Would be nice :)
There appears to be someone who has written a functional Groovy lexer here:
I am not a Python guy or I would give it a whirl :)
Definitely would be useful to have a Groovy lexer so Github could use it; Groovy/Grails is like the only language that doesn't have a lexer at this point.. :)
The lexer on that page fails to highlight the example file provided...
Pulled Groovy lexer from bgoetzmann.
What version is this in, and is Groovy syntax highlighting going to make it into Lodge It (http://paste.pocoo.org/show/460538/)?