Comment 2 for bug 173061

I found the message confusing too.

First of all, it's not even an error, it's a "there's nothing to be done" message. I think calling this an error makes about as much sense as say "ERROR: Tree is up to date" when running "bzr up".

Also, the "Bazaar-NG" name isn't used anywhere else now ("bzr --version" calls itself "Bazaar")... and I'm really not sure what the noun clause "branch format Bazaar-NG meta directory" means anyways. :-)

I was expecting something more like (for "bzr upgrade" without arguments): "The branch storage format is already at the default version (pack-0.92).". Maybe with a hint to use the --format argument if one wants to upgrade to something more recent than what the default format is. And in the case of brz upgrade --format=foo (when the repository is already using format foo): "Branch storage is already using format foo."