RE: [babel] evaluating shell commands for side effect

["Sullivan, Gregory (US SSA)" <gregory.sullivan@baesystems.com>]

I meant "whenever I want to _export_ the code" (C-c C-e h).

-- Greg

--
Greg Sullivan,   gregory.sullivan@baesystems.com
(781)262-4553 (desk),  (978)430-3461 (cell)


-----Original Message-----
From: Sullivan, Gregory (US SSA) 
Sent: Friday, August 20, 2010 7:37 PM
To: Sullivan, Gregory (US SSA); emacs-orgmode@gnu.org
Subject: RE: [babel] evaluating shell commands for side effect

Another question related to using babel, shell commands, in a session:

When I try to export a .org file with "begin_src sh :session *shell* :exports code" blocks, I'm prompted whether I want to evaluate the code.  However, I thought ":exports code" would avoid evaluation on export (and that :session is only about evaluation).

Any help appreciated.
Thanks.

-- Greg

--
Greg Sullivan,   gregory.sullivan@baesystems.com
(781)262-4553 (desk),  (978)430-3461 (cell)


-----Original Message-----
From: emacs-orgmode-bounces+gregory.sullivan=baesystems.com@gnu.org [mailto:emacs-orgmode-bounces+gregory.sullivan=baesystems.com@gnu.org] On Behalf Of Sullivan, Gregory (US SSA)
Sent: Thursday, August 19, 2010 12:51 PM
To: emacs-orgmode@gnu.org
Subject: [Orgmode] [babel] evaluating shell commands for side effect

I'm writing "how to" documents that include sequences of shell commands, such as: 

#+begin_src sh :session *shell*
 cd /home/sullivan/myproj/src
 ./configure --prefix /home/sullivan/myproj/install
 make
 make test
#+end_src

and simply want C-c C-c to send the lines, one at a time, to the inferior shell process. That is, I want readers to read along, and then execute the code as needed.

Currently, it never returns (until C-g).  It might be related to the issues discussed last November, 
	http://lists.gnu.org/archive/html/emacs-orgmode/2009-11/msg01166.html
I have the latest git version of org mode, and I think I've set comint-prompt-regexp correctly.

So: I don't want to filter the output, I don't want to collect the results - just send the commands and go.

Looking at ob-sh.el/org-babel-sh-evaluate, I can't figure out what the Right Thing to do is.  Appended is a cheap hack that checks for "ignore" as a results string (e.g. #+begin_src sh :session *shell* :results ignore) and sends the lines one at a time to the inferior shell buffer.  But I suspect there's a more straightforward way to do it.

Thoughts?
Thanks.

-- Greg

--
Greg Sullivan,   gregory.sullivan@baesystems.com
(781)262-4553 (desk),  (978)430-3461 (cell)

--

(defun org-babel-sh-evaluate (session body &optional result-params)
  "Pass BODY to the Shell process in BUFFER.
If RESULT-TYPE equals 'output then return a list of the outputs
of the statements in BODY, if RESULT-TYPE equals 'value then
return the value of the last statement in BODY."
  ((lambda (results)
     (if (or (member "scalar" result-params)
	     (member "ignore" result-params)
	     (member "output" result-params))
	 results
       (let ((tmp-file (make-temp-file "org-babel-sh")))
	 (with-temp-file tmp-file (insert results))
	 (org-babel-import-elisp-from-file tmp-file))))
   (if (not session)
       (org-babel-eval org-babel-sh-command (org-babel-trim body))
     (if (member "ignore" result-params)
	 (progn
	   (save-excursion
	     (set-buffer session)
	     (mapc
	      (lambda (line)
		(insert line) (comint-send-input nil t) (sleep-for 0.25))
	      (split-string (org-babel-trim body) "\n")))
	   '())

     (let ((tmp-file (make-temp-file "org-babel-sh")))
       (mapconcat
	#'org-babel-sh-strip-weird-long-prompt
	(mapcar
	 #'org-babel-trim
	 (butlast
	  (org-babel-comint-with-output
	      (session org-babel-sh-eoe-output t body)
	    (mapc
	     (lambda (line)
	       (insert line) (comint-send-input nil t) (sleep-for 0.25))
	     (append
	      (split-string (org-babel-trim body) "\n")
	      (list org-babel-sh-eoe-indicator))))
	  2)) "\n")))))
)

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