rustfmt breaks macros involving $

[stephanemagnenat]

This macro:

macro_rules! test_macro {
    ($member:ident $($rest:tt)*) => {
        paste::paste! {fn test(&self) {
        (self.$member$($rest)* )
        }}
    };
}

gets wrongly reformatted as:

macro_rules! test_macro {
    ($member:ident $($rest:tt)*) => {
        paste::paste! {fn test(&self) {
        (self.$$member($rest)* )
        }}
    };
}

The diff being:

4c4
<         (self.$member$($rest)* )
---
>         (self.$$member($rest)* )

The version being: rustfmt 1.6.0-stable (5680fa1 2023-08-23)

[stephanemagnenat]

Note that if there is a space after the first argument: self.$member $($rest)* then rustfmt doesn't produce the erroneous output.

[rscprof]

@rustbot claim