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[O] Problem with J Source Code Blocks in Org Mode

From: Bill Harris
Subject: [O] Problem with J Source Code Blocks in Org Mode
Date: Sun, 10 Dec 2017 16:08:19 -0800

I recently tried to set up J as described in http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-J.html, starting by loading j-mode from stable melpa, but I get an org-babel error output when I try to execute a J source code block: "/bin/bash: jconsole: command not found".

That makes it sound as if orgmode requires something besides setting j-console-cmd, which I had done:

 -console-cmd is a variable defined in ‘j-console.el’.
Its value is "ijconsole"
Original value was "jconsole"

Name of the executable used for the J REPL session

You can customize this variable.

Looking at ob-J.el, I see

(defcustom org-babel-J-command "jconsole"
  "Command to call J."
  :group 'org-babel
  :version "26.1"
  :package-version '(Org . "9.0")
  :type 'string)


(defun org-babel-J-eval-string (str)
  "Sends STR to the `j-console-cmd' session and executes it."
  (let ((session (j-console-ensure-session)))
    (with-current-buffer (process-buffer session)
      (goto-char (point-max))
      (insert (format "\n%s\n" str))
      (let ((beg (point)))
(sit-for .1)
beg (point-max))))))




PS: I'm running Emacs v25.1.1 and org mode 9.1.3.  There's a bit more info at http://jsoftware.com/pipermail/general/2017-December/037363.html.
Bill Harris               

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