[rfc] Allow action parameter to smart_add to return a file_id

[Martin Pool]

On 19 Jul 2006, John Arbash Meinel <john at arbash-meinel.com> wrote:
> I have a use case of wanting to be able to create a new tree with the
> same file ids as another tree (or subset of the other tree). I used to
> do this with a custom Action object, which would grab the file id when
> it went to add the entry to the inventory.

I think that could be reasonable to have built in, as say 'bzr add
--file-ids-from OTHER_TREE'

-- 
Martin