Re: evaluation of perl in babel

[D M German <dmg@uvic.ca>]

 Achim Gratz twisted the bytes to say:


 Achim> D M German writes:
 >> There are some bugs. For example, the interpretation of :results table,
 >> vector and list.

 Achim> You may misunderstand some things, or I don't understand what you are
 Achim> asking.  It is (at least currently) the responsibility of the Perl
 Achim> program (or any other Babel language) to deliver the result in such a
 Achim> way that it can be interpreted correctly by the result type chosen (in
 Achim> other word, the program output must be valid Org syntax in the given
 Achim> context).  You can't have the same program produce tables, vectors and
 Achim> LaTeX output just by switching the results type.

I understand. But what I want is the output to be wrapped accordingly,
and my script to deliver exactly the output as expected. So say I want
to generate HTML in my script, I can use :results output, but then I
have to change to replace the #+being_example with #+begin_HTML.

I guess that I can generate a two dimensional table with perl too
using output (printing the necessary | and \n), but then it will be
wrapped with #+begin_example.


 >> But I think the main problem comes from the way that Babel expects the
 >> result. In Babel, and except for :results output, the last expression in
 >> perl is considered the input to the results.

 Achim> That is with the default wrapper function, which expects the program to
 Achim> return something that either is a string or interpolates to a string
 Achim> that Babel can interpret.  You can easily define one yourself that does
 Achim> different things, like simply open the output file then select the
 Achim> filehandle for output.  That's what I'd do in any case and I think it
 Achim> would work just as you want.

Perhaps a string can be the solution. Ok, I am testing:

#+begin_src perl :results table
("a|b|c|\n|c|d|e")
#+end_src

#+RESULTS:
| a | b | c | \n | c | d | e |

Ok, this seems to be more useful that returning a list of values. 
Is there a way to separate two rows in the result?

Thanks again Achim,

--daniel

--
Daniel M. German
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http://silvernegative.com/
dmg (at) uvic (dot) ca
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