I have org :jupyter in my Doom Emacs init.el, i.e., ob-jupyter, for using Jupyter with org-babel, and there's a really annoying behavior when I'm in an org file, editing a source block that begins with #+BEGIN_SRC jupyter-python :session py. Every time I enter the block by pressing o ("open" a new line for entering text, the Evil command) it disables editing in the source block, saying that the code block is actually being handled by a dedicated buffer ("Not in a sub editing buffer"). It doesn't open a window for the sub-editing buffer, so I have to go hunting for it in my buffer list, and then abort the process with C-c C-k, which is a pain.

The thing is, I never want to edit code blocks in a sub-editing buffer. How can I disable that?

  • 1
    This (mis)behavior seems to be specific to Doom, so maybe report it to them? Even if you are happy with your answer (which is a bit radical in my view), others might benefit from a fix.
    – NickD
    Oct 9, 2022 at 0:10
  • I use vanilla emacs but this affects me too with my setup. I had yet to investigate what the culprit is tho.
    – ed9w2in6
    Aug 3, 2023 at 8:53
  • I do not remember seeing this issue before upgrading to emacs29 tho. So likely some changes in emacs that made emacs-jupyter not working well with it.
    – ed9w2in6
    Aug 3, 2023 at 11:03

2 Answers 2


Figured it out myself. I couldn't find an option for this, but doing this seems to work, so far:

;; Disable editing source code in dedicated buffer
(defun org-edit-src-code nil)

I faced the same issue in 2023 with emacs29 and for me my workaround now is to disable electric-indent-mode and to manually indent. Which I believe is better than to removing org-edit-src-code altogether.

I have also filed this issue: https://github.com/emacs-jupyter/jupyter/issues/488

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