nom::separated_pair1!

macro_rules! separated_pair1 {
    ($i:expr, $res1:ident, $submac2:ident!( $($args2:tt)* ), $($rest:tt)+) => { ... };
    ($i:expr, $res1:ident, $g:expr, $($rest:tt)+) => { ... };
}

Internal parser, do not use directly