First of all, various members of the Lisp family are used for major developments. Secondly, rewriting Emacs would be a major undertaking and which modern langu

First of all, various members of the Lisp family are used for major developments. Secondly, rewriting Emacs would be a major undertaking and which modern language would it be? My choice would be Common Lisp, for other developers it would be Clojure, Haskell, Python, Ruby, etc. Whatever choice it would be, you'd lose developers who would rather see Emacs rewritten in one of the other languages. Even worse they might spawn forks in their own favourite languages.