How does this compare to the 'sexp' library? http://www.artima.com/rubycs/articles/patterns_sexp_dslsP.html http://www.artima.com/rubycs/articles/patterns_sexp

How does this compare to the 'sexp' library? http://www.artima.com/rubycs/articles/patterns_sexp_dslsP.html http://www.artima.com/rubycs/articles/patterns_sexp_dslsP.ht...