Macro gstuff::take_until_parse_s

macro_rules! take_until_parse_s {
    ($i: expr, $remainder: ident! ($($args:tt)*)) => { ... };
    ($i: expr, $f: expr) => { ... };
}

Implements the /(?x) (.*?) (remainder)/ pattern: looks for remainder first, then returns a tuple with the prefix and the remainder.

Discussion: https://www.reddit.com/r/rust/comments/4yokxd/crash_course_into_nom_kind_of_question/

Example iterating over an input:

    let mut pos = input;
    while let IResult::Done (tail, (_head, _parsed_remainder)) = take_until_parse_s! (pos, tag! ("remainder")) {
        pos = tail
    }