How to get diff for local revisions and parent revisions?

[Eli Zaretskii]

> Date: Thu, 16 Sep 2010 12:19:59 +0100
> From: Gustavo Narea <gnarea at tech.2degreesnetwork.com>
> 
> Put simply, I need to separate the changes that happened in a branch
> from the changes they depend on with respect to trunk.

Look up `submit:', `ancestor:', and maybe `before:' in the "Revision
Identifiers" section of the Bazaar User Reference.