Re: latex enumeration issue

From: Mark Elston <m_elston@comcast.net>
To: emacs-orgmode@gnu.org
Subject: Re: latex enumeration issue
Date: Wed, 03 Feb 2010 18:24:02 -0800	[thread overview]
Message-ID: <4B6A2FC2.5020908@comcast.net> (raw)
In-Reply-To: <4B69DF82.70407@comcast.net>

Carsten,

Never mind.  I had had problems in the past getting the hook function
to work because I was making it harder than it needed to be.  I just
went back to trying my hand at it and got it working pretty easily.
Sigh.

I added a hook function to org-export-preprocess-hook and removed the
blank headers that way.  That solved the problem before it even starts.
I probably don't have to do any perl post-processing at all, now.

Thanks for all the help.

Mark

P.S.  If anyone is interested here is the embarrassingly simple hook
function I came up with.  I show it not because I think anyone else
will find this thing useful but as an example of how simple it really
is to write this kind of thing.

;;; Export Hooks
(defun mee-delete-empty-org-headers ()
   (while (re-search-forward "^[*]+   [ ]+:[a-zA-Z0-9]+:$" nil t)
     (progn
       (beginning-of-line)
       (kill-line 0))))

(add-hook 'org-export-preprocess-hook
           'mee-delete-empty-org-headers)

On 2/3/2010 12:41 PM, Mark Elston wrote:
> Hi Carsten,
>
> Thanks for the reply. My responses are below:
>
> On 2/3/2010 2:34 AM, Carsten Dominik wrote:
>> Hi Mark,
>>
>> On Feb 2, 2010, at 11:08 PM, Mark Elston wrote:
>>
>>> A year ago Flavio de Souza asked a question about latex enumerations
>>> that is similar to a problem I now have. The answer given then was a
>>> workaround that doesn't apply in my case.
>>>
>>> This stems from my project of using a single file to maintain source
>>> for generating my class notes *and* student handouts for my classes.
>>> This allows me to take advantage of the common outline and common
>>> text while specifying text that should go into only one or the other
>>> document.
>>>
>>> I manage to do this by something like:
>>>
>>> * Common heading
>>>
>>> Some common text
>>>
>>> ** A common subheading
>>>
>>> More common text
>>>
>>> *** :handouts:
>>> Something for handouts only
>>>
>>> *** :both:
>>> More common text
>>>
>>> *** :notes:
>>> My class notes text
>>>
>>> *** :both:
>>> More common text
>>>
>>>
>>> I have a makefile which creates a temporary .org file by
>>> prepending a specific header on this file for each type of
>>> output (handouts or notes), exporting to a latex file, running
>>> a perl script to remove any (sub)+sections with just the
>>> tags in them, and running pdflatex to generate the output.
>>>
>>> So far, so good.
>>>
>>> However, I ran into a problem with enumerations. Sometimes I
>>> have enumerations in my original org file which are separated by
>>> the 'empty' sectioning commands. This ends the enumeration and
>>> the next enumerated item starts a new one. The result is a set
>>> of enumerations with a single element in it. I get something
>>> like:
>>>
>>> 1. Blah
>>>
>>> handout-specific text
>>>
>>> 1. More Blah
>>>
>>> etc. These should really have been 1, 2, etc.
>>
>>
>> I don't understand. Why is the text "handout-specific text" still there?
>> Do you need it between the items?
>
> Yes (see below). I have in each of these items something I want as part
> of the handouts and some additional info I want to include for myself.
>
>  > Do you want to make it part of the
>> item (indentation would solve this).
>
> It will always be a part of the item, otherwise I would have made it a
> footnote or left it to after the enumeration.
>
> Unfortunately, indentation doesn't solve this. My example above was a
> little shy on details, sorry.
>
> If I have a file with:
>
> ------------------------------------
> #+EXPORT_EXCLUDE_TAGS: notes
>
> * Common Heading
> Common Text
>
> 1) Blah
>
> ** :handouts:
> handout-specific text
> ** :notes:
> note-specific text
> ** :both:
>
> 2) More Blah
>
> ** :handouts:
> handout-specific text
> ** :notes:
> note-specific text
> ** :both:
>
> 3) Even more...
> ------------------------------------
>
> After I export to latex and post process with my perl script I
> have the following for the body of my document:
>
> ------------------------------------
>
> \section{Common Heading}
> \label{sec-1}
>
> Common Text
>
> \begin{enumerate}
> \item Blah
> \end{enumerate}
>
> handout-specific text
>
> \begin{enumerate}
> \item More Blah
> \end{enumerate}
>
> handout-specific text
>
> \begin{enumerate}
> \item Even more\ldots{}
> \end{enumerate}
> ------------------------------------
>
> This is because the 'empty' placeholder headings (tags-only)
> interrupt the enumeration processing for each item, effectively
> ending it and causing the insertion of the \end{enumeration}.
> So each item is in it's own enumeration and the number restarts
> from 1 with each item.
>
>>
>>>
>>> The only workaround I have so far is to make all these items lists
>>> instead of enumerations. This works OK but they would make much more
>>> sense as enumerations.
>>
>>
>> How does this help?
>>
>
> It eliminates the numbers and uses only list marks instead. That way
> I don't have to worry about incorrect numbering of enumerations.
> Unfortunately, the text between items is still not indented properly
> since it appears outside the list environment.
>
> It is not ideal but it is something I can live with if I have to.
>
> Mark
>
>
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