Latex export issues when external links are used inside tables.

[Yuva <gnuyuva@gmail.com>]

hi,
   If I try to use link abbrevations inside tables, there are some issues
when exporting to latex. Say for example, if we consider the following eg :

------------8<---------------------------------8<--------------------

#+TITLE:     Simple refs stuff
#+AUTHOR:    Yuva
#+EMAIL:
#+DATE:
#+DESCRIPTION:
#+KEYWORDS:
#+LANGUAGE:  en
#+OPTIONS:   H:3 num:t toc:t \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
#+OPTIONS:   TeX:t LaTeX:nil skip:t d:nil todo:t pri:nil tags:not-in-toc
#+INFOJS_OPT: view:nil toc:nil ltoc:t mouse:underline buttons:0
path:http://orgmode.org/org-info.js
#+EXPORT_SELECT_TAGS: export
#+EXPORT_EXCLUDE_TAGS: noexport
#+LINK_UP:
#+LINK_HOME:

* Bug-References

#+CAPTION: References
#+LABEL: tbl:references
#+LINK: bugzilla http://10.1.2.9/bugzilla/show_bug.cgi?id=
#+LINK: ads http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?author=%s&db_key=AST
| bug  | link         |
|------+--------------|
| 129  | [[bugzilla:129]] |
| test | [[ads:test]]     |


------------8<---------------------------------8<--------------------

If the link contains this ampersand '&' character, which has special meaning
inside latex table, org mode generates incompatible .tex file. With the
latest org-mode {from git sources}, I have the following generated output :



------------8<---------------------------------8<--------------------

% Created 2009-06-15 Mon 16:51
\documentclass[11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{hyperref}


\title{Simple refs stuff}
\author{Yuva}
\date{15 June 2009}

\begin{document}



\setcounter{tocdepth}{3}
\tableofcontents
\vspace*{1cm}
\section{Bug-References}
\label{sec-1}


\begin{table}[htb]
\caption{\label{tbl:references}References}
\begin{center}
\begin{tabular}{ll}
 bug   &  link

                          \\
\hline
 129   &  \href{http://10.1.2.9/bugzilla/show_bug.cgi?id=129}{http://10.1.2.9/bugzilla/show\_bug.cgi?id=129}
                                                           \\
 test  &  \href{http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?author=test&db_key=AST}{http://adsabs.harvard.edu/cgi-bin/nph-abs\_connect?author=test\&db\_key=AST}
 \\
\end{tabular}
\end{center}
\end{table}


\end{document}


------------8<---------------------------------8<--------------------

'pdflatex' simply fails to produce a pdf because '&' has creeped in due to
'#+LINK: ads' expansion. This simple problem can be solved by treating
'&' as special character, and replace it with '\&'. For above example,
just replace 'test&db' with 'test\&db' IN-THE-FIRST-ARG-OF \href. Well, I
am new to elisp, and I am still figuring out how to counter this issue.
[Oh! what a lame excuse!].

Thanks,

-- 
YUVA