On Mon, 29 Aug 2011, John Cowan wrote:

> I am therefore proposing that we add the following language to the end
> of 1.3.2:
>
>        If a syntax form or procedure is specified as returning an
>        undefined value, it is an error to store this value in a
>        location or attempt to output it onto a stream.

I like this, except "stream" is only mentioned in a different context in the
report (the examples of using lazy evaluation for infinite lists).  Maybe use
instead "write it to a port" or something.

Andre

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