Hey all :) Just a little heads-up that I just landed R7RS support. Thanks to Göran Weinholt for akku-scm (https://gitlab.com/akkuscm/akku-r7rs/) and OKUMURA Yuki for yuni (https://github.com/okuoku/yuni), off of which some of these files were based. (These projects are public domain / CC0).
The library syntax for R7RS is a subset of R6RS, so to use R7RS you just (import (scheme base)) and off you go. As with R6RS also, there are some small lexical incompatibilities regarding hex escapes; see "R7RS Incompatibilities" in the manual. Also there is a --r7rs command-line option. Cheers, Andy
