[BUG] Diff on revision range for branch in repository without working trees is not possible

[Nicholas Allen]

Nicholas Allen wrote:
>
>> # Compare two files in the same tree
>> $ bzr diff file1 file2
This is not what the help says:

...
Show differences in the working tree or between revisions.

If files are listed, only the changes in those files are listed.
Otherwise, all changes for the tree are listed.


It seems that this is how it behaves too. So I don't think bzr would 
need to support

bzr diff branch1 branch2

to show the differences between the 2 branches either.

Nick