'tidy' question

[John S. J. Anderson]

  I'd like to define a 'tidy' action that will clean up /tmp on our
  machines. However, I need to exclude files owned by root from this
  tidy action. It seems like the way to do this is to use a filter,
  but I can't seem to find the filter syntax to say "all users save
  this one". 

  Is a filter the right approach? If so, what would that filter look
  like? 

thanks,
john.
-- 
John S J Anderson, Ph.D.         [ Contractor ]     +1.301.402.7499
Chief Penguin Herder & Linux Team Lead, Systems Group, NCBI/NLM/NIH
That's the difference between me and the rest of the world! Happiness isn't
good enough for me! I demand euphoria!  -- Calvin