sigils in front of macro_rules's expr nonterminal can convert a literal to a ~str

[huonw]

#[feature(macro_rules)];

macro_rules! foo {
    ($e:expr) => { ~$e }
}

fn main() {
    *foo!(1); // fine
    *foo!("foo"); // error: type ~str cannot be derefenced
}

This would appear to go against Rust's non-textual macros.

(Writing ~($e) in the macro works.)

[ftxqxd]

I don’t think this is a problem any more because box "foo" is of type Box<&'static str>.

[huonw]

There's no sigils attached to strings any more, so this is indeed fixed. Thanks.