How to add new extension ".cl" into configuration file?

Jean Louis <[email protected]> Fri, 23 Dec 2016 11:44:12 +0300

Newsgroups	gmane.comp.gnu.source-highlight.general
Message-ID	<[email protected]>

Hello,

I have the configuration file here:

$HOME/.source-highlight/source-highlight.conf

I am trying to add the new extension for lisp language:

extension "cl" = lisp.lang

Is that wrong? I could not make it working.

Jean