Elisp is nowhere near perfect, but it's fast enough in general. I recently wrote an indent function for a private DSL; it looks like a big slow mess, but when I

Elisp is nowhere near perfect, but it's fast enough in general. I recently wrote an indent function for a private DSL; it looks like a big slow mess, but when I run it on a code file, it does its job with no noticeable lag. You can write slow code in any language, of course.