Re: Sweeter Emacs Lisp

[Stefan Monnier <monnier@iro.umontreal.ca>]

>  (defmacro cool-cond (&rest clauses)
>    (let ((rev (reverse clauses))
>          one elab)
>      (while (setq one (pop rev))
>        (setq elab (pcase one
>                     (`(let ,var ,exp)
>                      `((t (let ((,var ,exp))
>                             (cond ,@elab)))))
>                     (`(let ,var)
>                      `((t (let (,var)
>                             (cond ,@elab)))))
>                     (_ (cons one elab)))))
>      `(cond ,@elab)))

That sounds about right.  Two remaining problems:
- Easy one: improve the macro to reduce the nesting depth (consecutive
  `let's should be turned into a single let*, and consecutive non-lets
  should be together in a single `cond').  You can probably use
  macroexp-let* and macroexp-if for that.
- Hard one: come up with a better name.


        Stefan