Bazaar 1.6beta1

Commands that work on the revision history such as push, pull, missing,
uncommit and missing are now substantially faster. This release adds a
translation of some of the user documentation into Spanish. (Contributions of
other translations would be very welcome.) Bazaar 1.6beta1 adds a new network
protocol which is used by default and which allows for more efficient transfers
and future extensions.

Milestone information

Project:
Bazaar
Series:
1.6
Version:
1.6beta1
Released:
2008-06-02  
Registrant:
Martin Pool
Release registered:
2008-06-02
Active:
No. Drivers cannot target bugs and blueprints to this milestone.  

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Release notes 

bzr 1.6beta1 2008-06-02
-----------------------

Commands that work on the revision history such as push, pull, missing,
uncommit and missing are now substantially faster. This release adds a
translation of some of the user documentation into Spanish. (Contributions of
other translations would be very welcome.) Bazaar 1.6beta1 adds a new network
protocol which is used by default and which allows for more efficient transfers
and future extensions.

  NOTES WHEN UPGRADING:

    * There is a new version of the network protocol used for bzr://, bzr+ssh://
      and bzr+http:// connections. This will allow more efficient requests and
      responses, and more graceful fallback when a server is too old to
      recognise a request from a more recent client. Bazaar 1.6 will
      interoperate with 0.16 and later versions, but servers should be upgraded
      when possible. Bazaar 1.6 no longer interoperates with 0.15 and earlier via
      these protocols. Use alternatives like SFTP or upgrade those servers.
      (Andrew Bennetts, #83935)

  CHANGES:

    * Deprecation warnings will not be suppressed when running ``bzr selftest``
      so that developers can see if their code is using deprecated functions.
      (John Arbash Meinel)

  FEATURES:

    * Adding ``-Derror`` will now display a traceback when a plugin fails to
      load. (James Westby)

  IMPROVEMENTS:

    * ``bzr branch/push/pull -r XXX`` now have a helper function for finding
      the revno of the new revision (``Graph.find_distance_to_null``). This
      should make something like ``bzr branch -r -100`` in a shared, no-trees
      repository much snappier. (John Arbash Meinel)

    * ``bzr log --short -r X..Y`` no longer needs to access the full revision
      history. This makes it noticeably faster when logging the last few
      revisions. (John Arbash Meinel)

    * ``bzr ls`` now accepts ``-V`` as an alias for ``--versioned``.
      (Jerad Cramp, #165086)

    * ``bzr missing`` uses the new ``Graph.find_unique_ancestors`` and
      ``Graph.find_differences`` to determine missing revisions without having
      to search the whole ancestry. (John Arbash Meinel, #174625)

    * ``bzr uncommit`` now uses partial history access, rather than always
      extracting the full revision history for a branch. This makes it
      resolve the appropriate revisions much faster (in testing it drops
      uncommit from 1.5s => 0.4s). It also means ``bzr log --short`` is one
      step closer to not using full revision history.
      (John Arbash Meinel, #172649)

  BUGFIXES:

    * ``bzr merge --lca`` should handle when two revisions have no common
      ancestor other than NULL_REVISION. (John Arbash Meinel, #235715)

    * ``bzr push`` with both ``--overwrite`` and ``-r NNN`` options no longer
      fails. (Andrew Bennetts, #234229)

    * Correctly track the base URL of a smart medium when using bzr+http://
      URLs, which was causing spurious "No repository present" errors with
      branches in shared repositories accessed over bzr+http.
      (Andrew Bennetts, #230550)

    * Define ``_remote_is_at_least_1_2`` on ``SmartClientMedium`` so that all
      implementations have the attribute. Fixes 'PyCurlTransport' object has no
      attribute '_remote_is_at_least_1_2' attribute errors.
      (Andrew Bennetts, #220806)

    * Failure to delete an obsolete pack file should just give a warning
      message, not a fatal error. It may for example fail if the file is still
      in use by another process.
      (Martin Pool)

    * Fix MemoryError during large fetches over HTTP by limiting the amount of
      data we try to read per ``recv`` call. The problem was observed with
      Windows and a proxy, but might affect other environments as well.
      (Eric Holmberg, #215426)

    * Handle old merge directives correctly in Merger.from_mergeable. Stricter
      get_parent_map requirements exposed a latent bug here. (Aaron Bentley)

    * Issue a warning and ignore passwords declared in authentication.conf when
      used for an ssh scheme (sftp or bzr+ssh).
      (Vincent Ladeuil, #203186)

    * Make both http implementations raise appropriate exceptions on 403
      Forbidden when POSTing smart requests.
      (Vincent Ladeuil, #230223)

    * Properly *title* header names in http requests instead of capitalizing
      them.
      (Vincent Ladeuil, #229076)

    * Treat an encoding of '' as ascii; this can happen when bzr is run
      under vim on Mac OS X.
      (Neil Martinsen-Burrell)

  DOCUMENTATION:

    * Added directory structure and started translation of docs in spanish.
      (Martin Albisetti, Lucio Albenga)

    * Incorporate feedback from Jelmer Vernooij and Neil Martinsen-Burrell
      on the plugin and integration chapters of the User Guide.
      (Ian Clatworthy)

    * More Bazaar developer documentation about packaging and release process,
      and about use of Python reprs.
      (Martin Pool, Martin Albisetti)

    * Updated Tortise strategy document. (Mark Hammond)

  TESTING:

    * New helper function for splitting test suites
      ``split_suite_by_condition``. (Robert Collins)

  INTERNALS:

  API CHANGES:

    * ``Branch.abspath`` is deprecated; use the Tree or Transport
      instead. (Martin Pool)

    * ``Branch.update_revisions`` now takes an optional ``Graph``
      object. This can be used by ``update_revisions`` when it is
      checking ancestry, and allows callers to prefer request to go to a
      local branch. (John Arbash Meinel)

    * Branch, Repository, Tree and BzrDir should expose a Transport as an
      attribute if they have one, rather than having it indirectly accessible
      as ``.control_files._transport``. This doesn't add a requirement
      to support a Transport in cases where it was not needed before;
      it just simplifies the way it is reached. (Martin Pool)

    * ``bzr missing --mine-only`` will return status code 0 if you have no
      new revisions, but the remote does. Similarly for ``--theirs-only``.
      The new code only checks one side, so it doesn't know if the other
      side has changes. This seems more accurate with the request anyway.
      It also changes the output to print '[This|Other] branch is up to
      date.' rather than displaying nothing. (John Arbash Meinel)

    * ``LockableFiles.put_utf8``, ``put_bytes`` and ``controlfilename``
      are now deprecated in favor of using Transport operations.
      (Martin Pool)

    * Many methods on ``VersionedFile``, ``Repository`` and in
      ``bzrlib.revision`` deprecated before bzrlib 1.5 have been removed.
      (Robert Collins)

    * ``RevisionSpec.wants_revision_history`` can be set to False for a given
      ``RevisionSpec``. This will disable the existing behavior of passing in
      the full revision history to ``self._match_on``. Useful for specs that
      don't actually need access to the full history. (John Arbash Meinel)

    * The constructors of ``SmartClientMedium`` and its subclasses now require a
      ``base`` parameter. ``SmartClientMedium`` implementations now also need
      to provide a ``remote_path_from_transport`` method. (Andrew Bennetts)

    * The default permissions for creating new files and directories
      should now be obtained from ``BzrDir._get_file_mode()`` and
      ``_get_dir_mode()``, rather than from LockableFiles. The ``_set_file_mode``
      and ``_set_dir_mode`` variables on LockableFiles which were advertised
      as a way for plugins to control this are no longer consulted.
      (Martin Pool)

    * ``VersionedFile.join`` is deprecated. This method required local
      instances of both versioned file objects and was thus hostile to being
      used for streaming from a smart server. The new get_record_stream and
      insert_record_stream are meant to efficiently replace this method.
      (Robert Collins)

    * ``WorkingTreeFormat2.stub_initialize_remote`` is now private.
      (Martin Pool)

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