> When it is a library on top of a standard Scheme, so far I only worked
> with an emulation of the ambiant coop. If the user capture a
> continuation outside a flow, then I did not plan what can happen.

> I started to implement a Scheme that targets a micro subset of Scheme
> where I re-implement call/cc with a trampoline plus CPS transformation.
> The goal is to benchmark that against Chez's call/cc. Eventually try to
> benchmark a program to be able to tell whether trampoline CPS
> transformation is fast enough (and look at memory usage).

Feeley made some remarks a few days back about emulating threads using
only standard Scheme; might be useful to compare notes.