From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Schulte <schulte.eric@gmail.com>
Subject: Re: [BABEL] BUG - error on tangling - disappears when changing the
 filename
Date: Mon, 30 Sep 2013 18:10:19 -0600
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To: Rainer M Krug <Rainer@krugs.de>
Cc: emacs-orgmode@gnu.org

>>>
>>> The question is now why is this function org-babel-mark-file-as-tangled
>>> receives NULL as a buffer-file-name? 
>>
>> I'm not sure, but perhaps you could wrap the body of buffer-file-name in
>> a (when (buffer-file-name) ...) form to protect against null files.
>
> Sounds reasonable and I'll put it in to have properly tangled files when
> this happens - but then the file-local-variables would not be added if
> the file name is null. Is there any way that I could find out why this
> is happening (or under which conditions)?
>

I'm not sure why this is happening.  You could use edebug to step
through the tangling process by edebugging the `org-babel-tangle'
function with (C-u C-M-x) i.e., (eval-defun 'edebug-it).

Cheers,

-- 
Eric Schulte
https://cs.unm.edu/~eschulte
PGP: 0x614CA05D