// 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"(?m)(?:\b(?=\w)|\B(?!\w))\(*\b[CDEFGAB](?:b|bb)*(?:\+|\#{1,2}|dim|sus|maj|min|aug|[mM°0-9])*\(?[\d\/]*\)?(?:[CDEFGAB](?:b|bb)*(?:\#{1,2}|dim|sus|maj|min|aug|[mM°0-9])*[\d\/]*)*\)*(?:\b(?<=\w)|\B(?<!\w))").unwrap();
let string = "F#
Angel eyes,
G#m
Why won’t you let me apologise?
Foul";
let substitution = "<span class=\"_c\">$1</span>";
// 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/