Bug(?) in LaTeX export?

[Thorsten Jolitz <tjolitz@googlemail.com>]

Hi List, 

when I export an Org file with Source blocks to LaTeX (:exports code),
the blocks are converted into environments of package 'listings':

,----------------------
| \lstset{language=...}
| \begin{lstlisting}
| (def  ... )
| \end{lstlisting}
`----------------------

but:

1. the package is not loaded in the preamble (there is no
\usepackage{listings}). 

2. the language name in {language=XXX} is simply copied from
   '#+begin_src XXX' and might not be defined in the listings package. 

Both points cause LaTeX errors. 

-- 
cheers,
Thorsten