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lisp/langs/org-babel-ruby.el

@@ -104,11 +104,12 @@ Emacs-lisp table, otherwise return the results as a string."
 (defun org-babel-ruby-initiate-session (&optional session)
   "If there is not a current inferior-process-buffer in SESSION
 then create.  Return the initialized session."
-  (let ((session-buffer (save-window-excursion (run-ruby nil session) (current-buffer))))
-    (if (org-babel-comint-buffer-livep session-buffer)
-        session-buffer
-      (sit-for .5)
-      (org-babel-ruby-initiate-session session))))
+  (unless (string= session "none")
+    (let ((session-buffer (save-window-excursion (run-ruby nil session) (current-buffer))))
+      (if (org-babel-comint-buffer-livep session-buffer)
+          session-buffer
+        (sit-for .5)
+        (org-babel-ruby-initiate-session session)))))
 
 (defvar org-babel-ruby-last-value-eval "_"
   "When evaluated by Ruby this returns the return value of the last statement.")
@@ -124,7 +125,8 @@ last statement in BODY."
                                (list body org-babel-ruby-last-value-eval org-babel-ruby-eoe-indicator) "\n"))
          (raw (org-babel-comint-with-output buffer org-babel-ruby-eoe-indicator t
                 (insert full-body) (comint-send-input nil t)))
-         (results (cdr (member org-babel-ruby-eoe-indicator
+         (results 
+          (cdr (member org-babel-ruby-eoe-indicator
                                (reverse (mapcar #'org-babel-ruby-read-string
                                                 (mapcar #'org-babel-trim raw)))))))
     (case result-type

lisp/org-babel.el

@@ -49,7 +49,7 @@ then run `org-babel-pop-to-session'."
 
 (add-hook 'org-metadown-hook 'org-babel-pop-to-session-maybe)
 
-(defvar org-babel-default-header-args '()
+(defvar org-babel-default-header-args '((:session . "none"))
   "Default arguments to use when evaluating a source block.")
 
 (defvar org-babel-default-inline-header-args '((:results . "silent") (:exports . "results"))

org-babel.org

@@ -497,7 +497,7 @@ tabel
 
 Another example is in the [[*operations%20in%20on%20tables][grades example]].
 
-** PROPOSED add =:none= session argument (for purely functional execution)
+** PROPOSED add =:none= session argument (for purely functional execution) [0/4]
 This would allow source blocks to be run in their own new process
 
 - These blocks could then also be run in the background (since we can
@@ -519,6 +519,17 @@ Down-sides to sessions
 - can't run in background
 - litter emacs with session buffers
 
+*** TODO ruby
+
+#+srcname: ruby-task-no-session
+#+begin_src ruby :session none
+puts :schulte
+[1, 2, 3]
+#+end_src
+
+*** TODO R
+*** TODO python
+*** TODO sh
 ** PROPOSED Are we happy with current behaviour regarding vector/scalar output?
 This simple example of multilingual chaining produces vector output if
 there are spaces in the message and scalar otherwise.