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I would like to use the session feature for bash source blocks, and receive the error message.

No org-babel-initiate-session function for bash!

A simple code is shown below. The code can be executed through C-cC-c. Yet I received the error message when pressing C-cC-vz.

#+BEGIN_SRC bash :session *bash* echo $0 #+END_SRC #+RESULTS: | | | /bin/bash |

Interestingly, C-c C-v z works for sh source block.

#+BEGIN_SRC sh :session *sh* echo $0 #+END_SRC #+RESULTS: | | | /bin/sh |

I use doom emacs, and the vanilla configuration for both org-mode and org-babel. Anyone knows what the potential issues are.

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  • Wow!! Thanks for asking this question!! I didn't know about C-c C-v z, cool!! Commented Mar 7, 2020 at 2:32

2 Answers 2

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I think you uncovered a bug or something fell through the cracks when ob-shell.el was built.
Please submit bug report to org-mode repo.

Below is a temporary workaround

  1. Execute the missing org-babel-bash-initiate-session function definition below:
(defun org-babel-bash-initiate-session (&optional session _params) "Initiate a session named SESSION according to PARAMS." (when (and session (not (string= session "none"))) (save-window-excursion (or (org-babel-comint-buffer-livep session) (progn (shell session) ;; Needed for Emacs 23 since the marker is initially ;; undefined and the filter functions try to use it without ;; checking. (set-marker comint-last-output-start (point)) (get-buffer (current-buffer)))))))

Note: I just copied org-babel-sh-initiate-session definition from ob-shell.el and changed -sh- to -bash-.

  1. Execute bash SRC again with C-c C-c.

  2. Use C-c C-v z.

Thank you for asking your question!

The answer code was tested using:
emacs version: GNU Emacs 25.2.1 (x86_64-unknown-cygwin, GTK+ Version 3.22.10)
org version: 9.1.2

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As another option, I usually list bash for my "shell script" source blocks, I am simply aliasing the initiate session function from sh:

(defun org-babel-bash-initiate-session (&optional session _params) "Initiate a bash/sh session named SESSION according to PARAMS." (org-babel-sh-initiate-session session _params))
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