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From: "Charles C. Berry" <ccberry@ucsd.edu>
To: "O.Hamann" <O.Hamann@gmx.net>
Cc: emacs-orgmode@gnu.org
Subject: Re: [babel] is there a chance to split arguments in src block calls or noweb syntax
Date: Sun, 31 Jan 2016 11:34:26 -0800	[thread overview]
Message-ID: <alpine.OSX.2.20.1601311116450.1553@charles-berrys-macbook.local> (raw)
In-Reply-To: <56ADC60F.5080404@gmx.net>

On Sun, 31 Jan 2016, O.Hamann wrote:

> Hi all,
>
> Splitting header arguments for source blocks into different lines works very 
> fine,
> (and leads one to put more and more args in the header... )
>
> Is there a chance or trick to do similarly when calling such src blocks?
> Somehow like in shell scripts a backslash at the end of a line will signal 
> continuation?
> (example see below)
>
> Any suggestions or workarounds or best-practices to make the call lines 
> better readable and editable are welcome!
>
> Kind regards,
>
> Olaf
>

Try using a custom babel language. Then using variable assignment from 
babel block.

Here I define `fundamental' as a language, which means I can edit src 
blocks like `lorem' in a src edit buffer in fundamental mode without 
needing to do more than execute the `define-fundamental-as-babel' block or 
put that defun in my .emacs. And when I execute the lorem block - as when 
it is used in `:var txt=lorem()' - it returns the body as a string.


#+NAME: define-fundamental-as-babel
#+BEGIN_SRC emacs-lisp
   (defun org-babel-execute:fundamental (body params)
     (format "%s" body))
#+END_SRC

#+NAME: lorem
#+BEGIN_SRC fundamental
   Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
#+END_SRC

#+NAME: abc
#+BEGIN_SRC emacs-lisp :results value :var txt="A B C"
(concat "txt-->" txt "<--txt")
#+END_SRC

#+CALL: abc( lorem() ) :results raw :wrap EXAMPLE

#+RESULTS:
#+BEGIN_EXAMPLE
txt-->Lorem ipsum dolor sit amet, consectetuer adipiscing elit.<--txt
#+END_EXAMPLE


BTW, there is already `org-babel-execute:latex', which is very handy for 
editing LaTeX and then handing it to a src block for further processing.

HTH,

Chuck

next prev parent reply	other threads:[~2016-01-31 19:34 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-12  1:41 Noweb: Same function, two string results differ one with double-quotes the other without Grant Rettke
2016-01-31  8:30 ` [babel] is there a chance to split arguments in src block calls or noweb syntax O.Hamann
2016-01-31 19:34   ` Charles C. Berry [this message]
2016-02-05  7:49     ` O.Hamann

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