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I have integrated this patch into the latest Python CVS tree,
with a few additional modifications.

* added spaces into the documentation patch & verified that
  doc building works;

* fixed problem where the 'unconsumed_tail' attribute returned
  was *actually* the unused_data attribute; this was caused by
  indiscriminate cutting & pasting ;).

* put in a few additional comments and fixed the code for 80  
  cols.

It doesn't look like I can submit an attachment with this
comment (?); I will e-mail it to both loewis & htrd.