Another small update: The screenshot below shows two updates to Groovy syntax highlighting in the next RSTA release:
- Variables and expressions in GStrings will be highlighted.
- (Some) regular expressions will be highlighted (hard to see, but the “/\d+/” is in brown).
Recent use at work had made my love for Groovy grow, so I decided to give back in the only way I know how. 
Highlighted expressions in GStrings