~bzr-pqm/bzr/bzr.dev

####################
Bazaar Release Notes
####################

.. toctree::
   :maxdepth: 1

bzr 0.16
########

:Released:  2007-05-07

Bugfixes
********

* Handle when you have 2 directories with similar names, but one has a
  hyphen. (``'abc'`` versus ``'abc-2'``). The WT4._iter_changes
  iterator was using direct comparison and ``'abc/a'`` sorts after
  ``'abc-2'``, but ``('abc', 'a')`` sorts before ``('abc-2',)``.
  (John Arbash Meinel, #111127)

* Handle when someone renames a file on disk without telling bzr.
  Previously we would report the first file as missing, but not show
  the new unknown file. (John Arbash Meinel, #111288)

* Avoid error when running hooks after pulling into or pushing from
  a branch bound to a smartserver branch.  (Martin Pool, #111968)

Improvements
************

* Move developer documentation to doc/developers/. This reduces clutter in
  the root of the source tree and allows HACKING to be split into multiple
  files. (Robert Collins, Alexander Belchenko)

* Clean up the ``WorkingTree4._iter_changes()`` internal loops as well as
  ``DirState.update_entry()``. This optimizes the core logic for ``bzr
  diff`` and ``bzr status`` significantly improving the speed of
  both. (John Arbash Meinel)

bzr 0.16rc2
###########

:Released:  2007-04-30

Bugfixes
********

* Handle the case when you delete a file, and then rename another file
  on top of it. Also handle the case of ``bzr rm --keep foo``. ``bzr
  status`` should show the removed file and an unknown file in its
  place. (John Arbash Meinel, #109993)

* Bundles properly read and write revision properties that have an
  empty value. And when the value is not ASCII.
  (John Arbash Meinel, #109613)

* Fix the bzr commit message to be in text mode.
  (Alexander Belchenko, #110901)

* Also handle when you rename a file and create a file where it used
  to be. (John Arbash Meinel, #110256)

* ``WorkingTree4._iter_changes`` should not descend into unversioned
  directories. (John Arbash Meinel, #110399)

bzr 0.16rc1
###########

:Released:  2007-04-26

Notes When Upgrading
********************

* ``bzr remove`` and ``bzr rm`` will now remove the working file, if
  it could be recovered again.
  This has been done for consistency with svn and the unix rm command.
  The old ``remove`` behaviour has been retained in the new option
  ``bzr remove --keep``, which will just stop versioning the file,
  but not delete it.
  ``bzr remove --force`` have been added which will always delete the
  files.
  ``bzr remove`` is also more verbose.
  (Marius Kruger, #82602)

Improvements
************

* Merge directives can now be supplied as input to `merge` and `pull`,
  like bundles can.  (Aaron Bentley)

* Sending the SIGQUIT signal to bzr, which can be done on Unix by
  pressing Control-Backslash, drops bzr into a debugger.  Type ``'c'``
  to continue.  This can be disabled by setting the environment variable
  ``BZR_SIGQUIT_PDB=0``.  (Martin Pool)

* selftest now supports --list-only to list tests instead of running
  them. (Ian Clatworthy)

* selftest now supports --exclude PATTERN (or -x PATTERN) to exclude
  tests with names that match that regular expression.
  (Ian Clatworthy, #102679)

* selftest now supports --randomize SEED to run tests in a random order.
  SEED is typically the value 'now' meaning 'use the current time'.
  (Ian Clatworthy, #102686)

* New option ``--fixes`` to commit, which stores bug fixing annotations as
  revision properties. Built-in support for Launchpad, Debian, Trac and
  Bugzilla bug trackers. (Jonathan Lange, James Henstridge, Robert Collins)

* New API, ``bzrlib.bugtracker.tracker_registry``, for adding support for
  other bug trackers to ``fixes``. (Jonathan Lange, James Henstridge,
  Robert Collins)

* ``selftest`` has new short options ``-f`` and ``-1``.  (Martin
  Pool)

* ``bzrlib.tsort.MergeSorter`` optimizations. Change the inner loop
  into using local variables instead of going through ``self._var``.
  Improves the time to ``merge_sort`` a 10k revision graph by
  approximately 40% (~700->400ms).  (John Arbash Meinel)

* ``make docs`` now creates a man page at ``man1/bzr.1`` fixing bug 107388.
  (Robert Collins)

* ``bzr help`` now provides cross references to other help topics using
  the _see_also facility on command classes. Likewise the bzr_man
  documentation, and the bzr.1 man page also include this information.
  (Robert Collins)

* Tags are now included in logs, that use the long log formatter.
  (Erik Bågfors, Alexander Belchenko)

* ``bzr help`` provides a clearer message when a help topic cannot be
  found. (Robert Collins, #107656)

* ``bzr help`` now accepts optional prefixes for command help. The help
  for all commands can now be found at ``bzr help commands/COMMANDNAME``
  as well as ``bzr help COMMANDNAME`` (which only works for commands
  where the name is not the same as a more general help topic).
  (Robert Collins)

* ``bzr help PLUGINNAME`` will now return the module docstring from the
  plugin PLUGINNAME. (Robert Collins, #50408)

* New help topic ``urlspec`` which lists the availables transports.
  (Goffredo Baroncelli)

* doc/server.txt updated to document the default bzr:// port
  and also update the blurb about the hpss' current status.
  (Robert Collins, #107125).

* ``bzr serve`` now listens on interface 0.0.0.0 by default, making it
  serve out to the local LAN (and anyone in the world that can reach the
  machine running ``bzr serve``. (Robert Collins, #98918)

* A new smart server protocol version has been added.  It prefixes requests
  and responses with an explicit version identifier so that future protocol
  revisions can be dealt with gracefully.  (Andrew Bennetts, Robert Collins)

* The bzr protocol version 2 indicates success or failure in every response
  without depending on particular commands encoding that consistently,
  allowing future client refactorings to be much more robust about error
  handling. (Robert Collins, Martin Pool, Andrew Bennetts)

* The smart protocol over HTTP client has been changed to always post to the
  same ``.bzr/smart`` URL under the original location when it can.  This allows
  HTTP servers to only have to pass URLs ending in .bzr/smart to the smart
  server handler, and not arbitrary ``.bzr/*/smart`` URLs.  (Andrew Bennetts)

* digest authentication is now supported for proxies and HTTP by the urllib
  based HTTP implementation. Tested against Apache 2.0.55 and Squid
  2.6.5. Basic and digest authentication are handled coherently for HTTP
  and proxy: if the user is provided in the URL (bzr command line for HTTP,
  proxy environment variables for proxies), the password is prompted for
  (only once). If the password is provided, it is taken into account. Once
  the first authentication is successful, all further authentication
  roundtrips are avoided by preventively setting the right authentication
  header(s).
  (Vincent Ladeuil).

Internals
*********

* bzrlib API compatability with 0.8 has been dropped, cleaning up some
  code paths. (Robert Collins)

* Change the format of chroot URLS so that they can be safely manipulated
  by generic URL utilities without causing the resulting URLs to have
  escaped the chroot. A side effect of this is that creating a chroot
  requires an explicit action using a ChrootServer.
  (Robert Collins, Andrew Bennetts)

* Deprecate ``Branch.get_root_id()`` because branches don't have root ids,
  rather than fixing bug #96847.  (Aaron Bentley)

* ``WorkingTree.apply_inventory_delta`` provides a better alternative to
  ``WorkingTree._write_inventory``.  (Aaron Bentley)

* Convenience method ``TestCase.expectFailure`` ensures that known failures
  do not silently pass.  (Aaron Bentley)

* ``Transport.local_abspath`` now raises ``NotLocalUrl`` rather than
  ``TransportNotPossible``. (Martin Pool, Ian Clatworthy)

* New SmartServer hooks facility. There are two initial hooks documented
  in ``bzrlib.transport.smart.SmartServerHooks``. The two initial hooks allow
  plugins to execute code upon server startup and shutdown.
  (Robert Collins).

* SmartServer in standalone mode will now close its listening socket
  when it stops, rather than waiting for garbage collection. This primarily
  fixes test suite hangs when a test tries to connect to a shutdown server.
  It may also help improve behaviour when dealing with a server running
  on a specific port (rather than dynamically assigned ports).
  (Robert Collins)

* Move most SmartServer code into a new package, bzrlib/smart.
  bzrlib/transport/remote.py contains just the Transport classes that used
  to be in bzrlib/transport/smart.py.  (Andrew Bennetts)

* urllib HTTP implementation avoid roundtrips associated with
  401 (and 407) errors once the authentication succeeds.
  (Vincent Ladeuil).

* urlib HTTP now supports querying the user for a proxy password if
  needed. Realm is shown in the prompt for both HTTP and proxy
  authentication when the user is required to type a password.
  (Vincent Ladeuil).

* Renamed SmartTransport (and subclasses like SmartTCPTransport) to
  RemoteTransport (and subclasses to RemoteTCPTransport, etc).  This is more
  consistent with its new home in ``bzrlib/transport/remote.py``, and because
  it's not really a "smart" transport, just one that does file operations
  via remote procedure calls.  (Andrew Bennetts)

* The ``lock_write`` method of ``LockableFiles``, ``Repository`` and
  ``Branch`` now accept a ``token`` keyword argument, so that separate
  instances of those objects can share a lock if it has the right token.
  (Andrew Bennetts, Robert Collins)

* New method ``get_branch_reference`` on ``BzrDir`` allows the detection of
  branch references - which the smart server component needs.

* The Repository API ``make_working_trees`` is now permitted to return
  False when ``set_make_working_trees`` is not implemented - previously
  an unimplemented ``set_make_working_trees`` implied the result True
  from ``make_working_trees``. This has been changed to accomodate the
  smart server, where it does not make sense (at this point) to ever
  make working trees by default. (Robert Collins)

* Command objects can now declare related help topics by having _see_also
  set to a list of related topic. (Robert Collins)

* ``bzrlib.help`` now delegates to the Command class for Command specific
  help. (Robert Collins)

* New class ``TransportListRegistry``, derived from the Registry class, which
  simplifies tracking the available Transports. (Goffredo Baroncelli)

* New function ``Branch.get_revision_id_to_revno_map`` which will
  return a dictionary mapping revision ids to dotted revnos. Since
  dotted revnos are defined in the context of the branch tip, it makes
  sense to generate them from a ``Branch`` object.
  (John Arbash Meinel)

* Fix the 'Unprintable error' message display to use the repr of the
  exception that prevented printing the error because the str value
  for it is often not useful in debugging (e.g. KeyError('foo') has a
  str() of 'foo' but a repr of 'KeyError('foo')' which is much more
  useful. (Robert Collins)

* ``urlutils.normalize_url`` now unescapes unreserved characters, such as "~".
  (Andrew Bennetts)

Bugfixes
********

* Don't fail bundle selftest if email has 'two' embedded.
  (Ian Clatworthy, #98510)

* Remove ``--verbose`` from ``bzr bundle``. It didn't work anyway.
  (Robert Widhopf-Fenk, #98591)

* Remove ``--basis`` from the checkout/branch commands - it didn't work
  properly and is no longer beneficial.
  (Robert Collins, #53675, #43486)

* Don't produce encoding error when adding duplicate files.
  (Aaron Bentley)

* Fix ``bzr log <file>`` so it only logs the revisions that changed
  the file, and does it faster.
  (Kent Gibson, John Arbash Meinel, #51980, #69477)

* Fix ``InterDirstateTre._iter_changes`` to handle when we come across
  an empty versioned directory, which now has files in it.
  (John Arbash Meinel, #104257)

* Teach ``common_ancestor`` to shortcut when the tip of one branch is
  inside the ancestry of the other. Saves a lot of graph processing
  (with an ancestry of 16k revisions, ``bzr merge ../already-merged``
  changes from 2m10s to 13s).  (John Arbash Meinel, #103757)

* Fix ``show_diff_trees`` to handle the case when a file is modified,
  and the containing directory is renamed. (The file path is different
  in this versus base, but it isn't marked as a rename).
  (John Arbash Meinel, #103870)

* FTP now works even when the FTP server does not support atomic rename.
  (Aaron Bentley, #89436)

* Correct handling in bundles and merge directives of timezones with
  that are not an integer number of hours offset from UTC.  Always
  represent the epoch time in UTC to avoid problems with formatting
  earlier times on win32.  (Martin Pool, Alexander Belchenko, John
  Arbash Meinel)

* Typo in the help for ``register-branch`` fixed. (Robert Collins, #96770)

* "dirstate" and "dirstate-tags" formats now produce branches compatible
  with old versions of bzr. (Aaron Bentley, #107168))

* Handle moving a directory when children have been added, removed,
  and renamed. (John Arbash Meinel, #105479)

* Don't preventively use basic authentication for proxy before receiving a
  407 error. Otherwise people willing to use other authentication schemes
  may expose their password in the clear (or nearly). This add one
  roundtrip in case basic authentication should be used, but plug the
  security hole.
  (Vincent Ladeuil)

* Handle HTTP and proxy digest authentication.
  (Vincent Ladeuil, #94034).

Testing
*******

* Added ``bzrlib.strace.strace`` which will strace a single callable and
  return a StraceResult object which contains just the syscalls involved
  in running it. (Robert Collins)

* New test method ``reduceLockdirTimeout`` to drop the default (ui-centric)
  default time down to one suitable for tests. (Andrew Bennetts)

* Add new ``vfs_transport_factory`` attribute on tests which provides the
  common vfs backing for both the readonly and readwrite transports.
  This allows the RemoteObject tests to back onto local disk or memory,
  and use the existing ``transport_server`` attribute all tests know about
  to be the smart server transport. This in turn allows tests to
  differentiate between 'transport to access the branch', and
  'transport which is a VFS' - which matters in Remote* tests.
  (Robert Collins, Andrew Bennetts)

* The ``make_branch_and_tree`` method for tests will now create a
  lightweight checkout for the tree if the ``vfs_transport_factory`` is not
  a LocalURLServer. (Robert Collins, Andrew Bennetts)

* Branch implementation tests have been audited to ensure that all URLs
  passed to Branch APIs use proper URLs, except when local-disk paths
  are intended. This is so that tests correctly access the test transport
  which is often not equivalent to local disk in Remote* tests. As part
  of this many tests were adjusted to remove dependencies on local disk
  access.
  (Robert Collins, Andrew Bennetts)

* Mark bzrlib.tests and bzrlib.tests.TestUtil as providing assertFOO helper
  functions by adding a ``__unittest`` global attribute. (Robert Collins,
  Andrew Bennetts, Martin Pool, Jonathan Lange)

* Refactored proxy and authentication handling to simplify the
  implementation of new auth schemes for both HTTP and proxy.
  (Vincent Ladeuil)


..
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