Andre van Tonder wrote:
> Just a couple of comments on the fix:
>
> 1) The stream-low-level-lazy, ...strict, ...delay and ...force
>    implementations have a pretty serious bug.  This bug was discovered by
>    Alexandro Forero Cuervo and discussed on the SRFI-45
>    list (with some spillover to the SRFI-40 list).  I posted a
>    fix - please see the patched SRFI-45 document for the details.
>    (also, AFC posted a patched version of SRFI-40 incorporating
>    a version of the fix to this list).
>
> 2) I believe the discussion of stream-unfoldn in the first
>    part of the implementation section was obsoleted by the
>    SRFI-45-style promises (indeed, the actual implementation
>    below it was then changed back to using the naive
>    version, which should be correct and safe for space).

I've checked in changes to address both of these issues.  Please
let me know if any other problems exist with the reference
implementation.

David