@[unsafe()] fn allow_unsafe_parentheses() {} @[deprecated('use new_fn instead')] fn old_positional() {} @[deprecated(msg: 'use new_fn instead', after: '2999-10-10')] fn old_named() {} @[foo(bar: 'x', 123)] fn mixed_named_positional() {} @[foo(123, bar: 'x')] fn mixed_positional_named() {} struct Config { flag bool @[custom(flag: true, count: 2)] value string @[xml(name: 'cfg'); raw] }