Commit by delta is broken with trees updated by join

This looks like a bug in the join operation, rather than in commit. As join still isn't fully supported its not on my critical path for helping get 2.0 out the door. Unassigning from me to make clear I'm not working on it.

Definatly reproducible.

You cannot join anything in a branch which has no history and hence has no root_id?

Shouldn't join generate a new root_id for the containing branch?

Note in the bzr st is says "/ => a/" which is clearly not the intention.

Workaround is $ bzr ci -m "Starting join" --unchanged to get yourselv revision 1.

$ bzr init no-history
$ cd no-history/
$ bzr branch ../a
Branched 1 revision(s).
$ bzr join a
$ bzr st
working tree is out of date, run 'bzr update'
renamed:
  / => a/
unknown:
  a/.bzr.retired.0/
$ bzr update
bzr: ERROR: branch has no revision null:
bzr update --revision only works for a revision in the branch history
$ bzr revno
0
$ bzr ci -m "????"
Committing to: /tmp/tada/no-history/
renamed => a
bzr: ERROR: An inconsistent delta was supplied involving 'aa', 'a-20100503130914-4twyn7in4cdd742n-1'
reason: working tree does not contain new entry

Related bug #308562 same case. Should be duplicate?

Dmitrijs, you're running into bug 308562, but that's different from this one.