Effectiveness of folder filtering

[Dave Abrahams]

I just found the following in my offlineimap output:

  BoostProRemoteReadOnly:INBOX -> BoostProLocal

What's baffling about this is that the BoostProRemoteReadOnly
repository had the following settings:

  folderincludes = ['[Gmail]/All Mail']
  idlefolders = %(folderincludes)s
  folderfilter = lambda foldername: False

Which, as far as I can tell, *ought* to prevent it from syncing INBOX
from there.  Am I missing something about how this is supposed to work?

Thanks,
            
-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com