lisp syntax is a lot simpler than XML. a basic lisp _interpreter_ would take maybe a night or three in any language, a mere parser much less. but why you don't

lisp syntax is a lot simpler than XML. a basic lisp _interpreter_ would take maybe a night or three in any language, a mere parser much less. but why you don't see many such parsers is a different issue, not closely related to s-exp's themselves