bzr cat --name-from revision doesn't seem to do anything

[John Arbash Meinel]

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On 2/8/2011 7:50 PM, Andrew King wrote:
>  bzr init .
>  touch foo
>  bzr add foo
>  bzr commit -m "added foo" foo
>  bzr mv foo bar
>  bzr commit
>  bzr cat -r1 bar
>     no error (finds foo has become bar)
>  bzr cat -r1 foo
>     no error
>  bzr cat -r1 foo --name-from-revision
>     no error
> bzr cat -r1 bar --name-from-revision
>     bzr: ERROR: u'bar' is not present in revision
> 
> I don't understand what the point of --name from revision.
> 
> bzr cat finds that foo has become bar anyway, so --name-from-revision
> just seems to make it less likely that you find what you are looking for?
> 
> I am looking at this in order to try and address the merge comments
> on https://code.launchpad.net/~eurokang/bzr/537442-annotate-removed/+merge/48906 by
> consolidating the way files are looked up by name and revision
> information, but it seems cat's way doesn't make that much sense!
> 
> Cheers,
> Andrew

I'm guessing the flag was added to force looking in the revision before
the working tree. For the case of:

 bzr init .
 echo original foo > foo
 bzr add
 bzr commit -m "added foo"
 bzr mv foo bar
 echo new foo > foo
 bzr add
 bzr commit -m "new foo"

 bzr cat foo
 bzr cat -r1 foo
 bzr cat -r1 foo --name-from-revision

John
=:->

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