unnecessary token "<-" in token definition

[madmalik]

The LArrow is defined as a token, but serves no purpose in the language as far as i can tell.

Maybe an oversight?

[kmcallister]

Nominating P-backcompat-lang:

macro_rules! foo {
    (<-) => ("yes");
    ($($x:tt)*) => ("no");
}

fn main() {
    println!("{}", foo!(< -));
}

(above currently prints no, in case one is curious)

[pnkfelix]

was used for moves!

[pnkfelix]

we're going to reserve the token for future use.

[kmcallister]

That makes sense to me. Good to know it's there on purpose :)