>>7 Well, that was 3 years ago. I think Guile 3 is r7rs compliant now- at least you can do:
>(import (scheme base))
>(features)
$1=(... r5rs r6rs r7rs ....)but to be fair to Andy, I have seen plenty of people on the mailing list saying they needed features from 1.8 for, say Lilypond, and I believe it has debugging features the versions after it don't have.