Although Scheme has a standard, I wouldn’t really call Guile ‘more modern and standardised’: Guile has no standard (it extends the Scheme standard in incompatib

Although Scheme has a standard, I wouldn’t really call Guile ‘more modern and standardised’: Guile has no standard (it extends the Scheme standard in incompatible ways), and ‘modern’ is hard to define. Emacs Lisp added lexical scope in the past couple of years, probably more recently than Guile added a new language (as opposed to library) feature — is that modern enough? I wouldn’t imagine that the two efforts are compatible, because they are both efforts to rewrite the Emacs Lisp engine in another language, one in Rust & one in Guile Scheme. It’s possible that one might be able to call over to the other, through its CFFI. I’d like to see Emacs rewritten in Common Lisp, and so I’d prefer a Rust engine to a Guile engine: Rust is a static language, and a Rust engine is unlikely to lead to Rust-extensible Emacs code, while a Guile engine is likelier to lead to Guile-extensible Emacs code, which is completely the wrong direction IMHO.