#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    let yes = "y̆es";
    let mut char_indices = yes.char_indices();
    assert_eq!(Some((0, 'y')), char_indices.next());
    assert_eq!(Some((1, '\u{0306}')), char_indices.next());
    assert_eq!(Some((3, 'e')), char_indices.next());
    assert_eq!(Some((4, 's')), char_indices.next());
    assert_eq!(None, char_indices.next());
}