Hi,
I have updated the list of Vala keywords. I also added Valadoc keywords to the 'docComment' value. There were some keywords that I didn't know about in the 'primary' value, so I left them to be safe.
Also still curious about the default tags I asked about in: http://lists.uvena.de/geany-devel/2011-February/003936.html
Cheers, Matthew Brush