gistfile1.txt

#[feature(macro_rules)];

use std::io::MemWriter;

macro_rules! write(
    ($dst:expr, $($arg:tt)*) => ({
        let dst: &mut Writer = $dst;
        format_args!(|args| { ::std::fmt::write(dst, args) }, $($arg)*)
    })
)

fn main() {
    let mut w = MemWriter::new();
    (write!(&mut w, "")).unwrap();
}