cg

Input Stack: keys: List[String] Expr

⇨

Output Stack: Expr

Recursively add a list of keys to group by expressions. This can be useful for tooling that needs to adjust existing expressions to include keys in the grouping.

Before	After
name,sps,:eq, (,nf.app,),:by	name,sps,:eq, (,nf.app,),:by, (,nf.cluster,),:cg