difftools, 'bzr diff --using footool', and 'diffuse'

[Stephen Ward]

Hi Ian,

On the subject of content-filters, I have a few questions.  Feel free to 
direct me to an existing doc (or relevant comment block) if this is already 
covered somewhere.

1. does export apply filters?  what about rev_tree.get_file()?
if so, this should be happening naturally for all but the working tree (and 
will cause spurious diffs if the working tree is not likewise filtered).

2. is there any easy way to tell if content-filters are in use, to decide 
whether to make a temporary copy of the files in the working tree?

3. are the filters available in the bzrlib layer in some reusable way?

I'd hate to give up the ability to modify the working-tree version without 
compelling reason.

Regards,

Steve