// 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(longword1|longword2|longword3)\b.*?\b(?!\1\b)((?1))\b.*?\b(?!(?:\1|\2)\b)(?1)\b").unwrap();
let string = "A longword1 B longword2 C longword3 D
^--------------------------------^
A longword2 B longword1 C longword3 D
^-------------------------------^
A longword3 B longword2 C longword1 D
^-------------------------------^
";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
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/