I need to choose a Scheme standard for an academic compiler implementation. It has to be simple enough, but should still be a powerful language. There are several (RRS–R7RS) standards of Scheme. Is there a public comparison of these reports for choosing? If no, which one would you recommend for a first compiler?
You can use the "Language changes" sections in the standard documents themselves to compare them. Here are links to these sections in public HTML versions: