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From: Eric Schulte <eric.schulte@gmx.com>
To: R.M.Krug@gmail.com
Cc: emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: var expansion on tangling only once per file
Date: Wed, 11 Apr 2012 10:15:55 -0400	[thread overview]
Message-ID: <87sjgaux10.fsf@gmx.com> (raw)
In-Reply-To: <4F7EBCDA.8010303@gmail.com> (Rainer M. Krug's message of "Fri, 06 Apr 2012 11:52:26 +0200")

This is not currently possible, and any conceivable implementation would
be necessarily complex requiring a good deal of cross-buffer
coordination.

Would it be possible to simply only declare the variable in a header
argument applying to the first code block?  Using a session would keep
that variables state through all subsequent code blocks.

Best,

Rainer M Krug <r.m.krug@gmail.com> writes:

> Hi
>
> I have a file wide variable defined and tangle several source blockd into one file.
>
> BNo the variable is expanded in each block.
>
> Would it be possible to have the expansion at the beginning of the file and nod be repeated, as
> this can cause problems?
>
> The following org code
>
> #+PROPERTY: tangle test.R
> #+PROPERTY: var TheVar=99
>
> * Part one
> #+begin_src R :tabgle:
>   x <- 1
> #+end_src
> * Problem
> #+begin_src R
>   y <- list(
>       x = 1,
> #+end_src
> * Problem continued
> #+begin_src R
>       x <- 3
> )
> #+end_src
>
> results in an error in R due to the repeated "TheVar <- 99" in the list definition.
>
> Org-mode version 7.8.08 (release_7.8.07.213.ge6fdf) from git this morning
>
> If I remember correctly, this sneeked in quite recently.
>
> Thanks,
>
> Rainer

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/

next prev parent reply	other threads:[~2012-04-11 17:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-06  9:52 var expansion on tangling only once per file Rainer M Krug
2012-04-11 14:15 ` Eric Schulte [this message]
2012-04-12  7:41   ` Rainer M Krug
2012-04-12 11:18     ` Olaf.Hamann

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