Bazaar Release Notes

bzr 2.1.5

2.1.5:NOT RELEASED YET

Compatibility Breaks

New Features

Bug Fixes

• Accessing a packaging branch on Launchpad (eg, lp:ubuntu/bzr) now checks to see if the most recent published source package version for that project is present in the branch tags. This should help developers trust whether the packaging branch is up-to-date and can be used for new changes. The level of verbosity is controlled by the config item launchpad.packaging_verbosity. It can be set to one of

  off

  disable all checks

  minimal

  only display if the branch is out-of-date

  short

  also display single-line up-to-date and missing,

  all

  (default) display multi-line content for all states

  (John Arbash Meinel, #609187, #812928)

Improvements

Documentation

API Changes

Internals

Testing

bzr 2.1.4

2.1.4:2011-05-16

The fourth release in our 2.1 series addresses some user-inconvenience bugs. None are critical, but upgrading is recommended for all users on earlier 2.1 releases.

Compatibility Breaks

• Launchpad has announced that the edge.launchpad.net instance is deprecated and may be shut down in the future <http://blog.launchpad.net/general/edge-is-deprecated>. Bazaar has therefore been updated in this release to talk to the main (launchpad.net) servers, rather than the edge ones. (Vincent Ladeuil, #583667)

New Features

None.

Bug Fixes

• Avoid UnicodeDecodeError in bzr add with multiple files under a non-ascii path on windows from symlink support addition. (Martin [gz], #686611)
• Skip tests that needs a bzr source tree when there isn’t one. This is needed to succesfully run the test suite for installed versions. (Vincent Ladeuil, #644855).
• Skip the tests that requires respecting the chmod bits when running as root. (Vincent Ladeuil, #646133)
• Using bzr with lp: URLs behind an HTTP proxy should work. (Robert Collins, #558343)

Improvements

Documentation

API Changes

Internals

Testing

bzr 2.1.3

Codename:Do run run 2.1.3:2010-09-17

The third release in our 2.1 series addresses several user-inconvenience bugs (and includes the fixes done in 2.0.6). None are critical, but upgrading is recommended for all users on earlier 2.1 releases.

Bug Fixes

• Additional merges after an unrelated branch has been merged with its history no longer crash when deleted files are involved. (Vincent Ladeuil, John Arbash Meinel, #375898)
• bzr add SYMLINK/FILE now works properly when the symlink points to a previously-unversioned directory within the tree: the directory is marked versioned too. (Martin Pool, #192859)
• bzr commit SYMLINK now works, rather than trying to commit the target of the symlink. (Martin Pool, John Arbash Meinel, #128562)
• bzr upgrade now creates the backup.bzr directory with the same permissions as .bzr directory on a POSIX OS. (Parth Malwankar, #262450)
• Configuration files in ${BZR_HOME} are now written in an atomic way which should help avoid problems with concurrent writers. (Vincent Ladeuil, #525571)
• Don’t traceback trying to unversion children files of an already unversioned directory. (Vincent Ladeuil, #494221)
• Don’t traceback when a lockdir’s held/info file is corrupt (e.g. contains only NUL bytes). Instead warn the user, and allow bzr break-lock to remove it. (Andrew Bennetts, #619872)
• Fix AttributeError on parent.children when adding a file under a directory that was a symlink in the previous commit. (Martin Pool, #192859)
• Prevent CHKMap.apply_delta from generating non-canonical CHK maps, which can result in “missing referenced chk root keys” errors when fetching from repositories with affected revisions. (Andrew Bennetts, #522637)
• Raise ValueError instead of a string exception. (John Arbash Meinel, #586926)
• Reduce peak memory by one copy of compressed text. (John Arbash Meinel, #566940)
• Repositories accessed via a smart server now reject being stacked on a repository in an incompatible format, as is the case when accessing them via other methods. This was causing fetches from those repositories via a smart server (e.g. using bzr branch) to receive invalid data. (Andrew Bennetts, #562380)
• Selftest with versions of subunit that support stopTestRun will no longer error. This error was caused by 2.0 not being updated when upstream python merged the end of run patch, which chose stopTestRun rather than done. (Robert Collins, #571437)
• Stop AttributeError: 'module' object has no attribute 'ElementTree' being thrown from xml_serializer on certain cElementTree setups. (Martin [gz], #254278)
• When passing a file to UTF8DirReader make sure to close the current directory file handle after the chdir fails. Otherwise when passing many filenames into a command line bzr status we would leak descriptors. (John Arbash Meinel, #583486)

Testing

• build_tree_contents can create symlinks. (Martin Pool, John Arbash Meinel)

bzr 2.1.2

2.1.2:2010-05-28

This release fixes two critical networking issues with older servers and with interrupted system call errors when pushing or pulling. We recommend upgrading to anyone running a 2.1.x version of bzr.

Bug Fixes

• bzr clean-tree should not delete nested bzrdirs. Required for proper support of bzr-externals and scmproj plugins. (Alexander Belchenko, bug #572098)
• bzr switch does not die if a ConfigurableFileMerger is used. (Aaron Bentley, #559436)
• Do not register a SIGWINCH signal handler, instead just poll for the terminal width as needed. This avoids the “Interrupted System Call” problems that occur on POSIX with all currently released versions of Python. (Andrew Bennetts, #583941)
• Fixed AssertionError when accessing smart servers running Bazaar versions before 1.6. (Andrew Bennetts, #528041)
• Reset siginterrupt flag to False every time we handle a signal installed with set_signal_handler(..., restart_syscall=True) (from bzrlib.osutils. Reduces the likelihood of “Interrupted System Call” errors compared to registering signal.signal directly. (Andrew Bennetts)
• Reduce peak memory by one copy of compressed text. (John Arbash Meinel, #566940)
• Support Pyrex 0.9.9, required changing how we handle exceptions in Pyrex. (John Arbash Meinel, #582656)
• When passing a file to UTF8DirReader make sure to close the current directory file handle after the chdir fails. Otherwise when passing many filenames into a command line bzr status we would leak descriptors. (John Arbash Meinel, #583486)

Internals

• _remember_remote_is_before no longer raises AssertionError when suboptimal network behaviour is noticed; instead it just mutters to the log file (and warns the user if they have set the hpss debug flag). This was causing unnecessary aborts for performance bugs that are minor at worst. (Andrew Bennetts, #528041)

bzr 2.1.1

2.1.1:2010-03-24

This is a small bugfix release. Upgrading is recommended for anyone running 2.1.0 or earlier.

Bug Fixes

• Allow syscalls to automatically restart when TextUIFactory‘s SIGWINCH handler is invoked, avoiding EINTR errors during blocking IO, which are often poorly handled by Python’s libraries and parts of bzrlib. (Andrew Bennetts, #496813)
• Avoid malloc(0) in patiencediff, which is non-portable. (Martin Pool, #331095)
• Fix plugin packaging on Windows. (Ian Clatworthy, #524162)
• Fix stub SFTP test server to call os.getcwdu(). (Vincent Ladeuil, #526221, #526353)
• Fixed CHM generation by moving the NEWS section template into a separate file. (Ian Clatworthy, #524184)
• Merge correctly when this_tree is not a WorkingTree. (Aaron Bentley)
• Register SIGWINCH handler only when creating a TextUIFactory; avoids problems importing bzrlib from a non-main thread. (Elliot Murphy, #521989)
• Repositories accessed via a smart server now reject being stacked on a repository in an incompatible format, as is the case when accessing them via other methods. This was causing fetches from those repositories via a smart server (e.g. using bzr branch) to receive invalid data. (Andrew Bennetts, #562380)
• Standardize the error handling when creating a new StaticTuple (problems will raise TypeError). (Matt Nordhoff, #457979)
• Warn if pyrex is too old to compile the new SimpleSet and StaticTuple extensions, rather than having the build fail randomly. (John Arbash Meinel, #449776)

Documentation

• Added a link to the Desktop Guide. (Ian Clatworthy)
• Added What’s New in Bazaar 2.1 document. (Ian Clatworthy)
• Drop Google Analytics from the core docs as they caused problems in the CHM files. (Ian Clatworthy, #502010)

API Changes

• Added bzrlib.osutils.set_signal_handler, a convenience function that can set a signal handler and call signal.siginterrupt(signum, False) for it, if the platform and Python version supports it. (Andrew Bennetts, #496813)

bzr 2.1.0

Codename:Strasbourg 2.1.0:2010-02-11

This release marks our second long-term-stable series. The Bazaar team has decided that we will continue to make bugfix-only 2.0.x and 2.1.x releases, along with 2.2 development releases.

This is a fairly incremental update, focusing on polish and bugfixing. There are no changes for supported disk formats. Key updates include reduced memory consumption for many operations, a new per-file merge hook, ignore patterns can now include ‘!’ to exclude files, globbing support for all commands on Windows, and support for addressing home directories via bzr+ssh://host/~/ syntax.

Users are encouraged to upgrade from the 2.0 stable series.

Bug Fixes

• Don’t require testtools to use SFTP. (Vincent Ladeuil, #516183)
• Fix “AttributeError in Inter1and2Helper” during fetch. (Martin Pool, #513432)
• bzr update performs the two merges in a more logical order and will stop when it encounters conflicts. (Gerard Krol, #113809)
• Give a better error message when doing bzr bind in an already bound branch. (Neil Martinsen-Burrell, #513063)
• Ignore KeyError from remove_index during _abort_write_group in a pack repository, which can happen harmlessly if the abort occurs during finishing the write group. Also use bzrlib.cleanup so that any other errors that occur while aborting the individual packs won’t be hidden by secondary failures when removing the corresponding indices. (Andrew Bennetts, #423015)
• Set the mtime of files exported to a directory by bzr export all to the same value to avoid confusing make and other date-based build systems. (Robert Collins, #515631)

Improvements

• Fetching into experimental formats will now print a warning. (Jelmer Vernooij)

API Changes

• Repository.deserialise_inventory has been renamed to Repository._deserialise_inventory to indicate it is private. (Jelmer Vernooij)
• Repository.get_inventory_xml has been renamed to Repository._get_inventory_xml to indicate it is private. (Jelmer Vernooij)
• Repository.serialise_inventory has been renamed to Repository._serialise_inventory to indicate it is private.
• Using the bzrlib.chk_map module from within multiple threads at the same time was broken due to race conditions with a module level page cache. This shows up as a KeyError in the bzrlib.lru_cache code with bzrlib.chk_map in the backtrace, and can be triggered without using the same high level objects such as bzrlib.repository.Repository from different threads. chk_map now uses a thread local cache which may increase memory pressure on processes using threads. (Robert Collins, John Arbash Meinel, #514090)
• The new merge_file_content should now be ok with tests to avoid regressions. (Vincent Ladeuil, #515597)

Internals

• Use bzrlib.cleanup rather than less robust try/finally blocks in several places in bzrlib.merge. This avoids masking prior errors when errors like ImmortalPendingDeletion occur during cleanup in do_merge. (Andrew Bennetts, #517275)

API Changes

• The remove_index method of bzrlib.repofmt.pack_repo.AggregateIndex no longer takes a pack argument. This argument was always ignored. (Andrew Bennetts, #423015)

bzr 2.1.0rc2

Codename:after the bubbles 2.1.0rc2:2010-01-29

This is a quick-turn-around to update a small issue with our new per-file merge hook. We expect no major changes from this to the final 2.1.0.

API Changes

• The new merge_file_content hook point has been altered to provide a better API where state for extensions can be stored rather than the too-simple function based approach. This fixes a performance regression where branch configuration would be parsed per-file during merge. As part of this the included news_merger has been refactored into a base helper class bzrlib.merge.ConfigurableFileMerger. (Robert Collins, John Arbash Meinel, #513822)

bzr 2.1.0rc1

Codename:the ‘new’ stable 2.1.0rc1:2009-01-21

This is the first stable release candidate for Bazaar’s 2.1 series. From this point onwards, the 2.1 series will be considered stable (as the 2.0 series) and only bugfixes are expected to be incorporated. The dozen or so bugfixes in the 2.0.4 release are also included in this release (along with more than 15 more bugfixes). Some of the interesting features are support for per-file merge hooks, bzr unshelve --preview, support for using ! in ignore files to exclude files from being ignored, a small memory leak was squashed, and many ObjectNotLocked errors were fixed. This looks to be a very good start for a new stable series.

New Features

• Add bug information to log output when available. (Neil Martinsen-Burrell, Guillermo Gonzalez, #251729)
• Added merge_file_content hook point to Merger, allowing plugins to register custom merge logic, e.g. to provide smarter merging for particular files.
• Bazaar now includes the news_merge plugin. It is disabled by default, to enable it add a news_merge_files option to your configuration. Consult bzr help news_merge for more information. (Andrew Bennetts)
• bzr branch now takes a --bind option. This lets you branch and bind all in one command. (Ian Clatworthy)
• bzr switch now takes a --revision option, to allow switching to a specific revision of a branch. (Daniel Watkins, #183559)
• bzr unshelve --preview can now be used to show how a patch on the shelf would be applied to the working tree. (Guilherme Salgado, #308122)
• bzr update now takes a --revision argument. This lets you change the revision of the working tree to any revision in the ancestry of the current or master branch. (Matthieu Moy, Mark Hammond, Martin Pool, #45719)
• -Dbytes can now be used to display the total number of bytes transferred for the current command. This information is always logged to .bzr.log for later inspection. (John Arbash Meinel)
• New ignore patterns. Patterns prefixed with ‘!’ are exceptions to ignore patterns and take precedence over regular ignores. Such exceptions are used to specify files that should be versioned which would otherwise be ignored. Patterns prefixed with ‘!!’ act as regular ignore patterns, but have highest precedence, even over the ‘!’ exception patterns. (John Whitley, #428031)
• The supress_warnings configuration option has been introduced to disable various warnings (it currently only supports the format_deprecation warning). The new option can be set in any of the following locations: bazaar.conf, locations.conf and/or branch.conf. (Ted Gould, Matthew Fuller, Vincent Ladeuil)

Bug Fixes

• Always show a message if an OS error occurs while trying to run a user-specified commit message editor. (Martin Pool, #504842)
• bzr diff will now use the epoch when it is unable to determine the timestamp of a file, if the revision it was introduced in is a ghost. (Jelmer Vernooij, #295611)
• bzr switch -b can now create branches that are located using directory services such as lp:, even when the branch name doesn’t contain a ‘/’. (Neil Martinsen-Burrell, #495263)
• bzr unshelve has improved messages about what it is doing. (Neil Martinsen-Burrell, #496917)
• Concurrent autopacking is more resilient to already-renamed pack files. If we find that a file we are about to obsolete is already obsoleted, we do not try to rename it, and we leave the file in obsolete_packs. The code is also fault tolerant if a file goes missing, assuming that another process already removed the file. (John Arbash Meinel, Gareth White, #507557)
• Fix “Too many concurrent requests” in reconcile when network connection fails. (Andrew Bennetts, #503878)
• Fixed a side effect mutation of RemoteBzrDirFormat._network_name that caused some tests to fail when run in a non-default order. Probably no user impact. (Martin Pool, #504102)
• Fixed ObjectNotLocked error in bzr cat -rbranch:../foo FILE. (Andrew Bennetts, #506274)
• FTP transports support Unicode paths by encoding/decoding them as utf8. (Vincent Ladeuil, #472161)
• Listen to the SIGWINCH signal to update the terminal width. (Vincent Ladeuil, #316357)
• Progress bars are now hidden when --quiet is given. (Martin Pool, #320035)
• SilentUIFactory now supports make_output_stream and discards whatever is written to it. This un-breaks some plugin tests that depended on this behaviour. (Martin Pool, #499757)
• When operations update the working tree, all affected files should end up with the same mtime. (eg. when versioning a generated file, if you update the source and the generated file together, the generated file should appear up-to-date.) (John Arbash Meinel, Martin <gzlist>, #488724)

Improvements

• Added add_cleanup and cleanup_now to bzrlib.command.Command. All the builtin commands now use add_cleanup rather than try/finally blocks where applicable as it is simpler and more robust. (Andrew Bennetts)
• All except a small number of storage formats are now hidden, making the help for numerous commands far more digestible. (Ian Clatworthy)
• Attempts to open a shared repository as a branch (e.g. bzr branch path/to/repo) will now include “location is a repository” as a hint in the error message. (Brian de Alwis, Andrew Bennetts, #440952)
• Push will now inform the user when they are trying to push to a foreign VCS for which roundtripping is not supported, and will suggest them to use dpush. (Jelmer Vernooij)
• The version of bzr being run is now written to the log file. (__monty__, #257170)
• Transport network activity indicator is shown more of the time when Bazaar is doing network IO. (Martin Pool)

Documentation

• Add documentation on creating merges with more than one parent. (Neil Martinsen-Burrell, #481526)
• Better explain the –uncommitted option of merge. (Neil Martinsen-Burrell, #505088)
• Improve discussion of pending merges in the documentation for revert. (Neil Martinsen-Burrell, #505093)
• Improved help for bzr send. (Martin Pool, Bojan Nikolic)
• There is a System Administrator’s Guide in doc/en/admin-guide, including discussions of installation, relevant plugins, security and backup. (Neil Martinsen-Burrell)
• The conflicts help topic has been renamed to conflict-types. (Ian Clatworthy)
• The User Reference is now presented as a series of topics. Many of the included topics have link and format tweaks applied. (Ian Clatworthy)

API Changes

• Added cachedproperty decorator to bzrlib.decorators. (Andrew Bennetts)
• Many test features were renamed from FooFeature to foo_feature to be consistent with instances being lower case and classes being CamelCase. For the features that were more likely to be used, we added a deprecation thunk, but not all. (John Arbash Meinel)
• Merger classes (such as Merge3Merger) now expect a this_branch parameter in their constructors, and provide this_branch as an attribute. (Andrew Bennetts)
• The Branch hooks pre_change_branch_tip no longer masks exceptions raised by plugins - the original exceptions are now preserved. (Robert Collins)
• The Transport Server.tearDown method is now renamed to stop_server and setUp to start_server for consistency with our normal naming pattern, and to avoid confusion with Python’s TestCase.tearDown. (Martin Pool)
• WorkingTree.update implementations must now accept a revision parameter.

Internals

• Added BzrDir.open_branchV3 smart server request, which can receive a string of details (such as “location is a repository”) as part of a nobranch response. (Andrew Bennetts, #440952)
• New helper osutils.UnicodeOrBytesToBytesWriter which encodes unicode objects but passes str objects straight through. This is used for selftest but may be useful for diff and other operations that generate mixed output. (Robert Collins)
• New exception NoRoundtrippingSupport, for use by foreign branch plugins. (Jelmer Vernooij)

Testing

• bzrlib.tests.permute_for_extension is a helper that simplifies running all tests in the current module, once against a pure python implementation, and once against an extension (pyrex/C) implementation. It can be used to dramatically simplify the implementation of load_tests. (John Arbash Meinel)
• bzrlib.tests.TestCase now subclasses testtools.testcase.TestCase. This permits features in testtools such as getUniqueInteger and getUniqueString to be used. Because of this, testtools version 0.9.2 or newer is now a dependency to run bzr selftest. Running with versions of testtools less than 0.9.2 will cause bzr to error while loading the test suite. (Robert Collins)
• Shell-like tests now support the command “mv” for moving files. The syntax for mv file1 file2, mv dir1 dir2 and mv file dir is supported. (Neil Martinsen-Burrell)
• The test progress bar no longer distinguishes tests that ‘errored’ from tests that ‘failed’ - they’re all just failures. (Martin Pool)

bzr 2.1.0b4

Codename:san francisco airport 2.1.0b4:2009-12-14

The fourth beta release in the 2.1 series brings with it a significant number of bugfixes (~20). The test suite is once again (finally) “green” on Windows, and should remain that way for future releases. There are a few performance related updates (faster upgrade and log), and several UI tweaks. There has also been a significant number of tweaks to the runtime documentation. 2.1.0b4 include everything from the 2.0.3 release.

Compatibility Breaks

• The BZR_SSH environmental variable may now be set to the path of a secure shell client. If currently set to the value ssh it will now guess the vendor of the program with that name, to restore the old behaviour that indicated the SSH Corporation client use sshcorp instead as the magic string. (Martin <gzlist@googlemail.com>, #176292)

New Features

• bzr commit now has a --commit-time option. (Alexander Sack, #459276)
• -Dhpss now increases logging done when run on the bzr server, similarly to how it works on the client. (John Arbash Meinel)
• New option bzr unshelve --keep applies the changes and leaves them on the shelf. (Martin Pool, Oscar Fuentes, #492091)
• The BZR_COLUMNS envrionment variable can be set to force bzr to respect a given terminal width. This can be useful when output is redirected or in obscure cases where the default value is not appropriate. Pagers can use it to get a better control of the line lengths. (Vincent Ladeuil)
• The new command bzr lp-mirror will request that Launchpad update its mirror of a local branch. This command will only function if launchpadlib is installed. (Jonathan Lange)

Bug Fixes

• After renaming a file, the dirstate could accidentally reference source\\path rather than source/path on Windows. This might be a source of some dirstate-related failures. (John Arbash Meinel)
• bzr commit now detects commit messages that looks like file names and issues a warning. (Gioele Barabucci, #73073)
• bzr ignore / no longer causes an IndexError. (Gorden Tyler, #456036)
• bzr log -n0 -rN should not return revisions beyond its merged revisions. (#325618, #484109, Marius Kruger)
• bzr merge --weave and --lca will now create .BASE files for files with conflicts (similar to --merge3). The contents of the file is a synthesis of all bases used for the merge. (John Arbash Meinel, #40412)
• bzr mv --quiet really is quiet now. (Gordon Tyler, #271790)
• bzr serve is more clear about the risk of supplying –allow-writes. (Robert Collins, #84659)
• bzr serve --quiet really is quiet now. (Gordon Tyler, #252834)
• Fix bug with redirected URLs over authenticated HTTP. (Glen Mailer, Neil Martinsen-Burrell, Vincent Ladeuil, #395714)
• Interactive merge doesn’t leave branch locks behind. (Aaron Bentley)
• Lots of bugfixes for the test suite on Windows. We should once again have a test suite with no failures on Windows. (John Arbash Meinel)
• osutils.terminal_width() obeys the BZR_COLUMNS environment variable but returns None if the terminal is not a tty (when output is redirected for example). Also fixes its usage under OSes that doesn’t provide termios.TIOCGWINSZ. Make sure the corresponding tests runs on windows too. (Joke de Buhr, Vincent Ladeuil, #353370, #62539) (John Arbash Meinel, Vincent Ladeuil, #492561)
• Terminate SSH subprocesses when no references to them remain, fixing subprocess and file descriptor leaks. (Andrew Bennetts, #426662)
• The --hardlink option of bzr branch and bzr checkout now works for 2a format trees. Only files unaffected by content filters will be hardlinked. (Andrew Bennetts, #408193)
• The new glob expansion on Windows would replace all \ characters with / even if it there wasn’t a glob to expand, the arg was quoted, etc. Now only change slashes if there is something being glob expanded. (John Arbash Meinel, #485771)
• Use our faster KnownGraph.heads() functionality when computing the new rich-root heads. This can cut a conversion time in half (mysql from 13.5h => 6.2h) (John Arbash Meinel, #487632)
• When launching a external diff tool via bzr diff –using, temporary files are no longer created, rather, the path to the file in the working tree is passed to the external diff tool. This allows the file to be edited if the diff tool provides for this. (Gary van der Merwe, #490738)
• The launchpad-open command can now be used from a subdirectory of a branch, not just from the root of the branch. (Neil Martinsen-Burrell, #489102)

Improvements

• bzr log is now faster. (Ian Clatworthy)
• bzr update provides feedback on which branch it is up to date with. (Neil Martinsen-Burrell)
• bzr upgrade from pre-2a to 2a can be significantly faster (4x). For details see the xml8 patch and heads() improvements. (John Arbash Meinel)
• bzrlib.urlutils.local_path_from_url now accepts ‘file://localhost/‘ as well as ‘file:///‘ URLs on POSIX. (Michael Hudson)
• The progress bar now shows only a spinner and per-operation counts, not an overall progress bar. The previous bar was often not correlated with real overall operation progress, either because the operations take nonlinear time, or because at the start of the operation Bazaar couldn’t estimate how much work there was to do. (Martin Pool)

Documentation

• Lots of documentation tweaks for inline help topics and command help information.

API Changes

• bzrlib.textui (vestigial module) removed. (Martin Pool)
• The Launchpad plugin now has a function login which will log in to Launchpad with launchpadlib, and load_branch which will return the Launchpad Branch object corresponding to a given Bazaar Branch object. (Jonathan Lange)

Internals

• New test Feature: ModuleAvailableFeature. It is designed to make it easier to handle what tests you want to run based on what modules can be imported. (Rather than lots of custom-implemented features that were basically copy-and-pasted.) (John Arbash Meinel)
• osutils.timer_func() can be used to get either time.time() or time.clock() when you want to do performance timing. time.time() is limited to 15ms resolution on Windows, but time.clock() gives CPU and not wall-clock time on other platforms. (John Arbash Meinel)
• Several code paths that were calling Transport.get().read() have been changed to the equalivent Transport.get_bytes(). The main difference is that the latter will explicitly call file.close(), rather than expecting the garbage collector to handle it. This helps with some race conditions on Windows during the test suite and SFTP tests. (John Arbash Meinel)

Testing

• TestCaseWithMemoryTransport no longer sets $HOME and $BZR_HOME to unicode strings. (Michael Hudson, #464174)

bzr 2.1.0b3

Codename:after sprint recovery 2.1.0b3:2009-11-16

This release was pushed up from its normal release cycle due to a regression in python 2.4 compatibility in 2.1.0b2. Since this regression was caught before 2.1.0b2 was officially announced, the full changelog includes both 2.1.0b3 and 2.1.0b2 changes.

Highlights of 2.1.0b3 are: new globbing code for all commands on Windows, the test suite now conforms to python’s trunk enhanced semantics (skip, etc.), and bzr info -v will now report the correct branch and repo formats for Remote objects.

New Features

• Users can define a shelve editor to provide shelf functionality at a granularity finer than per-patch-hunk. (Aaron Bentley)

Bug Fixes

• Fix for shell completion and short options. (Benoît PIERRE)
• Fix bzr --profile-imports with Python 2.6. (Martin Pool)
• Hooks daughter classes should always call the base constructor. (Alexander Belchenko, Vincent Ladeuil, #389648)
• Improve “Binary files differ” hunk handling. (Aaron Bentley, #436325)
• On Windows, do glob expansion at the command-line level (as is usually done in bash, etc.) This means that all commands get glob expansion (bzr status, bzr add, bzr mv, etc). It uses a custom command line parser, which allows us to know if a given section was quoted. It means you can now do bzr ignore "*.py". (John Arbash Meinel, #425510, #426410, #194450)
• Sanitize commit messages that come in from the ‘-m’ flag. We translate ‘rn’ => ‘n’ and a plain ‘r’ => ‘n’. The storage layer doesn’t allow those because XML store silently translate it anyway. (The parser auto-translates rn => n in ways that are hard for us to catch.)
• Show correct branch and repository format descriptions in bzr info -v on a smart server location. (Andrew Bennetts, #196080)
• The fix for bug #186920 accidentally broke compatibility with python 2.4. (Vincent Ladeuil, #475585)
• Using Repository.get_commit_builder().record_iter_changes() now correctly sets self.inv_sha1 to a sha1 string and self.new_inventory to an Inventory instance after calling self.finish_inventory(). (Previously it accidently set both values as a tuple on self.inv_sha1. This was missed because repo.add_revision ignores the supplied inventory sha1 and recomputes the sha1 from the repo directly. (John Arbash Meinel)
• Shelve command refuse to run if there is no real terminal. (Alexander Belchenko)
• Avoid unnecessarily flushing of trace file; it’s now unbuffered at the Python level. (Martin Pool)

Documentation

• Include Japanese translations for documentation (Inada Naoki)
• New API ui_factory.make_output_stream to be used for sending bulk (rather than user-interaction) data to stdout. This automatically coordinates with progress bars or other terminal activity, and can be overridden by GUIs. (Martin Pool, 493944)

Internals

• Some of the core groupcompress functionality now releases the GIL before operation. Similar to how zlib and bz2 operate without the GIL in the core compression and decompression routines. (John Arbash Meinel)

Testing

• -Dhpssvfs will now trigger on RemoteBzrDir._ensure_real, providing more debugging of VFS access triggers. (Robert Collins)
• KnownFailure is now signalled to ExtendedTestResult using the same method that Python 2.7 uses - addExpectedFailure. (Robert Collins)
• --parallel=fork is now compatible with –subunit. (Robert Collins, Vincent Ladeuil, #419776)
• Reporting of failures shows test ids not descriptions and thus shows parameterised tests correctly. (Robert Collins)
• TestNotApplicable is now handled within the TestCase.run method rather than being looked for within ExtendedTestResult.addError. This provides better handling with other TestResult objects, degrading to sucess rather than error. (Robert Collins)
• The private method _testConcluded on ExtendedTestResult has been removed - it was empty and unused. (Robert Collins)
• UnavailableFeature is now handled within the TestCase.run method rather than being looked for within addError. If the Result object does not have an addNotSupported method, addSkip is attempted instead, and failing that addSuccess. (Robert Collins)
• When a TestResult does not have an addSkip method, skipped tests are now reported as successful tests, rather than as errors. This change is to make it possible to get a clean test run with a less capable TestResult. (Robert Collins)

bzr 2.1.0b2

Codename:a load off my mind 2.1.0b2:2009-11-02

This is our second feature-filled release since 2.0, pushing us down the path to a 2.1.0. Once again, all bugfixes in 2.0.2 are present in 2.1.0b2.

Key highlights in this release are: improved handling of failures-during-cleanup for commit, fixing a long-standing bug with bzr+http and shared repositories, all lp: URLs to be resolved behind proxies, and a new StaticTuple datatype, allowing us to reduce memory consumption (50%) and garbage collector overhead (40% faster) for many operations.

• A new --concurrency option has been added as well as an associated BZR_CONCURRENCY environment variable to specify the number of processes that can be run concurrently when running bzr selftest. The command-line option overrides the environment variable if both are specified. If none is specified. the number of processes is obtained from the OS as before. (Matt Nordhoff, Vincent Ladeuil)

Bug Fixes

• bzr+http servers no longer give spurious jail break errors when serving branches inside a shared repository. (Andrew Bennetts, #348308)
• Errors during commit are handled more robustly so that knock-on errors are less likely to occur, and will not obscure the original error if they do occur. This fixes some causes of TooManyConcurrentRequests and similar errors. (Andrew Bennetts, #429747, #243391)
• Launchpad URLs can now be resolved from behind proxies. (Gordon Tyler, Vincent Ladeuil, #186920)
• Reduce the strictness for StaticTuple, instead add a debug flag -Dstatic_tuple which will change apis to be strict and raise errors. This way, most users won’t see failures, but developers can improve internals. (John Arbash Meinel, #471193)
• TreeTransform.adjust_path updates the limbo paths of descendants of adjusted files. (Aaron Bentley)
• Unicode paths are now handled correctly and consistently by the smart server. (Andrew Bennetts, Michael Hudson, #458762)

Improvements

• When reading index files, we now use a StaticTuple rather than a plain tuple object. This generally gives a 20% decrease in peak memory, and can give a performance boost up to 40% on large projects. (John Arbash Meinel)
• Peak memory under certain operations has been reduced significantly. (eg, ‘bzr branch launchpad standalone’ is cut in half) (John Arbash Meinel)

Documentation

• Filtered views user documentation upgraded to refer to format 2a instead of pre-2.0 formats. (Ian Clatworthy)

API Changes

• Remove deprecated CLIUIFactory. (Martin Pool)
• UIFactory now has new show_error, show_message and show_warning methods, which can be hooked by non-text UIs. (Martin Pool)

Internals

• Added bzrlib._simple_set_pyx. This is a hybrid between a Set and a Dict (it only holds keys, but you can lookup the object located at a given key). It has significantly reduced memory consumption versus the builtin objects (1/2 the size of Set, 1/3rd the size of Dict). This is used as the interning structure for StaticTuple objects. (John Arbash Meinel)
• bzrlib._static_tuple_c.StaticTuple is now available and used by the btree index parser and the chk map parser. This class functions similarly to tuple objects. However, it can only point to a limited collection of types. (Currently StaticTuple, str, unicode, None, bool, int, long, float, but not subclasses). This allows us to remove it from the garbage collector (it cannot be in a cycle), it also allows us to intern the objects. In testing, this can reduce peak memory by 20-40%, and significantly improve performance by removing objects from being inspected by the garbage collector. (John Arbash Meinel)
• GroupCompressBlock._ensure_content() will now release the zlib.decompressobj() when the first request is for all of the content. (Previously it would only be released if you made a request for part of the content, and then all of it later.) This turns out to be a significant memory savings, as a zstream carries around approx 260kB of internal state and buffers. (For branching bzr.dev this drops peak memory from 382MB => 345MB.) (John Arbash Meinel)
• When streaming content between 2a format repositories, we now clear caches from earlier versioned files. (So ‘revisions’ is cleared when we start reading ‘inventories’, etc.) This can have a significant impact on peak memory for initial copies (~200MB). (John Arbash Meinel)

bzr 2.1.0b1

Codename:While the cat is away 2.1.0b1:2009-10-14

This is the first development release in the new split “stable” and “development” series. As such, the release is a snapshot of bzr.dev without creating a release candidate first. This release includes a fair amount of internal changes, with deprecated code being removed, and several new feature developments. People looking for a stable code base with only bugfixes should focus on the 2.0.1 release. All bugfixes present in 2.0.1 are present in 2.1.0b1.

Highlights include support for bzr+ssh://host/~/homedir style URLs, finer control over the plugin search path via extended BZR_PLUGIN_PATH syntax, visible warnings when extension modules fail to load, and improved error handling during unlocking.

New Features

• Bazaar can now send mail through Apple OS X Mail.app. (Brian de Alwis)

• bzr+ssh and bzr paths can now be relative to home directories specified in the URL. Paths starting with a path segment of ~ are relative to the home directory of the user running the server, and paths starting with ~user are relative to the home directory of the named user. For example, for a user “bob” with a home directory of /home/bob, these URLs are all equivalent:

  • bzr+ssh://bob@host/~/repo
  • bzr+ssh://bob@host/~bob/repo
  • bzr+ssh://bob@host/home/bob/repo

  If bzr serve was invoked with a --directory argument, then no home directories outside that directory will be accessible via this method.

  This is a feature of bzr serve, so pre-2.1 clients will automatically benefit from this feature when bzr on the server is upgraded. (Andrew Bennetts, #109143)

• Extensions can now be compiled if either Cython or Pyrex is available. Currently Pyrex is preferred, but that may change in the future. (Arkanes)

• Give more control on BZR_PLUGIN_PATH by providing a way to refer to or disable the user, site and core plugin directories. (Vincent Ladeuil, #412930, #316192, #145612)

Bug Fixes

• Bazaar’s native protocol code now correctly handles EINTR, which most noticeably occurs if you break in to the debugger while connected to a bzr+ssh server. You can now can continue from the debugger (by typing ‘c’) and the process continues. However, note that pressing C-in the shell may still kill the SSH process, which is bug 162509, so you must sent a signal to the bzr process specifically, for example by typing kill -QUIT PID in another shell. (Martin Pool, #341535)
• bzr add in a tree that has files with \r or \n in the filename will issue a warning and skip over those files. (Robert Collins, #3918)
• bzr dpush now aborts if uncommitted changes (including pending merges) are present in the working tree. The configuration option dpush_strict can be used to set the default for this behavior. (Vincent Ladeuil, #438158)
• bzr merge and bzr remove-tree now requires –force if pending merges are present in the working tree. (Vincent Ladeuil, #426344)
• Clearer message when Bazaar runs out of memory, instead of a MemoryError traceback. (Martin Pool, #109115)
• Don’t give a warning on Windows when failing to import _readdir_pyx as it is never built. (John Arbash Meinel, #430645)
• Don’t restrict the command name used to run the test suite. (Vincent Ladeuil, #419950)
• FTP transports were built differently when the kerberos python module was present leading to obscure failures related to ASCII/BINARY modes. (Vincent Ladeuil, #443041)
• Network streams now decode adjacent records of the same type into a single stream, reducing layering churn. (Robert Collins)
• PreviewTree behaves correctly when get_file_mtime is invoked on an unmodified file. (Aaron Bentley, #251532)
• Registry objects should not use iteritems() when asked to use items(). (Vincent Ladeuil, #430510)
• Weave based repositories couldn’t be cloned when committers were using domains or user ids embedding ‘.sig’. Now they can. (Matthew Fuller, Vincent Ladeuil, #430868)

Improvements

• Revision specifiers can now be given in a more DWIM form, without needing explicit prefixes for specifiers like tags or revision id’s. See bzr help revisionspec for full details. (Matthew Fuller)
• Bazaar gives a warning before exiting, and writes into .bzr.log, if compiled extensions can’t be loaded. This typically indicates a packaging or installation problem. In this case Bazaar will keep running using pure-Python versions, but this may be substantially slower. The warning can be disabled by setting ignore_missing_extensions = True in bazaar.conf. See also <https://answers.launchpad.net/bzr/+faq/703>. (Martin Pool, #406113, #430529)
• Secondary errors that occur during Branch.unlock and Repository.unlock no longer obscure the original error. These methods now use a new decorator, only_raises. This fixes many causes of TooManyConcurrentRequests and similar errors. (Andrew Bennetts, #429747)

Documentation

• Describe the new shell-like test feature. (Vincent Ladeuil)
• Help on hooks no longer says ‘Not deprecated’ for hooks that are currently supported. (Ian Clatworthy, #422415)

API Changes

• bzrlib.user_encoding has been removed; use bzrlib.osutils.get_user_encoding instead. (Martin Pool)
• bzrlib.tests now uses stopTestRun for its TestResult subclasses - the same as python’s unittest module. (Robert Collins)
• diff._get_trees_to_diff has been renamed to diff.get_trees_and_branches_to_diff. It is now a public API, and it returns the old and new branches. (Gary van der Merwe)
• bzrlib.trace.log_error, error and info have been deprecated. (Martin Pool)
• MutableTree.has_changes() does not require a tree parameter anymore. It now defaults to comparing to the basis tree. It now checks for pending merges too. Merger.check_basis has been deprecated and replaced by the corresponding has_changes() calls. Merge.compare_basis, Merger.file_revisions and Merger.ensure_revision_trees have also been deprecated. (Vincent Ladeuil, #440631)
• ProgressTask.note is deprecated. (Martin Pool)

Internals

• Added -Drelock debug flag. It will note a message every time a repository or branch object is unlocked then relocked the same way. (Andrew Bennetts)
• BTreeLeafParser.extract_key has been tweaked slightly to reduce mallocs while parsing the index (approx 3=>1 mallocs per key read). This results in a 10% speedup while reading an index. (John Arbash Meinel)
• The bzrlib.lsprof module has a new class BzrProfiler which makes profiling in some situations like callbacks and generators easier. (Robert Collins)

Testing

• Passing --lsprof-tests -v to bzr selftest will cause lsprof output to be output for every test. Note that this is very verbose! (Robert Collins)
• Setting BZR_TEST_PDB=1 when running selftest will cause a pdb post_mortem to be triggered when a test failure occurs. (Robert Collins)
• Shell-like tests can now be written. Code in bzrlib/tests/script.py , documentation in developers/testing.txt for details. (Vincent Ladeuil)
• Some tests could end up with the same id, that was dormant for a long time. (Vincent Ladeuil, #442980)
• Stop showing the number of tests due to missing features in the test progress bar. (Martin Pool)
• Test parameterisation now does a shallow copy, not a deep copy of the test to be parameterised. This is not expected to break external use of test parameterisation, and is substantially faster. (Robert Collins)
• Tests that try to open a bzr dir on an arbitrary transport will now fail unless they have explicitly permitted the transport via self.permit_url. The standard test factories such as self.get_url will permit the URLs they provide automatically, so only exceptional tests should need to do this. (Robert Collins)
• The break-in test no longer cares about clean shutdown of the child, instead it is happy if the debugger starts up. (Robert Collins)
• The full test suite is expected to pass when the C extensions are not present. (Vincent Ladeuil, #430749)