There's no reason you shouldn't expect be able to call repos_replay on the root of r0, right?
As of now if send_deltas is true it tries to create a root for r-1, which predictably fails. I think we can just hardcode it to call set_target_revision(0) and then return. --dave -- glas...@davidglasser.net | langtonlabs.org | flickr.com/photos/glasser/