// 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*.\[\/b\])").unwrap();
let string = "By purely mathematical reasoning it is possible [b]to demonstrate ([i]or[/i] [b]prove) a theorem which...
[b]There is little point ([i]or[/i] [b]sense) in listing all of the known amino acids.
Much of the gravel is used [b]\"as is\" ([i]соl.[/i]) for building roads.
Tuberculin test [b]is of doubtful value in the elderly since its interpretation is very difficult.
[b](As) viewed from the top ([i]or[/i] [b]from above) the insect's abdomen swings to the top as if it were a rudder.";
// 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/