TODO

NOTE: To change the version number, modify configure.ac and then
follow the instructions there.

TODOs:

- Get at least one editor mode implemented, e.g., in emacs.
  Making it work with Paredit would be especially nice.

- Get this working in ACL2.
  In theory, you could modify "~/acl2-init.lsp" to include:
    (require "asdf")
    (asdf:load-system :readable)
    (readable:enable-sweet) ; or (readable:enable-curly-infix)
  or alternatively from its command prompt:
    :q
    (require "asdf")
    (asdf:load-system :readable)
    (readable:enable-sweet) ; or (readable:enable-curly-infix)
    (lp)

  Unfortunately this doesn't work.  These are accepted easily enough,
  but the modified "read" is ignored by ACL2's REPL loop.
  The problem seems to be in function "read-object" in file "axioms.lisp".

  An example that *should* work would be the Lisp:
    (thm (equal (+ a b c) (+ c b a)))
  Which could then be the curly-infix:
    {thm equal{{a + b + c} {c + b + a}}}
  Or the sweet-expression:
    thm $ equal {a + b + c} {c + b + a}

  You could also use the http://tryacl2.org/ example:
    (thm (equal (append (append xs ys) zs)
                (append xs (append ys zs))))
  With curly-expressions this could be:
    {thm equal(append(append(xs ys) zs)
               append(xs append(ys zs)))}
  In sweet-expressions this could be:
    thm
      equal
        append append(xs ys) zs
        append xs append(ys zs)
  Or alternatively:
    thm $ equal
      append append(xs ys) zs
      append xs append(ys zs)