[Orgmode] Link descriptions

[Thomas S. Dye]

Aloha all,

After reading through the documentation fairly carefully, link  
descriptions are yielding unexpected results.  Perhaps I missed  
something?

I have a link defined for citep:

#+source: define-citep-link
#+begin_src emacs-lisp
  (org-add-link-type
   "citep" 'ebib
   (lambda (path desc format)
     (cond
      ((eq format 'latex)
       (format "\\citep[%s]{%s}" desc path)))))
#+end_src

With input like [[citep:jones][Jones]], it works fine, yielding  
\citep[Jones]{jones}.

My hope, however, is to pass page numbers in the description so with  
[[citep:jones][123]] I get \citep[123]{jones}.  When I have a  
description like this, I get [[citep:jones]$^{123}$] instead.

This looks like a bug to me (at least I wish it would work to pass  
page numbers to the \citep command).  Have I overlooked a restriction  
on link descriptions?

All the best,
Tom