I'm really enjoying Gambit 4.0 so far, but there are a few functions that I'm missing:

I can't find a way to block on a set of items (ports, mutexes, whatever) until one becomes available. Does Gambit have an equivalent to Concurrent ML's select (or PLT Scheme's object-wait-multiple)?

Along similar lines, is there an equivalent to char-ready? for non-character ports?

Thanks, - Matt