It's at http://www.ccil.org/~cowan/temp/srfi-117.html (please post to
the SRFI site).

I've added an optional argument to fold and fold-right, the queue to use.
I've also gotten rid of clear, which is redundant with remove-all.
I have not yet updated the implementation, but the text is ready to
finalize.

--
John Cowan          http://www.ccil.org/~cowan        xxxxxx@ccil.org
One of the oil men in heaven started a rumor of a gusher down in hell.  All
the other oil men left in a hurry for hell.  As he gets to thinking about
the rumor he had started he says to himself there might be something in
it after all.  So he leaves for hell in a hurry.    --Carl Sandburg