feeley

    > (define (f x) (/ 1 (* x x)))
    > (f 5)
    > (f "hello") ;; the * procedure will raise an exception and highlight "(* x x)"

  $ cat hello.scm
  (display "hello!\n")
  $ gsc hello.scm
  $ gsi hello.o1
  hello!
  $ ls -l hello.o1   # this is generated by gcc
  -rwxrwxr-x 1 feeley feeley 18152 Mar 13 17:16 hello.o1
  $ rm hello.o1
  $ gsc -cc "tcc -shared" hello.scm
  $ gsi hello.o1
  hello!
  $ ls -l hello.o1   # this is generated by tcc
  -rwxrwxr-x 1 feeley feeley 4432 Mar 13 17:17 hello.o1

  > (module-whitelist-add! '(github.com/feeley))
  > (import (github.com/feeley/roman demo))

    printf \\$((byte/64))$((byte/8%8))$((byte%8))

    set `sed q | od -v -A n -t u1`

    n=10000000; while [ $n -gt 0 ]; do n=$((n-1)); done

    eval a$i=0