// 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"(?<=(\w\w:)|(\w:)) (.*\n?)\1?\2?").unwrap();
let string = "a: 1, 2, 3
a: a, b, v
b: 5, 6, 7
b: 10, 1543, 1345
b: e, fe, sdf
cd: asdf, asdfas dfasdfa,asdfasdfa,afdsfa sdf
e1: asdfas, dafasd, adsf, asdfasd
e1: 1, 3, 2
e1: 9, 8, 7, 6
";
let substitution = "\\t\\3";
// 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/