`push` for a way to actively distribute your changes.
 
     If a list of files is omitted, all changes reported by :hg:`status`
     will be committed.
 
     If you are committing the result of a merge, do not provide any
     filenames or -I/-X filters.
 
     If no commit message is specified, Mercurial starts your
     configured editor where you can enter a message. In case your
     commit fails, you will find a backup of your message in
     ``.hg/last-message.txt``.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Returns 0 on success, 1 if nothing changed.
     """
     extra = {}
     if opts.get('close_branch'):
         if repo['.'].node() not in repo.branchheads():
             # The topo heads set is included in the branch heads set of the
             # current branch, so it's sufficient to test branchheads
             raise util.Abort(_('can only close branch heads'))
         extra['close'] = 1
     e = cmdutil.commiteditor
     if opts.get('force_editor'):
         e = cmdutil.commitforceeditor
 
     def commitfunc(ui, repo, message, match, opts):
         return repo.commit(message, opts.get('user'), opts.get('date'), match,
                            editor=e, extra=extra)
 
     branch = repo[None].branch()
     bheads = repo.branchheads(branch)
 
     node = cmdutil.commit(ui, repo, commitfunc, pats, opts)
     if not node:
         ui.status(_("nothing changed\n"))
         return 1
 
     ctx = repo[node]
     parents = ctx.parents()
 
     if bheads and not [x for x in parents
                        if x.node() in bheads and x.branch() == branch]:
         ui.status(_('created new head\n'))
         # The message is not printed for initial roots. For the other
         # changesets, it is printed in the following situations:
         #
         # Par column: for the 2 parents with ...
         #   N: null or no parent
         #   B: parent is on another named branch
         #   C: parent is a regular non head changeset
         #   H: parent was a branch head of the current branch
         # Msg column: whether we print "created new head" message
         # In the following, it is assumed that there already exists some
         # initial branch heads of the current branch, otherwise nothing is
         # printed anyway.
         #
         # Par Msg Comment
         # NN   y  additional topo root
         #
         # BN   y  additional branch root
         # CN   y  additional topo head
         # HN   n  usual case
         #
         # BB   y  weird additional branch root
         # CB   y  branch merge
         # HB   n  merge with named branch
         #
         # CC   y  additional head from merge
         # CH   n  merge with a head
         #
         # HH   n  head merge: head count decreases
 
     if not opts.get('close_branch'):
         for r in parents:
             if r.extra().get('close') and r.branch() == branch:
                 ui.status(_('reopening closed branch head %d\n') % r)
 
     if ui.debugflag:
         ui.write(_('committed changeset %d:%s\n') % (int(ctx), ctx.hex()))
     elif ui.verbose:
         ui.write(_('committed changeset %d:%s\n') % (int(ctx), ctx))
 
 def copy(ui, repo, *pats, **opts):
     """mark files as copied for the next commit
 
     Mark dest as having copies of source files. If dest is a
     directory, copies are put in that directory. If dest is a file,
     the source must be a single file.
 
     By default, this command copies the contents of files as they
     exist in the working directory. If invoked with -A/--after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect with the next commit. To undo a copy
     before that, see :hg:`revert`.
 
     Returns 0 on success, 1 if errors are encountered.
     """
     wlock = repo.wlock(False)
     try:
         return cmdutil.copy(ui, repo, pats, opts)
     finally:
         wlock.release()
 
 def debugancestor(ui, repo, *args):
     """find the ancestor revision of two revisions in a given index"""
     if len(args) == 3:
         index, rev1, rev2 = args
         r = revlog.revlog(util.opener(os.getcwd(), audit=False), index)
         lookup = r.lookup
     elif len(args) == 2:
         if not repo:
             raise util.Abort(_("there is no Mercurial repository here "
                                "(.hg not found)"))
         rev1, rev2 = args
         r = repo.changelog
         lookup = repo.lookup
     else:
         raise util.Abort(_('either two or three arguments required'))
     a = r.ancestor(lookup(rev1), lookup(rev2))
     ui.write("%d:%s\n" % (r.rev(a), hex(a)))
 
 def debugbuilddag(ui, repo, text,
                   mergeable_file=False,
                   appended_file=False,
                   overwritten_file=False,
                   new_file=False):
     """builds a repo with a given dag from scratch in the current empty repo
 
     Elements:
 
      - "+n" is a linear run of n nodes based on the current default parent
      - "." is a single node based on the current default parent
      - "$" resets the default parent to null (implied at the start);
            otherwise the default parent is always the last node created
      - "<p" sets the default parent to the backref p
      - "*p" is a fork at parent p, which is a backref
      - "*p1/p2" is a merge of parents p1 and p2, which are backrefs
      - "/p2" is a merge of the preceding node and p2
      - ":tag" defines a local tag for the preceding node
      - "@branch" sets the named branch for subsequent nodes
      - "!command" runs the command using your shell
      - "!!my command\\n" is like "!", but to the end of the line
      - "#...\\n" is a comment up to the end of the line
 
     Whitespace between the above elements is ignored.
 
     A backref is either
 
      - a number n, which references the node curr-n, where curr is the current
        node, or
      - the name of a local tag you placed earlier using ":tag", or
      - empty to denote the default parent.
 
     All string valued-elements are either strictly alphanumeric, or must
     be enclosed in double quotes ("..."), with "\\" as escape character.
 
     Note that the --overwritten-file and --appended-file options imply the
     use of "HGMERGE=internal:local" during DAG buildup.
     """
 
     if not (mergeable_file or appended_file or overwritten_file or new_file):
         raise util.Abort(_('need at least one of -m, -a, -o, -n'))
 
     if len(repo.changelog) > 0:
         raise util.Abort(_('repository is not empty'))
 
     if overwritten_file or appended_file:
         # we don't want to fail in merges during buildup
         os.environ['HGMERGE'] = 'internal:local'
 
     def writefile(fname, text, fmode="wb"):
         f = open(fname, fmode)
         try:
             f.write(text)
         finally:
             f.close()
 
     if mergeable_file:
         linesperrev = 2
         # determine number of revs in DAG
         n = 0
         for type, data in dagparser.parsedag(text):
             if type == 'n':
                 n += 1
         # make a file with k lines per rev
         writefile("mf", "\n".join(str(i) for i in xrange(0, n * linesperrev))
                   + "\n")
 
     at = -1
     atbranch = 'default'
     for type, data in dagparser.parsedag(text):
         if type == 'n':
             ui.status('node %s\n' % str(data))
             id, ps = data
             p1 = ps[0]
             if p1 != at:
                 update(ui, repo, node=str(p1), clean=True)
                 at = p1
             if repo.dirstate.branch() != atbranch:
                 branch(ui, repo, atbranch, force=True)
             if len(ps) > 1:
                 p2 = ps[1]
                 merge(ui, repo, node=p2)
 
             if mergeable_file:
                 f = open("mf", "rb+")
                 try:
                     lines = f.read().split("\n")
                     lines[id * linesperrev] += " r%i" % id
                     f.seek(0)
                     f.write("\n".join(lines))
                 finally:
                     f.close()
 
             if appended_file:
                 writefile("af", "r%i\n" % id, "ab")
 
             if overwritten_file:
                 writefile("of", "r%i\n" % id)
 
             if new_file:
                 writefile("nf%i" % id, "r%i\n" % id)
 
             commit(ui, repo, addremove=True, message="r%i" % id, date=(id, 0))
             at = id
         elif type == 'l':
             id, name = data
             ui.status('tag %s\n' % name)
             tag(ui, repo, name, local=True)
         elif type == 'a':
             ui.status('branch %s\n' % data)
             atbranch = data
         elif type in 'cC':
             r = util.system(data, cwd=repo.root)
             if r:
                 desc, r = util.explain_exit(r)
                 raise util.Abort(_('%s command %s') % (data, desc))
 
 def debugcommands(ui, cmd='', *args):
     """list all available commands and options"""
     for cmd, vals in sorted(table.iteritems()):
         cmd = cmd.split('|')[0].strip('^')
         opts = ', '.join([i[1] for i in vals[1]])
         ui.write('%s: %s\n' % (cmd, opts))
 
 def debugcomplete(ui, cmd='', **opts):
     """returns the completion list associated with the given command"""
 
     if opts.get('options'):
         options = []
         otables = [globalopts]
         if cmd:
             aliases, entry = cmdutil.findcmd(cmd, table, False)
             otables.append(entry[1])
         for t in otables:
             for o in t:
                 if "(DEPRECATED)" in o[3]:
                     continue
                 if o[0]:
                     options.append('-%s' % o[0])
                 options.append('--%s' % o[1])
         ui.write("%s\n" % "\n".join(options))
         return
 
     cmdlist = cmdutil.findpossible(cmd, table)
     if ui.verbose:
         cmdlist = [' '.join(c[0]) for c in cmdlist.values()]
     ui.write("%s\n" % "\n".join(sorted(cmdlist)))
 
 def debugfsinfo(ui, path = "."):
     """show information detected about current filesystem"""
     open('.debugfsinfo', 'w').write('')
     ui.write('exec: %s\n' % (util.checkexec(path) and 'yes' or 'no'))
     ui.write('symlink: %s\n' % (util.checklink(path) and 'yes' or 'no'))
     ui.write('case-sensitive: %s\n' % (util.checkcase('.debugfsinfo')
                                 and 'yes' or 'no'))
     os.unlink('.debugfsinfo')
 
 def debugrebuildstate(ui, repo, rev="tip"):
     """rebuild the dirstate as it would look like for the given revision"""
     ctx = cmdutil.revsingle(repo, rev)
     wlock = repo.wlock()
     try:
         repo.dirstate.rebuild(ctx.node(), ctx.manifest())
     finally:
         wlock.release()
 
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     parent1, parent2 = repo.dirstate.parents()
     m1 = repo[parent1].manifest()
     m2 = repo[parent2].manifest()
     errors = 0
     for f in repo.dirstate:
         state = repo.dirstate[f]
         if state in "nr" and f not in m1:
             ui.warn(_("%s in state %s, but not in manifest1\n") % (f, state))
             errors += 1
         if state in "a" and f in m1:
             ui.warn(_("%s in state %s, but also in manifest1\n") % (f, state))
             errors += 1
         if state in "m" and f not in m1 and f not in m2:
             ui.warn(_("%s in state %s, but not in either manifest\n") %
                     (f, state))
             errors += 1
     for f in m1:
         state = repo.dirstate[f]
         if state not in "nrm":
             ui.warn(_("%s in manifest1, but listed as state %s") % (f, state))
             errors += 1
     if errors:
         error = _(".hg/dirstate inconsistent with current parent's manifest")
         raise util.Abort(error)
 
 def showconfig(ui, repo, *values, **opts):
     """show combined config settings from all hgrc files
 
     With no arguments, print names and values of all config items.
 
     With one argument of the form section.name, print just the value
     of that config item.
 
     With multiple arguments, print names and values of all config
     items with matching section names.
 
     With --debug, the source (filename and line number) is printed
     for each config item.
 
     Returns 0 on success.
     """
 
     for f in util.rcpath():
         ui.debug(_('read config from: %s\n') % f)
     untrusted = bool(opts.get('untrusted'))
     if values:
         sections = [v for v in values if '.' not in v]
         items = [v for v in values if '.' in v]
         if len(items) > 1 or items and sections:
             raise util.Abort(_('only one config item permitted'))
     for section, name, value in ui.walkconfig(untrusted=untrusted):
         sectname = section + '.' + name
         if values:
             for v in values:
                 if v == section:
                     ui.debug('%s: ' %
                              ui.configsource(section, name, untrusted))
                     ui.write('%s=%s\n' % (sectname, value))
                 elif v == sectname:
                     ui.debug('%s: ' %
                              ui.configsource(section, name, untrusted))
                     ui.write(value, '\n')
         else:
             ui.debug('%s: ' %
                      ui.configsource(section, name, untrusted))
             ui.write('%s=%s\n' % (sectname, value))
 
 def debugpushkey(ui, repopath, namespace, *keyinfo):
     '''access the pushkey key/value protocol
 
     With two args, list the keys in the given namespace.
 
     With five args, set a key to new if it currently is set to old.
     Reports success or failure.
     '''
 
     target = hg.repository(ui, repopath)
     if keyinfo:
         key, old, new = keyinfo
         r = target.pushkey(namespace, key, old, new)
         ui.status(str(r) + '\n')
         return not r
     else:
         for k, v in target.listkeys(namespace).iteritems():
             ui.write("%s\t%s\n" % (k.encode('string-escape'),
                                    v.encode('string-escape')))
 
 def debugrevspec(ui, repo, expr):
     '''parse and apply a revision specification'''
     if ui.verbose:
         tree = revset.parse(expr)
         ui.note(tree, "\n")
     func = revset.match(expr)
     for c in func(repo, range(len(repo))):
         ui.write("%s\n" % c)
 
 def debugsetparents(ui, repo, rev1, rev2=None):
     """manually set the parents of the current working directory
 
     This is useful for writing repository conversion tools, but should
     be used with care.
 
     Returns 0 on success.
     """
 
     r1 = cmdutil.revsingle(repo, rev1).node()
     r2 = cmdutil.revsingle(repo, rev2, 'null').node()
 
     wlock = repo.wlock()
     try:
         repo.dirstate.setparents(r1, r2)
     finally:
         wlock.release()
 
 def debugstate(ui, repo, nodates=None):
     """show the contents of the current dirstate"""
     timestr = ""
     showdate = not nodates
     for file_, ent in sorted(repo.dirstate._map.iteritems()):
         if showdate:
             if ent[3] == -1:
                 # Pad or slice to locale representation
                 locale_len = len(time.strftime("%Y-%m-%d %H:%M:%S ",
                                                time.localtime(0)))
                 timestr = 'unset'
                 timestr = (timestr[:locale_len] +
                            ' ' * (locale_len - len(timestr)))
             else:
                 timestr = time.strftime("%Y-%m-%d %H:%M:%S ",
                                         time.localtime(ent[3]))
         if ent[1] & 020000:
             mode = 'lnk'
         else:
             mode = '%3o' % (ent[1] & 0777)
         ui.write("%c %s %10d %s%s\n" % (ent[0], mode, ent[2], timestr, file_))
     for f in repo.dirstate.copies():
         ui.write(_("copy: %s -> %s\n") % (repo.dirstate.copied(f), f))
 
 def debugsub(ui, repo, rev=None):
     ctx = cmdutil.revsingle(repo, rev, None)
     for k, v in sorted(ctx.substate.items()):
         ui.write('path %s\n' % k)
         ui.write(' source   %s\n' % v[0])
         ui.write(' revision %s\n' % v[1])
 
 def debugdag(ui, repo, file_=None, *revs, **opts):
     """format the changelog or an index DAG as a concise textual description
 
     If you pass a revlog index, the revlog's DAG is emitted. If you list
     revision numbers, they get labelled in the output as rN.
 
     Otherwise, the changelog DAG of the current repo is emitted.
     """
     spaces = opts.get('spaces')
     dots = opts.get('dots')
     if file_:
         rlog = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
         revs = set((int(r) for r in revs))
         def events():
             for r in rlog:
                 yield 'n', (r, list(set(p for p in rlog.parentrevs(r) if p != -1)))
                 if r in revs:
                     yield 'l', (r, "r%i" % r)
     elif repo:
         cl = repo.changelog
         tags = opts.get('tags')
         branches = opts.get('branches')
         if tags:
             labels = {}
             for l, n in repo.tags().items():
                 labels.setdefault(cl.rev(n), []).append(l)
         def events():
             b = "default"
             for r in cl:
                 if branches:
                     newb = cl.read(cl.node(r))[5]['branch']
                     if newb != b:
                         yield 'a', newb
                         b = newb
                 yield 'n', (r, list(set(p for p in cl.parentrevs(r) if p != -1)))
                 if tags:
                     ls = labels.get(r)
                     if ls:
                         for l in ls:
                             yield 'l', (r, l)
     else:
         raise util.Abort(_('need repo for changelog dag'))
 
     for line in dagparser.dagtextlines(events(),
                                        addspaces=spaces,
                                        wraplabels=True,
                                        wrapannotations=True,
                                        wrapnonlinear=dots,
                                        usedots=dots,
                                        maxlinewidth=70):
         ui.write(line)
         ui.write("\n")
 
 def debugdata(ui, repo, file_, rev):
     """dump the contents of a data file revision"""
     r = None
     if repo:
         filelog = repo.file(file_)
         if len(filelog):
             r = filelog
     if not r:
         r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_[:-2] + ".i")
     try:
         ui.write(r.revision(r.lookup(rev)))
     except KeyError:
         raise util.Abort(_('invalid revision identifier %s') % rev)
 
 def debugdate(ui, date, range=None, **opts):
     """parse and display a date"""
     if opts["extended"]:
         d = util.parsedate(date, util.extendeddateformats)
     else:
         d = util.parsedate(date)
     ui.write("internal: %s %s\n" % d)
     ui.write("standard: %s\n" % util.datestr(d))
     if range:
         m = util.matchdate(range)
         ui.write("match: %s\n" % m(d[0]))
 
 def debugindex(ui, repo, file_, **opts):
     """dump the contents of an index file"""
     r = None
     if repo:
         filelog = repo.file(file_)
         if len(filelog):
             r = filelog
 
     format = opts.get('format', 0)
     if format not in (0, 1):
         raise util.Abort("unknown format %d" % format)
 
     if not r:
         r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
 
     if format == 0:
         ui.write("   rev    offset  length   base linkrev"
                  " nodeid       p1           p2\n")
     elif format == 1:
         ui.write("   rev flag   offset   length"
                  "     size   base   link     p1     p2       nodeid\n")
 
     for i in r:
         node = r.node(i)
         if format == 0:
             try:
                 pp = r.parents(node)
             except:
                 pp = [nullid, nullid]
             ui.write("% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % (
                     i, r.start(i), r.length(i), r.base(i), r.linkrev(i),
                     short(node), short(pp[0]), short(pp[1])))
         elif format == 1:
             pr = r.parentrevs(i)
             ui.write("% 6d %04x % 8d % 8d % 8d % 6d % 6d % 6d % 6d %s\n" % (
                     i, r.flags(i), r.start(i), r.length(i), r.rawsize(i),
                     r.base(i), r.linkrev(i), pr[0], pr[1], short(node)))
 
 def debugindexdot(ui, repo, file_):
     """dump an index DAG as a graphviz dot file"""
     r = None
     if repo:
         filelog = repo.file(file_)
         if len(filelog):
             r = filelog
     if not r:
         r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("digraph G {\n")
     for i in r:
         node = r.node(i)
         pp = r.parents(node)
         ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
         if pp[1] != nullid:
             ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write("}\n")
 
 def debuginstall(ui):
     '''test Mercurial installation
 
     Returns 0 on success.
     '''
 
     def writetemp(contents):
         (fd, name) = tempfile.mkstemp(prefix="hg-debuginstall-")
         f = os.fdopen(fd, "wb")
         f.write(contents)
         f.close()
         return name
 
     problems = 0
 
     # encoding
     ui.status(_("Checking encoding (%s)...\n") % encoding.encoding)
     try:
         encoding.fromlocal("test")
     except util.Abort, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" (check that your locale is properly set)\n"))
         problems += 1
 
     # compiled modules
     ui.status(_("Checking installed modules (%s)...\n")
               % os.path.dirname(__file__))
     try:
         import bdiff, mpatch, base85, osutil
     except Exception, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" One or more extensions could not be found"))
         ui.write(_(" (check that you compiled the extensions)\n"))
         problems += 1
 
     # templates
     ui.status(_("Checking templates...\n"))
     try:
         import templater
         templater.templater(templater.templatepath("map-cmdline.default"))
     except Exception, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" (templates seem to have been installed incorrectly)\n"))
         problems += 1
 
     # patch
     ui.status(_("Checking patch...\n"))
     patchproblems = 0
     a = "1\n2\n3\n4\n"
     b = "1\n2\n3\ninsert\n4\n"
     fa = writetemp(a)
     d = mdiff.unidiff(a, None, b, None, os.path.basename(fa),
         os.path.basename(fa))
     fd = writetemp(d)
 
     files = {}
     try:
         patch.patch(fd, ui, cwd=os.path.dirname(fa), files=files)
     except util.Abort, e:
         ui.write(_(" patch call failed:\n"))
         ui.write(" " + str(e) + "\n")
         patchproblems += 1
     else:
         if list(files) != [os.path.basename(fa)]:
             ui.write(_(" unexpected patch output!\n"))
             patchproblems += 1
         a = open(fa).read()
         if a != b:
             ui.write(_(" patch test failed!\n"))
             patchproblems += 1
 
     if patchproblems:
         if ui.config('ui', 'patch'):
             ui.write(_(" (Current patch tool may be incompatible with patch,"
                        " or misconfigured. Please check your configuration"
                        " file)\n"))
         else:
             ui.write(_(" Internal patcher failure, please report this error"
                        " to http://mercurial.selenic.com/wiki/BugTracker\n"))
     problems += patchproblems
 
     os.unlink(fa)
     os.unlink(fd)
 
     # editor
     ui.status(_("Checking commit editor...\n"))
     editor = ui.geteditor()
     cmdpath = util.find_exe(editor) or util.find_exe(editor.split()[0])
     if not cmdpath:
         if editor == 'vi':
             ui.write(_(" No commit editor set and can't find vi in PATH\n"))
             ui.write(_(" (specify a commit editor in your configuration"
                        " file)\n"))
         else:
             ui.write(_(" Can't find editor '%s' in PATH\n") % editor)
             ui.write(_(" (specify a commit editor in your configuration"
                        " file)\n"))
             problems += 1
 
     # check username
     ui.status(_("Checking username...\n"))
     try:
         ui.username()
     except util.Abort, e:
         ui.write(" %s\n" % e)
         ui.write(_(" (specify a username in your configuration file)\n"))
         problems += 1
 
     if not problems:
         ui.status(_("No problems detected\n"))
     else:
         ui.write(_("%s problems detected,"
                    " please check your install!\n") % problems)
 
     return problems
 
 def debugrename(ui, repo, file1, *pats, **opts):
     """dump rename information"""
 
     ctx = cmdutil.revsingle(repo, opts.get('rev'))
     m = cmdutil.match(repo, (file1,) + pats, opts)
     for abs in ctx.walk(m):
         fctx = ctx[abs]
         o = fctx.filelog().renamed(fctx.filenode())
         rel = m.rel(abs)
         if o:
             ui.write(_("%s renamed from %s:%s\n") % (rel, o[0], hex(o[1])))
         else:
             ui.write(_("%s not renamed\n") % rel)
 
 def debugwalk(ui, repo, *pats, **opts):
     """show how files match on given patterns"""
     m = cmdutil.match(repo, pats, opts)
     items = list(repo.walk(m))
     if not items:
         return
     fmt = 'f  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for abs in items]),
         max([len(m.rel(abs)) for abs in items]))
     for abs in items:
         line = fmt % (abs, m.rel(abs), m.exact(abs) and 'exact' or '')
         ui.write("%s\n" % line.rstrip())
 
 def diff(ui, repo, *pats, **opts):
     """diff repository (or selected files)
 
     Show differences between revisions for the specified files.
 
     Differences between files are shown using the unified diff format.
 
     .. note::
        diff may generate unexpected results for merges, as it will
        default to comparing against the working directory's first
        parent changeset if no revisions are specified.
 
     When two revision arguments are given, then changes are shown
     between those revisions. If only one revision is specified then
     that revision is compared to the working directory, and, when no
     revisions are specified, the working directory files are compared
     to its parent.
 
     Alternatively you can specify -c/--change with a revision to see
     the changes in that changeset relative to its first parent.
 
     Without the -a/--text option, diff will avoid generating diffs of
     files it detects as binary. With -a, diff will generate a diff
     anyway, probably with undesirable results.
 
     Use the -g/--git option to generate diffs in the git extended diff
     format. For more information, read :hg:`help diffs`.
 
     Returns 0 on success.
     """
 
     revs = opts.get('rev')
     change = opts.get('change')
     stat = opts.get('stat')
     reverse = opts.get('reverse')
 
     if revs and change:
         msg = _('cannot specify --rev and --change at the same time')
         raise util.Abort(msg)
     elif change:
         node2 = repo.lookup(change)
         node1 = repo[node2].parents()[0].node()
     else:
         node1, node2 = cmdutil.revpair(repo, revs)
 
     if reverse:
         node1, node2 = node2, node1
 
     diffopts = patch.diffopts(ui, opts)
     m = cmdutil.match(repo, pats, opts)
     cmdutil.diffordiffstat(ui, repo, diffopts, node1, node2, m, stat=stat,
                            listsubrepos=opts.get('subrepos'))
 
 def export(ui, repo, *changesets, **opts):
     """dump the header and diffs for one or more changesets
 
     Print the changeset header and diffs for one or more revisions.
 
     The information shown in the changeset header is: author, date,
     branch name (if non-default), changeset hash, parent(s) and commit
     comment.
 
     .. note::
        export may generate unexpected diff output for merge
        changesets, as it will compare the merge changeset against its
        first parent only.
 
     Output may be to a file, in which case the name of the file is
     given using a format string. The formatting rules are as follows:
 
     :``%%``: literal "%" character
     :``%H``: changeset hash (40 hexadecimal digits)
     :``%N``: number of patches being generated
     :``%R``: changeset revision number
     :``%b``: basename of the exporting repository
     :``%h``: short-form changeset hash (12 hexadecimal digits)
     :``%n``: zero-padded sequence number, starting at 1
     :``%r``: zero-padded changeset revision number
 
     Without the -a/--text option, export will avoid generating diffs
     of files it detects as binary. With -a, export will generate a
     diff anyway, probably with undesirable results.
 
     Use the -g/--git option to generate diffs in the git extended diff
     format. See :hg:`help diffs` for more information.
 
     With the --switch-parent option, the diff will be against the
     second parent. It can be useful to review a merge.
 
     Returns 0 on success.
     """
     changesets += tuple(opts.get('rev', []))
     if not changesets:
         raise util.Abort(_("export requires at least one changeset"))
     revs = cmdutil.revrange(repo, changesets)
     if len(revs) > 1:
         ui.note(_('exporting patches:\n'))
     else:
         ui.note(_('exporting patch:\n'))
     cmdutil.export(repo, revs, template=opts.get('output'),
                  switch_parent=opts.get('switch_parent'),
                  opts=patch.diffopts(ui, opts))
 
 def forget(ui, repo, *pats, **opts):
     """forget the specified files on the next commit
 
     Mark the specified files so they will no longer be tracked
     after the next commit.
 
     This only removes files from the current branch, not from the
     entire project history, and it does not delete them from the
     working directory.
 
     To undo a forget before the next commit, see :hg:`add`.
 
     Returns 0 on success.
     """
 
     if not pats:
         raise util.Abort(_('no files specified'))
 
     m = cmdutil.match(repo, pats, opts)
     s = repo.status(match=m, clean=True)
     forget = sorted(s[0] + s[1] + s[3] + s[6])
     errs = 0
 
     for f in m.files():
         if f not in repo.dirstate and not os.path.isdir(m.rel(f)):
             ui.warn(_('not removing %s: file is already untracked\n')
                     % m.rel(f))
             errs = 1
 
     for f in forget:
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     repo[None].remove(forget, unlink=False)
     return errs
 
 def grep(ui, repo, pattern, *pats, **opts):
     """search for a pattern in specified files and revisions
 
     Search revisions of files for a regular expression.
 
     This command behaves differently than Unix grep. It only accepts
     Python/Perl regexps. It searches repository history, not the
     working directory. It always prints the revision number in which a
     match appears.
 
     By default, grep only prints output for the first revision of a
     file in which it finds a match. To get it to print every revision
     that contains a change in match status ("-" for a match that
     becomes a non-match, or "+" for a non-match that becomes a match),
     use the --all flag.
 
     Returns 0 if a match is found, 1 otherwise.
     """
     reflags = 0
     if opts.get('ignore_case'):
         reflags |= re.I
     try:
         regexp = re.compile(pattern, reflags)
     except re.error, inst:
         ui.warn(_("grep: invalid match pattern: %s\n") % inst)
         return 1
     sep, eol = ':', '\n'
     if opts.get('print0'):
         sep = eol = '\0'
 
     getfile = util.lrucachefunc(repo.file)
 
     def matchlines(body):
         begin = 0
         linenum = 0
         while True:
             match = regexp.search(body, begin)
             if not match:
                 break
             mstart, mend = match.span()
             linenum += body.count('\n', begin, mstart) + 1
             lstart = body.rfind('\n', begin, mstart) + 1 or begin
             begin = body.find('\n', mend) + 1 or len(body)
             lend = begin - 1
             yield linenum, mstart - lstart, mend - lstart, body[lstart:lend]
 
     class linestate(object):
         def __init__(self, line, linenum, colstart, colend):
             self.line = line
             self.linenum = linenum
             self.colstart = colstart
             self.colend = colend
 
         def __hash__(self):
             return hash((self.linenum, self.line))
 
         def __eq__(self, other):
             return self.line == other.line
 
     matches = {}
     copies = {}
     def grepbody(fn, rev, body):
         matches[rev].setdefault(fn, [])
         m = matches[rev][fn]
         for lnum, cstart, cend, line in matchlines(body):
             s = linestate(line, lnum, cstart, cend)
             m.append(s)
 
     def difflinestates(a, b):
         sm = difflib.SequenceMatcher(None, a, b)
         for tag, alo, ahi, blo, bhi in sm.get_opcodes():
             if tag == 'insert':
                 for i in xrange(blo, bhi):
                     yield ('+', b[i])
             elif tag == 'delete':
                 for i in xrange(alo, ahi):
                     yield ('-', a[i])
             elif tag == 'replace':
                 for i in xrange(alo, ahi):
                     yield ('-', a[i])
                 for i in xrange(blo, bhi):
                     yield ('+', b[i])
 
     def display(fn, ctx, pstates, states):
         rev = ctx.rev()
         datefunc = ui.quiet and util.shortdate or util.datestr
         found = False
         filerevmatches = {}
         if opts.get('all'):
             iter = difflinestates(pstates, states)
         else:
             iter = [('', l) for l in states]
         for change, l in iter:
             cols = [fn, str(rev)]
             before, match, after = None, None, None
             if opts.get('line_number'):
                 cols.append(str(l.linenum))
             if opts.get('all'):
                 cols.append(change)
             if opts.get('user'):
                 cols.append(ui.shortuser(ctx.user()))
             if opts.get('date'):
                 cols.append(datefunc(ctx.date()))
             if opts.get('files_with_matches'):
                 c = (fn, rev)
                 if c in filerevmatches:
                     continue
                 filerevmatches[c] = 1
             else:
                 before = l.line[:l.colstart]
                 match = l.line[l.colstart:l.colend]
                 after = l.line[l.colend:]
             ui.write(sep.join(cols))
             if before is not None:
                 ui.write(sep + before)
                 ui.write(match, label='grep.match')
                 ui.write(after)
             ui.write(eol)
             found = True
         return found
 
     skip = {}
     revfiles = {}
     matchfn = cmdutil.match(repo, pats, opts)
     found = False
     follow = opts.get('follow')
 
     def prep(ctx, fns):
         rev = ctx.rev()
         pctx = ctx.parents()[0]
         parent = pctx.rev()
         matches.setdefault(rev, {})
         matches.setdefault(parent, {})
         files = revfiles.setdefault(rev, [])
         for fn in fns:
             flog = getfile(fn)
             try:
                 fnode = ctx.filenode(fn)
             except error.LookupError:
                 continue
 
             copied = flog.renamed(fnode)
             copy = follow and copied and copied[0]
             if copy:
                 copies.setdefault(rev, {})[fn] = copy
             if fn in skip:
                 if copy:
                     skip[copy] = True
                 continue
             files.append(fn)
 
             if fn not in matches[rev]:
                 grepbody(fn, rev, flog.read(fnode))
 
             pfn = copy or fn
             if pfn not in matches[parent]:
                 try:
                     fnode = pctx.filenode(pfn)
                     grepbody(pfn, parent, flog.read(fnode))
                 except error.LookupError:
                     pass
 
     for ctx in cmdutil.walkchangerevs(repo, matchfn, opts, prep):
         rev = ctx.rev()
         parent = ctx.parents()[0].rev()
         for fn in sorted(revfiles.get(rev, [])):
             states = matches[rev][fn]
             copy = copies.get(rev, {}).get(fn)
             if fn in skip:
                 if copy:
                     skip[copy] = True
                 continue
             pstates = matches.get(parent, {}).get(copy or fn, [])
             if pstates or states:
                 r = display(fn, ctx, pstates, states)
                 found = found or r
                 if r and not opts.get('all'):
                     skip[fn] = True
                     if copy:
                         skip[copy] = True
         del matches[rev]
         del revfiles[rev]
 
     return not found
 
 def heads(ui, repo, *branchrevs, **opts):
     """show current repository heads or show branch heads
 
     With no arguments, show all repository branch heads.
 
     Repository "heads" are changesets with no child changesets. They are
     where development generally takes place and are the usual targets
     for update and merge operations. Branch heads are changesets that have
     no child changeset on the same branch.
 
     If one or more REVs are given, only branch heads on the branches
     associated with the specified changesets are shown.
 
     If -c/--closed is specified, also show branch heads marked closed
     (see :hg:`commit --close-branch`).
 
     If STARTREV is specified, only those heads that are descendants of
     STARTREV will be displayed.
 
     If -t/--topo is specified, named branch mechanics will be ignored and only
     changesets without children will be shown.
 
     Returns 0 if matching heads are found, 1 if not.
     """
 
     start = None
     if 'rev' in opts:
         start = cmdutil.revsingle(repo, opts['rev'], None).node()
 
     if opts.get('topo'):
         heads = [repo[h] for h in repo.heads(start)]
     else:
         heads = []
         for b, ls in repo.branchmap().iteritems():
             if start is None:
                 heads += [repo[h] for h in ls]
                 continue
             startrev = repo.changelog.rev(start)
             descendants = set(repo.changelog.descendants(startrev))
             descendants.add(startrev)
             rev = repo.changelog.rev
             heads += [repo[h] for h in ls if rev(h) in descendants]
 
     if branchrevs:
         branches = set(repo[br].branch() for br in branchrevs)
         heads = [h for h in heads if h.branch() in branches]
 
     if not opts.get('closed'):
         heads = [h for h in heads if not h.extra().get('close')]
 
     if opts.get('active') and branchrevs:
         dagheads = repo.heads(start)
         heads = [h for h in heads if h.node() in dagheads]
 
     if branchrevs:
         haveheads = set(h.branch() for h in heads)
         if branches - haveheads:
             headless = ', '.join(b for b in branches - haveheads)
             msg = _('no open branch heads found on branches %s')
             if opts.get('rev'):
                 msg += _(' (started at %s)' % opts['rev'])
             ui.warn((msg + '\n') % headless)
 
     if not heads:
         return 1
 
     heads = sorted(heads, key=lambda x: -x.rev())
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for ctx in heads:
         displayer.show(ctx)
     displayer.close()
 
 def help_(ui, name=None, with_version=False, unknowncmd=False):
     """show help for a given topic or a help overview
 
     With no arguments, print a list of commands with short help messages.
 
     Given a topic, extension, or command name, print help for that
     topic.
 
     Returns 0 if successful.
     """
     option_lists = []
     textwidth = ui.termwidth() - 2
 
     def addglobalopts(aliases):
         if ui.verbose:
             option_lists.append((_("global options:"), globalopts))
             if name == 'shortlist':
                 option_lists.append((_('use "hg help" for the full list '
                                        'of commands'), ()))
         else:
             if name == 'shortlist':
                 msg = _('use "hg help" for the full list of commands '
                         'or "hg -v" for details')
             elif aliases:
                 msg = _('use "hg -v help%s" to show builtin aliases and '
                         'global options') % (name and " " + name or "")
             else:
                 msg = _('use "hg -v help %s" to show global options') % name
             option_lists.append((msg, ()))
 
     def helpcmd(name):
         if with_version:
             version_(ui)
             ui.write('\n')
 
         try:
             aliases, entry = cmdutil.findcmd(name, table, strict=unknowncmd)
         except error.AmbiguousCommand, inst:
             # py3k fix: except vars can't be used outside the scope of the
             # except block, nor can be used inside a lambda. python issue4617
             prefix = inst.args[0]
             select = lambda c: c.lstrip('^').startswith(prefix)
             helplist(_('list of commands:\n\n'), select)
             return
 
         # check if it's an invalid alias and display its error if it is
         if getattr(entry[0], 'badalias', False):
             if not unknowncmd:
                 entry[0](ui)
             return
 
         # synopsis
         if len(entry) > 2:
             if entry[2].startswith('hg'):
                 ui.write("%s\n" % entry[2])
             else:
                 ui.write('hg %s %s\n' % (aliases[0], entry[2]))
         else:
             ui.write('hg %s\n' % aliases[0])
 
         # aliases
         if not ui.quiet and len(aliases) > 1:
             ui.write(_("\naliases: %s\n") % ', '.join(aliases[1:]))
 
         # description
         doc = gettext(entry[0].__doc__)
         if not doc:
             doc = _("(no help text available)")
         if hasattr(entry[0], 'definition'):  # aliased command
             if entry[0].definition.startswith('!'):  # shell alias
                 doc = _('shell alias for::\n\n    %s') % entry[0].definition[1:]
             else:
                 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc)
         if ui.quiet:
             doc = doc.splitlines()[0]
         keep = ui.verbose and ['verbose'] or []
         formatted, pruned = minirst.format(doc, textwidth, keep=keep)
         ui.write("\n%s\n" % formatted)
         if pruned:
             ui.write(_('\nuse "hg -v help %s" to show verbose help\n') % name)
 
         if not ui.quiet:
             # options
             if entry[1]:
                 option_lists.append((_("options:\n"), entry[1]))
 
             addglobalopts(False)
 
     def helplist(header, select=None):
         h = {}
         cmds = {}
         for c, e in table.iteritems():
             f = c.split("|", 1)[0]
             if select and not select(f):
                 continue
             if (not select and name != 'shortlist' and
                 e[0].__module__ != __name__):
                 continue
             if name == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
             doc = e[0].__doc__
             if doc and 'DEPRECATED' in doc and not ui.verbose:
                 continue
             doc = gettext(doc)
             if not doc:
                 doc = _("(no help text available)")
             h[f] = doc.splitlines()[0].rstrip()
             cmds[f] = c.lstrip("^")
 
         if not h:
             ui.status(_('no commands defined\n'))
             return
 
         ui.status(header)
         fns = sorted(h)
         m = max(map(len, fns))
         for f in fns:
             if ui.verbose:
                 commands = cmds[f].replace("|",", ")
                 ui.write(" %s:\n      %s\n"%(commands, h[f]))
             else:
                 ui.write('%s\n' % (util.wrap(h[f], textwidth,
                                              initindent=' %-*s   ' % (m, f),
                                              hangindent=' ' * (m + 4))))
 
         if not ui.quiet:
             addglobalopts(True)
 
     def helptopic(name):
         for names, header, doc in help.helptable:
             if name in names:
                 break
         else:
             raise error.UnknownCommand(name)
 
         # description
         if not doc:
             doc = _("(no help text available)")
         if hasattr(doc, '__call__'):
             doc = doc()
 
         ui.write("%s\n\n" % header)
         ui.write("%s\n" % minirst.format(doc, textwidth, indent=4))
 
     def helpext(name):
         try:
             mod = extensions.find(name)
             doc = gettext(mod.__doc__) or _('no help text available')
         except KeyError:
             mod = None
             doc = extensions.disabledext(name)
             if not doc:
                 raise error.UnknownCommand(name)
 
         if '\n' not in doc:
             head, tail = doc, ""
         else:
             head, tail = doc.split('\n', 1)
         ui.write(_('%s extension - %s\n\n') % (name.split('.')[-1], head))
         if tail:
             ui.write(minirst.format(tail, textwidth))
             ui.status('\n\n')
 
         if mod:
             try:
                 ct = mod.cmdtable
             except AttributeError:
                 ct = {}
             modcmds = set([c.split('|', 1)[0] for c in ct])
             helplist(_('list of commands:\n\n'), modcmds.__contains__)
         else:
             ui.write(_('use "hg help extensions" for information on enabling '
                        'extensions\n'))
 
     def helpextcmd(name):
         cmd, ext, mod = extensions.disabledcmd(ui, name, ui.config('ui', 'strict'))
         doc = gettext(mod.__doc__).splitlines()[0]
 
         msg = help.listexts(_("'%s' is provided by the following "
                               "extension:") % cmd, {ext: doc}, len(ext),
                             indent=4)
         ui.write(minirst.format(msg, textwidth))
         ui.write('\n\n')
         ui.write(_('use "hg help extensions" for information on enabling '
                    'extensions\n'))
 
     help.addtopichook('revsets', revset.makedoc)
 
     if name and name != 'shortlist':
         i = None
         if unknowncmd:
             queries = (helpextcmd,)
         else:
             queries = (helptopic, helpcmd, helpext, helpextcmd)
         for f in queries:
             try:
                 f(name)
                 i = None
                 break
             except error.UnknownCommand, inst:
                 i = inst
         if i:
             raise i
 
     else:
         # program name
         if ui.verbose or with_version:
             version_(ui)
         else:
             ui.status(_("Mercurial Distributed SCM\n"))
         ui.status('\n')
 
         # list of commands
         if name == "shortlist":
             header = _('basic commands:\n\n')
         else:
             header = _('list of commands:\n\n')
 
         helplist(header)
         if name != 'shortlist':
             exts, maxlength = extensions.enabled()
             text = help.listexts(_('enabled extensions:'), exts, maxlength)
             if text:
                 ui.write("\n%s\n" % minirst.format(text, textwidth))
 
     # list all option lists
     opt_output = []
     multioccur = False
     for title, options in option_lists:
         opt_output.append(("\n%s" % title, None))
         for option in options:
             if len(option) == 5:
                 shortopt, longopt, default, desc, optlabel = option
             else:
                 shortopt, longopt, default, desc = option
                 optlabel = _("VALUE") # default label
 
             if _("DEPRECATED") in desc and not ui.verbose:
                 continue
             if isinstance(default, list):
                 numqualifier = " %s [+]" % optlabel
                 multioccur = True
             elif (default is not None) and not isinstance(default, bool):
                 numqualifier = " %s" % optlabel
             else:
                 numqualifier = ""
             opt_output.append(("%2s%s" %
                                (shortopt and "-%s" % shortopt,
                                 longopt and " --%s%s" %
                                 (longopt, numqualifier)),
                                "%s%s" % (desc,
                                          default
                                          and _(" (default: %s)") % default
                                          or "")))
     if multioccur:
         msg = _("\n[+] marked option can be specified multiple times")
         if ui.verbose and name != 'shortlist':
             opt_output.append((msg, None))
         else:
             opt_output.insert(-1, (msg, None))
 
     if not name:
         ui.write(_("\nadditional help topics:\n\n"))
         topics = []
         for names, header, doc in help.helptable:
             topics.append((sorted(names, key=len, reverse=True)[0], header))
         topics_len = max([len(s[0]) for s in topics])
         for t, desc in topics:
             ui.write(" %-*s  %s\n" % (topics_len, t, desc))
 
     if opt_output:
         colwidth = encoding.colwidth
         # normalize: (opt or message, desc or None, width of opt)
         entries = [desc and (opt, desc, colwidth(opt)) or (opt, None, 0)
                    for opt, desc in opt_output]
         hanging = max([e[2] for e in entries])
         for opt, desc, width in entries:
             if desc:
                 initindent = ' %s%s  ' % (opt, ' ' * (hanging - width))
                 hangindent = ' ' * (hanging + 3)
                 ui.write('%s\n' % (util.wrap(desc, textwidth,
                                              initindent=initindent,
                                              hangindent=hangindent)))
             else:
                 ui.write("%s\n" % opt)
 
 def identify(ui, repo, source=None,
              rev=None, num=None, id=None, branch=None, tags=None):
     """identify the working copy or specified revision
 
     With no revision, print a summary of the current state of the
     repository.
 
     Specifying a path to a repository root or Mercurial bundle will
     cause lookup to operate on that repository/bundle.
 
     This summary identifies the repository state using one or two
     parent hash identifiers, followed by a "+" if there are
     uncommitted changes in the working directory, a list of tags for
     this revision and a branch name for non-default branches.
 
     Returns 0 if successful.
     """
 
     if not repo and not source:
         raise util.Abort(_("there is no Mercurial repository here "
                            "(.hg not found)"))
 
     hexfunc = ui.debugflag and hex or short
     default = not (num or id or branch or tags)
     output = []
 
     revs = []
     if source:
         source, branches = hg.parseurl(ui.expandpath(source))
         repo = hg.repository(ui, source)
         revs, checkout = hg.addbranchrevs(repo, repo, branches, None)
 
     if not repo.local():
         if not rev and revs:
             rev = revs[0]
         if not rev:
             rev = "tip"
         if num or branch or tags:
             raise util.Abort(
                 "can't query remote revision number, branch, or tags")
         output = [hexfunc(repo.lookup(rev))]
     elif not rev:
         ctx = repo[None]
         parents = ctx.parents()
         changed = False
         if default or id or num:
             changed = util.any(repo.status())
         if default or id:
             output = ["%s%s" % ('+'.join([hexfunc(p.node()) for p in parents]),
                                 (changed) and "+" or "")]
         if num:
             output.append("%s%s" % ('+'.join([str(p.rev()) for p in parents]),
                                     (changed) and "+" or ""))
     else:
         ctx = cmdutil.revsingle(repo, rev)
         if default or id:
             output = [hexfunc(ctx.node())]
         if num:
             output.append(str(ctx.rev()))
 
     if repo.local() and default and not ui.quiet:
         b = ctx.branch()
         if b != 'default':
             output.append("(%s)" % b)
 
         # multiple tags for a single parent separated by '/'
         t = "/".join(ctx.tags())
         if t:
             output.append(t)
 
     if branch:
         output.append(ctx.branch())
 
     if tags:
         output.extend(ctx.tags())
 
     ui.write("%s\n" % ' '.join(output))
 
 def import_(ui, repo, patch1, *patches, **opts):
     """import an ordered set of patches
 
     Import a list of patches and commit them individually (unless
     --no-commit is specified).
 
     If there are outstanding changes in the working directory, import
     will abort unless given the -f/--force flag.
 
     You can import a patch straight from a mail message. Even patches
     as attachments work (to use the body part, it must have type
     text/plain or text/x-patch). From and Subject headers of email
     message are used as default committer and commit message. All
     text/plain body parts before first diff are added to commit
     message.
 
     If the imported patch was generated by :hg:`export`, user and
     description from patch override values from message headers and
     body. Values given on command line with -m/--message and -u/--user
     override these.
 
     If --exact is specified, import will set the working directory to
     the parent of each patch before applying it, and will abort if the
     resulting changeset has a different ID than the one recorded in
     the patch. This may happen due to character set problems or other
     deficiencies in the text patch format.
 
     With -s/--similarity, hg will attempt to discover renames and
     copies in the patch in the same way as 'addremove'.
 
     To read a patch from standard input, use "-" as the patch name. If
     a URL is specified, the patch will be downloaded from it.
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Returns 0 on success.
     """
     patches = (patch1,) + patches
 
     date = opts.get('date')
     if date:
         opts['date'] = util.parsedate(date)
 
     try:
         sim = float(opts.get('similarity') or 0)
     except ValueError:
         raise util.Abort(_('similarity must be a number'))
     if sim < 0 or sim > 100:
         raise util.Abort(_('similarity must be between 0 and 100'))
 
     if opts.get('exact') or not opts.get('force'):
         cmdutil.bail_if_changed(repo)
 
     d = opts["base"]
     strip = opts["strip"]
     wlock = lock = None
     msgs = []
 
     def tryone(ui, hunk):
         tmpname, message, user, date, branch, nodeid, p1, p2 = \
             patch.extract(ui, hunk)
 
         if not tmpname:
             return None
         commitid = _('to working directory')
 
         try:
             cmdline_message = cmdutil.logmessage(opts)
             if cmdline_message:
                 # pickup the cmdline msg
                 message = cmdline_message
             elif message:
                 # pickup the patch msg
                 message = message.strip()
             else:
                 # launch the editor
                 message = None
             ui.debug('message:\n%s\n' % message)
 
             wp = repo.parents()
             if opts.get('exact'):
                 if not nodeid or not p1:
                     raise util.Abort(_('not a Mercurial patch'))
                 p1 = repo.lookup(p1)
                 p2 = repo.lookup(p2 or hex(nullid))
 
                 if p1 != wp[0].node():
                     hg.clean(repo, p1)
                 repo.dirstate.setparents(p1, p2)
             elif p2:
                 try:
                     p1 = repo.lookup(p1)
                     p2 = repo.lookup(p2)
                     if p1 == wp[0].node():
                         repo.dirstate.setparents(p1, p2)
                 except error.RepoError:
                     pass
             if opts.get('exact') or opts.get('import_branch'):
                 repo.dirstate.setbranch(branch or 'default')
 
             files = {}
             try:
                 patch.patch(tmpname, ui, strip=strip, cwd=repo.root,
                             files=files, eolmode=None)
             finally:
                 files = cmdutil.updatedir(ui, repo, files,
                                           similarity=sim / 100.0)
             if opts.get('no_commit'):
                 if message:
                     msgs.append(message)
             else:
                 if opts.get('exact'):
                     m = None
                 else:
                     m = cmdutil.matchfiles(repo, files or [])
                 n = repo.commit(message, opts.get('user') or user,
                                 opts.get('date') or date, match=m,
                                 editor=cmdutil.commiteditor)
                 if opts.get('exact'):
                     if hex(n) != nodeid:
                         repo.rollback()
                         raise util.Abort(_('patch is damaged'
                                            ' or loses information'))
                 # Force a dirstate write so that the next transaction
                 # backups an up-do-date file.
                 repo.dirstate.write()
                 if n:
                     commitid = short(n)
 
             return commitid
         finally:
             os.unlink(tmpname)
 
     try:
         wlock = repo.wlock()
         lock = repo.lock()
         lastcommit = None
         for p in patches:
             pf = os.path.join(d, p)
 
             if pf == '-':
                 ui.status(_("applying patch from stdin\n"))
                 pf = sys.stdin
             else:
                 ui.status(_("applying %s\n") % p)
                 pf = url.open(ui, pf)
 
             haspatch = False
             for hunk in patch.split(pf):
                 commitid = tryone(ui, hunk)
                 if commitid:
                     haspatch = True
                     if lastcommit:
                         ui.status(_('applied %s\n') % lastcommit)
                     lastcommit = commitid
 
             if not haspatch:
                 raise util.Abort(_('no diffs found'))
 
         if msgs:
             repo.opener('last-message.txt', 'wb').write('\n* * *\n'.join(msgs))
     finally:
         release(lock, wlock)
 
 def incoming(ui, repo, source="default", **opts):
     """show new changesets found in source
 
     Show new changesets found in the specified path/URL or the default
     pull location. These are the changesets that would have been pulled
     if a pull at the time you issued this command.
 
     For remote repository, using --bundle avoids downloading the
     changesets twice if the incoming is followed by a pull.
 
     See pull for valid source format details.
 
     Returns 0 if there are incoming changes, 1 otherwise.
     """
     if opts.get('bundle') and opts.get('subrepos'):
         raise util.Abort(_('cannot combine --bundle and --subrepos'))
 
     ret = hg.incoming(ui, repo, source, opts)
     return ret
 
 def init(ui, dest=".", **opts):
     """create a new repository in the given directory
 
     Initialize a new repository in the given directory. If the given
     directory does not exist, it will be created.
 
     If no directory is given, the current directory is used.
 
     It is possible to specify an ``ssh://`` URL as the destination.
     See :hg:`help urls` for more information.
 
     Returns 0 on success.
     """
     hg.repository(hg.remoteui(ui, opts), ui.expandpath(dest), create=1)
 
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns
 
     Print files under Mercurial control in the working directory whose
     names match the given patterns.
 
     By default, this command searches all directories in the working
     directory. To search just the current directory and its
     subdirectories, use "--include .".
 
     If no patterns are given to match, this command prints the names
     of all files under Mercurial control in the working directory.
 
     If you want to feed the output of this command into the "xargs"
     command, use the -0 option to both this command and "xargs". This
     will avoid the problem of "xargs" treating single filenames that
     contain whitespace as multiple filenames.
 
     Returns 0 if a match is found, 1 otherwise.
     """
     end = opts.get('print0') and '\0' or '\n'
     rev = cmdutil.revsingle(repo, opts.get('rev'), None).node()
 
     ret = 1
     m = cmdutil.match(repo, pats, opts, default='relglob')
     m.bad = lambda x, y: False
     for abs in repo[rev].walk(m):
         if not rev and abs not in repo.dirstate:
             continue
         if opts.get('fullpath'):
             ui.write(repo.wjoin(abs), end)
         else:
             ui.write(((pats and m.rel(abs)) or abs), end)
         ret = 0
 
     return ret
 
 def log(ui, repo, *pats, **opts):
     """show revision history of entire repository or files
 
     Print the revision history of the specified files or the entire
     project.
 
     File history is shown without following rename or copy history of
     files. Use -f/--follow with a filename to follow history across
     renames and copies. --follow without a filename will only show
     ancestors or descendants of the starting revision. --follow-first
     only follows the first parent of merge revisions.
 
     If no revision range is specified, the default is ``tip:0`` unless
     --follow is set, in which case the working directory parent is
     used as the starting revision. You can specify a revision set for
     log, see :hg:`help revsets` for more information.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     By default this command prints revision number and changeset id,
     tags, non-trivial parents, user, date and time, and a summary for
     each commit. When the -v/--verbose switch is used, the list of
     changed files and full commit message are shown.
 
     .. note::
        log -p/--patch may generate unexpected diff output for merge
        changesets, as it will only compare the merge changeset against
        its first parent. Also, only files different from BOTH parents
        will appear in files:.
 
     Returns 0 on success.
     """
 
     matchfn = cmdutil.match(repo, pats, opts)
     limit = cmdutil.loglimit(opts)
     count = 0
 
     endrev = None
     if opts.get('copies') and opts.get('rev'):
         endrev = max(cmdutil.revrange(repo, opts.get('rev'))) + 1
 
     df = False
     if opts["date"]:
         df = util.matchdate(opts["date"])
 
     branches = opts.get('branch', []) + opts.get('only_branch', [])
     opts['branch'] = [repo.lookupbranch(b) for b in branches]
 
     displayer = cmdutil.show_changeset(ui, repo, opts, True)
     def prep(ctx, fns):
         rev = ctx.rev()
         parents = [p for p in repo.changelog.parentrevs(rev)
                    if p != nullrev]
         if opts.get('no_merges') and len(parents) == 2:
             return
         if opts.get('only_merges') and len(parents) != 2:
             return
         if opts.get('branch') and ctx.branch() not in opts['branch']:
             return
         if df and not df(ctx.date()[0]):
             return
         if opts['user'] and not [k for k in opts['user']
                                  if k.lower() in ctx.user().lower()]:
             return
         if opts.get('keyword'):
             for k in [kw.lower() for kw in opts['keyword']]:
                 if (k in ctx.user().lower() or
                     k in ctx.description().lower() or
                     k in " ".join(ctx.files()).lower()):
                     break
             else:
                 return
 
         copies = None
         if opts.get('copies') and rev:
             copies = []
             getrenamed = templatekw.getrenamedfn(repo, endrev=endrev)
             for fn in ctx.files():
                 rename = getrenamed(fn, rev)
                 if rename:
                     copies.append((fn, rename[0]))
 
         revmatchfn = None
         if opts.get('patch') or opts.get('stat'):
             if opts.get('follow') or opts.get('follow_first'):
                 # note: this might be wrong when following through merges
                 revmatchfn = cmdutil.match(repo, fns, default='path')
             else:
                 revmatchfn = matchfn
 
         displayer.show(ctx, copies=copies, matchfn=revmatchfn)
 
     for ctx in cmdutil.walkchangerevs(repo, matchfn, opts, prep):
         if count == limit:
             break
         if displayer.flush(ctx.rev()):
             count += 1
     displayer.close()
 
 def manifest(ui, repo, node=None, rev=None):
     """output the current or given revision of the project manifest
 
     Print a list of version controlled files for the given revision.
     If no revision is given, the first parent of the working directory
     is used, or the null revision if no revision is checked out.
 
     With -v, print file permissions, symlink and executable bits.
     With --debug, print file revision hashes.
 
     Returns 0 on success.
     """
 
     if rev and node:
         raise util.Abort(_("please specify just one revision"))
 
     if not node:
         node = rev
 
     decor = {'l':'644 @ ', 'x':'755 * ', '':'644   '}
     ctx = cmdutil.revsingle(repo, node)
     for f in ctx:
         if ui.debugflag:
             ui.write("%40s " % hex(ctx.manifest()[f]))
         if ui.verbose:
             ui.write(decor[ctx.flags(f)])
         ui.write("%s\n" % f)
 
 def merge(ui, repo, node=None, **opts):
     """merge working directory with another revision
 
     The current working directory is updated with all changes made in
     the requested revision since the last common predecessor revision.
 
     Files that changed between either parent are marked as changed for
     the next commit and a commit must be performed before any further
     updates to the repository are allowed. The next commit will have
     two parents.
 
     ``--tool`` can be used to specify the merge tool used for file
     merges. It overrides the HGMERGE environment variable and your
     configuration files.
 
     If no revision is specified, the working directory's parent is a
     head revision, and the current branch contains exactly one other
     head, the other head is merged with by default. Otherwise, an
     explicit revision with which to merge with must be provided.
 
     :hg:`resolve` must be used to resolve unresolved files.
 
     To undo an uncommitted merge, use :hg:`update --clean .` which
     will check out a clean copy of the original merge parent, losing
     all changes.
 
     Returns 0 on success, 1 if there are unresolved files.
     """
 
     if opts.get('rev') and node:
         raise util.Abort(_("please specify just one revision"))
     if not node:
         node = opts.get('rev')
 
     if not node:
         branch = repo[None].branch()
         bheads = repo.branchheads(branch)
         if len(bheads) > 2:
             raise util.Abort(_(
                 'branch \'%s\' has %d heads - '
                 'please merge with an explicit rev\n'
                 '(run \'hg heads .\' to see heads)')
                 % (branch, len(bheads)))
 
         parent = repo.dirstate.parents()[0]
         if len(bheads) == 1:
             if len(repo.heads()) > 1:
                 raise util.Abort(_(
                     'branch \'%s\' has one head - '
                     'please merge with an explicit rev\n'
                     '(run \'hg heads\' to see all heads)')
                     % branch)
             msg = _('there is nothing to merge')
             if parent != repo.lookup(repo[None].branch()):
                 msg = _('%s - use "hg update" instead') % msg
             raise util.Abort(msg)
 
         if parent not in bheads:
             raise util.Abort(_('working dir not at a head rev - '
                                'use "hg update" or merge with an explicit rev'))
         node = parent == bheads[0] and bheads[-1] or bheads[0]
     else:
         node = cmdutil.revsingle(repo, node).node()
 
     if opts.get('preview'):
         # find nodes that are ancestors of p2 but not of p1
         p1 = repo.lookup('.')
         p2 = repo.lookup(node)
         nodes = repo.changelog.findmissing(common=[p1], heads=[p2])
 
         displayer = cmdutil.show_changeset(ui, repo, opts)
         for node in nodes:
             displayer.show(repo[node])
         displayer.close()
         return 0
 
     try:
         # ui.forcemerge is an internal variable, do not document
         ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
         return hg.merge(repo, node, force=opts.get('force'))
     finally:
         ui.setconfig('ui', 'forcemerge', '')
 
 def outgoing(ui, repo, dest=None, **opts):
     """show changesets not found in the destination
 
     Show changesets not found in the specified destination repository
     or the default push location. These are the changesets that would
     be pushed if a push was requested.
 
     See pull for details of valid destination formats.
 
     Returns 0 if there are outgoing changes, 1 otherwise.
     """
     ret = hg.outgoing(ui, repo, dest, opts)
     return ret
 
 def parents(ui, repo, file_=None, **opts):
     """show the parents of the working directory or revision
 
     Print the working directory's parent revisions. If a revision is
     given via -r/--rev, the parent of that revision will be printed.
     If a file argument is given, the revision in which the file was
     last changed (before the working directory revision or the
     argument to --rev if given) is printed.
 
     Returns 0 on success.
     """
 
     ctx = cmdutil.revsingle(repo, opts.get('rev'), None)
 
     if file_:
         m = cmdutil.match(repo, (file_,), opts)
         if m.anypats() or len(m.files()) != 1:
             raise util.Abort(_('can only specify an explicit filename'))
         file_ = m.files()[0]
         filenodes = []
         for cp in ctx.parents():
             if not cp:
                 continue
             try:
                 filenodes.append(cp.filenode(file_))
             except error.LookupError:
                 pass
         if not filenodes:
             raise util.Abort(_("'%s' not found in manifest!") % file_)
         fl = repo.file(file_)
         p = [repo.lookup(fl.linkrev(fl.rev(fn))) for fn in filenodes]
     else:
         p = [cp.node() for cp in ctx.parents()]
 
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for n in p:
         if n != nullid:
             displayer.show(repo[n])
     displayer.close()
 
 def paths(ui, repo, search=None):
     """show aliases for remote repositories
 
     Show definition of symbolic path name NAME. If no name is given,
     show definition of all available names.
 
     Path names are defined in the [paths] section of your
     configuration file and in ``/etc/mercurial/hgrc``. If run inside a
     repository, ``.hg/hgrc`` is used, too.
 
     The path names ``default`` and ``default-push`` have a special
     meaning.  When performing a push or pull operation, they are used
     as fallbacks if no location is specified on the command-line.
     When ``default-push`` is set, it will be used for push and
     ``default`` will be used for pull; otherwise ``default`` is used
     as the fallback for both.  When cloning a repository, the clone
     source is written as ``default`` in ``.hg/hgrc``.  Note that
     ``default`` and ``default-push`` apply to all inbound (e.g.
     :hg:`incoming`) and outbound (e.g. :hg:`outgoing`, :hg:`email` and
     :hg:`bundle`) operations.
 
     See :hg:`help urls` for more information.
 
     Returns 0 on success.
     """
     if search:
         for name, path in ui.configitems("paths"):
             if name == search:
                 ui.write("%s\n" % url.hidepassword(path))
                 return
         ui.warn(_("not found!\n"))
         return 1
     else:
         for name, path in ui.configitems("paths"):
             ui.write("%s = %s\n" % (name, url.hidepassword(path)))
 
 def postincoming(ui, repo, modheads, optupdate, checkout):
     if modheads == 0:
         return
     if optupdate:
         if (modheads <= 1 or len(repo.branchheads()) == 1) or checkout:
             return hg.update(repo, checkout)
         else:
             ui.status(_("not updating, since new heads added\n"))
     if modheads > 1:
         ui.status(_("(run 'hg heads' to see heads, 'hg merge' to merge)\n"))
     else:
         ui.status(_("(run 'hg update' to get a working copy)\n"))
 
 def pull(ui, repo, source="default", **opts):
     """pull changes from the specified source
 
     Pull changes from a remote repository to a local one.
 
     This finds all changes from the repository at the specified path
     or URL and adds them to a local repository (the current one unless
     -R is specified). By default, this does not update the copy of the
     project in the working directory.
 
     Use :hg:`incoming` if you want to see what would have been added
     by a pull at the time you issued this command. If you then decide
     to add those changes to the repository, you should use :hg:`pull
     -r X` where ``X`` is the last changeset listed by :hg:`incoming`.
 
     If SOURCE is omitted, the 'default' path will be used.
     See :hg:`help urls` for more information.
 
     Returns 0 on success, 1 if an update had unresolved files.
     """
     source, branches = hg.parseurl(ui.expandpath(source), opts.get('branch'))
     other = hg.repository(hg.remoteui(repo, opts), source)
     ui.status(_('pulling from %s\n') % url.hidepassword(source))
     revs, checkout = hg.addbranchrevs(repo, other, branches, opts.get('rev'))
     if revs:
         try:
             revs = [other.lookup(rev) for rev in revs]
         except error.CapabilityError:
             err = _("other repository doesn't support revision lookup, "
                     "so a rev cannot be specified.")
             raise util.Abort(err)
 
     modheads = repo.pull(other, heads=revs, force=opts.get('force'))
     if checkout:
         checkout = str(repo.changelog.rev(other.lookup(checkout)))
     repo._subtoppath = source
     try:
         return postincoming(ui, repo, modheads, opts.get('update'), checkout)
     finally:
         del repo._subtoppath
 
 def push(ui, repo, dest=None, **opts):
     """push changes to the specified destination
 
     Push changesets from the local repository to the specified
     destination.
 
     This operation is symmetrical to pull: it is identical to a pull
     in the destination repository from the current one.
 
     By default, push will not allow creation of new heads at the
     destination, since multiple heads would make it unclear which head
     to use. In this situation, it is recommended to pull and merge
     before pushing.
 
     Use --new-branch if you want to allow push to create a new named
     branch that is not present at the destination. This allows you to
     only create a new branch without forcing other changes.
 
     Use -f/--force to override the default behavior and push all
     changesets on all branches.
 
     If -r/--rev is used, the specified revision and all its ancestors
     will be pushed to the remote repository.
 
     Please see :hg:`help urls` for important details about ``ssh://``
     URLs. If DESTINATION is omitted, a default path will be used.
 
     Returns 0 if push was successful, 1 if nothing to push.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     dest, branches = hg.parseurl(dest, opts.get('branch'))
     revs, checkout = hg.addbranchrevs(repo, repo, branches, opts.get('rev'))
     other = hg.repository(hg.remoteui(repo, opts), dest)
     ui.status(_('pushing to %s\n') % url.hidepassword(dest))
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
 
     repo._subtoppath = dest
     try:
         # push subrepos depth-first for coherent ordering
         c = repo['']
         subs = c.substate # only repos that are committed
         for s in sorted(subs):
             if not c.sub(s).push(opts.get('force')):
                 return False
     finally:
         del repo._subtoppath
     r = repo.push(other, opts.get('force'), revs=revs,
                   newbranch=opts.get('new_branch'))
     return r == 0
 
 def recover(ui, repo):
     """roll back an interrupted transaction
 
     Recover from an interrupted commit or pull.
 
     This command tries to fix the repository status after an
     interrupted operation. It should only be necessary when Mercurial
     suggests it.
 
     Returns 0 if successful, 1 if nothing to recover or verify fails.
     """
     if repo.recover():
         return hg.verify(repo)
     return 1
 
 def remove(ui, repo, *pats, **opts):
     """remove the specified files on the next commit
 
     Schedule the indicated files for removal from the repository.
 
     This only removes files from the current branch, not from the
     entire project history. -A/--after can be used to remove only
     files that have already been deleted, -f/--force can be used to
     force deletion, and -Af can be used to remove files from the next
     revision without deleting them from the working directory.
 
     The following table details the behavior of remove for different
     file states (columns) and option combinations (rows). The file
     states are Added [A], Clean [C], Modified [M] and Missing [!] (as
     reported by :hg:`status`). The actions are Warn, Remove (from
     branch) and Delete (from disk)::
 
              A  C  M  !
       none   W  RD W  R
       -f     R  RD RD R
       -A     W  W  W  R
       -Af    R  R  R  R
 
     This command schedules the files to be removed at the next commit.
     To undo a remove before that, see :hg:`revert`.
 
     Returns 0 on success, 1 if any warnings encountered.
     """
 
     ret = 0
     after, force = opts.get('after'), opts.get('force')
     if not pats and not after:
         raise util.Abort(_('no files specified'))
 
     m = cmdutil.match(repo, pats, opts)
     s = repo.status(match=m, clean=True)
     modified, added, deleted, clean = s[0], s[1], s[3], s[6]
 
     for f in m.files():
         if f not in repo.dirstate and not os.path.isdir(m.rel(f)):
             ui.warn(_('not removing %s: file is untracked\n') % m.rel(f))
             ret = 1
 
     if force:
         remove, forget = modified + deleted + clean, added
     elif after:
         remove, forget = deleted, []
         for f in modified + added + clean:
             ui.warn(_('not removing %s: file still exists (use -f'
                       ' to force removal)\n') % m.rel(f))
             ret = 1
     else:
         remove, forget = deleted + clean, []
         for f in modified:
             ui.warn(_('not removing %s: file is modified (use -f'
                       ' to force removal)\n') % m.rel(f))
             ret = 1
         for f in added:
             ui.warn(_('not removing %s: file has been marked for add (use -f'
                       ' to force removal)\n') % m.rel(f))
             ret = 1
 
     for f in sorted(remove + forget):
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     repo[None].forget(forget)
     repo[None].remove(remove, unlink=not after)
     return ret
 
 def rename(ui, repo, *pats, **opts):
     """rename files; equivalent of copy + remove
 
     Mark dest as copies of sources; mark sources for deletion. If dest
     is a directory, copies are put in that directory. If dest is a
     file, there can only be one source.
 
     By default, this command copies the contents of files as they
     exist in the working directory. If invoked with -A/--after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect at the next commit. To undo a rename
     before that, see :hg:`revert`.
 
     Returns 0 on success, 1 if errors are encountered.
     """
     wlock = repo.wlock(False)
     try:
         return cmdutil.copy(ui, repo, pats, opts, rename=True)
     finally:
         wlock.release()
 
 def resolve(ui, repo, *pats, **opts):
     """redo merges or set/view the merge status of files
 
     Merges with unresolved conflicts are often the result of
     non-interactive merging using the ``internal:merge`` configuration
     setting, or a command-line merge tool like ``diff3``. The resolve
     command is used to manage the files involved in a merge, after
     :hg:`merge` has been run, and before :hg:`commit` is run (i.e. the
     working directory must have two parents).
 
     The resolve command can be used in the following ways:
 
     - :hg:`resolve [--tool TOOL] FILE...`: attempt to re-merge the specified
       files, discarding any previous merge attempts. Re-merging is not
       performed for files already marked as resolved. Use ``--all/-a``
       to selects all unresolved files. ``--tool`` can be used to specify
       the merge tool used for the given files. It overrides the HGMERGE
       environment variable and your configuration files.
 
     - :hg:`resolve -m [FILE]`: mark a file as having been resolved
       (e.g. after having manually fixed-up the files). The default is
       to mark all unresolved files.
 
     - :hg:`resolve -u [FILE]...`: mark a file as unresolved. The
       default is to mark all resolved files.
 
     - :hg:`resolve -l`: list files which had or still have conflicts.
       In the printed list, ``U`` = unresolved and ``R`` = resolved.
 
     Note that Mercurial will not let you commit files with unresolved
     merge conflicts. You must use :hg:`resolve -m ...` before you can
     commit after a conflicting merge.
 
     Returns 0 on success, 1 if any files fail a resolve attempt.
     """
 
     all, mark, unmark, show, nostatus = \
         [opts.get(o) for o in 'all mark unmark list no_status'.split()]
 
     if (show and (mark or unmark)) or (mark and unmark):
         raise util.Abort(_("too many options specified"))
     if pats and all:
         raise util.Abort(_("can't specify --all and patterns"))
     if not (all or pats or show or mark or unmark):
         raise util.Abort(_('no files or directories specified; '
                            'use --all to remerge all files'))
 
     ms = mergemod.mergestate(repo)
     m = cmdutil.match(repo, pats, opts)
     ret = 0
 
     for f in ms:
         if m(f):
             if show:
                 if nostatus:
                     ui.write("%s\n" % f)
                 else:
                     ui.write("%s %s\n" % (ms[f].upper(), f),
                              label='resolve.' +
                              {'u': 'unresolved', 'r': 'resolved'}[ms[f]])
             elif mark:
                 ms.mark(f, "r")
             elif unmark:
                 ms.mark(f, "u")
             else:
                 wctx = repo[None]
                 mctx = wctx.parents()[-1]
 
                 # backup pre-resolve (merge uses .orig for its own purposes)
                 a = repo.wjoin(f)
                 util.copyfile(a, a + ".resolve")
 
                 try:
                     # resolve file
                     ui.setconfig('ui', 'forcemerge', opts.get('tool', ''))
                     if ms.resolve(f, wctx, mctx):
                         ret = 1
                 finally:
                     ui.setconfig('ui', 'forcemerge', '')
 
                 # replace filemerge's .orig file with our resolve file
                 util.rename(a + ".resolve", a + ".orig")
 
     ms.commit()
     return ret
 
 def revert(ui, repo, *pats, **opts):
     """restore individual files or directories to an earlier state
 
     .. note::
        This command is most likely not what you are looking for.
        Revert will partially overwrite content in the working
        directory without changing the working directory parents. Use
        :hg:`update -r rev` to check out earlier revisions, or
        :hg:`update --clean .` to undo a merge which has added another
        parent.
 
     With no revision specified, revert the named files or directories
     to the contents they had in the parent of the working directory.
     This restores the contents of the affected files to an unmodified
     state and unschedules adds, removes, copies, and renames. If the
     working directory has two parents, you must explicitly specify a
     revision.
 
     Using the -r/--rev option, revert the given files or directories
     to their contents as of a specific revision. This can be helpful
     to "roll back" some or all of an earlier change. See :hg:`help
     dates` for a list of formats valid for -d/--date.
 
     Revert modifies the working directory. It does not commit any
     changes, or change the parent of the working directory. If you
     revert to a revision other than the parent of the working
     directory, the reverted files will thus appear modified
     afterwards.
 
     If a file has been deleted, it is restored. If the executable mode
     of a file was changed, it is reset.
 
     If names are given, all files matching the names are reverted.
     If no arguments are given, no files are reverted.
 
     Modified files are saved with a .orig suffix before reverting.
     To disable these backups, use --no-backup.
 
     Returns 0 on success.
     """
 
     if opts.get("date"):
         if opts.get("rev"):
             raise util.Abort(_("you can't specify a revision and a date"))
         opts["rev"] = cmdutil.finddate(ui, repo, opts["date"])
 
     parent, p2 = repo.dirstate.parents()
     if not opts.get('rev') and p2 != nullid:
         raise util.Abort(_('uncommitted merge - '
                            'use "hg update", see "hg help revert"'))
 
     if not pats and not opts.get('all'):
         raise util.Abort(_('no files or directories specified; '
                            'use --all to revert the whole repo'))
 
     ctx = cmdutil.revsingle(repo, opts.get('rev'))
     node = ctx.node()
     mf = ctx.manifest()
     if node == parent:
         pmf = mf
     else:
         pmf = None
 
     # need all matching names in dirstate and manifest of target rev,
     # so have to walk both. do not print errors if files exist in one
     # but not other.
 
     names = {}
 
     wlock = repo.wlock()
     try:
         # walk dirstate.
 
         m = cmdutil.match(repo, pats, opts)
         m.bad = lambda x, y: False
         for abs in repo.walk(m):
             names[abs] = m.rel(abs), m.exact(abs)
 
         # walk target manifest.
 
         def badfn(path, msg):
             if path in names:
                 return
             path_ = path + '/'
             for f in names:
                 if f.startswith(path_):
                     return
             ui.warn("%s: %s\n" % (m.rel(path), msg))
 
         m = cmdutil.match(repo, pats, opts)
         m.bad = badfn
         for abs in repo[node].walk(m):
             if abs not in names:
                 names[abs] = m.rel(abs), m.exact(abs)
 
         m = cmdutil.matchfiles(repo, names)
         changes = repo.status(match=m)[:4]
         modified, added, removed, deleted = map(set, changes)
 
         # if f is a rename, also revert the source
         cwd = repo.getcwd()
         for f in added:
             src = repo.dirstate.copied(f)
             if src and src not in names and repo.dirstate[src] == 'r':
                 removed.add(src)
                 names[src] = (repo.pathto(src, cwd), True)
 
         def removeforget(abs):
             if repo.dirstate[abs] == 'a':
                 return _('forgetting %s\n')
             return _('removing %s\n')
 
         revert = ([], _('reverting %s\n'))
         add = ([], _('adding %s\n'))
         remove = ([], removeforget)
         undelete = ([], _('undeleting %s\n'))
 
         disptable = (
             # dispatch table:
             #   file state
             #   action if in target manifest
             #   action if not in target manifest
             #   make backup if in target manifest
             #   make backup if not in target manifest
             (modified, revert, remove, True, True),
             (added, revert, remove, True, False),
             (removed, undelete, None, False, False),
             (deleted, revert, remove, False, False),
             )
 
         for abs, (rel, exact) in sorted(names.items()):
             mfentry = mf.get(abs)
             target = repo.wjoin(abs)
             def handle(xlist, dobackup):
                 xlist[0].append(abs)
                 if (dobackup and not opts.get('no_backup') and
                     os.path.lexists(target)):
                     bakname = "%s.orig" % rel
                     ui.note(_('saving current version of %s as %s\n') %
                             (rel, bakname))
                     if not opts.get('dry_run'):
                         util.rename(target, bakname)
                 if ui.verbose or not exact:
                     msg = xlist[1]
                     if not isinstance(msg, basestring):
                         msg = msg(abs)
                     ui.status(msg % rel)
             for table, hitlist, misslist, backuphit, backupmiss in disptable:
                 if abs not in table:
                     continue
                 # file has changed in dirstate
                 if mfentry:
                     handle(hitlist, backuphit)
                 elif misslist is not None:
                     handle(misslist, backupmiss)
                 break
             else:
                 if abs not in repo.dirstate:
                     if mfentry:
                         handle(add, True)
                     elif exact:
                         ui.warn(_('file not managed: %s\n') % rel)
                     continue
                 # file has not changed in dirstate
                 if node == parent:
                     if exact:
                         ui.warn(_('no changes needed to %s\n') % rel)
                     continue
                 if pmf is None:
                     # only need parent manifest in this unlikely case,
                     # so do not read by default
                     pmf = repo[parent].manifest()
                 if abs in pmf:
                     if mfentry:
                         # if version of file is same in parent and target
                         # manifests, do nothing
                         if (pmf[abs] != mfentry or
                             pmf.flags(abs) != mf.flags(abs)):
                             handle(revert, False)
                     else:
                         handle(remove, False)
 
         if not opts.get('dry_run'):
             def checkout(f):
                 fc = ctx[f]
                 repo.wwrite(f, fc.data(), fc.flags())
 
             audit_path = util.path_auditor(repo.root)
             for f in remove[0]:
                 if repo.dirstate[f] == 'a':
                     repo.dirstate.forget(f)
                     continue
                 audit_path(f)
                 try:
                     util.unlinkpath(repo.wjoin(f))
                 except OSError:
                     pass
                 repo.dirstate.remove(f)
 
             normal = None
             if node == parent:
                 # We're reverting to our parent. If possible, we'd like status
                 # to report the file as clean. We have to use normallookup for
                 # merges to avoid losing information about merged/dirty files.
                 if p2 != nullid:
                     normal = repo.dirstate.normallookup
                 else:
                     normal = repo.dirstate.normal
             for f in revert[0]:
                 checkout(f)
                 if normal:
                     normal(f)
 
             for f in add[0]:
                 checkout(f)
                 repo.dirstate.add(f)
 
             normal = repo.dirstate.normallookup
             if node == parent and p2 == nullid:
                 normal = repo.dirstate.normal
             for f in undelete[0]:
                 checkout(f)
                 normal(f)
 
     finally:
         wlock.release()
 
 def rollback(ui, repo, **opts):
     """roll back the last transaction (dangerous)
 
     This command should be used with care. There is only one level of
     rollback, and there is no way to undo a rollback. It will also
     restore the dirstate at the time of the last transaction, losing
     any dirstate changes since that time. This command does not alter
     the working directory.
 
     Transactions are used to encapsulate the effects of all commands
     that create new changesets or propagate existing changesets into a
     repository. For example, the following commands are transactional,
     and their effects can be rolled back:
 
     - commit
     - import
     - pull
     - push (with this repository as the destination)
     - unbundle
 
     This command is not intended for use on public repositories. Once
     changes are visible for pull by other users, rolling a transaction
     back locally is ineffective (someone else may already have pulled
     the changes). Furthermore, a race is possible with readers of the
     repository; for example an in-progress pull from the repository
     may fail if a rollback is performed.
 
     Returns 0 on success, 1 if no rollback data is available.
     """
     return repo.rollback(opts.get('dry_run'))
 
 def root(ui, repo):
     """print the root (top) of the current working directory
 
     Print the root directory of the current repository.
 
     Returns 0 on success.
     """
     ui.write(repo.root + "\n")
 
 def serve(ui, repo, **opts):
     """start stand-alone webserver
 
     Start a local HTTP repository browser and pull server. You can use
     this for ad-hoc sharing and browsing of repositories. It is
     recommended to use a real web server to serve a repository for
     longer periods of time.
 
     Please note that the server does not implement access control.
     This means that, by default, anybody can read from the server and
     nobody can write to it by default. Set the ``web.allow_push``
     option to ``*`` to allow everybody to push to the server. You
     should use a real web server if you need to authenticate users.
 
     By default, the server logs accesses to stdout and errors to
     stderr. Use the -A/--accesslog and -E/--errorlog options to log to
     files.
 
     To have the server choose a free port number to listen on, specify
     a port number of 0; in this case, the server will print the port
     number it uses.
 
     Returns 0 on success.
     """
 
     if opts["stdio"]:
         if repo is None:
             raise error.RepoError(_("There is no Mercurial repository here"
                               " (.hg not found)"))
         s = sshserver.sshserver(ui, repo)
         s.serve_forever()
 
     # this way we can check if something was given in the command-line
     if opts.get('port'):
         opts['port'] = util.getport(opts.get('port'))
 
     baseui = repo and repo.baseui or ui
     optlist = ("name templates style address port prefix ipv6"
                " accesslog errorlog certificate encoding")
     for o in optlist.split():
         val = opts.get(o, '')
         if val in (None, ''): # should check against default options instead
             continue
         baseui.setconfig("web", o, val)
         if repo and repo.ui != baseui:
             repo.ui.setconfig("web", o, val)
 
     o = opts.get('web_conf') or opts.get('webdir_conf')
     if not o:
         if not repo:
             raise error.RepoError(_("There is no Mercurial repository"
                                     " here (.hg not found)"))
         o = repo.root
 
     app = hgweb.hgweb(o, baseui=ui)
 
     class service(object):
         def init(self):
             util.set_signal_handler()
             self.httpd = hgweb.server.create_server(ui, app)
 
             if opts['port'] and not ui.verbose:
                 return
 
             if self.httpd.prefix:
                 prefix = self.httpd.prefix.strip('/') + '/'
             else:
                 prefix = ''
 
             port = ':%d' % self.httpd.port
             if port == ':80':
                 port = ''
 
             bindaddr = self.httpd.addr
             if bindaddr == '0.0.0.0':
                 bindaddr = '*'
             elif ':' in bindaddr: # IPv6
                 bindaddr = '[%s]' % bindaddr
 
             fqaddr = self.httpd.fqaddr
             if ':' in fqaddr:
                 fqaddr = '[%s]' % fqaddr
             if opts['port']:
                 write = ui.status
             else:
                 write = ui.write
             write(_('listening at http://%s%s/%s (bound to %s:%d)\n') %
                   (fqaddr, port, prefix, bindaddr, self.httpd.port))
 
         def run(self):
             self.httpd.serve_forever()
 
     service = service()
 
     cmdutil.service(opts, initfn=service.init, runfn=service.run)
 
 def status(ui, repo, *pats, **opts):
     """show changed files in the working directory
 
     Show status of files in the repository. If names are given, only
     files that match are shown. Files that are clean or ignored or
     the source of a copy/move operation, are not listed unless
     -c/--clean, -i/--ignored, -C/--copies or -A/--all are given.
     Unless options described with "show only ..." are given, the
     options -mardu are used.
 
     Option -q/--quiet hides untracked (unknown and ignored) files
     unless explicitly requested with -u/--unknown or -i/--ignored.
 
     .. note::
        status may appear to disagree with diff if permissions have
        changed or a merge has occurred. The standard diff format does
        not report permission changes and diff only reports changes
        relative to one merge parent.
 
     If one revision is given, it is used as the base revision.
     If two revisions are given, the differences between them are
     shown. The --change option can also be used as a shortcut to list
     the changed files of a revision from its first parent.
 
     The codes used to show the status of files are::
 
       M = modified
       A = added
       R = removed
       C = clean
       ! = missing (deleted by non-hg command, but still tracked)
       ? = not tracked
       I = ignored
         = origin of the previous file listed as A (added)
 
     Returns 0 on success.
     """
 
     revs = opts.get('rev')
     change = opts.get('change')
 
     if revs and change:
         msg = _('cannot specify --rev and --change at the same time')
         raise util.Abort(msg)
     elif change:
         node2 = repo.lookup(change)
         node1 = repo[node2].parents()[0].node()
     else:
         node1, node2 = cmdutil.revpair(repo, revs)
 
     cwd = (pats and repo.getcwd()) or ''
     end = opts.get('print0') and '\0' or '\n'
     copy = {}
     states = 'modified added removed deleted unknown ignored clean'.split()
     show = [k for k in states if opts.get(k)]
     if opts.get('all'):
         show += ui.quiet and (states[:4] + ['clean']) or states
     if not show:
         show = ui.quiet and states[:4] or states[:5]
 
     stat = repo.status(node1, node2, cmdutil.match(repo, pats, opts),
                        'ignored' in show, 'clean' in show, 'unknown' in show,
                        opts.get('subrepos'))
     changestates = zip(states, 'MAR!?IC', stat)
 
     if (opts.get('all') or opts.get('copies')) and not opts.get('no_status'):
         ctxn = repo[nullid]
         ctx1 = repo[node1]
         ctx2 = repo[node2]
         added = stat[1]
         if node2 is None:
             added = stat[0] + stat[1] # merged?
 
         for k, v in copies.copies(repo, ctx1, ctx2, ctxn)[0].iteritems():
             if k in added:
                 copy[k] = v
             elif v in added:
                 copy[v] = k
 
     for state, char, files in changestates:
         if state in show:
             format = "%s %%s%s" % (char, end)
             if opts.get('no_status'):
                 format = "%%s%s" % end
 
             for f in files:
                 ui.write(format % repo.pathto(f, cwd),
                          label='status.' + state)
                 if f in copy:
                     ui.write('  %s%s' % (repo.pathto(copy[f], cwd), end),
                              label='status.copied')
 
 def summary(ui, repo, **opts):
     """summarize working directory state
 
     This generates a brief summary of the working directory state,
     including parents, branch, commit status, and available updates.
 
     With the --remote option, this will check the default paths for
     incoming and outgoing changes. This can be time-consuming.
 
     Returns 0 on success.
     """
 
     ctx = repo[None]
     parents = ctx.parents()
     pnode = parents[0].node()
 
     for p in parents:
         # label with log.changeset (instead of log.parent) since this
         # shows a working directory parent *changeset*:
         ui.write(_('parent: %d:%s ') % (p.rev(), str(p)),
                  label='log.changeset')
         ui.write(' '.join(p.tags()), label='log.tag')
         if p.rev() == -1:
             if not len(repo):
                 ui.write(_(' (empty repository)'))
             else:
                 ui.write(_(' (no revision checked out)'))
         ui.write('\n')
         if p.description():
             ui.status(' ' + p.description().splitlines()[0].strip() + '\n',
                       label='log.summary')
 
     branch = ctx.branch()
     bheads = repo.branchheads(branch)
     m = _('branch: %s\n') % branch
     if branch != 'default':
         ui.write(m, label='log.branch')
     else:
         ui.status(m, label='log.branch')
 
     st = list(repo.status(unknown=True))[:6]
 
     c = repo.dirstate.copies()
     copied, renamed = [], []
     for d, s in c.iteritems():
         if s in st[2]:
             st[2].remove(s)
             renamed.append(d)
         else:
             copied.append(d)
         if d in st[1]:
             st[1].remove(d)
     st.insert(3, renamed)
     st.insert(4, copied)
 
     ms = mergemod.mergestate(repo)
     st.append([f for f in ms if ms[f] == 'u'])
 
     subs = [s for s in ctx.substate if ctx.sub(s).dirty()]
     st.append(subs)
 
     labels = [ui.label(_('%d modified'), 'status.modified'),
               ui.label(_('%d added'), 'status.added'),
               ui.label(_('%d removed'), 'status.removed'),
               ui.label(_('%d renamed'), 'status.copied'),
               ui.label(_('%d copied'), 'status.copied'),
               ui.label(_('%d deleted'), 'status.deleted'),
               ui.label(_('%d unknown'), 'status.unknown'),
               ui.label(_('%d ignored'), 'status.ignored'),
               ui.label(_('%d unresolved'), 'resolve.unresolved'),
               ui.label(_('%d subrepos'), 'status.modified')]
     t = []
     for s, l in zip(st, labels):
         if s:
             t.append(l % len(s))
 
     t = ', '.join(t)
     cleanworkdir = False
 
     if len(parents) > 1:
         t += _(' (merge)')
     elif branch != parents[0].branch():
         t += _(' (new branch)')
     elif (parents[0].extra().get('close') and
           pnode in repo.branchheads(branch, closed=True)):
         t += _(' (head closed)')
     elif not (st[0] or st[1] or st[2] or st[3] or st[4] or st[9]):
         t += _(' (clean)')
         cleanworkdir = True
     elif pnode not in bheads:
         t += _(' (new branch head)')
 
     if cleanworkdir:
         ui.status(_('commit: %s\n') % t.strip())
     else:
         ui.write(_('commit: %s\n') % t.strip())
 
     # all ancestors of branch heads - all ancestors of parent = new csets
     new = [0] * len(repo)
     cl = repo.changelog
     for a in [cl.rev(n) for n in bheads]:
         new[a] = 1
     for a in cl.ancestors(*[cl.rev(n) for n in bheads]):
         new[a] = 1
     for a in [p.rev() for p in parents]:
         if a >= 0:
             new[a] = 0
     for a in cl.ancestors(*[p.rev() for p in parents]):
         new[a] = 0
     new = sum(new)
 
     if new == 0:
         ui.status(_('update: (current)\n'))
     elif pnode not in bheads:
         ui.write(_('update: %d new changesets (update)\n') % new)
     else:
         ui.write(_('update: %d new changesets, %d branch heads (merge)\n') %
                  (new, len(bheads)))
 
     if opts.get('remote'):
         t = []
         source, branches = hg.parseurl(ui.expandpath('default'))
         other = hg.repository(hg.remoteui(repo, {}), source)
         revs, checkout = hg.addbranchrevs(repo, other, branches, opts.get('rev'))
         ui.debug('comparing with %s\n' % url.hidepassword(source))
         repo.ui.pushbuffer()
         common, incoming, rheads = discovery.findcommonincoming(repo, other)
         repo.ui.popbuffer()
         if incoming:
             t.append(_('1 or more incoming'))
 
         dest, branches = hg.parseurl(ui.expandpath('default-push', 'default'))
         revs, checkout = hg.addbranchrevs(repo, repo, branches, None)
         other = hg.repository(hg.remoteui(repo, {}), dest)
         ui.debug('comparing with %s\n' % url.hidepassword(dest))
         repo.ui.pushbuffer()
         o = discovery.findoutgoing(repo, other)
         repo.ui.popbuffer()
         o = repo.changelog.nodesbetween(o, None)[0]
         if o:
             t.append(_('%d outgoing') % len(o))
 
         if t:
             ui.write(_('remote: %s\n') % (', '.join(t)))
         else:
             ui.status(_('remote: (synced)\n'))
 
 def tag(ui, repo, name1, *names, **opts):
     """add one or more tags for the current or given revision
 
     Name a particular revision using <name>.
 
     Tags are used to name particular revisions of the repository and are
     very useful to compare different revisions, to go back to significant
     earlier versions or to mark branch points as releases, etc. Changing
     an existing tag is normally disallowed; use -f/--force to override.
 
     If no revision is given, the parent of the working directory is
     used, or tip if no revision is checked out.
 
     To facilitate version control, distribution, and merging of tags,
     they are stored as a file named ".hgtags" which is managed similarly
     to other project files and can be hand-edited if necessary. This
     also means that tagging creates a new commit. The file
     ".hg/localtags" is used for local tags (not shared among
     repositories).
 
     Tag commits are usually made at the head of a branch. If the parent
     of the working directory is not a branch head, :hg:`tag` aborts; use
     -f/--force to force the tag commit to be based on a non-head
     changeset.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Since tag names have priority over branch names during revision
     lookup, using an existing branch name as a tag name is discouraged.
 
     Returns 0 on success.
     """
 
     rev_ = "."
     names = [t.strip() for t in (name1,) + names]
     if len(names) != len(set(names)):
         raise util.Abort(_('tag names must be unique'))
     for n in names:
         if n in ['tip', '.', 'null']:
             raise util.Abort(_('the name \'%s\' is reserved') % n)
         if not n:
             raise util.Abort(_('tag names cannot consist entirely of whitespace'))
     if opts.get('rev') and opts.get('remove'):
         raise util.Abort(_("--rev and --remove are incompatible"))
     if opts.get('rev'):
         rev_ = opts['rev']
     message = opts.get('message')
     if opts.get('remove'):
         expectedtype = opts.get('local') and 'local' or 'global'
         for n in names:
             if not repo.tagtype(n):
                 raise util.Abort(_('tag \'%s\' does not exist') % n)
             if repo.tagtype(n) != expectedtype:
                 if expectedtype == 'global':
                     raise util.Abort(_('tag \'%s\' is not a global tag') % n)
                 else:
                     raise util.Abort(_('tag \'%s\' is not a local tag') % n)
         rev_ = nullid
         if not message:
             # we don't translate commit messages
             message = 'Removed tag %s' % ', '.join(names)
     elif not opts.get('force'):
         for n in names:
             if n in repo.tags():
                 raise util.Abort(_('tag \'%s\' already exists '
                                    '(use -f to force)') % n)
     if not opts.get('local'):
         p1, p2 = repo.dirstate.parents()
         if p2 != nullid:
             raise util.Abort(_('uncommitted merge'))
         bheads = repo.branchheads()
         if not opts.get('force') and bheads and p1 not in bheads:
             raise util.Abort(_('not at a branch head (use -f to force)'))
     r = cmdutil.revsingle(repo, rev_).node()
 
     if not message:
         # we don't translate commit messages
         message = ('Added tag %s for changeset %s' %
                    (', '.join(names), short(r)))
 
     date = opts.get('date')
     if date:
         date = util.parsedate(date)
 
     if opts.get('edit'):
         message = ui.edit(message, ui.username())
 
     repo.tag(names, r, message, opts.get('local'), opts.get('user'), date)
 
 def tags(ui, repo):
     """list repository tags
 
     This lists both regular and local tags. When the -v/--verbose
     switch is used, a third column "local" is printed for local tags.
 
     Returns 0 on success.
     """
 
     hexfunc = ui.debugflag and hex or short
     tagtype = ""
 
     for t, n in reversed(repo.tagslist()):
         if ui.quiet:
             ui.write("%s\n" % t)
             continue
 
         try:
             hn = hexfunc(n)
             r = "%5d:%s" % (repo.changelog.rev(n), hn)
         except error.LookupError:
             r = "    ?:%s" % hn
         else:
             spaces = " " * (30 - encoding.colwidth(t))
             if ui.verbose:
                 if repo.tagtype(t) == 'local':
                     tagtype = " local"
                 else:
                     tagtype = ""
             ui.write("%s%s %s%s\n" % (t, spaces, r, tagtype))
 
 def tip(ui, repo, **opts):
     """show the tip revision
 
     The tip revision (usually just called the tip) is the changeset
     most recently added to the repository (and therefore the most
     recently changed head).
 
     If you have just made a commit, that commit will be the tip. If
     you have just pulled changes from another repository, the tip of
     that repository becomes the current tip. The "tip" tag is special
     and cannot be renamed or assigned to a different changeset.
 
     Returns 0 on success.
     """
     displayer = cmdutil.show_changeset(ui, repo, opts)
     displayer.show(repo[len(repo) - 1])
     displayer.close()
 
 def unbundle(ui, repo, fname1, *fnames, **opts):
     """apply one or more changegroup files
 
     Apply one or more compressed changegroup files generated by the
     bundle command.
 
     Returns 0 on success, 1 if an update has unresolved files.
     """
     fnames = (fname1,) + fnames
 
     lock = repo.lock()
     try:
         for fname in fnames:
             f = url.open(ui, fname)
             gen = changegroup.readbundle(f, fname)
             modheads = repo.addchangegroup(gen, 'unbundle', 'bundle:' + fname,
                                            lock=lock)
     finally:
         lock.release()
 
     return postincoming(ui, repo, modheads, opts.get('update'), None)
 
 def update(ui, repo, node=None, rev=None, clean=False, date=None, check=False):
     """update working directory (or switch revisions)
 
     Update the repository's working directory to the specified
     changeset. If no changeset is specified, update to the tip of the
     current named branch.
 
     If the changeset is not a descendant of the working directory's
     parent, the update is aborted. With the -c/--check option, the
     working directory is checked for uncommitted changes; if none are
     found, the working directory is updated to the specified
     changeset.
 
     The following rules apply when the working directory contains
     uncommitted changes:
 
     1. If neither -c/--check nor -C/--clean is specified, and if
        the requested changeset is an ancestor or descendant of
        the working directory's parent, the uncommitted changes
        are merged into the requested changeset and the merged
        result is left uncommitted. If the requested changeset is
        not an ancestor or descendant (that is, it is on another
        branch), the update is aborted and the uncommitted changes
        are preserved.
 
     2. With the -c/--check option, the update is aborted and the
        uncommitted changes are preserved.
 
     3. With the -C/--clean option, uncommitted changes are discarded and
        the working directory is updated to the requested changeset.
 
     Use null as the changeset to remove the working directory (like
     :hg:`clone -U`).
 
     If you want to update just one file to an older changeset, use
     :hg:`revert`.
 
     See :hg:`help dates` for a list of formats valid for -d/--date.
 
     Returns 0 on success, 1 if there are unresolved files.
     """
     if rev and node:
         raise util.Abort(_("please specify just one revision"))
 
     if not rev:
         rev = node
 
     rev = cmdutil.revsingle(repo, rev, rev).rev()
 
     if check and clean:
         raise util.Abort(_("cannot specify both -c/--check and -C/--clean"))
 
     if check:
         # we could use dirty() but we can ignore merge and branch trivia
         c = repo[None]
         if c.modified() or c.added() or c.removed():
             raise util.Abort(_("uncommitted local changes"))
 
     if date:
         if rev:
             raise util.Abort(_("you can't specify a revision and a date"))
         rev = cmdutil.finddate(ui, repo, date)
 
     if clean or check:
         return hg.clean(repo, rev)
     else:
         return hg.update(repo, rev)
 
 def verify(ui, repo):
     """verify the integrity of the repository
 
     Verify the integrity of the current repository.
 
     This will perform an extensive check of the repository's
     integrity, validating the hashes and checksums of each entry in
     the changelog, manifest, and tracked files, as well as the
     integrity of their crosslinks and indices.
 
     Returns 0 on success, 1 if errors are encountered.
     """
     return hg.verify(repo)
 
 def version_(ui):
     """output version and copyright information"""
     ui.write(_("Mercurial Distributed SCM (version %s)\n")
              % util.version())
     ui.status(_(
         "(see http://mercurial.selenic.com for more information)\n"
         "\nCopyright (C) 2005-2010 Matt Mackall and others\n"
         "This is free software; see the source for copying conditions. "
         "There is NO\nwarranty; "
         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     ))
 
 # Command options and aliases are listed here, alphabetically
 
 globalopts = [
     ('R', 'repository', '',
      _('repository root directory or name of overlay bundle file'),
      _('REPO')),
     ('', 'cwd', '',
      _('change working directory'), _('DIR')),
     ('y', 'noninteractive', None,
      _('do not prompt, assume \'yes\' for any required answers')),
     ('q', 'quiet', None, _('suppress output')),
     ('v', 'verbose', None, _('enable additional output')),
     ('', 'config', [],
      _('set/override config option (use \'section.name=value\')'),
      _('CONFIG')),
     ('', 'debug', None, _('enable debugging output')),
     ('', 'debugger', None, _('start debugger')),
     ('', 'encoding', encoding.encoding, _('set the charset encoding'),
      _('ENCODE')),
     ('', 'encodingmode', encoding.encodingmode,
      _('set the charset encoding mode'), _('MODE')),
     ('', 'traceback', None, _('always print a traceback on exception')),
     ('', 'time', None, _('time how long the command takes')),
     ('', 'profile', None, _('print command execution profile')),
     ('', 'version', None, _('output version information and exit')),
     ('h', 'help', None, _('display help and exit')),
 ]
 
 dryrunopts = [('n', 'dry-run', None,
                _('do not perform actions, just print output'))]
 
 remoteopts = [
     ('e', 'ssh', '',
      _('specify ssh command to use'), _('CMD')),
     ('', 'remotecmd', '',
      _('specify hg command to run on the remote side'), _('CMD')),
+    ('', 'insecure', None,
+     _('do not verify server certificate (ignoring web.cacerts config)')),
 ]
 
 walkopts = [
     ('I', 'include', [],
      _('include names matching the given patterns'), _('PATTERN')),
     ('X', 'exclude', [],
      _('exclude names matching the given patterns'), _('PATTERN')),
 ]
 
 commitopts = [
     ('m', 'message', '',
      _('use text as commit message'), _('TEXT')),
     ('l', 'logfile', '',
      _('read commit message from file'), _('FILE')),
 ]
 
 commitopts2 = [
     ('d', 'date', '',
      _('record datecode as commit date'), _('DATE')),
     ('u', 'user', '',
      _('record the specified user as committer'), _('USER')),
 ]
 
 templateopts = [
     ('', 'style', '',
      _('display using template map file'), _('STYLE')),
     ('', 'template', '',
      _('display with template'), _('TEMPLATE')),
 ]
 
 logopts = [
     ('p', 'patch', None, _('show patch')),
     ('g', 'git', None, _('use git extended diff format')),
     ('l', 'limit', '',
      _('limit number of changes displayed'), _('NUM')),
     ('M', 'no-merges', None, _('do not show merges')),
     ('', 'stat', None, _('output diffstat-style summary of changes')),
 ] + templateopts
 
 diffopts = [
     ('a', 'text', None, _('treat all files as text')),
     ('g', 'git', None, _('use git extended diff format')),
     ('', 'nodates', None, _('omit dates from diff headers'))
 ]
 
 diffopts2 = [
     ('p', 'show-function', None, _('show which function each change is in')),
     ('', 'reverse', None, _('produce a diff that undoes the changes')),
     ('w', 'ignore-all-space', None,
      _('ignore white space when comparing lines')),
     ('b', 'ignore-space-change', None,
      _('ignore changes in the amount of white space')),
     ('B', 'ignore-blank-lines', None,
      _('ignore changes whose lines are all blank')),
     ('U', 'unified', '',
      _('number of lines of context to show'), _('NUM')),
     ('', 'stat', None, _('output diffstat-style summary of changes')),
 ]
 
 similarityopts = [
     ('s', 'similarity', '',
      _('guess renamed files by similarity (0<=s<=100)'), _('SIMILARITY'))
 ]
 
 subrepoopts = [
     ('S', 'subrepos', None,
      _('recurse into subrepositories'))
 ]
 
 table = {
     "^add": (add, walkopts + subrepoopts + dryrunopts,
              _('[OPTION]... [FILE]...')),
     "addremove":
         (addremove, similarityopts + walkopts + dryrunopts,
          _('[OPTION]... [FILE]...')),
     "^annotate|blame":
         (annotate,
          [('r', 'rev', '',
            _('annotate the specified revision'), _('REV')),
           ('', 'follow', None,
            _('follow copies/renames and list the filename (DEPRECATED)')),
           ('', 'no-follow', None, _("don't follow copies and renames")),
           ('a', 'text', None, _('treat all files as text')),
           ('u', 'user', None, _('list the author (long with -v)')),
           ('f', 'file', None, _('list the filename')),
           ('d', 'date', None, _('list the date (short with -q)')),
           ('n', 'number', None, _('list the revision number (default)')),
           ('c', 'changeset', None, _('list the changeset')),
           ('l', 'line-number', None,
            _('show line number at the first appearance'))
          ] + walkopts,
          _('[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...')),
     "archive":
         (archive,
          [('', 'no-decode', None, _('do not pass files through decoders')),
           ('p', 'prefix', '',
            _('directory prefix for files in archive'), _('PREFIX')),
           ('r', 'rev', '',
            _('revision to distribute'), _('REV')),
           ('t', 'type', '',
            _('type of distribution to create'), _('TYPE')),
          ] + subrepoopts + walkopts,
          _('[OPTION]... DEST')),
     "backout":
         (backout,
          [('', 'merge', None,
            _('merge with old dirstate parent after backout')),
           ('', 'parent', '',
            _('parent to choose when backing out merge'), _('REV')),
           ('t', 'tool', '',
            _('specify merge tool')),
           ('r', 'rev', '',
            _('revision to backout'), _('REV')),
          ] + walkopts + commitopts + commitopts2,
          _('[OPTION]... [-r] REV')),
     "bisect":
         (bisect,
          [('r', 'reset', False, _('reset bisect state')),
           ('g', 'good', False, _('mark changeset good')),
           ('b', 'bad', False, _('mark changeset bad')),
           ('s', 'skip', False, _('skip testing changeset')),
           ('c', 'command', '',
            _('use command to check changeset state'), _('CMD')),
           ('U', 'noupdate', False, _('do not update to target'))],
          _("[-gbsr] [-U] [-c CMD] [REV]")),
     "branch":
         (branch,
          [('f', 'force', None,
            _('set branch name even if it shadows an existing branch')),
           ('C', 'clean', None, _('reset branch name to parent branch name'))],
          _('[-fC] [NAME]')),
     "branches":
         (branches,
          [('a', 'active', False,
            _('show only branches that have unmerged heads')),
           ('c', 'closed', False,
            _('show normal and closed branches'))],
          _('[-ac]')),
     "bundle":
         (bundle,
          [('f', 'force', None,
            _('run even when the destination is unrelated')),
           ('r', 'rev', [],
            _('a changeset intended to be added to the destination'),
            _('REV')),
           ('b', 'branch', [],
            _('a specific branch you would like to bundle'),
            _('BRANCH')),
           ('', 'base', [],
            _('a base changeset assumed to be available at the destination'),
            _('REV')),
           ('a', 'all', None, _('bundle all changesets in the repository')),
           ('t', 'type', 'bzip2',
            _('bundle compression type to use'), _('TYPE')),
          ] + remoteopts,
          _('[-f] [-t TYPE] [-a] [-r REV]... [--base REV]... FILE [DEST]')),
     "cat":
         (cat,
          [('o', 'output', '',
           _('print output to file with formatted name'), _('FORMAT')),
           ('r', 'rev', '',
            _('print the given revision'), _('REV')),
           ('', 'decode', None, _('apply any matching decode filter')),
          ] + walkopts,
          _('[OPTION]... FILE...')),
     "^clone":
         (clone,
          [('U', 'noupdate', None,
           _('the clone will include an empty working copy (only a repository)')),
           ('u', 'updaterev', '',
            _('revision, tag or branch to check out'), _('REV')),
           ('r', 'rev', [],
            _('include the specified changeset'), _('REV')),
           ('b', 'branch', [],
            _('clone only the specified branch'), _('BRANCH')),
           ('', 'pull', None, _('use pull protocol to copy metadata')),
           ('', 'uncompressed', None,
            _('use uncompressed transfer (fast over LAN)')),
          ] + remoteopts,
          _('[OPTION]... SOURCE [DEST]')),
     "^commit|ci":
         (commit,
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before committing')),
           ('', 'close-branch', None,
            _('mark a branch as closed, hiding it from the branch list')),
          ] + walkopts + commitopts + commitopts2,
          _('[OPTION]... [FILE]...')),
     "copy|cp":
         (copy,
          [('A', 'after', None, _('record a copy that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
          ] + walkopts + dryrunopts,
          _('[OPTION]... [SOURCE]... DEST')),
     "debugancestor": (debugancestor, [], _('[INDEX] REV1 REV2')),
     "debugbuilddag":
         (debugbuilddag,
          [('m', 'mergeable-file', None, _('add single file mergeable changes')),
           ('a', 'appended-file', None, _('add single file all revs append to')),
           ('o', 'overwritten-file', None, _('add single file all revs overwrite')),
           ('n', 'new-file', None, _('add new file at each rev')),
          ],
          _('[OPTION]... TEXT')),
     "debugcheckstate": (debugcheckstate, [], ''),
     "debugcommands": (debugcommands, [], _('[COMMAND]')),
     "debugcomplete":
         (debugcomplete,
          [('o', 'options', None, _('show the command options'))],
          _('[-o] CMD')),
     "debugdag":
         (debugdag,
          [('t', 'tags', None, _('use tags as labels')),
           ('b', 'branches', None, _('annotate with branch names')),
           ('', 'dots', None, _('use dots for runs')),
           ('s', 'spaces', None, _('separate elements by spaces')),
          ],
          _('[OPTION]... [FILE [REV]...]')),
     "debugdate":
         (debugdate,
          [('e', 'extended', None, _('try extended date formats'))],
          _('[-e] DATE [RANGE]')),
     "debugdata": (debugdata, [], _('FILE REV')),
     "debugfsinfo": (debugfsinfo, [], _('[PATH]')),
     "debugindex": (debugindex,
                    [('f', 'format', 0, _('revlog format'), _('FORMAT'))],
                    _('FILE')),
     "debugindexdot": (debugindexdot, [], _('FILE')),
     "debuginstall": (debuginstall, [], ''),
     "debugpushkey": (debugpushkey, [], _('REPO NAMESPACE [KEY OLD NEW]')),
     "debugrebuildstate":
         (debugrebuildstate,
          [('r', 'rev', '',
            _('revision to rebuild to'), _('REV'))],
          _('[-r REV] [REV]')),
     "debugrename":
         (debugrename,
          [('r', 'rev', '',
            _('revision to debug'), _('REV'))],
          _('[-r REV] FILE')),
     "debugrevspec":
         (debugrevspec, [], ('REVSPEC')),
     "debugsetparents":
         (debugsetparents, [], _('REV1 [REV2]')),
     "debugstate":
         (debugstate,
          [('', 'nodates', None, _('do not display the saved mtime'))],
          _('[OPTION]...')),
     "debugsub":
         (debugsub,
          [('r', 'rev', '',
            _('revision to check'), _('REV'))],
          _('[-r REV] [REV]')),
     "debugwalk": (debugwalk, walkopts, _('[OPTION]... [FILE]...')),
     "^diff":
         (diff,
          [('r', 'rev', [],
            _('revision'), _('REV')),
           ('c', 'change', '',
            _('change made by revision'), _('REV'))
          ] + diffopts + diffopts2 + walkopts + subrepoopts,
          _('[OPTION]... ([-c REV] | [-r REV1 [-r REV2]]) [FILE]...')),
     "^export":
         (export,
          [('o', 'output', '',
            _('print output to file with formatted name'), _('FORMAT')),
           ('', 'switch-parent', None, _('diff against the second parent')),
           ('r', 'rev', [],
            _('revisions to export'), _('REV')),
           ] + diffopts,
          _('[OPTION]... [-o OUTFILESPEC] REV...')),
     "^forget":
         (forget,
          [] + walkopts,
          _('[OPTION]... FILE...')),
     "grep":
         (grep,
          [('0', 'print0', None, _('end fields with NUL')),
           ('', 'all', None, _('print all revisions that match')),
           ('f', 'follow', None,
            _('follow changeset history,'
              ' or file history across copies and renames')),
           ('i', 'ignore-case', None, _('ignore case when matching')),
           ('l', 'files-with-matches', None,
            _('print only filenames and revisions that match')),
           ('n', 'line-number', None, _('print matching line numbers')),
           ('r', 'rev', [],
            _('only search files changed within revision range'), _('REV')),
           ('u', 'user', None, _('list the author (long with -v)')),
           ('d', 'date', None, _('list the date (short with -q)')),
          ] + walkopts,
          _('[OPTION]... PATTERN [FILE]...')),
     "heads":
         (heads,
          [('r', 'rev', '',
            _('show only heads which are descendants of STARTREV'),
            _('STARTREV')),
           ('t', 'topo', False, _('show topological heads only')),
           ('a', 'active', False,
            _('show active branchheads only (DEPRECATED)')),
           ('c', 'closed', False,
            _('show normal and closed branch heads')),
          ] + templateopts,
          _('[-ac] [-r STARTREV] [REV]...')),
     "help": (help_, [], _('[TOPIC]')),
     "identify|id":
         (identify,
          [('r', 'rev', '',
            _('identify the specified revision'), _('REV')),
           ('n', 'num', None, _('show local revision number')),
           ('i', 'id', None, _('show global revision id')),
           ('b', 'branch', None, _('show branch')),
           ('t', 'tags', None, _('show tags'))],
          _('[-nibt] [-r REV] [SOURCE]')),
     "import|patch":
         (import_,
          [('p', 'strip', 1,
            _('directory strip option for patch. This has the same '
              'meaning as the corresponding patch option'),
            _('NUM')),
           ('b', 'base', '',
            _('base path'), _('PATH')),
           ('f', 'force', None,
            _('skip check for outstanding uncommitted changes')),
           ('', 'no-commit', None,
            _("don't commit, just update the working directory")),
           ('', 'exact', None,
            _('apply patch to the nodes from which it was generated')),
           ('', 'import-branch', None,
            _('use any branch information in patch (implied by --exact)'))] +
          commitopts + commitopts2 + similarityopts,
          _('[OPTION]... PATCH...')),
     "incoming|in":
         (incoming,
          [('f', 'force', None,
            _('run even if remote repository is unrelated')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'bundle', '',
            _('file to store the bundles into'), _('FILE')),
           ('r', 'rev', [],
            _('a remote changeset intended to be added'), _('REV')),
           ('b', 'branch', [],
            _('a specific branch you would like to pull'), _('BRANCH')),
          ] + logopts + remoteopts + subrepoopts,
          _('[-p] [-n] [-M] [-f] [-r REV]...'
            ' [--bundle FILENAME] [SOURCE]')),
     "^init":
         (init,
          remoteopts,
          _('[-e CMD] [--remotecmd CMD] [DEST]')),
     "locate":
         (locate,
          [('r', 'rev', '',
            _('search the repository as it is in REV'), _('REV')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('f', 'fullpath', None,
            _('print complete paths from the filesystem root')),
          ] + walkopts,
          _('[OPTION]... [PATTERN]...')),
     "^log|history":
         (log,
          [('f', 'follow', None,
            _('follow changeset history,'
              ' or file history across copies and renames')),
           ('', 'follow-first', None,
            _('only follow the first parent of merge changesets')),
           ('d', 'date', '',
            _('show revisions matching date spec'), _('DATE')),
           ('C', 'copies', None, _('show copied files')),
           ('k', 'keyword', [],
            _('do case-insensitive search for a given text'), _('TEXT')),
           ('r', 'rev', [],
            _('show the specified revision or range'), _('REV')),
           ('', 'removed', None, _('include revisions where files were removed')),
           ('m', 'only-merges', None, _('show only merges')),
           ('u', 'user', [],
            _('revisions committed by user'), _('USER')),
           ('', 'only-branch', [],
            _('show only changesets within the given named branch (DEPRECATED)'),
            _('BRANCH')),
           ('b', 'branch', [],
            _('show changesets within the given named branch'), _('BRANCH')),
           ('P', 'prune', [],
            _('do not display revision or any of its ancestors'), _('REV')),
          ] + logopts + walkopts,
          _('[OPTION]... [FILE]')),
     "manifest":
         (manifest,
          [('r', 'rev', '',
            _('revision to display'), _('REV'))],
          _('[-r REV]')),
     "^merge":
         (merge,
          [('f', 'force', None, _('force a merge with outstanding changes')),
           ('t', 'tool', '', _('specify merge tool')),
           ('r', 'rev', '',
            _('revision to merge'), _('REV')),
           ('P', 'preview', None,
            _('review revisions to merge (no merge is performed)'))],
          _('[-P] [-f] [[-r] REV]')),
     "outgoing|out":
         (outgoing,
          [('f', 'force', None,
            _('run even when the destination is unrelated')),
           ('r', 'rev', [],
            _('a changeset intended to be included in the destination'),
            _('REV')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('b', 'branch', [],
            _('a specific branch you would like to push'), _('BRANCH')),
          ] + logopts + remoteopts + subrepoopts,
          _('[-M] [-p] [-n] [-f] [-r REV]... [DEST]')),
     "parents":
         (parents,
          [('r', 'rev', '',
            _('show parents of the specified revision'), _('REV')),
          ] + templateopts,
          _('[-r REV] [FILE]')),
     "paths": (paths, [], _('[NAME]')),
     "^pull":
         (pull,
          [('u', 'update', None,
            _('update to new branch head if changesets were pulled')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('r', 'rev', [],
            _('a remote changeset intended to be added'), _('REV')),
           ('b', 'branch', [],
            _('a specific branch you would like to pull'), _('BRANCH')),
          ] + remoteopts,
          _('[-u] [-f] [-r REV]... [-e CMD] [--remotecmd CMD] [SOURCE]')),
     "^push":
         (push,
          [('f', 'force', None, _('force push')),
           ('r', 'rev', [],
            _('a changeset intended to be included in the destination'),
            _('REV')),
           ('b', 'branch', [],
            _('a specific branch you would like to push'), _('BRANCH')),
           ('', 'new-branch', False, _('allow pushing a new branch')),
          ] + remoteopts,
          _('[-f] [-r REV]... [-e CMD] [--remotecmd CMD] [DEST]')),
     "recover": (recover, []),
     "^remove|rm":
         (remove,
          [('A', 'after', None, _('record delete for missing files')),
           ('f', 'force', None,
            _('remove (and delete) file even if added or modified')),
          ] + walkopts,
          _('[OPTION]... FILE...')),
     "rename|move|mv":
         (rename,
          [('A', 'after', None, _('record a rename that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
          ] + walkopts + dryrunopts,
          _('[OPTION]... SOURCE... DEST')),
     "resolve":
         (resolve,
          [('a', 'all', None, _('select all unresolved files')),
           ('l', 'list', None, _('list state of files needing merge')),
           ('m', 'mark', None, _('mark files as resolved')),
           ('u', 'unmark', None, _('mark files as unresolved')),
           ('t', 'tool', '', _('specify merge tool')),
           ('n', 'no-status', None, _('hide status prefix'))]
           + walkopts,
           _('[OPTION]... [FILE]...')),
     "revert":
         (revert,
          [('a', 'all', None, _('revert all changes when no arguments given')),
           ('d', 'date', '',
            _('tipmost revision matching date'), _('DATE')),
           ('r', 'rev', '',
            _('revert to the specified revision'), _('REV')),
           ('', 'no-backup', None, _('do not save backup copies of files')),
          ] + walkopts + dryrunopts,
          _('[OPTION]... [-r REV] [NAME]...')),
     "rollback": (rollback, dryrunopts),
     "root": (root, []),
     "^serve":
         (serve,
          [('A', 'accesslog', '',
            _('name of access log file to write to'), _('FILE')),
           ('d', 'daemon', None, _('run server in background')),
           ('', 'daemon-pipefds', '',
            _('used internally by daemon mode'), _('NUM')),
           ('E', 'errorlog', '',
            _('name of error log file to write to'), _('FILE')),
           # use string type, then we can check if something was passed
           ('p', 'port', '',
            _('port to listen on (default: 8000)'), _('PORT')),
           ('a', 'address', '',
            _('address to listen on (default: all interfaces)'), _('ADDR')),
           ('', 'prefix', '',
            _('prefix path to serve from (default: server root)'), _('PREFIX')),
           ('n', 'name', '',
            _('name to show in web pages (default: working directory)'),
            _('NAME')),
           ('', 'web-conf', '',
            _('name of the hgweb config file (see "hg help hgweb")'),
            _('FILE')),
           ('', 'webdir-conf', '',
            _('name of the hgweb config file (DEPRECATED)'), _('FILE')),
           ('', 'pid-file', '',
            _('name of file to write process ID to'), _('FILE')),
           ('', 'stdio', None, _('for remote clients')),
           ('t', 'templates', '',
            _('web templates to use'), _('TEMPLATE')),
           ('', 'style', '',
            _('template style to use'), _('STYLE')),
           ('6', 'ipv6', None, _('use IPv6 in addition to IPv4')),
           ('', 'certificate', '',
            _('SSL certificate file'), _('FILE'))],
          _('[OPTION]...')),
     "showconfig|debugconfig":
         (showconfig,
          [('u', 'untrusted', None, _('show untrusted configuration options'))],
          _('[-u] [NAME]...')),
     "^summary|sum":
         (summary,
          [('', 'remote', None, _('check for push and pull'))], '[--remote]'),
     "^status|st":
         (status,
          [('A', 'all', None, _('show status of all files')),
           ('m', 'modified', None, _('show only modified files')),
           ('a', 'added', None, _('show only added files')),
           ('r', 'removed', None, _('show only removed files')),
           ('d', 'deleted', None, _('show only deleted (but tracked) files')),
           ('c', 'clean', None, _('show only files without changes')),
           ('u', 'unknown', None, _('show only unknown (not tracked) files')),
           ('i', 'ignored', None, _('show only ignored files')),
           ('n', 'no-status', None, _('hide status prefix')),
           ('C', 'copies', None, _('show source of copied files')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('', 'rev', [],
            _('show difference from revision'), _('REV')),
           ('', 'change', '',
            _('list the changed files of a revision'), _('REV')),
          ] + walkopts + subrepoopts,
          _('[OPTION]... [FILE]...')),
     "tag":
         (tag,
          [('f', 'force', None, _('force tag')),
           ('l', 'local', None, _('make the tag local')),
           ('r', 'rev', '',
            _('revision to tag'), _('REV')),
           ('', 'remove', None, _('remove a tag')),
           # -l/--local is already there, commitopts cannot be used
           ('e', 'edit', None, _('edit commit message')),
           ('m', 'message', '',
            _('use <text> as commit message'), _('TEXT')),
          ] + commitopts2,
          _('[-f] [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME...')),
     "tags": (tags, [], ''),
     "tip":
         (tip,
          [('p', 'patch', None, _('show patch')),
           ('g', 'git', None, _('use git extended diff format')),
          ] + templateopts,
          _('[-p] [-g]')),
     "unbundle":
         (unbundle,
          [('u', 'update', None,
            _('update to new branch head if changesets were unbundled'))],
          _('[-u] FILE...')),
     "^update|up|checkout|co":
         (update,
          [('C', 'clean', None, _('discard uncommitted changes (no backup)')),
           ('c', 'check', None,
            _('update across branches if no uncommitted changes')),
           ('d', 'date', '',
            _('tipmost revision matching date'), _('DATE')),
           ('r', 'rev', '',
            _('revision'), _('REV'))],
          _('[-c] [-C] [-d DATE] [[-r] REV]')),
     "verify": (verify, []),
     "version": (version_, []),
 }
 
 norepo = ("clone init version help debugcommands debugcomplete"
           " debugdate debuginstall debugfsinfo debugpushkey")
 optionalrepo = ("identify paths serve showconfig debugancestor debugdag"
                 " debugdata debugindex debugindexdot")

mercurial/dispatch.py

@@ -1,641 +1,644 b''
 # dispatch.py - command dispatching for mercurial
 #
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from i18n import _
 import os, sys, atexit, signal, pdb, socket, errno, shlex, time, traceback, re
 import util, commands, hg, fancyopts, extensions, hook, error
 import cmdutil, encoding
 import ui as uimod
 
 def run():
     "run the command in sys.argv"
     sys.exit(dispatch(sys.argv[1:]))
 
 def dispatch(args):
     "run the command specified in args"
     try:
         u = uimod.ui()
         if '--traceback' in args:
             u.setconfig('ui', 'traceback', 'on')
     except util.Abort, inst:
         sys.stderr.write(_("abort: %s\n") % inst)
         if inst.hint:
             sys.stderr.write(_("(%s)\n") % inst.hint)
         return -1
     except error.ParseError, inst:
         if len(inst.args) > 1:
             sys.stderr.write(_("hg: parse error at %s: %s\n") %
                              (inst.args[1], inst.args[0]))
         else:
             sys.stderr.write(_("hg: parse error: %s\n") % inst.args[0])
         return -1
     return _runcatch(u, args)
 
 def _runcatch(ui, args):
     def catchterm(*args):
         raise error.SignalInterrupt
 
     try:
         for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM':
             num = getattr(signal, name, None)
             if num:
                 signal.signal(num, catchterm)
     except ValueError:
         pass # happens if called in a thread
 
     try:
         try:
             # enter the debugger before command execution
             if '--debugger' in args:
                 ui.warn(_("entering debugger - "
                         "type c to continue starting hg or h for help\n"))
                 pdb.set_trace()
             try:
                 return _dispatch(ui, args)
             finally:
                 ui.flush()
         except:
             # enter the debugger when we hit an exception
             if '--debugger' in args:
                 traceback.print_exc()
                 pdb.post_mortem(sys.exc_info()[2])
             ui.traceback()
             raise
 
     # Global exception handling, alphabetically
     # Mercurial-specific first, followed by built-in and library exceptions
     except error.AmbiguousCommand, inst:
         ui.warn(_("hg: command '%s' is ambiguous:\n    %s\n") %
                 (inst.args[0], " ".join(inst.args[1])))
     except error.ParseError, inst:
         if len(inst.args) > 1:
             ui.warn(_("hg: parse error at %s: %s\n") %
                              (inst.args[1], inst.args[0]))
         else:
             ui.warn(_("hg: parse error: %s\n") % inst.args[0])
         return -1
     except error.LockHeld, inst:
         if inst.errno == errno.ETIMEDOUT:
             reason = _('timed out waiting for lock held by %s') % inst.locker
         else:
             reason = _('lock held by %s') % inst.locker
         ui.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason))
     except error.LockUnavailable, inst:
         ui.warn(_("abort: could not lock %s: %s\n") %
                (inst.desc or inst.filename, inst.strerror))
     except error.CommandError, inst:
         if inst.args[0]:
             ui.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
             commands.help_(ui, inst.args[0])
         else:
             ui.warn(_("hg: %s\n") % inst.args[1])
             commands.help_(ui, 'shortlist')
     except error.RepoError, inst:
         ui.warn(_("abort: %s!\n") % inst)
     except error.ResponseError, inst:
         ui.warn(_("abort: %s") % inst.args[0])
         if not isinstance(inst.args[1], basestring):
             ui.warn(" %r\n" % (inst.args[1],))
         elif not inst.args[1]:
             ui.warn(_(" empty string\n"))
         else:
             ui.warn("\n%r\n" % util.ellipsis(inst.args[1]))
     except error.RevlogError, inst:
         ui.warn(_("abort: %s!\n") % inst)
     except error.SignalInterrupt:
         ui.warn(_("killed!\n"))
     except error.UnknownCommand, inst:
         ui.warn(_("hg: unknown command '%s'\n") % inst.args[0])
         try:
             # check if the command is in a disabled extension
             # (but don't check for extensions themselves)
             commands.help_(ui, inst.args[0], unknowncmd=True)
         except error.UnknownCommand:
             commands.help_(ui, 'shortlist')
     except util.Abort, inst:
         ui.warn(_("abort: %s\n") % inst)
         if inst.hint:
             ui.warn(_("(%s)\n") % inst.hint)
     except ImportError, inst:
         ui.warn(_("abort: %s!\n") % inst)
         m = str(inst).split()[-1]
         if m in "mpatch bdiff".split():
             ui.warn(_("(did you forget to compile extensions?)\n"))
         elif m in "zlib".split():
             ui.warn(_("(is your Python install correct?)\n"))
     except IOError, inst:
         if hasattr(inst, "code"):
             ui.warn(_("abort: %s\n") % inst)
         elif hasattr(inst, "reason"):
             try: # usually it is in the form (errno, strerror)
                 reason = inst.reason.args[1]
             except: # it might be anything, for example a string
                 reason = inst.reason
             ui.warn(_("abort: error: %s\n") % reason)
         elif hasattr(inst, "args") and inst.args[0] == errno.EPIPE:
             if ui.debugflag:
                 ui.warn(_("broken pipe\n"))
         elif getattr(inst, "strerror", None):
             if getattr(inst, "filename", None):
                 ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
             else:
                 ui.warn(_("abort: %s\n") % inst.strerror)
         else:
             raise
     except OSError, inst:
         if getattr(inst, "filename", None):
             ui.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
         else:
             ui.warn(_("abort: %s\n") % inst.strerror)
     except KeyboardInterrupt:
         try:
             ui.warn(_("interrupted!\n"))
         except IOError, inst:
             if inst.errno == errno.EPIPE:
                 if ui.debugflag:
                     ui.warn(_("\nbroken pipe\n"))
             else:
                 raise
     except MemoryError:
         ui.warn(_("abort: out of memory\n"))
     except SystemExit, inst:
         # Commands shouldn't sys.exit directly, but give a return code.
         # Just in case catch this and and pass exit code to caller.
         return inst.code
     except socket.error, inst:
         ui.warn(_("abort: %s\n") % inst.args[-1])
     except:
         ui.warn(_("** unknown exception encountered,"
                   " please report by visiting\n"))
         ui.warn(_("**  http://mercurial.selenic.com/wiki/BugTracker\n"))
         ui.warn(_("** Python %s\n") % sys.version.replace('\n', ''))
         ui.warn(_("** Mercurial Distributed SCM (version %s)\n")
                % util.version())
         ui.warn(_("** Extensions loaded: %s\n")
                % ", ".join([x[0] for x in extensions.extensions()]))
         raise
 
     return -1
 
 def aliasargs(fn):
     if hasattr(fn, 'args'):
         return fn.args
     return []
 
 class cmdalias(object):
     def __init__(self, name, definition, cmdtable):
         self.name = self.cmd = name
         self.cmdname = ''
         self.definition = definition
         self.args = []
         self.opts = []
         self.help = ''
         self.norepo = True
         self.badalias = False
 
         try:
             aliases, entry = cmdutil.findcmd(self.name, cmdtable)
             for alias, e in cmdtable.iteritems():
                 if e is entry:
                     self.cmd = alias
                     break
             self.shadows = True
         except error.UnknownCommand:
             self.shadows = False
 
         if not self.definition:
             def fn(ui, *args):
                 ui.warn(_("no definition for alias '%s'\n") % self.name)
                 return 1
             self.fn = fn
             self.badalias = True
 
             return
 
         if self.definition.startswith('!'):
             self.shell = True
             def fn(ui, *args):
                 env = {'HG_ARGS': ' '.join((self.name,) + args)}
                 def _checkvar(m):
                     if int(m.groups()[0]) <= len(args):
                         return m.group()
                     else:
                         return ''
                 cmd = re.sub(r'\$(\d+)', _checkvar, self.definition[1:])
                 replace = dict((str(i + 1), arg) for i, arg in enumerate(args))
                 replace['0'] = self.name
                 replace['@'] = ' '.join(args)
                 cmd = util.interpolate(r'\$', replace, cmd)
                 return util.system(cmd, environ=env)
             self.fn = fn
             return
 
         args = shlex.split(self.definition)
         self.cmdname = cmd = args.pop(0)
         args = map(util.expandpath, args)
 
         for invalidarg in ("--cwd", "-R", "--repository", "--repo"):
             if _earlygetopt([invalidarg], args):
                 def fn(ui, *args):
                     ui.warn(_("error in definition for alias '%s': %s may only "
                               "be given on the command line\n")
                             % (self.name, invalidarg))
                     return 1
 
                 self.fn = fn
                 self.badalias = True
                 return
 
         try:
             tableentry = cmdutil.findcmd(cmd, cmdtable, False)[1]
             if len(tableentry) > 2:
                 self.fn, self.opts, self.help = tableentry
             else:
                 self.fn, self.opts = tableentry
 
             self.args = aliasargs(self.fn) + args
             if cmd not in commands.norepo.split(' '):
                 self.norepo = False
             if self.help.startswith("hg " + cmd):
                 # drop prefix in old-style help lines so hg shows the alias
                 self.help = self.help[4 + len(cmd):]
             self.__doc__ = self.fn.__doc__
 
         except error.UnknownCommand:
             def fn(ui, *args):
                 ui.warn(_("alias '%s' resolves to unknown command '%s'\n") \
                             % (self.name, cmd))
                 try:
                     # check if the command is in a disabled extension
                     commands.help_(ui, cmd, unknowncmd=True)
                 except error.UnknownCommand:
                     pass
                 return 1
             self.fn = fn
             self.badalias = True
         except error.AmbiguousCommand:
             def fn(ui, *args):
                 ui.warn(_("alias '%s' resolves to ambiguous command '%s'\n") \
                             % (self.name, cmd))
                 return 1
             self.fn = fn
             self.badalias = True
 
     def __call__(self, ui, *args, **opts):
         if self.shadows:
             ui.debug("alias '%s' shadows command '%s'\n" %
                      (self.name, self.cmdname))
 
         if self.definition.startswith('!'):
             return self.fn(ui, *args, **opts)
         else:
             try:
                 util.checksignature(self.fn)(ui, *args, **opts)
             except error.SignatureError:
                 args = ' '.join([self.cmdname] + self.args)
                 ui.debug("alias '%s' expands to '%s'\n" % (self.name, args))
                 raise
 
 def addaliases(ui, cmdtable):
     # aliases are processed after extensions have been loaded, so they
     # may use extension commands. Aliases can also use other alias definitions,
     # but only if they have been defined prior to the current definition.
     for alias, definition in ui.configitems('alias'):
         aliasdef = cmdalias(alias, definition, cmdtable)
         cmdtable[aliasdef.cmd] = (aliasdef, aliasdef.opts, aliasdef.help)
         if aliasdef.norepo:
             commands.norepo += ' %s' % alias
 
 def _parse(ui, args):
     options = {}
     cmdoptions = {}
 
     try:
         args = fancyopts.fancyopts(args, commands.globalopts, options)
     except fancyopts.getopt.GetoptError, inst:
         raise error.CommandError(None, inst)
 
     if args:
         cmd, args = args[0], args[1:]
         aliases, entry = cmdutil.findcmd(cmd, commands.table,
                                      ui.config("ui", "strict"))
         cmd = aliases[0]
         args = aliasargs(entry[0]) + args
         defaults = ui.config("defaults", cmd)
         if defaults:
             args = map(util.expandpath, shlex.split(defaults)) + args
         c = list(entry[1])
     else:
         cmd = None
         c = []
 
     # combine global options into local
     for o in commands.globalopts:
         c.append((o[0], o[1], options[o[1]], o[3]))
 
     try:
         args = fancyopts.fancyopts(args, c, cmdoptions, True)
     except fancyopts.getopt.GetoptError, inst:
         raise error.CommandError(cmd, inst)
 
     # separate global options back out
     for o in commands.globalopts:
         n = o[1]
         options[n] = cmdoptions[n]
         del cmdoptions[n]
 
     return (cmd, cmd and entry[0] or None, args, options, cmdoptions)
 
 def _parseconfig(ui, config):
     """parse the --config options from the command line"""
     for cfg in config:
         try:
             name, value = cfg.split('=', 1)
             section, name = name.split('.', 1)
             if not section or not name:
                 raise IndexError
             ui.setconfig(section, name, value)
         except (IndexError, ValueError):
             raise util.Abort(_('malformed --config option: %r '
                                '(use --config section.name=value)') % cfg)
 
 def _earlygetopt(aliases, args):
     """Return list of values for an option (or aliases).
 
     The values are listed in the order they appear in args.
     The options and values are removed from args.
     """
     try:
         argcount = args.index("--")
     except ValueError:
         argcount = len(args)
     shortopts = [opt for opt in aliases if len(opt) == 2]
     values = []
     pos = 0
     while pos < argcount:
         if args[pos] in aliases:
             if pos + 1 >= argcount:
                 # ignore and let getopt report an error if there is no value
                 break
             del args[pos]
             values.append(args.pop(pos))
             argcount -= 2
         elif args[pos][:2] in shortopts:
             # short option can have no following space, e.g. hg log -Rfoo
             values.append(args.pop(pos)[2:])
             argcount -= 1
         else:
             pos += 1
     return values
 
 def runcommand(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions):
     # run pre-hook, and abort if it fails
     ret = hook.hook(lui, repo, "pre-%s" % cmd, False, args=" ".join(fullargs),
                     pats=cmdpats, opts=cmdoptions)
     if ret:
         return ret
     ret = _runcommand(ui, options, cmd, d)
     # run post-hook, passing command result
     hook.hook(lui, repo, "post-%s" % cmd, False, args=" ".join(fullargs),
               result=ret, pats=cmdpats, opts=cmdoptions)
     return ret
 
 def _getlocal(ui, rpath):
     """Return (path, local ui object) for the given target path.
 
     Takes paths in [cwd]/.hg/hgrc into account."
     """
     try:
         wd = os.getcwd()
     except OSError, e:
         raise util.Abort(_("error getting current working directory: %s") %
                          e.strerror)
     path = cmdutil.findrepo(wd) or ""
     if not path:
         lui = ui
     else:
         lui = ui.copy()
         lui.readconfig(os.path.join(path, ".hg", "hgrc"), path)
 
     if rpath:
         path = lui.expandpath(rpath[-1])
         lui = ui.copy()
         lui.readconfig(os.path.join(path, ".hg", "hgrc"), path)
 
     return path, lui
 
 def _checkshellalias(ui, args):
     cwd = os.getcwd()
     norepo = commands.norepo
     options = {}
 
     try:
         args = fancyopts.fancyopts(args, commands.globalopts, options)
     except fancyopts.getopt.GetoptError:
         return
 
     if not args:
         return
 
     _parseconfig(ui, options['config'])
     if options['cwd']:
         os.chdir(options['cwd'])
 
     path, lui = _getlocal(ui, [options['repository']])
 
     cmdtable = commands.table.copy()
     addaliases(lui, cmdtable)
 
     cmd = args[0]
     try:
         aliases, entry = cmdutil.findcmd(cmd, cmdtable, lui.config("ui", "strict"))
     except (error.AmbiguousCommand, error.UnknownCommand):
         commands.norepo = norepo
         os.chdir(cwd)
         return
 
     cmd = aliases[0]
     fn = entry[0]
 
     if cmd and hasattr(fn, 'shell'):
         d = lambda: fn(ui, *args[1:])
         return lambda: runcommand(lui, None, cmd, args[:1], ui, options, d, [], {})
 
     commands.norepo = norepo
     os.chdir(cwd)
 
 _loaded = set()
 def _dispatch(ui, args):
     shellaliasfn = _checkshellalias(ui, args)
     if shellaliasfn:
         return shellaliasfn()
 
     # read --config before doing anything else
     # (e.g. to change trust settings for reading .hg/hgrc)
     _parseconfig(ui, _earlygetopt(['--config'], args))
 
     # check for cwd
     cwd = _earlygetopt(['--cwd'], args)
     if cwd:
         os.chdir(cwd[-1])
 
     rpath = _earlygetopt(["-R", "--repository", "--repo"], args)
     path, lui = _getlocal(ui, rpath)
 
     # Configure extensions in phases: uisetup, extsetup, cmdtable, and
     # reposetup. Programs like TortoiseHg will call _dispatch several
     # times so we keep track of configured extensions in _loaded.
     extensions.loadall(lui)
     exts = [ext for ext in extensions.extensions() if ext[0] not in _loaded]
     # Propagate any changes to lui.__class__ by extensions
     ui.__class__ = lui.__class__
 
     # (uisetup and extsetup are handled in extensions.loadall)
 
     for name, module in exts:
         cmdtable = getattr(module, 'cmdtable', {})
         overrides = [cmd for cmd in cmdtable if cmd in commands.table]
         if overrides:
             ui.warn(_("extension '%s' overrides commands: %s\n")
                     % (name, " ".join(overrides)))
         commands.table.update(cmdtable)
         _loaded.add(name)
 
     # (reposetup is handled in hg.repository)
 
     addaliases(lui, commands.table)
 
     # check for fallback encoding
     fallback = lui.config('ui', 'fallbackencoding')
     if fallback:
         encoding.fallbackencoding = fallback
 
     fullargs = args
     cmd, func, args, options, cmdoptions = _parse(lui, args)
 
     if options["config"]:
         raise util.Abort(_("option --config may not be abbreviated!"))
     if options["cwd"]:
         raise util.Abort(_("option --cwd may not be abbreviated!"))
     if options["repository"]:
         raise util.Abort(_(
             "Option -R has to be separated from other options (e.g. not -qR) "
             "and --repository may only be abbreviated as --repo!"))
 
     if options["encoding"]:
         encoding.encoding = options["encoding"]
     if options["encodingmode"]:
         encoding.encodingmode = options["encodingmode"]
     if options["time"]:
         def get_times():
             t = os.times()
             if t[4] == 0.0: # Windows leaves this as zero, so use time.clock()
                 t = (t[0], t[1], t[2], t[3], time.clock())
             return t
         s = get_times()
         def print_time():
             t = get_times()
             ui.warn(_("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") %
                 (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
         atexit.register(print_time)
 
     if options['verbose'] or options['debug'] or options['quiet']:
         ui.setconfig('ui', 'verbose', str(bool(options['verbose'])))
         ui.setconfig('ui', 'debug', str(bool(options['debug'])))
         ui.setconfig('ui', 'quiet', str(bool(options['quiet'])))
     if options['traceback']:
         ui.setconfig('ui', 'traceback', 'on')
     if options['noninteractive']:
         ui.setconfig('ui', 'interactive', 'off')
 
+    if cmdoptions.get('insecure', False):
+        ui.setconfig('web', 'cacerts', '')
+
     if options['help']:
         return commands.help_(ui, cmd, options['version'])
     elif options['version']:
         return commands.version_(ui)
     elif not cmd:
         return commands.help_(ui, 'shortlist')
 
     repo = None
     cmdpats = args[:]
     if cmd not in commands.norepo.split():
         try:
             repo = hg.repository(ui, path=path)
             ui = repo.ui
             if not repo.local():
                 raise util.Abort(_("repository '%s' is not local") % path)
             ui.setconfig("bundle", "mainreporoot", repo.root)
         except error.RepoError:
             if cmd not in commands.optionalrepo.split():
                 if args and not path: # try to infer -R from command args
                     repos = map(cmdutil.findrepo, args)
                     guess = repos[0]
                     if guess and repos.count(guess) == len(repos):
                         return _dispatch(ui, ['--repository', guess] + fullargs)
                 if not path:
                     raise error.RepoError(_("There is no Mercurial repository"
                                       " here (.hg not found)"))
                 raise
         args.insert(0, repo)
     elif rpath:
         ui.warn(_("warning: --repository ignored\n"))
 
     msg = ' '.join(' ' in a and repr(a) or a for a in fullargs)
     ui.log("command", msg + "\n")
     d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
     return runcommand(lui, repo, cmd, fullargs, ui, options, d,
                       cmdpats, cmdoptions)
 
 def _runcommand(ui, options, cmd, cmdfunc):
     def checkargs():
         try:
             return cmdfunc()
         except error.SignatureError:
             raise error.CommandError(cmd, _("invalid arguments"))
 
     if options['profile']:
         format = ui.config('profiling', 'format', default='text')
 
         if not format in ['text', 'kcachegrind']:
             ui.warn(_("unrecognized profiling format '%s'"
                         " - Ignored\n") % format)
             format = 'text'
 
         output = ui.config('profiling', 'output')
 
         if output:
             path = ui.expandpath(output)
             ostream = open(path, 'wb')
         else:
             ostream = sys.stderr
 
         try:
             from mercurial import lsprof
         except ImportError:
             raise util.Abort(_(
                 'lsprof not available - install from '
                 'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/'))
         p = lsprof.Profiler()
         p.enable(subcalls=True)
         try:
             return checkargs()
         finally:
             p.disable()
 
             if format == 'kcachegrind':
                 import lsprofcalltree
                 calltree = lsprofcalltree.KCacheGrind(p)
                 calltree.output(ostream)
             else:
                 # format == 'text'
                 stats = lsprof.Stats(p.getstats())
                 stats.sort()
                 stats.pprint(top=10, file=ostream, climit=5)
 
             if output:
                 ostream.close()
     else:
         return checkargs()

mercurial/url.py

@@ -1,761 +1,762 b''
 # url.py - HTTP handling for mercurial
 #
 # Copyright 2005, 2006, 2007, 2008 Matt Mackall <[e-mail]>
 # Copyright 2006, 2007 Alexis S. L. Carvalho <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 import urllib, urllib2, urlparse, httplib, os, re, socket, cStringIO
 import __builtin__
 from i18n import _
 import keepalive, util
 
 def _urlunparse(scheme, netloc, path, params, query, fragment, url):
     '''Handle cases where urlunparse(urlparse(x://)) doesn't preserve the "//"'''
     result = urlparse.urlunparse((scheme, netloc, path, params, query, fragment))
     if (scheme and
         result.startswith(scheme + ':') and
         not result.startswith(scheme + '://') and
         url.startswith(scheme + '://')
        ):
         result = scheme + '://' + result[len(scheme + ':'):]
     return result
 
 def hidepassword(url):
     '''hide user credential in a url string'''
     scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
     netloc = re.sub('([^:]*):([^@]*)@(.*)', r'\1:***@\3', netloc)
     return _urlunparse(scheme, netloc, path, params, query, fragment, url)
 
 def removeauth(url):
     '''remove all authentication information from a url string'''
     scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
     netloc = netloc[netloc.find('@')+1:]
     return _urlunparse(scheme, netloc, path, params, query, fragment, url)
 
 def netlocsplit(netloc):
     '''split [user[:passwd]@]host[:port] into 4-tuple.'''
 
     a = netloc.find('@')
     if a == -1:
         user, passwd = None, None
     else:
         userpass, netloc = netloc[:a], netloc[a + 1:]
         c = userpass.find(':')
         if c == -1:
             user, passwd = urllib.unquote(userpass), None
         else:
             user = urllib.unquote(userpass[:c])
             passwd = urllib.unquote(userpass[c + 1:])
     c = netloc.find(':')
     if c == -1:
         host, port = netloc, None
     else:
         host, port = netloc[:c], netloc[c + 1:]
     return host, port, user, passwd
 
 def netlocunsplit(host, port, user=None, passwd=None):
     '''turn host, port, user, passwd into [user[:passwd]@]host[:port].'''
     if port:
         hostport = host + ':' + port
     else:
         hostport = host
     if user:
         quote = lambda s: urllib.quote(s, safe='')
         if passwd:
             userpass = quote(user) + ':' + quote(passwd)
         else:
             userpass = quote(user)
         return userpass + '@' + hostport
     return hostport
 
 _safe = ('abcdefghijklmnopqrstuvwxyz'
          'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
          '0123456789' '_.-/')
 _safeset = None
 _hex = None
 def quotepath(path):
     '''quote the path part of a URL
 
     This is similar to urllib.quote, but it also tries to avoid
     quoting things twice (inspired by wget):
 
     >>> quotepath('abc def')
     'abc%20def'
     >>> quotepath('abc%20def')
     'abc%20def'
     >>> quotepath('abc%20 def')
     'abc%20%20def'
     >>> quotepath('abc def%20')
     'abc%20def%20'
     >>> quotepath('abc def%2')
     'abc%20def%252'
     >>> quotepath('abc def%')
     'abc%20def%25'
     '''
     global _safeset, _hex
     if _safeset is None:
         _safeset = set(_safe)
         _hex = set('abcdefABCDEF0123456789')
     l = list(path)
     for i in xrange(len(l)):
         c = l[i]
         if (c == '%' and i + 2 < len(l) and
             l[i + 1] in _hex and l[i + 2] in _hex):
             pass
         elif c not in _safeset:
             l[i] = '%%%02X' % ord(c)
     return ''.join(l)
 
 class passwordmgr(urllib2.HTTPPasswordMgrWithDefaultRealm):
     def __init__(self, ui):
         urllib2.HTTPPasswordMgrWithDefaultRealm.__init__(self)
         self.ui = ui
 
     def find_user_password(self, realm, authuri):
         authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm.find_user_password(
             self, realm, authuri)
         user, passwd = authinfo
         if user and passwd:
             self._writedebug(user, passwd)
             return (user, passwd)
 
         if not user:
             auth = self.readauthtoken(authuri)
             if auth:
                 user, passwd = auth.get('username'), auth.get('password')
         if not user or not passwd:
             if not self.ui.interactive():
                 raise util.Abort(_('http authorization required'))
 
             self.ui.write(_("http authorization required\n"))
             self.ui.write(_("realm: %s\n") % realm)
             if user:
                 self.ui.write(_("user: %s\n") % user)
             else:
                 user = self.ui.prompt(_("user:"), default=None)
 
             if not passwd:
                 passwd = self.ui.getpass()
 
         self.add_password(realm, authuri, user, passwd)
         self._writedebug(user, passwd)
         return (user, passwd)
 
     def _writedebug(self, user, passwd):
         msg = _('http auth: user %s, password %s\n')
         self.ui.debug(msg % (user, passwd and '*' * len(passwd) or 'not set'))
 
     def readauthtoken(self, uri):
         # Read configuration
         config = dict()
         for key, val in self.ui.configitems('auth'):
             if '.' not in key:
                 self.ui.warn(_("ignoring invalid [auth] key '%s'\n") % key)
                 continue
             group, setting = key.split('.', 1)
             gdict = config.setdefault(group, dict())
             if setting in ('username', 'cert', 'key'):
                 val = util.expandpath(val)
             gdict[setting] = val
 
         # Find the best match
         scheme, hostpath = uri.split('://', 1)
         bestlen = 0
         bestauth = None
         for auth in config.itervalues():
             prefix = auth.get('prefix')
             if not prefix:
                 continue
             p = prefix.split('://', 1)
             if len(p) > 1:
                 schemes, prefix = [p[0]], p[1]
             else:
                 schemes = (auth.get('schemes') or 'https').split()
             if (prefix == '*' or hostpath.startswith(prefix)) and \
                 len(prefix) > bestlen and scheme in schemes:
                 bestlen = len(prefix)
                 bestauth = auth
         return bestauth
 
 class proxyhandler(urllib2.ProxyHandler):
     def __init__(self, ui):
         proxyurl = ui.config("http_proxy", "host") or os.getenv('http_proxy')
         # XXX proxyauthinfo = None
 
         if proxyurl:
             # proxy can be proper url or host[:port]
             if not (proxyurl.startswith('http:') or
                     proxyurl.startswith('https:')):
                 proxyurl = 'http://' + proxyurl + '/'
             snpqf = urlparse.urlsplit(proxyurl)
             proxyscheme, proxynetloc, proxypath, proxyquery, proxyfrag = snpqf
             hpup = netlocsplit(proxynetloc)
 
             proxyhost, proxyport, proxyuser, proxypasswd = hpup
             if not proxyuser:
                 proxyuser = ui.config("http_proxy", "user")
                 proxypasswd = ui.config("http_proxy", "passwd")
 
             # see if we should use a proxy for this url
             no_list = ["localhost", "127.0.0.1"]
             no_list.extend([p.lower() for
                             p in ui.configlist("http_proxy", "no")])
             no_list.extend([p.strip().lower() for
                             p in os.getenv("no_proxy", '').split(',')
                             if p.strip()])
             # "http_proxy.always" config is for running tests on localhost
             if ui.configbool("http_proxy", "always"):
                 self.no_list = []
             else:
                 self.no_list = no_list
 
             proxyurl = urlparse.urlunsplit((
                 proxyscheme, netlocunsplit(proxyhost, proxyport,
                                                 proxyuser, proxypasswd or ''),
                 proxypath, proxyquery, proxyfrag))
             proxies = {'http': proxyurl, 'https': proxyurl}
             ui.debug('proxying through http://%s:%s\n' %
                       (proxyhost, proxyport))
         else:
             proxies = {}
 
         # urllib2 takes proxy values from the environment and those
         # will take precedence if found, so drop them
         for env in ["HTTP_PROXY", "http_proxy", "no_proxy"]:
             try:
                 if env in os.environ:
                     del os.environ[env]
             except OSError:
                 pass
 
         urllib2.ProxyHandler.__init__(self, proxies)
         self.ui = ui
 
     def proxy_open(self, req, proxy, type_):
         host = req.get_host().split(':')[0]
         if host in self.no_list:
             return None
 
         # work around a bug in Python < 2.4.2
         # (it leaves a "\n" at the end of Proxy-authorization headers)
         baseclass = req.__class__
         class _request(baseclass):
             def add_header(self, key, val):
                 if key.lower() == 'proxy-authorization':
                     val = val.strip()
                 return baseclass.add_header(self, key, val)
         req.__class__ = _request
 
         return urllib2.ProxyHandler.proxy_open(self, req, proxy, type_)
 
 class httpsendfile(object):
     """This is a wrapper around the objects returned by python's "open".
 
     Its purpose is to send file-like objects via HTTP and, to do so, it
     defines a __len__ attribute to feed the Content-Length header.
     """
 
     def __init__(self, ui, *args, **kwargs):
         # We can't just "self._data = open(*args, **kwargs)" here because there
         # is an "open" function defined in this module that shadows the global
         # one
         self.ui = ui
         self._data = __builtin__.open(*args, **kwargs)
         self.seek = self._data.seek
         self.close = self._data.close
         self.write = self._data.write
         self._len = os.fstat(self._data.fileno()).st_size
         self._pos = 0
         self._total = len(self) / 1024 * 2
 
     def read(self, *args, **kwargs):
         try:
             ret = self._data.read(*args, **kwargs)
         except EOFError:
             self.ui.progress(_('sending'), None)
         self._pos += len(ret)
         # We pass double the max for total because we currently have
         # to send the bundle twice in the case of a server that
         # requires authentication. Since we can't know until we try
         # once whether authentication will be required, just lie to
         # the user and maybe the push succeeds suddenly at 50%.
         self.ui.progress(_('sending'), self._pos / 1024,
                          unit=_('kb'), total=self._total)
         return ret
 
     def __len__(self):
         return self._len
 
 def _gen_sendfile(connection):
     def _sendfile(self, data):
         # send a file
         if isinstance(data, httpsendfile):
             # if auth required, some data sent twice, so rewind here
             data.seek(0)
             for chunk in util.filechunkiter(data):
                 connection.send(self, chunk)
         else:
             connection.send(self, data)
     return _sendfile
 
 has_https = hasattr(urllib2, 'HTTPSHandler')
 if has_https:
     try:
         # avoid using deprecated/broken FakeSocket in python 2.6
         import ssl
         _ssl_wrap_socket = ssl.wrap_socket
         CERT_REQUIRED = ssl.CERT_REQUIRED
     except ImportError:
         CERT_REQUIRED = 2
 
         def _ssl_wrap_socket(sock, key_file, cert_file,
                              cert_reqs=CERT_REQUIRED, ca_certs=None):
             if ca_certs:
                 raise util.Abort(_(
                     'certificate checking requires Python 2.6'))
 
             ssl = socket.ssl(sock, key_file, cert_file)
             return httplib.FakeSocket(sock, ssl)
 
     try:
         _create_connection = socket.create_connection
     except AttributeError:
         _GLOBAL_DEFAULT_TIMEOUT = object()
 
         def _create_connection(address, timeout=_GLOBAL_DEFAULT_TIMEOUT,
                                source_address=None):
             # lifted from Python 2.6
 
             msg = "getaddrinfo returns an empty list"
             host, port = address
             for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
                 af, socktype, proto, canonname, sa = res
                 sock = None
                 try:
                     sock = socket.socket(af, socktype, proto)
                     if timeout is not _GLOBAL_DEFAULT_TIMEOUT:
                         sock.settimeout(timeout)
                     if source_address:
                         sock.bind(source_address)
                     sock.connect(sa)
                     return sock
 
                 except socket.error, msg:
                     if sock is not None:
                         sock.close()
 
             raise socket.error, msg
 
 class httpconnection(keepalive.HTTPConnection):
     # must be able to send big bundle as stream.
     send = _gen_sendfile(keepalive.HTTPConnection)
 
     def connect(self):
         if has_https and self.realhostport: # use CONNECT proxy
             self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
             self.sock.connect((self.host, self.port))
             if _generic_proxytunnel(self):
                 # we do not support client x509 certificates
                 self.sock = _ssl_wrap_socket(self.sock, None, None)
         else:
             keepalive.HTTPConnection.connect(self)
 
     def getresponse(self):
         proxyres = getattr(self, 'proxyres', None)
         if proxyres:
             if proxyres.will_close:
                 self.close()
             self.proxyres = None
             return proxyres
         return keepalive.HTTPConnection.getresponse(self)
 
 # general transaction handler to support different ways to handle
 # HTTPS proxying before and after Python 2.6.3.
 def _generic_start_transaction(handler, h, req):
     if hasattr(req, '_tunnel_host') and req._tunnel_host:
         tunnel_host = req._tunnel_host
         if tunnel_host[:7] not in ['http://', 'https:/']:
             tunnel_host = 'https://' + tunnel_host
         new_tunnel = True
     else:
         tunnel_host = req.get_selector()
         new_tunnel = False
 
     if new_tunnel or tunnel_host == req.get_full_url(): # has proxy
         urlparts = urlparse.urlparse(tunnel_host)
         if new_tunnel or urlparts[0] == 'https': # only use CONNECT for HTTPS
             realhostport = urlparts[1]
             if realhostport[-1] == ']' or ':' not in realhostport:
                 realhostport += ':443'
 
             h.realhostport = realhostport
             h.headers = req.headers.copy()
             h.headers.update(handler.parent.addheaders)
             return
 
     h.realhostport = None
     h.headers = None
 
 def _generic_proxytunnel(self):
     proxyheaders = dict(
             [(x, self.headers[x]) for x in self.headers
              if x.lower().startswith('proxy-')])
     self._set_hostport(self.host, self.port)
     self.send('CONNECT %s HTTP/1.0\r\n' % self.realhostport)
     for header in proxyheaders.iteritems():
         self.send('%s: %s\r\n' % header)
     self.send('\r\n')
 
     # majority of the following code is duplicated from
     # httplib.HTTPConnection as there are no adequate places to
     # override functions to provide the needed functionality
     res = self.response_class(self.sock,
                               strict=self.strict,
                               method=self._method)
 
     while True:
         version, status, reason = res._read_status()
         if status != httplib.CONTINUE:
             break
         while True:
             skip = res.fp.readline().strip()
             if not skip:
                 break
     res.status = status
     res.reason = reason.strip()
 
     if res.status == 200:
         while True:
             line = res.fp.readline()
             if line == '\r\n':
                 break
         return True
 
     if version == 'HTTP/1.0':
         res.version = 10
     elif version.startswith('HTTP/1.'):
         res.version = 11
     elif version == 'HTTP/0.9':
         res.version = 9
     else:
         raise httplib.UnknownProtocol(version)
 
     if res.version == 9:
         res.length = None
         res.chunked = 0
         res.will_close = 1
         res.msg = httplib.HTTPMessage(cStringIO.StringIO())
         return False
 
     res.msg = httplib.HTTPMessage(res.fp)
     res.msg.fp = None
 
     # are we using the chunked-style of transfer encoding?
     trenc = res.msg.getheader('transfer-encoding')
     if trenc and trenc.lower() == "chunked":
         res.chunked = 1
         res.chunk_left = None
     else:
         res.chunked = 0
 
     # will the connection close at the end of the response?
     res.will_close = res._check_close()
 
     # do we have a Content-Length?
     # NOTE: RFC 2616, S4.4, #3 says we ignore this if tr_enc is "chunked"
     length = res.msg.getheader('content-length')
     if length and not res.chunked:
         try:
             res.length = int(length)
         except ValueError:
             res.length = None
         else:
             if res.length < 0:  # ignore nonsensical negative lengths
                 res.length = None
     else:
         res.length = None
 
     # does the body have a fixed length? (of zero)
     if (status == httplib.NO_CONTENT or status == httplib.NOT_MODIFIED or
         100 <= status < 200 or # 1xx codes
         res._method == 'HEAD'):
         res.length = 0
 
     # if the connection remains open, and we aren't using chunked, and
     # a content-length was not provided, then assume that the connection
     # WILL close.
     if (not res.will_close and
        not res.chunked and
        res.length is None):
         res.will_close = 1
 
     self.proxyres = res
 
     return False
 
 class httphandler(keepalive.HTTPHandler):
     def http_open(self, req):
         return self.do_open(httpconnection, req)
 
     def _start_transaction(self, h, req):
         _generic_start_transaction(self, h, req)
         return keepalive.HTTPHandler._start_transaction(self, h, req)
 
 def _verifycert(cert, hostname):
     '''Verify that cert (in socket.getpeercert() format) matches hostname.
     CRLs is not handled.
 
     Returns error message if any problems are found and None on success.
     '''
     if not cert:
         return _('no certificate received')
     dnsname = hostname.lower()
     def matchdnsname(certname):
         return (certname == dnsname or
                 '.' in dnsname and certname == '*.' + dnsname.split('.', 1)[1])
 
     san = cert.get('subjectAltName', [])
     if san:
         certnames = [value.lower() for key, value in san if key == 'DNS']
         for name in certnames:
             if matchdnsname(name):
                 return None
         return _('certificate is for %s') % ', '.join(certnames)
 
     # subject is only checked when subjectAltName is empty
     for s in cert.get('subject', []):
         key, value = s[0]
         if key == 'commonName':
             try:
                 # 'subject' entries are unicode
                 certname = value.lower().encode('ascii')
             except UnicodeEncodeError:
                 return _('IDN in certificate not supported')
             if matchdnsname(certname):
                 return None
             return _('certificate is for %s') % certname
     return _('no commonName or subjectAltName found in certificate')
 
 if has_https:
     class BetterHTTPS(httplib.HTTPSConnection):
         send = keepalive.safesend
 
         def connect(self):
             if hasattr(self, 'ui'):
                 cacerts = self.ui.config('web', 'cacerts')
                 if cacerts:
                     cacerts = util.expandpath(cacerts)
             else:
                 cacerts = None
 
             hostfingerprint = self.ui.config('hostfingerprints', self.host)
             if cacerts and not hostfingerprint:
                 sock = _create_connection((self.host, self.port))
                 self.sock = _ssl_wrap_socket(sock, self.key_file,
                         self.cert_file, cert_reqs=CERT_REQUIRED,
                         ca_certs=cacerts)
                 msg = _verifycert(self.sock.getpeercert(), self.host)
                 if msg:
-                    raise util.Abort(_('%s certificate error: %s') %
-                                     (self.host, msg))
+                    raise util.Abort(_('%s certificate error: %s '
+                                       '(use --insecure to connect '
+                                       'insecurely)') % (self.host, msg))
                 self.ui.debug('%s certificate successfully verified\n' %
                               self.host)
             else:
                 httplib.HTTPSConnection.connect(self)
                 if hasattr(self.sock, 'getpeercert'):
                     peercert = self.sock.getpeercert(True)
                     peerfingerprint = util.sha1(peercert).hexdigest()
                     nicefingerprint = ":".join([peerfingerprint[x:x + 2]
                         for x in xrange(0, len(peerfingerprint), 2)])
                     if hostfingerprint:
                         if peerfingerprint.lower() != \
                                 hostfingerprint.replace(':', '').lower():
                             raise util.Abort(_('invalid certificate for %s '
                                                'with fingerprint %s') %
                                              (self.host, nicefingerprint))
                         self.ui.debug('%s certificate matched fingerprint %s\n' %
                                       (self.host, nicefingerprint))
                     else:
                         self.ui.warn(_('warning: %s certificate '
                                        'with fingerprint %s not verified '
                                        '(check hostfingerprints or web.cacerts '
                                        'config setting)\n') %
                                      (self.host, nicefingerprint))
                 else: # python 2.5 ?
                     if hostfingerprint:
                         raise util.Abort(_('no certificate for %s '
                                            'with fingerprint') % self.host)
                     self.ui.warn(_('warning: %s certificate not verified '
                                    '(check web.cacerts config setting)\n') %
                                  self.host)
 
     class httpsconnection(BetterHTTPS):
         response_class = keepalive.HTTPResponse
         # must be able to send big bundle as stream.
         send = _gen_sendfile(BetterHTTPS)
         getresponse = keepalive.wrapgetresponse(httplib.HTTPSConnection)
 
         def connect(self):
             if self.realhostport: # use CONNECT proxy
                 self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                 self.sock.connect((self.host, self.port))
                 if _generic_proxytunnel(self):
                     self.sock = _ssl_wrap_socket(self.sock, self.key_file,
                             self.cert_file)
             else:
                 BetterHTTPS.connect(self)
 
     class httpshandler(keepalive.KeepAliveHandler, urllib2.HTTPSHandler):
         def __init__(self, ui):
             keepalive.KeepAliveHandler.__init__(self)
             urllib2.HTTPSHandler.__init__(self)
             self.ui = ui
             self.pwmgr = passwordmgr(self.ui)
 
         def _start_transaction(self, h, req):
             _generic_start_transaction(self, h, req)
             return keepalive.KeepAliveHandler._start_transaction(self, h, req)
 
         def https_open(self, req):
             self.auth = self.pwmgr.readauthtoken(req.get_full_url())
             return self.do_open(self._makeconnection, req)
 
         def _makeconnection(self, host, port=None, *args, **kwargs):
             keyfile = None
             certfile = None
 
             if len(args) >= 1: # key_file
                 keyfile = args[0]
             if len(args) >= 2: # cert_file
                 certfile = args[1]
             args = args[2:]
 
             # if the user has specified different key/cert files in
             # hgrc, we prefer these
             if self.auth and 'key' in self.auth and 'cert' in self.auth:
                 keyfile = self.auth['key']
                 certfile = self.auth['cert']
 
             conn = httpsconnection(host, port, keyfile, certfile, *args, **kwargs)
             conn.ui = self.ui
             return conn
 
 class httpdigestauthhandler(urllib2.HTTPDigestAuthHandler):
     def __init__(self, *args, **kwargs):
         urllib2.HTTPDigestAuthHandler.__init__(self, *args, **kwargs)
         self.retried_req = None
 
     def reset_retry_count(self):
         # Python 2.6.5 will call this on 401 or 407 errors and thus loop
         # forever. We disable reset_retry_count completely and reset in
         # http_error_auth_reqed instead.
         pass
 
     def http_error_auth_reqed(self, auth_header, host, req, headers):
         # Reset the retry counter once for each request.
         if req is not self.retried_req:
             self.retried_req = req
             self.retried = 0
         # In python < 2.5 AbstractDigestAuthHandler raises a ValueError if
         # it doesn't know about the auth type requested. This can happen if
         # somebody is using BasicAuth and types a bad password.
         try:
             return urllib2.HTTPDigestAuthHandler.http_error_auth_reqed(
                         self, auth_header, host, req, headers)
         except ValueError, inst:
             arg = inst.args[0]
             if arg.startswith("AbstractDigestAuthHandler doesn't know "):
                 return
             raise
 
 class httpbasicauthhandler(urllib2.HTTPBasicAuthHandler):
     def __init__(self, *args, **kwargs):
         urllib2.HTTPBasicAuthHandler.__init__(self, *args, **kwargs)
         self.retried_req = None
 
     def reset_retry_count(self):
         # Python 2.6.5 will call this on 401 or 407 errors and thus loop
         # forever. We disable reset_retry_count completely and reset in
         # http_error_auth_reqed instead.
         pass
 
     def http_error_auth_reqed(self, auth_header, host, req, headers):
         # Reset the retry counter once for each request.
         if req is not self.retried_req:
             self.retried_req = req
             self.retried = 0
         return urllib2.HTTPBasicAuthHandler.http_error_auth_reqed(
                         self, auth_header, host, req, headers)
 
 def getauthinfo(path):
     scheme, netloc, urlpath, query, frag = urlparse.urlsplit(path)
     if not urlpath:
         urlpath = '/'
     if scheme != 'file':
         # XXX: why are we quoting the path again with some smart
         # heuristic here? Anyway, it cannot be done with file://
         # urls since path encoding is os/fs dependent (see
         # urllib.pathname2url() for details).
         urlpath = quotepath(urlpath)
     host, port, user, passwd = netlocsplit(netloc)
 
     # urllib cannot handle URLs with embedded user or passwd
     url = urlparse.urlunsplit((scheme, netlocunsplit(host, port),
                               urlpath, query, frag))
     if user:
         netloc = host
         if port:
             netloc += ':' + port
         # Python < 2.4.3 uses only the netloc to search for a password
         authinfo = (None, (url, netloc), user, passwd or '')
     else:
         authinfo = None
     return url, authinfo
 
 handlerfuncs = []
 
 def opener(ui, authinfo=None):
     '''
     construct an opener suitable for urllib2
     authinfo will be added to the password manager
     '''
     handlers = [httphandler()]
     if has_https:
         handlers.append(httpshandler(ui))
 
     handlers.append(proxyhandler(ui))
 
     passmgr = passwordmgr(ui)
     if authinfo is not None:
         passmgr.add_password(*authinfo)
         user, passwd = authinfo[2:4]
         ui.debug('http auth: user %s, password %s\n' %
                  (user, passwd and '*' * len(passwd) or 'not set'))
 
     handlers.extend((httpbasicauthhandler(passmgr),
                      httpdigestauthhandler(passmgr)))
     handlers.extend([h(ui, passmgr) for h in handlerfuncs])
     opener = urllib2.build_opener(*handlers)
 
     # 1.0 here is the _protocol_ version
     opener.addheaders = [('User-agent', 'mercurial/proto-1.0')]
     opener.addheaders.append(('Accept', 'application/mercurial-0.1'))
     return opener
 
 scheme_re = re.compile(r'^([a-zA-Z0-9+-.]+)://')
 
 def open(ui, url, data=None):
     scheme = None
     m = scheme_re.search(url)
     if m:
         scheme = m.group(1).lower()
     if not scheme:
         path = util.normpath(os.path.abspath(url))
         url = 'file://' + urllib.pathname2url(path)
         authinfo = None
     else:
         url, authinfo = getauthinfo(url)
     return opener(ui, authinfo).open(url, data)

tests/test-debugcomplete.t

@@ -1,249 +1,249 b''
 Show all commands except debug commands
   $ hg debugcomplete
   add
   addremove
   annotate
   archive
   backout
   bisect
   branch
   branches
   bundle
   cat
   clone
   commit
   copy
   diff
   export
   forget
   grep
   heads
   help
   identify
   import
   incoming
   init
   locate
   log
   manifest
   merge
   outgoing
   parents
   paths
   pull
   push
   recover
   remove
   rename
   resolve
   revert
   rollback
   root
   serve
   showconfig
   status
   summary
   tag
   tags
   tip
   unbundle
   update
   verify
   version
 
 Show all commands that start with "a"
   $ hg debugcomplete a
   add
   addremove
   annotate
   archive
 
 Do not show debug commands if there are other candidates
   $ hg debugcomplete d
   diff
 
 Show debug commands if there are no other candidates
   $ hg debugcomplete debug
   debugancestor
   debugbuilddag
   debugcheckstate
   debugcommands
   debugcomplete
   debugconfig
   debugdag
   debugdata
   debugdate
   debugfsinfo
   debugindex
   debugindexdot
   debuginstall
   debugpushkey
   debugrebuildstate
   debugrename
   debugrevspec
   debugsetparents
   debugstate
   debugsub
   debugwalk
 
 Do not show the alias of a debug command if there are other candidates
 (this should hide rawcommit)
   $ hg debugcomplete r
   recover
   remove
   rename
   resolve
   revert
   rollback
   root
 Show the alias of a debug command if there are no other candidates
   $ hg debugcomplete rawc
   
 
 Show the global options
   $ hg debugcomplete --options | sort
   --config
   --cwd
   --debug
   --debugger
   --encoding
   --encodingmode
   --help
   --noninteractive
   --profile
   --quiet
   --repository
   --time
   --traceback
   --verbose
   --version
   -R
   -h
   -q
   -v
   -y
 
 Show the options for the "serve" command
   $ hg debugcomplete --options serve | sort
   --accesslog
   --address
   --certificate
   --config
   --cwd
   --daemon
   --daemon-pipefds
   --debug
   --debugger
   --encoding
   --encodingmode
   --errorlog
   --help
   --ipv6
   --name
   --noninteractive
   --pid-file
   --port
   --prefix
   --profile
   --quiet
   --repository
   --stdio
   --style
   --templates
   --time
   --traceback
   --verbose
   --version
   --web-conf
   -6
   -A
   -E
   -R
   -a
   -d
   -h
   -n
   -p
   -q
   -t
   -v
   -y
 
 Show an error if we use --options with an ambiguous abbreviation
   $ hg debugcomplete --options s
   hg: command 's' is ambiguous:
       serve showconfig status summary
   [255]
 
 Show all commands + options
   $ hg debugcommands
   add: include, exclude, subrepos, dry-run
   annotate: rev, follow, no-follow, text, user, file, date, number, changeset, line-number, include, exclude
-  clone: noupdate, updaterev, rev, branch, pull, uncompressed, ssh, remotecmd
+  clone: noupdate, updaterev, rev, branch, pull, uncompressed, ssh, remotecmd, insecure
   commit: addremove, close-branch, include, exclude, message, logfile, date, user
   diff: rev, change, text, git, nodates, show-function, reverse, ignore-all-space, ignore-space-change, ignore-blank-lines, unified, stat, include, exclude, subrepos
   export: output, switch-parent, rev, text, git, nodates
   forget: include, exclude
-  init: ssh, remotecmd
+  init: ssh, remotecmd, insecure
   log: follow, follow-first, date, copies, keyword, rev, removed, only-merges, user, only-branch, branch, prune, patch, git, limit, no-merges, stat, style, template, include, exclude
   merge: force, tool, rev, preview
-  pull: update, force, rev, branch, ssh, remotecmd
-  push: force, rev, branch, new-branch, ssh, remotecmd
+  pull: update, force, rev, branch, ssh, remotecmd, insecure
+  push: force, rev, branch, new-branch, ssh, remotecmd, insecure
   remove: after, force, include, exclude
   serve: accesslog, daemon, daemon-pipefds, errorlog, port, address, prefix, name, web-conf, webdir-conf, pid-file, stdio, templates, style, ipv6, certificate
   status: all, modified, added, removed, deleted, clean, unknown, ignored, no-status, copies, print0, rev, change, include, exclude, subrepos
   summary: remote
   update: clean, check, date, rev
   addremove: similarity, include, exclude, dry-run
   archive: no-decode, prefix, rev, type, subrepos, include, exclude
   backout: merge, parent, tool, rev, include, exclude, message, logfile, date, user
   bisect: reset, good, bad, skip, command, noupdate
   branch: force, clean
   branches: active, closed
-  bundle: force, rev, branch, base, all, type, ssh, remotecmd
+  bundle: force, rev, branch, base, all, type, ssh, remotecmd, insecure
   cat: output, rev, decode, include, exclude
   copy: after, force, include, exclude, dry-run
   debugancestor: 
   debugbuilddag: mergeable-file, appended-file, overwritten-file, new-file
   debugcheckstate: 
   debugcommands: 
   debugcomplete: options
   debugdag: tags, branches, dots, spaces
   debugdata: 
   debugdate: extended
   debugfsinfo: 
   debugindex: format
   debugindexdot: 
   debuginstall: 
   debugpushkey: 
   debugrebuildstate: rev
   debugrename: rev
   debugrevspec: 
   debugsetparents: 
   debugstate: nodates
   debugsub: rev
   debugwalk: include, exclude
   grep: print0, all, follow, ignore-case, files-with-matches, line-number, rev, user, date, include, exclude
   heads: rev, topo, active, closed, style, template
   help: 
   identify: rev, num, id, branch, tags
   import: strip, base, force, no-commit, exact, import-branch, message, logfile, date, user, similarity
-  incoming: force, newest-first, bundle, rev, branch, patch, git, limit, no-merges, stat, style, template, ssh, remotecmd, subrepos
+  incoming: force, newest-first, bundle, rev, branch, patch, git, limit, no-merges, stat, style, template, ssh, remotecmd, insecure, subrepos
   locate: rev, print0, fullpath, include, exclude
   manifest: rev
-  outgoing: force, rev, newest-first, branch, patch, git, limit, no-merges, stat, style, template, ssh, remotecmd, subrepos
+  outgoing: force, rev, newest-first, branch, patch, git, limit, no-merges, stat, style, template, ssh, remotecmd, insecure, subrepos
   parents: rev, style, template
   paths: 
   recover: 
   rename: after, force, include, exclude, dry-run
   resolve: all, list, mark, unmark, tool, no-status, include, exclude
   revert: all, date, rev, no-backup, include, exclude, dry-run
   rollback: dry-run
   root: 
   showconfig: untrusted
   tag: force, local, rev, remove, edit, message, date, user
   tags: 
   tip: patch, git, style, template
   unbundle: update
   verify: 
   version: 

tests/test-https.t

@@ -1,209 +1,224 b''
 Proper https client requires the built-in ssl from Python 2.6.
 
   $ "$TESTDIR/hghave" ssl || exit 80
 
 Certificates created with:
  printf '.\n.\n.\n.\n.\nlocalhost\nhg@localhost\n' | \
  openssl req -newkey rsa:512 -keyout priv.pem -nodes -x509 -days 9000 -out pub.pem
 Can be dumped with:
  openssl x509 -in pub.pem -text
 
   $ cat << EOT > priv.pem 
   > -----BEGIN PRIVATE KEY-----
   > MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEApjCWeYGrIa/Vo7LH
   > aRF8ou0tbgHKE33Use/whCnKEUm34rDaXQd4lxxX6aDWg06n9tiVStAKTgQAHJY8
   > j/xgSwIDAQABAkBxHC6+Qlf0VJXGlb6NL16yEVVTQxqDS6hA9zqu6TZjrr0YMfzc
   > EGNIiZGt7HCBL0zO+cPDg/LeCZc6HQhf0KrhAiEAzlJq4hWWzvguWFIJWSoBeBUG
   > MF1ACazQO7PYE8M0qfECIQDONHHP0SKZzz/ZwBZcAveC5K61f/v9hONFwbeYulzR
   > +wIgc9SvbtgB/5Yzpp//4ZAEnR7oh5SClCvyB+KSx52K3nECICbhQphhoXmI10wy
   > aMTellaq0bpNMHFDziqH9RsqAHhjAiEAgYGxfzkftt5IUUn/iFK89aaIpyrpuaAh
   > HY8gUVkVRVs=
   > -----END PRIVATE KEY-----
   > EOT
 
   $ cat << EOT > pub.pem 
   > -----BEGIN CERTIFICATE-----
   > MIIBqzCCAVWgAwIBAgIJANAXFFyWjGnRMA0GCSqGSIb3DQEBBQUAMDExEjAQBgNV
   > BAMMCWxvY2FsaG9zdDEbMBkGCSqGSIb3DQEJARYMaGdAbG9jYWxob3N0MB4XDTEw
   > MTAxNDIwMzAxNFoXDTM1MDYwNTIwMzAxNFowMTESMBAGA1UEAwwJbG9jYWxob3N0
   > MRswGQYJKoZIhvcNAQkBFgxoZ0Bsb2NhbGhvc3QwXDANBgkqhkiG9w0BAQEFAANL
   > ADBIAkEApjCWeYGrIa/Vo7LHaRF8ou0tbgHKE33Use/whCnKEUm34rDaXQd4lxxX
   > 6aDWg06n9tiVStAKTgQAHJY8j/xgSwIDAQABo1AwTjAdBgNVHQ4EFgQUE6sA+amm
   > r24dGX0kpjxOgO45hzQwHwYDVR0jBBgwFoAUE6sA+ammr24dGX0kpjxOgO45hzQw
   > DAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQUFAANBAFArvQFiAZJgQczRsbYlG1xl
   > t+truk37w5B3m3Ick1ntRcQrqs+hf0CO1q6Squ144geYaQ8CDirSR92fICELI1c=
   > -----END CERTIFICATE-----
   > EOT
   $ cat priv.pem pub.pem >> server.pem
   $ PRIV=`pwd`/server.pem
 
   $ cat << EOT > pub-other.pem 
   > -----BEGIN CERTIFICATE-----
   > MIIBqzCCAVWgAwIBAgIJALwZS731c/ORMA0GCSqGSIb3DQEBBQUAMDExEjAQBgNV
   > BAMMCWxvY2FsaG9zdDEbMBkGCSqGSIb3DQEJARYMaGdAbG9jYWxob3N0MB4XDTEw
   > MTAxNDIwNDUxNloXDTM1MDYwNTIwNDUxNlowMTESMBAGA1UEAwwJbG9jYWxob3N0
   > MRswGQYJKoZIhvcNAQkBFgxoZ0Bsb2NhbGhvc3QwXDANBgkqhkiG9w0BAQEFAANL
   > ADBIAkEAsxsapLbHrqqUKuQBxdpK4G3m2LjtyrTSdpzzzFlecxd5yhNP6AyWrufo
   > K4VMGo2xlu9xOo88nDSUNSKPuD09MwIDAQABo1AwTjAdBgNVHQ4EFgQUoIB1iMhN
   > y868rpQ2qk9dHnU6ebswHwYDVR0jBBgwFoAUoIB1iMhNy868rpQ2qk9dHnU6ebsw
   > DAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQUFAANBAJ544f125CsE7J2t55PdFaF6
   > bBlNBb91FCywBgSjhBjf+GG3TNPwrPdc3yqeq+hzJiuInqbOBv9abmMyq8Wsoig=
   > -----END CERTIFICATE-----
   > EOT
 
 pub.pem patched with other notBefore / notAfter:
 
   $ cat << EOT > pub-not-yet.pem 
   > -----BEGIN CERTIFICATE-----
   > MIIBqzCCAVWgAwIBAgIJANAXFFyWjGnRMA0GCSqGSIb3DQEBBQUAMDExEjAQBgNVBAMMCWxvY2Fs
   > aG9zdDEbMBkGCSqGSIb3DQEJARYMaGdAbG9jYWxob3N0MB4XDTM1MDYwNTIwMzAxNFoXDTM1MDYw
   > NTIwMzAxNFowMTESMBAGA1UEAwwJbG9jYWxob3N0MRswGQYJKoZIhvcNAQkBFgxoZ0Bsb2NhbGhv
   > c3QwXDANBgkqhkiG9w0BAQEFAANLADBIAkEApjCWeYGrIa/Vo7LHaRF8ou0tbgHKE33Use/whCnK
   > EUm34rDaXQd4lxxX6aDWg06n9tiVStAKTgQAHJY8j/xgSwIDAQABo1AwTjAdBgNVHQ4EFgQUE6sA
   > +ammr24dGX0kpjxOgO45hzQwHwYDVR0jBBgwFoAUE6sA+ammr24dGX0kpjxOgO45hzQwDAYDVR0T
   > BAUwAwEB/zANBgkqhkiG9w0BAQUFAANBAJXV41gWnkgC7jcpPpFRSUSZaxyzrXmD1CIqQf0WgVDb
   > /12E0vR2DuZitgzUYtBaofM81aTtc0a2/YsrmqePGm0=
   > -----END CERTIFICATE-----
   > EOT
   $ cat priv.pem pub-not-yet.pem > server-not-yet.pem
 
   $ cat << EOT > pub-expired.pem 
   > -----BEGIN CERTIFICATE-----
   > MIIBqzCCAVWgAwIBAgIJANAXFFyWjGnRMA0GCSqGSIb3DQEBBQUAMDExEjAQBgNVBAMMCWxvY2Fs
   > aG9zdDEbMBkGCSqGSIb3DQEJARYMaGdAbG9jYWxob3N0MB4XDTEwMTAxNDIwMzAxNFoXDTEwMTAx
   > NDIwMzAxNFowMTESMBAGA1UEAwwJbG9jYWxob3N0MRswGQYJKoZIhvcNAQkBFgxoZ0Bsb2NhbGhv
   > c3QwXDANBgkqhkiG9w0BAQEFAANLADBIAkEApjCWeYGrIa/Vo7LHaRF8ou0tbgHKE33Use/whCnK
   > EUm34rDaXQd4lxxX6aDWg06n9tiVStAKTgQAHJY8j/xgSwIDAQABo1AwTjAdBgNVHQ4EFgQUE6sA
   > +ammr24dGX0kpjxOgO45hzQwHwYDVR0jBBgwFoAUE6sA+ammr24dGX0kpjxOgO45hzQwDAYDVR0T
   > BAUwAwEB/zANBgkqhkiG9w0BAQUFAANBAJfk57DTRf2nUbYaMSlVAARxMNbFGOjQhAUtY400GhKt
   > 2uiKCNGKXVXD3AHWe13yHc5KttzbHQStE5Nm/DlWBWQ=
   > -----END CERTIFICATE-----
   > EOT
   $ cat priv.pem pub-expired.pem > server-expired.pem
 
   $ hg init test
   $ cd test
   $ echo foo>foo
   $ mkdir foo.d foo.d/bAr.hg.d foo.d/baR.d.hg
   $ echo foo>foo.d/foo
   $ echo bar>foo.d/bAr.hg.d/BaR
   $ echo bar>foo.d/baR.d.hg/bAR
   $ hg commit -A -m 1
   adding foo
   adding foo.d/bAr.hg.d/BaR
   adding foo.d/baR.d.hg/bAR
   adding foo.d/foo
   $ hg serve -p $HGPORT -d --pid-file=../hg0.pid --certificate=$PRIV
   $ cat ../hg0.pid >> $DAEMON_PIDS
 
 Test server address cannot be reused
 
   $ hg serve -p $HGPORT --certificate=$PRIV 2>&1
   abort: cannot start server at ':$HGPORT': Address already in use
   [255]
   $ cd ..
 
 clone via pull
 
   $ hg clone https://localhost:$HGPORT/ copy-pull
   warning: localhost certificate with fingerprint 91:4f:1a:ff:87:24:9c:09:b6:85:9b:88:b1:90:6d:30:75:64:91:ca not verified (check hostfingerprints or web.cacerts config setting)
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 4 changes to 4 files
   updating to branch default
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg verify -R copy-pull
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   4 files, 1 changesets, 4 total revisions
   $ cd test
   $ echo bar > bar
   $ hg commit -A -d '1 0' -m 2
   adding bar
   $ cd ..
 
 pull without cacert
 
   $ cd copy-pull
   $ echo '[hooks]' >> .hg/hgrc
   $ echo "changegroup = python '$TESTDIR'/printenv.py changegroup" >> .hg/hgrc
   $ hg pull
   warning: localhost certificate with fingerprint 91:4f:1a:ff:87:24:9c:09:b6:85:9b:88:b1:90:6d:30:75:64:91:ca not verified (check hostfingerprints or web.cacerts config setting)
   changegroup hook: HG_NODE=5fed3813f7f5e1824344fdc9cf8f63bb662c292d HG_SOURCE=pull HG_URL=https://localhost:$HGPORT/ 
   pulling from https://localhost:$HGPORT/
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   (run 'hg update' to get a working copy)
   $ cd ..
 
 cacert configured in local repo
 
   $ cp copy-pull/.hg/hgrc copy-pull/.hg/hgrc.bu
   $ echo "[web]" >> copy-pull/.hg/hgrc
   $ echo "cacerts=`pwd`/pub.pem" >> copy-pull/.hg/hgrc
   $ hg -R copy-pull pull --traceback
   pulling from https://localhost:$HGPORT/
   searching for changes
   no changes found
   $ mv copy-pull/.hg/hgrc.bu copy-pull/.hg/hgrc
 
 cacert configured globally, also testing expansion of environment
 variables in the filename
 
   $ echo "[web]" >> $HGRCPATH
   $ echo 'cacerts=$P/pub.pem' >> $HGRCPATH
   $ P=`pwd` hg -R copy-pull pull
   pulling from https://localhost:$HGPORT/
   searching for changes
   no changes found
+  $ P=`pwd` hg -R copy-pull pull --insecure
+  warning: localhost certificate with fingerprint 91:4f:1a:ff:87:24:9c:09:b6:85:9b:88:b1:90:6d:30:75:64:91:ca not verified (check hostfingerprints or web.cacerts config setting)
+  pulling from https://localhost:$HGPORT/
+  searching for changes
+  no changes found
 
 cacert mismatch
 
   $ hg -R copy-pull pull --config web.cacerts=pub.pem https://127.0.0.1:$HGPORT/
-  abort: 127.0.0.1 certificate error: certificate is for localhost
+  abort: 127.0.0.1 certificate error: certificate is for localhost (use --insecure to connect insecurely)
   [255]
+  $ hg -R copy-pull pull --config web.cacerts=pub.pem https://127.0.0.1:$HGPORT/ --insecure
+  warning: 127.0.0.1 certificate with fingerprint 91:4f:1a:ff:87:24:9c:09:b6:85:9b:88:b1:90:6d:30:75:64:91:ca not verified (check hostfingerprints or web.cacerts config setting)
+  pulling from https://127.0.0.1:$HGPORT/
+  searching for changes
+  no changes found
   $ hg -R copy-pull pull --config web.cacerts=pub-other.pem
   abort: error: *:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed (glob)
   [255]
+  $ hg -R copy-pull pull --config web.cacerts=pub-other.pem --insecure
+  warning: localhost certificate with fingerprint 91:4f:1a:ff:87:24:9c:09:b6:85:9b:88:b1:90:6d:30:75:64:91:ca not verified (check hostfingerprints or web.cacerts config setting)
+  pulling from https://localhost:$HGPORT/
+  searching for changes
+  no changes found
 
 Test server cert which isn't valid yet
 
   $ hg -R test serve -p $HGPORT1 -d --pid-file=hg1.pid --certificate=server-not-yet.pem  
   $ cat hg1.pid >> $DAEMON_PIDS
   $ hg -R copy-pull pull --config web.cacerts=pub-not-yet.pem https://localhost:$HGPORT1/
   abort: error: *:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed (glob)
   [255]
 
 Test server cert which no longer is valid
 
   $ hg -R test serve -p $HGPORT2 -d --pid-file=hg2.pid --certificate=server-expired.pem  
   $ cat hg2.pid >> $DAEMON_PIDS
   $ hg -R copy-pull pull --config web.cacerts=pub-expired.pem https://localhost:$HGPORT2/
   abort: error: *:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed (glob)
   [255]
 
 Fingerprints
 
   $ echo "[hostfingerprints]" >> copy-pull/.hg/hgrc
   $ echo "localhost = 91:4f:1a:ff:87:24:9c:09:b6:85:9b:88:b1:90:6d:30:75:64:91:ca" >> copy-pull/.hg/hgrc
   $ echo "127.0.0.1 = 914f1aff87249c09b6859b88b1906d30756491ca" >> copy-pull/.hg/hgrc
 
 - works without cacerts
   $ hg -R copy-pull id https://localhost:$HGPORT/ --config web.cacerts=
   5fed3813f7f5
 
 - fails when cert doesn't match hostname (port is ignored)
   $ hg -R copy-pull id https://localhost:$HGPORT1/
   abort: invalid certificate for localhost with fingerprint 28:ff:71:bf:65:31:14:23:ad:62:92:b4:0e:31:99:18:fc:83:e3:9b
   [255]
 
 - ignores that certificate doesn't match hostname
   $ hg -R copy-pull id https://127.0.0.1:$HGPORT/
   5fed3813f7f5