Rust 1.53 seems to handle these correctly - feedback welcome.

    let s = String::from("noël");
    println!("Printable? {}", s);
    println!("Countable? {}", s.chars().count());
    println!("Reversable? {}", s.chars().rev().collect::<String>());
    println!("First three characters? {}", s.chars().take(3).collect::<String>());

Output:

    Printable? noël
    Countable? 4
    Reversable? lëon
    First three characters? noë

Repo for the "noël" example and "cats" example: https://github.com/joelparkerhenderson/demo-rust-string-issu...