// 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)Keyword(?=[^><]*<\/p>)").unwrap();
let string = "<div>
<img />
<span>Foo Bar - Keyword</span>
</div>
<h2>Keyword - Foo Bar</h2>
<p>Lorem Ypsum, Keyword, Lorem Pysum.</p>
<h2>Heading - Keyword</h2>
<p>Lorem Ypsum, Keyword, Lorem Pysum.</p>
...";
let substitution = "<em>$0</em>";
// 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/