Bazaar 1.6rc1

This release candidate for bzr 1.6 solidifies the new branch stacking
feature. Bazaar now recommends that users upgrade all knit repositories,
because later formats are much faster. However, we plan to continue read/write and
upgrade support for knit repostories for the forseeable future. Several
other bugs and performance issues were fixed.

Milestone information

Project:
Bazaar
Series:
1.6
Version:
1.6rc1
Released:
2008-08-06  
Registrant:
Martin Pool
Release registered:
2008-08-06
Active:
No. Drivers cannot target bugs and blueprints to this milestone.  

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Release notes 

bzr 1.6rc1 2008-08-06
---------------------

This release candidate for bzr 1.6 solidifies the new branch stacking
feature. Bazaar now recommends that users upgrade all knit repositories,
because later formats are much faster. However, we plan to continue read/write and
upgrade support for knit repostories for the forseeable future. Several
other bugs and performance issues were fixed.

  CHANGES:

    * Knit format repositories are deprecated and bzr will now emit
      warnings whenever it encounters one. Use ``bzr upgrade`` to upgrade
      knit repositories to pack format. (Andrew Bennetts)

  IMPROVEMENTS:

    * ``bzr check`` can now be told which elements at a location it should
      check. (Daniel Watkins)

    * Commit now supports ``--exclude`` (or ``-x``) to exclude some files
      from the commit. (Robert Collins, #3117)

    * Fetching data between repositories that have the same model but no
      optimised fetcher will not reserialise all the revisions, increasing
      performance. (Robert Collins, John Arbash Meinel)

    * Give a more specific error when target branch is not reachable.
      (James Westby)

    * Implemented a custom ``walkdirs_utf8`` implementation for win32.
      This uses a pyrex extension to get direct access to the
      ``FindFirstFileW`` style apis, rather than using ``listdir`` +
      ``lstat``. Shows a very strong improvement in commands like
      ``status`` and ``diff`` which have to iterate the working tree.
      Anywhere from 2x-6x faster depending on the size of the tree (bigger
      trees, bigger benefit.) (John Arbash Meinel)

    * New registry for log properties handles and the method in
      LongLogFormatter to display the custom properties returned by the
      registered handlers. (Guillermo Gonzalez, #162469)

  BUG FIXES:

    * Add more tests that stacking does not create deltas spanning
      physical repository boundaries.
      (Martin Pool, #252428)

    * Better message about incompatible repositories.
      (Martin Pool, #206258)

    * ``bzr branch --stacked`` ensures the destination branch format can
      support stacking, even if the origin does not.
      (Martin Pool)

    * ``bzr export`` no longer exports ``.bzrrules``.
      (Ian Clatworthy)

    * ``bzr serve --directory=/`` now correctly allows the whole
      filesystem to be accessed on Windows, not just the root of the drive
      that Python is running from.
      (Adrian Wilkins, #240910)

    * Deleting directories by hand before running ``bzr rm`` will not
      cause subsequent errors in ``bzr st`` and ``bzr commit``.
      (Robert Collins, #150438)

    * Fix a test case that was failing if encoding wasn't UTF-8.
      (John Arbash Meinel, #247585)

    * Fix "no buffer space available" error when branching with the new
      smart server protocol to or from Windows.
      (Andrew Bennetts, #246180)

    * Fixed problem in branching from smart server.
      (#249256, Michael Hudson, Martin Pool)

    * Handle a file turning in to a directory in TreeTransform.
      (James Westby, #248448)

  API CHANGES:

    * ``MutableTree.commit`` has an extra optional keywork parameter
      ``exclude`` that will be unconditionally supplied by the command
      line UI - plugins that add tree formats may need an update.
      (Robert Collins)

    * The API minimum version for plugin compatibility has been raised to
      1.6 - there are significant changes throughout the code base.
      (Robert Collins)

    * The generic fetch code now uses three attributes on Repository objects
      to control fetch. The streams requested are controlled via :
      ``_fetch_order`` and ``_fetch_uses_deltas``. Setting these
      appropriately allows different repository implementations to recieve
      data in their optimial form. If the ``_fetch_reconcile`` is set then
      a reconcile operation is triggered at the end of the fetch.
      (Robert Collins)

    * The ``put_on_disk`` and ``get_tar_item`` methods in
      ``InventoryEntry`` were deprecated. (Ian Clatworthy)

    * ``Repository.is_shared`` doesn't take a read lock. It didn't
      need one in the first place (nobody cached the value, and
      ``RemoteRepository`` wasn't taking one either). This saves a round
      trip when probing Pack repositories, as they read the ``pack-names``
      file when locked. And during probe, locking the repo isn't very
      useful. (John Arbash Meinel)

  INTERNALS:

    * ``bzrlib.branchbuilder.BranchBuilder`` is now much more capable of
      putting together a real history without having to create a full
      WorkingTree. It is recommended that tests that are not directly
      testing the WorkingTree use BranchBuilder instead. See
      ``BranchBuilder.build_snapshot`` or
      ``TestCaseWithMemoryTree.make_branch_builder``. (John Arbash Meinel)

    * ``bzrlib.builtins.internal_tree_files`` broken into two giving a new
      helper ``safe_relpath_files`` - used by the new ``exclude``
      parameter to commit. (Robert Collins)

    * Make it easier to introduce new WorkingTree formats.
      (Ian Clatworthy)

    * The code for exporting trees was refactored not to use the
      deprecated ``InventoryEntry`` methods. (Ian Clatworthy)

    * RuleSearchers return () instead of [] now when there are no matches.
      (Ian Clatworthy)

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