[r6rs-discuss] Proposed features for small Scheme, part 1: a stake in the ground

[Vitaly Magerya]

Aaron W. Hsu wrote:
>>         [SRFI 39] parameterize
>
> Parameters are nice, but also easily implemented. I don't see a reason to
> put them in the base.

Unfortunately they're not. The reference implementation breaks under
any Scheme that has concurrency. Additionally, supporting SRFI-39 means
that `current-input-port' and `current-output-port' are also parameter
objects; you won't have that by simply using reference implementation.