// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?:(?:(?>(.{1,5})(?:(?<=[^\S\r\n])[^\S\r\n]?|(?<=[,.;:!\/?])|(?=\r?\n|[-#%&*@_])|[^\S\r\n]))|(.{1,5}))(?:\r?\n)?|(?:\r?\n))").unwrap();
let string = "To be or not to be-that is the question";
let substitution = "$1$2\\r\\n";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/