Rust lexer chokes on #idents inside quote! macro

[Anteru]

(Original issue 1357 created by None on 2017-06-18T14:22:25.731309+00:00)

Inside quote!( ... ) or quote!{ ... }, identifiers following an octothorpe (e.g. #my_var) should be highlighted.

Instead, it currently errors.

Examples:

let foo = "bar";
let bar = quote!(#foo);

Ok(quote! {
    let foo = #foo;
})

[Anteru]

Reproduced 2021-03-05

[Anteru]

Thanks!