split text on multiple separators and put into a list
use regex::Regex;
fn main() {
// split text on multiple separators and put into a list
let q = "The quick brown fox jumps over the lazy dog's back";
let separator = Regex::new(r"([ ,.]+)").expect("Invalid regex");
let words: Vec<_> = separator.split(q).into_iter().collect();
println!("{:?}", words);
}