First of all, you have to tell bzr your name and e-mail address.
This will be used on log messages and code histories to identify your
bzr whoami 'Your Name <firstname.lastname@example.org>'
You only need to do this once - bzr will remember it.
bzr branch http://mat.sourceforge.net/release/coruscant
bzr branch mat-coruscant mat-devel
bzr pull --remember URL
where URL is another developer's branch.
This will: (1) get coruscant, (2) make a devel branch for you and (4)
update the devel branch to the given URL.
Please use this procedure rather than directly branching off a
developer's branch. For one thing, it'll be a lot faster, because
SourceForge has a bigger pipe.
You might branch off a developer that's closer to you institutionally, by language, interest or time-zone.
If a developer is working on a major feature, they may invite
others to take a look (or even collaborate); see discussion of the
feature on the mailing list or ask the developer in question.
If you want to base your development on coruscant (eg for an application, rather than MatPLC development per se), simply skip the last step (bzr pull) in the above description and just start using your mat-devel branch.
A company or other group may also have internal branches, only
publishing features back to the MatPLC project at the end (or not). bzr
allows for such internal development, including merging new versions of
the MatPLC into the internal development and, if desired, the orderly
merging back into the main line MatPLC development (even if some time
bzr merge [OTHER]
A "pull" is simpler, but only works if you haven't made any changes
(or if they've been already merged on the other end). This means that
either it will work completely or not at all - you can never get a
conflict from a simple "pull".
If you have made changes, you have to use "merge", fix up conflicts
(if any) and then commit.
OTHER is the URL of another branch; if omitted, it defaults
to the URL used with --remember or the original bzr
branch. It can also be the filename of a "bundle" file (see
"publishing your changes", below, for how to create such files).
bzr branch SRC DEST
Here, SRC and DEST will both be local directory names; often SRC will be your main branch and DEST will be the name of the feature you're working on. This gives you a new branch where you can work on the new feature. If others want to help you with that change, you can let them branch off the new branch.
Just like cvs:
There are two methods, one for occasional use and one for regular
This creates a file called FEATURE.bundle, which you
e-mail to someone; URL should be either that person's
repository or one
of the public ones. (If you receive a bundle like this, you can do a "bzr
pull" or "bzr merge" on it, as though it were a
For internal development, you might publish your changes on an
intranet instead, accessible only to your colleagues, for instance on a
shared disk. You would only
publish a branch on the web if/when you want to contribute a particular
feature back to the MatPLC project.
Further bzr documentation