// 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)^ {0,3}((?:(`){3,}?)|(?:(~){3,}?))(?!\2\3)(?:([^`\n]+?)(\1(?:\2\3)*)|(?:( *([^ \n]+)[^`\n]*)?\n([\s\S]*?)(^ {0,3}))(\1(?:\2\3)*)(?=$))").unwrap();
let string = "```js
var test = 'test';
```
```js
var x = \"John Doe\";
console.log( x );
```";
// 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/