On Tue, May 16, 2017 at 6:14 PM, John Cowan <xxxxxx@ccil.org> wrote:

The best approach seems to be to check for a negative count before calling the R6RS routine and add (- end start) to it. 

This approach causes 200 to pass but 202 to fail in IronScheme.  I'm not sure why at this point.

-- 
John Cowan          http://vrici.lojban.org/~cowan        xxxxxx@ccil.org
Ambassador Trentino: I've said enough. I'm a man of few words.
Rufus T. Firefly: I'm a man of one word: scram!    --Duck Soup