如何在emacs中添加缩进方案（REPL）？

Question

I'm using Chicken-scheme.I use Mx run-scheme to start a scheme repl, and then I use things like Cc Cl to test my work.

However, this is an indentation nightmare. Things generally look like this:

> (+ 1 
(* 2
3)
4)

instead of the desired:

> (+ 1
     (* 2
        3)
     4)

How can I easily fix this? I know I can start a chicken repl with geiser, but that breaks keybindings and I'd really just prefer to not make stuff more complicated than it is. I just want it to correctly indent when I press enter, just like in my non-repl buffer, that's all.

I'd just like the simplest possible solution to get some nice indentation, like is standard for lisp. I'd like to add that my buffer in which I edit the file is totally fine, it's just the repl that doesn't work.

Answer 1

Bind RET to

(defun comint-send-input-indent ()
  (interactive)
  (let ((parens (or (car (syntax-ppss)) 0)))
    (if (zerop parens)
        (comint-send-input)
      (newline-and-indent))))

As found here