// 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"(?s)(<(?P<end>\/*)(A)(?P<number>\d+)>)(.*?)</\3\4>").unwrap();
let string = "<T1>
<A1>
lorem ipsum
</A1>
</T1>";
let substitution = "<test number=\"\\g<number>\">\\5</test>";
// result will be a String with the substituted value
let result = regex.replace(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/