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From: "Olaf.Hamann" <O.Hamann@gmx.net>
To: emacs-orgmode@gnu.org
Subject: [Babel] tangle - kind of macro expansion inside src blocks?
Date: Mon, 14 Mar 2011 15:30:27 +0100	[thread overview]
Message-ID: <4D7E2683.9040208@gmx.net> (raw)

Hello all,

is there a way to do so or are there plans to integrate
a macro expansion mechanism into org-babel-tangle
like that one org-mode already provides?

#+MACRO: name replacement
{{{name}}}


I would like to replace config parameter in begin_src...end_src blocks.
Change at one place in org-file shall change values in tangled code-files.

I helped myself with an ugly hack in org-babel-tangle,
so that following lines work for me at the moment.

#+MACRO CONFIG_PARAM01 45

#+begin_src sh :tangle file1.sh
     echo org-mode set CONFIG_PARAMETER to: {{{CONFIG_PARAM01}}}
#+end_src

#+begin_src sh :tangle file2.sh
     echo org-mode set CONFIG_PARAMETER to: {{{CONFIG_PARAM01}}}
#+end_src

(this is an example only - the language which I tangle to is not good at 
local vars support,
so using $CONFIG_PARAMETER inside tangled code is no solution to me)

But this is no solution, so I ask whether there is already some 
functionality to do like this,
which will nicely fit into the aspects of different languages to be used 
in src blocks.
Work of org-babel-detangle will be harder when using such a macro 
functionality
(supported languages need inline comments, what to do with other? ).

Regards,
Olaf

next             reply	other threads:[~2011-03-14 14:35 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-14 14:30 Olaf.Hamann [this message]
2011-03-14 15:35 ` [Babel] tangle - kind of macro expansion inside src blocks? Eric Schulte
2011-03-14 18:06   ` Olaf.Hamann

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