It took me a while to figure this, so I'm posting it here in the hope it will be helpful to others.
If you use Linux/GNOME as your development environment you may be annoyed by the fact that .ss files, when opened by gedit, display as just plain text with no syntax highlighting.
To fix this, simply edit ~/.local/share/mime/packages/user-extension-ss.xml to look like the following:
<?xml version="1.0" encoding="UTF-8"?> <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info"> <mime-type type="application/x-extension-ss"> <comment>ss document</comment> <glob pattern="*.ss"/> <sub-class-of type="text/html"/> </mime-type> </mime-info>
, restart gedit and you should be good to go!