Emacs as an inferior-lisp-program
Emacs has this inferior-lisp mode where you can send lisp forms to a running lisp image. This can either be a common-lisp (although Slime is more specialized at that), or a scheme, or as it turns out, it can be emacs itself.
Put these two files in a directory some place:
ee.sh
ee.el
Then, simply tell emacs to make [...]