Comment 6 for bug 1030347

$ git clone https://github.com/kevinmehall/pithos.git
$ cd pithos
$ bzr diff -c6
$ bzr diff -c7
$ bzr diff -c8

6 has a file added and a file modified at the top level.
7 has 2 files modified at the top level.
8 is a merge.

$ bzr diff -c9
...

You will see a lot of diff information.

$ bzr diff -c9 | grep setup.py

You will not see diff information for setup.py, which was a file modification at the top level.