It's a tough problem. Steve Yegge blogged about the complexities involved when he wrote js2-mode: https://steve-yegge.blogspot.com/2008/03/js2-mode-new-javascr

It's a tough problem. Steve Yegge blogged about the complexities involved when he wrote js2-mode: https://steve-yegge.blogspot.com/2008/03/js2-mode-new-javascript-mode-for-emacs.html https://steve-yegge.blogspot.com/2008/03/js2-mode-new-javasc... I guess comp. sci. people studying languages have been more interested in syntactically valid programs than the opposite.