Andy Wingo <wi...@pobox.com> writes:
> On Thu 23 Jun 2016 18:57, Mark H Weaver <m...@netris.org> writes:
>
>> Andy Wingo <wi...@pobox.com> writes:
>>> Or, we could use print states. But print states are not so great and
>>> ideally we would remove them eventually.
>>
>> We will need print states, or something like them, to support writing
>> cyclic data structures as required by R7RS.
>
> I was thinking parameters would be sufficient. Dunno. WDYT about that?
Parameters would propagate to places where we don't want them to
propagate. For example, if in the course of running a custom printer,
some internal procedure prints something to a different port, e.g. to a
string port, then the parameter would still take effect.
Mark
