//@ run-pass
pub fn main() {
let s = "\u{2603}";
assert_eq!(s, "☃");
let s = "\u{2a10}\u{2A01}\u{2Aa0}";
assert_eq!(s, "⨐⨁⪠");
let s = "\\{20}";
let mut correct_s = String::from("\\");
correct_s.push_str("{20}");
assert_eq!(s, correct_s);
}