I only want to turn off the warnings for certain source block languages.

I couldn't find an answer to this anywhere, only how to turn off the confirmation requests for all languages:

(setq org-confirm-babel-evaluate nil)

This is a super easy question for someone who knows e-lisp. It should be included with the documentation in my opinion, but there is only one language in the example.

How can I extend this to include more languages?

(defun my-org-confirm-babel-evaluate (lang body)
            (not (string= lang "ditaa")))  ; don't ask for ditaa
          (setq org-confirm-babel-evaluate 'my-org-confirm-babel-evaluate)
  • Disclaimer: I didn't try it: (member* "python" '("ditaa" "python") :test 'string=).
    – wvxvw
    Mar 21, 2016 at 8:28

1 Answer 1


While I personally don't use babel much, going from the example, this should simply be:

(defun my-org-confirm-babel-evaluate (lang body)
  (not (member lang '("C" "clojure" "sh"))))

(setq org-confirm-babel-evaluate 'my-org-confirm-babel-evaluate)

Where C, clojure and sh should be replaced by the languages you don't want the confirmation for.

  • Seems to be working fine, thanks! You need an extra bracket in there after ... "sh")))
    – n1k31t4
    Mar 22, 2016 at 2:55
  • Oops, Thanks! That always seems to happen when I don't have paredit-mode on...
    – ryuslash
    Mar 22, 2016 at 8:15

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