REPL function

[wickedjargon]

this function might satisfy the goal of a REPL feature. Did you want me to send a pull request?

(defun run-v ()
  "Run an interactive REPL session for the V programming language."
  (interactive)
  (let ((buffer (get-buffer-create "*V-REPL*")))
    (unless (comint-check-proc buffer)
      (with-current-buffer buffer
        (comint-mode)
        (make-comint-in-buffer "V-REPL" buffer "v" nil "repl")))
    (pop-to-buffer buffer)))