// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

macro_rules! gen {
    ($name:ident ( $($dol:tt $var:ident)* ) $($body:tt)*) => {
        macro_rules! $name {
            ($($dol $var:ident)*) => {
                $($body)*
            }
        }
    }
}

gen!(m($var) $var);

fn main() {
    let x = 1;
    assert_eq!(m!(x), 1);
}