Re: [babel] #+call: result names?

From: "Eric Schulte" <schulte.eric@gmail.com>
To: Taru Karttunen <taruti@taruti.net>
Cc: emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: [babel] #+call: result names?
Date: Mon, 15 Feb 2010 09:12:36 -0700	[thread overview]
Message-ID: <87vddymqa3.fsf@gmail.com> (raw)
In-Reply-To: <1266232415-sup-4306@oz.taruti.net> (Taru Karttunen's message of "Mon, 15 Feb 2010 13:16:59 +0200")

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Hi Taru,

Thanks for pointing this out.

I'm not sure what the cleanest way would be to refer to these results.
I find that in these situations if I were to try to refer the results of
a call line like

#+call: foo(x="bar")

with something like

#+begin_src emacs-lisp :var foobar=foo(x="bar")
  (message "foo of bar is %S" foobar)
#+end_src

Org-babel will end up re-running the foo function passing "bar" as an
argument.  This is generally fine with me as it will return the same
value as referencing the results of the #+call line.

The easiest solution would be to simply un-name all #+call results.
This tiny patch does this


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diff --git a/contrib/babel/lisp/org-babel.el b/contrib/babel/lisp/org-babel.el
index 01b730d..4e3e70c 100644
--- a/contrib/babel/lisp/org-babel.el
+++ b/contrib/babel/lisp/org-babel.el
@@ -628,7 +628,7 @@ following the source block."
   (save-excursion
     (let* ((on-lob-line (progn (beginning-of-line 1)
 			       (looking-at org-babel-lob-one-liner-regexp)))
-	   (name (if on-lob-line (first (org-babel-lob-get-info))
+	   (name (unless on-lob-line
 		   (fifth (or info (org-babel-get-src-block-info)))))
 	   (head (unless on-lob-line (org-babel-where-is-src-block-head))) end)
       (when head (goto-char head))

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However the cleanest solution to me seems to be adding a header
argument, maybe named :resname which could be used to control the name
of the results, then passing an empty :resname argument could result in
the following

#+call: foo(x="bar") :resname

#+results:
...

and supplying a value would allow specific naming

#+call: foo(x="bar") :resname eric

#+results: eric
...

Does that sound like a good solution?  Is anyone using results names in
another way which this would not address?

Thanks -- Eric

Taru Karttunen <taruti@taruti.net> writes:

> Hello
>
> I have code like
>
> #+call: foo(x="bar")
>
> that produces
>
> #+results: foo(x="bar")
> ...
>
> Referring to the results with such a name elsewhere does not seem to
> work and is tedious. Is there a way to to rename the results?
>
> i.e.
> #+call: foo(x="bar") as foobar
> producing
> #+results: foobar
>
> - Taru Karttunen
>
>
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Please use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode

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