Looking for a way to get merge directive contents

[Frits Jalvingh]

Is there a bzr command which shows the contents of a merge directive? I
specifically need the log messages contained therein. I looked at the
Bundle Buggy source but it uses bzrlib directly. I would need something
that I can use from Java and which remains stable over bzr versions..

(I hope I do not have to write a plugin; my Python is not exactly
good ;-)

Thanks for your time,

Frits Jalvingh