Comment 3 for bug 710767

If you autodetect bazaar.launchpad.net/+branch/ URLs, you should bear in mind that they can have five forms:

+branch/bzr <--- a project's development focus branch
+branch/bzr/2.3 <--- a project's non-focus series branch
+branch/ubuntu/base-files <--- a source package within the current development series of a distro
+branch/debian/sid/base-files <--- a source package within a named series of a distro
+branch/ubuntu/lucid-updates/base-files <--- a source package within a named non-release pocket of a distro

In each of these cases, a smart enough "where to push back" guesser would guess:

~user/bzr/foobar # Replace +branch with ~user
~user/bzr/foobar # Replace +branch with ~user, chop series id
~user/ubuntu/natty/base-files/foobar # Replace +branch with ~user, insert name of current dev distro series, or placeholder
~user/debian/sid/base-files/foobar # Replace +branch with ~user
~user/ubuntu/lucid/base-files/foobar # Replace +branch with ~user, chop "-pocket" suffix from series id