Learn how easy it is to sync an existing GitHub or Google Code repo to a SourceForge project! See Demo
If you know a little php, it would not be hard to make it yourself. See section 4 of the documentation that comes with GeSHi.
Otherwise, I'm not familiar with this language and so could not write the language file myself. If you could find someone with a little PHP experience and who knew your language, you could get them to write it.