Passing $crate from macro_rules fails

[Ralith]

Reproduce by running cargo test in this testcase.

[dtolnay]

Thanks! I would accept a PR to fix this.

[dtolnay]

We need to find the step where the $crate token decomposes from Ident { ident: "$crate" } (which is how rustc is supposed to treat it) to Punct { ch: '$', spacing: Alone }, Ident { ident: "crate" }.

[dtolnay]

Look like a compiler bug -- closing in favor of rust-lang/rust#62325.

[Ralith]

Thanks for investigating!