adding a directory from another bzr repository with full history

[David Garamond]

hi all,

this should be simple, but for some reason i cannot find the way to do
this. i have repo1 and repo2, and in the name of refactoring i want to
move repo2 into repo1/subdir, with full repo2's history added into
repo1's history.

how do i do this in bazaar?

regards,
dave