Revert implmentation and how to undo a bzr remove

[Benno]

On Mon Apr 11, 2005 at 11:30:50 +1000, Martin Pool wrote:
>On Sun, 2005-04-10 at 06:44 +1000, benjl at cse.unsw.edu.au wrote:
>> 2/ How to revert a remove:
>> 
>> I've got no idea how to do this. It seems that you currently
>> can't:
>> 
>> bzr_test% touch foo                            
>> bzr_test% bzr add foo
>> bzr_test% bzr commit -m "Added foo"
>> bzr_test% bzr status               
>> bzr_test% bzr remove foo
>> bzr_test% bzr status    
>> ?       foo
>> D       foo
>> 
>> Any advice on how this should be implemented?
>
>It needs to put back the file-id that it previously had, by looking it
>up in the basis inventory.  I think that's also what add should do, so
>that you can use it to cancel a remove operation that is not yet
>committed.

Right. The next question is how to get back the old id. And importantly
how to distinguish between the case:

$ bzr remove foo
$ bzr add foo

which should simply revert the "remove", and the case:

$ bzr remove foo
$ bzr commit -m "Removed foo"
$ rm foo
$ touch foo
$ bzr add foo

Where foo is a new file totally different to the orginal foo, so should
have a different UUID. Of course then there is the case of how to actually
revert the commit, as opposed to just reverting a working copy.

In any case, I'm not sure how to get access to the old UUID, expect by stashing
it into a file somewhere.

Cheers,

Benno