[Spambayes] Eliminating duplicates from mbox file

[Skip Montanaro]

    >> 2. Why did I have to subclass mailbox.PortableUnixMailbox?

    Tim> You shouldn't have to...

*sigh*

I come before the bar asking humbly for forgiveness...  I was doing all this
from my ~/tmp directory, which, lo and behold, had a version of mailbox.py
dating from September 2001.  The _Mailbox class had next() but not
__iter__.  Who knows what other semantic differences existed.

Sorry for the wasted bandwidth.

Skip