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Re: sometimes we don't want org-src to remove tabs [WAS: Re: [Orgmode] t

From: Carsten Dominik
Subject: Re: sometimes we don't want org-src to remove tabs [WAS: Re: [Orgmode] tangle and Makefile]]
Date: Thu, 28 Jan 2010 19:21:50 +0100

On Jan 28, 2010, at 4:47 PM, Dan Davison wrote:

"Martin G. Skjæveland" <address@hidden> writes:


I have two questions regarding org-babel-tangle and Makefile.

Running org-babel-tangle on the following file

* test

#+begin_src makefile :tangle Makefile
         echo "hello"

When I use this makefile

 $make -f Makefile. test

I get

 Makefile.:4: *** missing separator (did you mean TAB instead of 8
 spaces?). Stop.

even though I used TAB and not space when editing the Makefile code. How
can I avoid TABs being converted to space?

Hi again Martin,

This is more to do with org-mode sensu strictu (non-babel). When you
exit a code edit buffer, tabs are automatically converted to
spaces. There is an org-mode variable org-src-preserve-indentation which
already has a few different effects. Perhaps a solution is to add
not_removing_tabs to the effects of this variable, as in the patch
below. I can't think off hand what that's going to break -- anyone?


From d854544d24377434c2ace13aac45e85e42bcc7aa Mon Sep 17 00:00:00 2001
From: Dan Davison <address@hidden>
Date: Thu, 28 Jan 2010 10:36:29 -0500
Subject: [PATCH] org-src: Don't remove tabs when org-src-preserve- indentation is non-nil

lisp/org-src.el |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lisp/org-src.el b/lisp/org-src.el
index cdad99b..1d155cc 100644
--- a/lisp/org-src.el
+++ b/lisp/org-src.el
@@ -525,7 +525,7 @@ the language, a switch telling if the content should be in a single line."
         (preserve-indentation org-src-preserve-indentation)
         (delta 0) code line col indent)
-    (untabify (point-min) (point-max))
+    (unless preserve-indentation (untabify (point-min) (point-max)))
      (goto-char (point-min))
      (if (looking-at "[ \t\n]*\n") (replace-match ""))

If you have an *indented* code block where the #+begin src is already indented, this might mess up the relative indentation in the Org-mode buffer because TAB can land on odd places in the line. But I can see that this is a problem with Makefiles, so please apply the patch.


- Carsten

- Carsten

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