Confusing error message on incorrect macro invocation

[kmcallister]

#[feature(macro_rules)];

macro_rules! mymacro(
    ($x:ident) => ( "foo" );
)

fn main() {
    println(mymacro!());
}

$ rustc --version
rustc 0.9-pre (a7453ad 2013-10-22 15:31:26 -0700)
host: x86_64-unknown-linux-gnu

$ rustc foo.rs
foo.rs:1:0: 1:0 error: Unexpected end of macro invocation
foo.rs:1 #[feature(macro_rules)];
         ^

The error is the missing argument to the mymacro!() invocation. The error caret should point there, not to the first line in the crate.

[huonw]

Dupe of #7970.