From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Charles C. Berry" <ccberry@ucsd.edu>
Subject: Re: Preserve tabs in tangled babel output
Date: Wed, 11 Mar 2015 07:56:13 -0700
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To: Roger Mason <rmason@mun.ca>
Cc: emacs-orgmode@gnu.org

On Wed, 11 Mar 2015, Roger Mason wrote:

> Hello,
>
> This code:
>
> #+BEGIN_SRC makefile :tangle Makefile
>  hello:  hello.f90
>          gfortran hello.f90
>
>  execute: hello
>          ./a.out
>
>  clean:
>          rm -f a.out *.o
> #+END_SRC
>
> (stolen from John Kitchin) produces a Makefile with spaces instead of
> tabs.  I created the content in makefile mode, with tabs, but emacs
> untabifies the output.  How can I prevent this?

Use the `-i' results switch:

  #+BEGIN_SRC makefile -i :tangle Makefile

or set `org-src-preserve-indentation' non-nil.

HTH,

Chuck