The Errai project includes program listings in various languages (for example, Java and XML). Although the language of the program listings are indicated in the wiki markup, when we export them, they come out as plain <programlisting> elements with no language="java" or language="xml" attribtues. This necessitates the tedious and error-prone task of going through each of the exported docbook files and setting the appropriate language attribtue on each programlisting.