xxxxxx@gmail.com scripsit:

> But why does it want to avoid r7rs record? Providing procedural record
> on srfi 137 is just about the same effort as providing one using r7rs
> record (l mean just use r7rs record as infrastructure, not making the
> procedural record type be r7rs record type).

Well, that is precisely what the portable implementation of SRFI 137 does:
it assumes SRFI-9 (or R7RS-small).

--
John Cowan          http://www.ccil.org/~cowan        xxxxxx@ccil.org
Values of beeta will give rise to dom!
(5th/6th edition 'mv' said this if you tried to rename '.' or
'..' entries; see http://9p.io/who/dmr/odd.html)