From mboxrd@z Thu Jan  1 00:00:00 1970
From: Indraneel Majumdar <indraneel@indraneel.info>
Subject: Re: problem with label in latex export
Date: Wed, 22 Sep 2010 09:23:17 +0530
Message-ID: <4C997DAD.2010406@indraneel.info>
References: <4C8A19AA.6080504@indraneel.info> <87tyli1zyx.fsf@gnu.org>
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To: Bastien <bastien.guerry@wikimedia.fr>
Cc: orgmode <emacs-orgmode@gnu.org>

  Sorry, forgot to cc to the list...

  Hi Bastien,

I'm so glad to receive a reply. The problem is twofold. I need numbered 
paragraphs in Latex, with cross-references to the paragraphs. Since 
latex seems to have muddled with \par and \endpar, although numbered 
paragraphs are possible in Tex, they are not automatic or simple in 
latex. Numbered lists, however are easy in orgmode. Another problem in 
Tex/Latex is that references always point to the beginning of the 
smallest environment (probably actually section, but maybe hyperref 
modifies it to the beginning of environment). So, placing a \label in a 
numbered list has the desired effect. However, orgmode seems to have a 
bug (or a feature lack), in that I cannot place a #+<<label>> inside a 
list without destroying the automatic numbering.
An example of what does not work (no label generated):
11.
     #+ <<target>>
     Some text
12.  More text [[target][go to]]

And this one breaks automatic numbering:

10. Something
#+<<target>>
11. Some text <<---- running C-c C-c on 11 changes it to 1.

Obviously, I want the target to be the item, not to some changeable text 
in the list content, and I also want to hide the target identifier.  
[Two more problems I noticed (or my lack of knowledge of orgmode): 
<<target>> always prints out the contents; i.e. an option like 
<<target><description>> would be nice. Also numbers in []; i.e. [[11]] 
or [[11][see 11]] get mangled in latex output; I couldn't figure out how 
to avoid that.]

Since I couldn't use numbered lists, the other option was to number 
paragraphs by hand, and place #+<<target>> in the lines above them. 
Orgmode does correctly place the \label but latex/tex ignores it. 
hyperref enables this label only if \phantomsection is present in the 
line above it. With \phantomsection and \label the pdf output works 
fine. Actually \phantomsection \label{target} works fine anywhere in the 
text.

My suggestion is twofold:

1. Allow a <<target><description>> where description can be empty or 
nil; eg. <<target><>>   If orgmode does not do something like this 
already, this will allow suppressing contents of the target in the 
output, if target is present inline; i.e. no #+
2. Add a \phantomsection where ever a <<target><description>> is 
located, while exporting to latex.

Please let me know if I'm missing something. I'm new to orgmode, and 
thank you for it.

Indraneel


On 2010-09-22 4:11, Bastien wrote:
> Hi Indraneel,
>
> Indraneel Majumdar<indraneel@indraneel.info>  writes:
>
>> Since orgmode already uses hyperref, is there any reason why
>> \phantomsection is not added before \label by default?
> Can you explain why \phantomsection is useful here?
>
> Thanks,
>