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The attached patch includes both a documentation patch, as
well as a modified loop patch to explicitly match the
documentation.

The patches are concatenated and in standard context diff
format (as per the Python patch submission guidelines, sorry
about the previous unified diff).  The test suite does not
seem to contain tests for asyncore.  It does contain a test
for asynchat, which will be unaffected by this patch.

One thing to note: the use of 'count = count - 1' rather
than 'count -= 1' is to remove potential bugs in the case
where a mutable number-like object with a modifying __isub__
method were to be passed by a user.