Case is

# A case says its value with `is` (owner, 2026-10-07; `#strict`'s `giveS` before), and may do
# other work first.
enum Status { empty, claimed: str.utf8, locked }
fn label ['s': Status] -> str.utf8 {
    let immut 'text' := match 's' {
        empty         { is "free"; }
        claimed 'who' { let immut 'prefix' := "taken by "; is 'prefix' ++ 'who'; }
        locked        { is "locked"; }
    };
    return give 'text';
}
MAIN {
    std::print.useful[label[Status.claimed["bo"]], newln];
}