I would prefer something like: match node: on (time _ 1 @ 0, foo _ 2, bar _ 3, baz _ any, status _ 1 @ -1): do_something()

I would prefer something like: match node: on (time _ 1 @ 0, foo _ 2, bar _ 3, baz _ any, status _ 1 @ -1): do_something() rematch do_something_2(foo) '_' indicating span, and '@' indicating position of the first item. Both can be omitted.