We use bzr as the version control system at work and we've come to realize that in a certain project, it would be quite handy if each of the revision controlled files had the revision number as a comment on the first line of each file.
In a nutshell I want to add # BZR REV: xxx to each python file during commit.
A quick bash script would achieve this but as I understand this should be standard practice in other version control systems like SVN, so I'm hoping for a builtin way to achieve what I need. Also it would save me the trouble of writing that bash script :)
See the bazaar keywords plugin.