Re: Bug in LaTeX export of org-html-entities?

From: Carsten Dominik <carsten.dominik@gmail.com>
To: Geralt <usr.gentoo@googlemail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Bug in LaTeX export of org-html-entities?
Date: Mon, 29 Mar 2010 13:28:36 +0200	[thread overview]
Message-ID: <7EC5DE8B-E7C9-4C77-8E0D-FFE6B6E83353@gmail.com> (raw)
In-Reply-To: <fbdd0e51002260224y1e585a00v53bfd5209fd62535@mail.gmail.com>

Hi Gerald,

Ulf Stegemann and myself have been working on improving this
problem.  The result of this work is in a special branch on the
git repo, called "new-entity-support".

If you have time, maybe you can check out this branch and test it,
to see if the problem you reported is indeed fixed.

- Carsten

On Feb 26, 2010, at 11:24 AM, Geralt wrote:

> Hello,
>
> I think there's at least one bug in the
> org-export-latex-treat-backslash-char function, because it does not
> correctly export entries of the org-html-entities variable that have
> the form ("Rightarrow" . "&rArr;"). To render such entities the
> function uses (member (list string-after) org-html-entities), but that
> fails for these entries. Assuming that org-html-entities is an alist a
> correct check would be (assoc string-after org-html-entities). But
> even then I think the function is broken, because it renders these
> entities with the following piece of code:
> (cond ((member (list string-after) org-html-entities)
> 	 ;; backslash is part of a special entity (like "\alpha")
> 	 (concat string-before "$\\"
> 		 (or (cdar (member (list string-after) org-html-entities))
> 		     string-after) "$"))
>
>  ;; other cases follow here, I've omitted them
>
> If I replace just the condition-check with the (assoc ...) version the
> export of, for example, \Rightarrow works, but due to the association
> of Rightarrow with rArr we should expect that it should render
> \Rightarrow as "&rArr;" which is of course only meaningful for HTML.
> So I think we need here another condition, namely
> (cond ((assoc string-after org-html-entities)
>      (concat string-before "$\\"
>              (or (cdr (assoc string-after org-html-entities))
>                  string-after) "$"))
>
> but that's not enough we also need a new entity variable
> org-latex-entities which mapps entities like \rArr to \Rightarrow, so
> instead of an entry ("Rightarrow" . "&rArr;") we need an entry ("rArr"
> . "Rightarrow") and put an entry with empty cdr in this alist for
> Rightarrow: ("Rightarrow").
>
> Can you confirm this bug? And if yes, do you have a better solution
> than I to avoid the duplication of the entities variable?
>
>
>
>
>
> Geralt.
>
>
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- Carsten