Re: suppress \label{} in LaTeX export

From: Carsten Dominik <carsten.dominik@gmail.com>
To: Eric Schulte <schulte.eric@gmail.com>
Cc: Org Mode <emacs-orgmode@gnu.org>
Subject: Re: suppress \label{} in LaTeX export
Date: Fri, 2 Oct 2009 08:23:10 +0200	[thread overview]
Message-ID: <040F61DB-BCE6-4844-9383-FFF715DC4E78@gmail.com> (raw)
In-Reply-To: <m2vdiy91ea.fsf@gmail.com>

Hi Eric,

if you make the function first search for \documentclass{beamer}, then  
you
could add it to `org-export-latex-final-hook'.

- Carsten

On Oct 2, 2009, at 12:48 AM, Eric Schulte wrote:

> Hi Nick,
>
> Thanks for the patch, sadly I rely on labels in my other latex  
> exports.
> For now I'm just using the following little elisp function.
>
> --8<---------------cut here---------------start------------->8---
> (defun schulte/clean-beamer ()
>  "remove the \label{sec} headers from latex Beamer documents
> that have been exported by org."
>  (interactive)
>  (save-excursion
>    (goto-char (point-min))
>    (while (re-search-forward "^\\\\label{" nil t)
>      (move-beginning-of-line nil)
>      (delete-region (point) (save-excursion (forward-line 1)  
> (point))))))
> --8<---------------cut here---------------end--------------->8---
>
> Thanks -- Eric
>
> Nick Dokos <nicholas.dokos@hp.com> writes:
>
>> Eric Schulte <schulte.eric@gmail.com> wrote:
>>
>>
>>> Is it possible to suppress the \label{sec-1} lines following each
>>> headline after a LaTeX export?  I've found no mention of this in the
>>> manual, and the presence of headline labels is breaking my Beamer  
>>> TOC.
>>>
>>
>> I don't think so: they seem to be inextricably bound with headings.  
>> The
>> code in org-latex.el says:
>>
>>  (let* (...
>> 	 (label (org-get-text-property-any 0 'target heading))
>>         ...)
>>
>>
>> and then
>>        ...
>> 	(when label
>> 	  (insert (mapconcat (lambda (l) (format "\\label{%s}" l))
>> 			     label-list "\n") "\n"))
>>        ...
>>
>> I recall having problems with labels (among other things) in  
>> combination
>> with beamer before (I "solved" the problem by running the tex file
>> through a script to just get rid of them), but I don't remember  
>> what the
>> problem was. Maybe it's time to go back and look at the thing again.
>>
>> Nick
>>
>> PS. Here is a quick-n-dirty patch to disable them - ymmv, uayor and  
>> several
>> other cya disclaimers :-)
>>
>> diff --git a/lisp/org-latex.el b/lisp/org-latex.el
>> index 248d653..f5099f7 100644
>> --- a/lisp/org-latex.el
>> +++ b/lisp/org-latex.el
>> @@ -852,6 +852,8 @@ and its content."
>>   (let ((num (plist-get org-export-latex-options-plist :section- 
>> numbers)))
>>     (mapc (lambda(x) (org-export-latex-subcontent x num))  
>> subcontent)))
>>
>> +(defvar org-export-latex-labels-enabled nil)
>> +
>> (defun org-export-latex-subcontent (subcontent num)
>>   "Export each cell of SUBCONTENT to LaTeX.
>> If NUM, export sections as numerical sections."
>> @@ -862,7 +864,7 @@ If NUM, export sections as numerical sections."
>> 	 (occur (number-to-string (cdr (assoc 'occur subcontent))))
>> 	 (content (cdr (assoc 'content subcontent)))
>> 	 (subcontent (cadr (assoc 'subcontent subcontent)))
>> -	 (label (org-get-text-property-any 0 'target heading))
>> +	 (label (and org-export-latex-labels-enabled (org-get-text- 
>> property-any 0 'target heading)))
>> 	 (label-list (cons label (cdr (assoc label
>> 					     org-export-target-aliases)))))
>>     (cond
>
>
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