#+BEGIN_SRC emacs-lisp
(use-package rainbow-mode
+ :delight 🌈
;; add ess to the x major mode
:config (add-to-list 'rainbow-x-colors-major-mode-list 'ESS[S])
(add-to-list 'rainbow-x-colors-major-mode-list 'ESS[R])
:mode ("\\.Rmd" . poly-markdown+r-mode)
)
(use-package polymode
+ :defer t
)
#+END_SRC