...this does not mean that some of us should not want, in a rather dispassionate sort of way, to put a bullet through csh's head. - Larry Wall

Even if you aren't in doubt, consider the mental welfare of the person who has to maintain the code after you, and who will probably put parens in the wrong place.

That being said, I think we should immediately deprecate any string concatenation that combines '19' with '99'.

Is LISP a candidate for a scripting language? While you can certainly write things rapidly in it, I cannot in good conscience call LISP a scripting language. By policy, LISP has never really catered to mere mortals... And, of course, mere mortals have never really forgiven LISP for not catering to them.