ometa A <: Parser {
  paras = para*,
  para = `aa -> alert("a2"),
  A = 'a' -> {alert("An a"); "a"}, /*comment*/
  B = 'b' -> {alert("A b"); "b"}, // comment
  C = /*comment*/ 'c',
  space = ' ' -> '',
  letter = ( A | B | C | space ),
  letters = letter+:xs  -> { var cs = xs.join(''); alert("Read letters: " + cs); cs}
          | 'z' -> alert("A z"),
  toplevel = letters* end
}

A.matchAll("a b cza", "toplevel")


var fred = function(){ alert(typeof this ) }

fred(1,2)
fred.call(function(){} ,2,3,4,5)
fred.apply( this, [1,2,3])