From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Charles C. Berry" <ccberry@ucsd.edu>
Subject: Re: Babel CALL no longer produces HTML output
Date: Sat, 23 Jul 2016 09:10:22 -0700
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To: Jarmo Hurri <jarmo.hurri@iki.fi>
Cc: emacs-orgmode@gnu.org

On Sat, 23 Jul 2016, Jarmo Hurri wrote:

>
> Greetings.
>
> The Org example below used to work correctly when exported as HTML until
> I pulled a newer version of Org from git. I am first going to include
> the example here, and then explain the reasoning behind its structure.
>

Commit dbb375f mades changes to the babel call handling.

IIUC, one result is that header args in the src block being called take 
precedence over default header args. More below.


> =======================================================================
> * Example
>
>  This call here produced HTML output when exported as HTML until the
>  newer versions of Org. Now it produces no HTML output whatsoever.
>
>  #+CALL: rekursio-pystyviivat[:noweb yes]() :results html
>

Try this:

#+CALL: rekursio-pystyviivat[:noweb yes :exports results]() :results html


>  The following code blocks still work as expected.
>

[snip]

Since you have `:exports code' here, that prevents the evaluation of the 
babel call above:


>  #+NAME: rekursio-pystyviivat
>  #+BEGIN_SRC processing :exports code :noweb no
>    void piirraPystyviivat (int viivoja, float x, float korkeus)
>    {
>      <<rekursio-pystyviivat-runko>>
>    }
>
>    void setup ()
>    {
>      size (600, 400);
>      noLoop ();
>    }
>
>    void draw ()
>    {
>      piirraPystyviivat (50, 10, 350);
>    }
>  #+END_SRC
> =======================================================================


I am not sure I find this new behavior to be an improvement.


Chuck