[feat] look ahead

[loynoir]

let mut parser = delimited(tag("("), tag("abc"), tag(")"));

assert_eq!(parser.parse("(abc)"), Ok(("", "abc")));

let mut parser = delimited_with_look_ahead(tag("("), WILD_ANY_MATCHER, tag(")"));

assert_eq!(parser.parse("(abc)"), Ok(("", ("(", "abc", ")"))));

[loynoir]

    (
        tag(A),
        take_till(|c| c == Z).and_then(parse_middle),
        tag(Z),
    )
    .map(Hello)
    .parse(input)