comment line or region

init.el

;; (setq comment-style 'extra-line)


(add-hook 'c-mode-hook
                  (lambda ()
                        (set (make-local-variable 'rebox-style-loop) '(241 243 111))
                        (rebox-mode 1)))
(add-hook 'c++-mode-hook
                  (lambda ()
                        (set (make-local-variable 'rebox-style-loop) '(21 23 111))
                        (rebox-mode 1)))


;; FIXME: comment-dwim-2 doesn't work well with multiple line when comment-style is set to extra-line
;; So this function use comment-dwim-2 for single line, and rebox2 for multiple lines, with comment-tyle disabled
(bind-key* "M-;" 'comment-dwim-2)