bzr revno always an integer?

[Chris Hecker]

Will `bzr revno` always return a simple integer, or can it be nnnn.n.n? 
  In logs with merges and whatnot the other levels can have .'s in them, 
but can the current revision ever look like that?

I know the revno's won't match up between different branches, but on a 
single branch with pushes and pulls and merges it will still 
monotonically increment locally (assuming no update -r or anything), or 
am I misunderstanding?

Hope that makes sense as a question.  Basically, I want to use `bzr 
revno` in a version number, but it needs to be an integer for the build 
process to work right.

Thanks,
Chris