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No, I haven't, and I never really planned to be the person
implementing "with".  Doesn't mean I might not end up doing
it eventually, but it's not currently in my plans.  I'm
going to have my hands full just updating PEP 342 (Guido has
asked me to take it over), and getting docs written to go
with this patch.  Between all that and my distutils-related
work, my pro-bono Python project time is booked up solid for
maybe the next 2 months or so.