[cjv]

I'm curious to know what people think about elisp as a extension language. Would Emacs be better if everything was implemented in elisp including the core data structures (assuming elisp was very fast)? Do people suffer from lack of static typing?

[b3morales]

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.