* odd behavior for begin_src org :results
@ 2013-05-01 19:08 Greg Minshall
2013-05-01 20:01 ` Eric Schulte
0 siblings, 1 reply; 5+ messages in thread
From: Greg Minshall @ 2013-05-01 19:08 UTC (permalink / raw)
To: emacs-orgmode
Org-mode version 8.0.1 (release_8.0.1-42-g267cbe @ /Users/minshall/usr/share/emacs/site-lisp/org/)
hi. the following produces #+RESULTS:
----
#+begin_src org :results replace
hello
#+end_src
----
but, repeated evaluations seem to grow the list of results. e.g., after
four evaluations:
----
#+RESULTS:
hello
hello
hello
hello
----
the following does not produce #+RESULTS at all:
----
#+begin_src org
hello
#+end_src
----
is this intended behavior? the code thinks so; ob-org.el has:
----
(defvar org-babel-default-header-args:org
'((:results . "raw silent") (:exports . "code"))
"Default arguments for evaluating a org source block.")
----
otoh, the manual thinks ":results replace" should be the default:
----
* 'replace' The default value. Any existing results will be removed,
and the new results will be inserted into the Org mode buffer in
their place. E.g., ':results output replace'.
----
cheers, Greg
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: odd behavior for begin_src org :results
2013-05-01 19:08 odd behavior for begin_src org :results Greg Minshall
@ 2013-05-01 20:01 ` Eric Schulte
2013-05-01 21:57 ` Greg Minshall
0 siblings, 1 reply; 5+ messages in thread
From: Eric Schulte @ 2013-05-01 20:01 UTC (permalink / raw)
To: Greg Minshall; +Cc: emacs-orgmode
Greg Minshall <minshall@umich.edu> writes:
> Org-mode version 8.0.1 (release_8.0.1-42-g267cbe @ /Users/minshall/usr/share/emacs/site-lisp/org/)
>
> hi. the following produces #+RESULTS:
> ----
> #+begin_src org :results replace
> hello
> #+end_src
> ----
> but, repeated evaluations seem to grow the list of results. e.g., after
> four evaluations:
> ----
> #+RESULTS:
> hello
> hello
> hello
> hello
> ----
>
Yes, this is the behavior of raw results.
>
> the following does not produce #+RESULTS at all:
> ----
> #+begin_src org
> hello
> #+end_src
> ----
>
> is this intended behavior?
This is the intended behavior for Org-mode blocks, it is not the
intended behavior in general.
> the code thinks so; ob-org.el has:
> ----
> (defvar org-babel-default-header-args:org
> '((:results . "raw silent") (:exports . "code"))
> "Default arguments for evaluating a org source block.")
> ----
> otoh, the manual thinks ":results replace" should be the default:
> ----
> * 'replace' The default value. Any existing results will be removed,
> and the new results will be inserted into the Org mode buffer in
> their place. E.g., ':results output replace'.
> ----
>
In this case the defaults for org-mode are different from the general
cross-language defaults.
As I recall, at the time that the defaults were set for Org-mode code
blocks, we did not have options like drawers to allow replaceable raw
results. Perhaps the default header arguments for Org-mode should be
updated.
Best,
>
> cheers, Greg
>
--
Eric Schulte
http://cs.unm.edu/~eschulte
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: odd behavior for begin_src org :results
2013-05-01 20:01 ` Eric Schulte
@ 2013-05-01 21:57 ` Greg Minshall
2013-05-03 7:46 ` Sebastien Vauban
0 siblings, 1 reply; 5+ messages in thread
From: Greg Minshall @ 2013-05-01 21:57 UTC (permalink / raw)
To: Eric Schulte; +Cc: emacs-orgmode
Eric,
thanks for the answer. another "#+begin_src org" question. it appears
that only *string* values are allowed for any :var that are defined
(i.e., ':var bar="foo"', and *not* ':var bar=3'). since i'm not 100%
sure of the semantics, maybe this is desired.
if one *should* be allowed to pass in, e.g., tables, numbers, etc., then
maybe org-babel-expand-body:org in ob-org.el wants to change from the
current
----
(defun org-babel-expand-body:org (body params)
(dolist (var (mapcar #'cdr (org-babel-get-header params :var)))
(setq body (replace-regexp-in-string
(regexp-quote (format "$%s" (car var))) (cdr var) body
nil 'literal)))
body)
----
to something like this
----
(defun org-babel-expand-body:org (body params)
(dolist (var (mapcar #'cdr (org-babel-get-header params :var)))
(setq body (replace-regexp-in-string
(regexp-quote (format "$%s" (car var)))
(if (stringp (cdr var))
(cdr var)
(format "%s" (prin1 (cdr var))))
body nil 'literal)))
body)
----
(as otherwise replace-regexp-in-string notices that (cdr var) is *not* a
string, and attempts to execute it.)
maybe^2 it would make even more sense to use the "#+begin_src
emacs-lisp" equivalent routine from ob-emacs-lisp.el as a template?
----
(defun org-babel-expand-body:emacs-lisp (body params)
"Expand BODY according to PARAMS, return the expanded body."
(let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
(result-params (cdr (assoc :result-params params)))
(print-level nil) (print-length nil)
(body (if (> (length vars) 0)
(concat "(let ("
(mapconcat
(lambda (var)
(format "%S" (print `(,(car var) ',(cdr var)))))
vars "\n ")
")\n" body "\n)")
(concat body "\n"))))
(if (or (member "code" result-params)
(member "pp" result-params))
(concat "(pp " body ")") body)))
----
(my elisp isn't strong enough to evaluate this.)
cheers, Greg
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: odd behavior for begin_src org :results
2013-05-01 21:57 ` Greg Minshall
@ 2013-05-03 7:46 ` Sebastien Vauban
2013-05-03 15:53 ` Eric Schulte
0 siblings, 1 reply; 5+ messages in thread
From: Sebastien Vauban @ 2013-05-03 7:46 UTC (permalink / raw)
To: emacs-orgmode-mXXj517/zsQ
Hello Greg,
Greg Minshall wrote:
> It appears that only *string* values are allowed for any :var that are
> defined (i.e., ':var bar="foo"', and *not* ':var bar=3').
Confirmed. The following does not work.
#+begin_src org :results drawer replace :var you=2
Hello $you
#+end_src
> since i'm not 100% sure of the semantics, maybe this is desired.
I dunno either. Clearly, an error should not happen. OTOH, there is no concept
of Org variable, so every variable here comes down to be implemented as a
simple string replacement, hence the need for strings only, maybe.
Best regards,
Seb
--
Sebastien Vauban
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: odd behavior for begin_src org :results
2013-05-03 7:46 ` Sebastien Vauban
@ 2013-05-03 15:53 ` Eric Schulte
0 siblings, 0 replies; 5+ messages in thread
From: Eric Schulte @ 2013-05-03 15:53 UTC (permalink / raw)
To: Sebastien Vauban; +Cc: emacs-orgmode
"Sebastien Vauban" <sva-news@mygooglest.com> writes:
> Hello Greg,
>
> Greg Minshall wrote:
>> It appears that only *string* values are allowed for any :var that are
>> defined (i.e., ':var bar="foo"', and *not* ':var bar=3').
>
> Confirmed. The following does not work.
>
> #+begin_src org :results drawer replace :var you=2
> Hello $you
> #+end_src
>
>> since i'm not 100% sure of the semantics, maybe this is desired.
>
> I dunno either. Clearly, an error should not happen. OTOH, there is no concept
> of Org variable, so every variable here comes down to be implemented as a
> simple string replacement, hence the need for strings only, maybe.
>
I've applied a simple fix which will allow any type of object to be
inserted into an Org-mode code block. Although there is a great deal of
potential for more sophisticated behavior here, hopefully this simple
solution will suffice.
>
> Best regards,
> Seb
--
Eric Schulte
http://cs.unm.edu/~eschulte
^ permalink raw reply [flat|nested] 5+ messages in thread
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2013-05-01 19:08 odd behavior for begin_src org :results Greg Minshall
2013-05-01 20:01 ` Eric Schulte
2013-05-01 21:57 ` Greg Minshall
2013-05-03 7:46 ` Sebastien Vauban
2013-05-03 15:53 ` Eric Schulte
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