[RFC] Branches that fix bugs

[Jonathan Lange]

The Launchpad developer discussion list recently started talking about
how we link our Bazaar version control data to bugs.

Right now, we have two or three ways of linking branches & revisions
to bugs, none of which are used all the time. In particular, not many
people are huge fans of the --fixes option, since it seems to require
you to enter the bug fixing information at the wrong time.

In the discussion, this list of desirable traits came up, and I
thought it would make a good starting point for a discussion on the
Bazaar list:

 - I want to be able to link a branch to a bug offline
 - I want to be able to say "this branch is intended to fix this bug"
on branch creation
 - I'd like to change my mind about bug branch links
 - I'd like to distinguish between 'working on this bug' and 'fixes this bug'
 - I'd like to say that a bug was fixed pretty much independently of
when I commit.
 - On mainline branches, I would like to know which revision introduced the fix.
 - I want to see as much of this data as possible through the bzr
command line (again offline), ideally as part of bzr log.

Are these clear? Would you change or remove any of these? Is there
anything you would add?

jml