> We *don't care* if the generator *would* have caught the thrown
> GeneratorExit, we only care about ensuring that finally blocks are
> executed (including those implied by with statements). So if there
> aren't any finally clauses or with statements in the block stack, we
> should be able to just let the generator and frame get collected (as
> Anssi suggested), without trying to allow execution to complete.

That's a good point.

I'm also contemplating that the generator close() could be done from the
*frame*'s tp_clear, which would sidestep the issue of collect order
entirely: the finally block doesn't actually need the generator to
execute, it only needs the frame and its locals.