But at the same time this junk variable is code-as-documentation professing the incomplete destructuring is intentional. You could go a step further and have a

But at the same time this junk variable is code-as-documentation professing the incomplete destructuring is intentional. You could go a step further and have a special ignore symbol, (for instance * ) like most pattern matching languages/libraries have with the property that it can appear multiple times: arc> (let (x * y . *) '(a b c d e f) y) c