// compile-flags: --cfg a(b)
-// error-pattern: invalid `--cfg` argument: `a(b)` (expected `key` or `key="value"`, ensure escaping is appropriate for your shell, try 'key="value"' or key=\"value\")
+// error-pattern: invalid `--cfg` argument: `a(b)` (expected `key` or `key="value"`)
fn main() {}