[Orgmode] org-add-link-type

[Thomas S. Dye]

Aloha all,

Sorry in advance for coming to the list with a beginner type question,  
but I'm stumped.

I'm trying to use the extended link syntax to export citations to  
LaTeX.  If the link lacks a description, then I don't want the \citep  
command to have an optional argument.  As I understand the  
documentation, if the description is absent, then the variable desc is  
nil, so the following looks good to my untrained eye.  But, it doesn't  
add the optional argument when the description is present.

  (org-add-link-type
   "citep" 'ebib
   (lambda (path desc format)
     (cond
      ((eq format 'latex)
       (when (and desc)
         (format "\\citep[%s]{%s}" desc path)
         (format "\\citep{%s}" path))))))

All the best,
Tom