rust-analyzer fails to display comment generated during nested macro expansion

[0rphon]

possibly related to #13075

the following has a macro that generates documentation for A and for B. Rust-Anaylzer displays the documentation just fine for B, but shows no documentation for A.

macro_rules! tester {
    ($x:expr, $n:ident) => {
        tester! {@inner concat!("This is ", $x), $n}
    };
    (@inner $x:expr, $n:ident) => {
        #[doc = $x]
        const $n: u8 = 1u8;
    };
}

tester!("A", A);
tester!(@inner "This is B", B);

fn main() {
    A;
    B;
}

just to confirm that the docs exist, here's the output of cargo expand (cargo doc also confirms a doc string exists for A)

#![feature(prelude_import)]
#[prelude_import]
use std::prelude::rust_2021::*;
#[macro_use]
extern crate std;
///This is A
const A: u8 = 1u8;
///This is B
const B: u8 = 1u8;
fn main() {
    A;
    B;
}

but using rust-analyzer: Expand Macro Recursively shows that the 'A' doc has parentheses around it, which would be considered a syntax error

// Recursive expansion of tester! macro
// =====================================

#[doc = ("This is A")]
const A: u8 = 1u8;

// Recursive expansion of tester! macro
// =====================================

#[doc = "This is B"]
const B: u8 = 1u8;

rust-analyzer version: both the release version 0.3.1186-standalone (e8e598f64 2022-08-28) and pre-release version 0.4.1192-standalone (8ddb8b7e8 2022-09-03)

rustc version: both rustc 1.63.0 (4b91a6ea7 2022-08-08) and rustc 1.65.0-nightly (84f0c3f79 2022-09-03)

relevant settings: None

[0rphon]

i messed around with this some more and i found a similar example that may actually be a separate issue. rust-analyzer manages to generate the correct syntax for the doc string but still fails to show documentation for it

code:

macro_rules! tester {
    ($n:ident) => {
        #[doc = concat!("This is ", stringify!($n))]
        const $n: u8 = 1u8;
    };
}

tester!(A);

fn main() {
    A;
}

cargo expand:

#![feature(prelude_import)]
#[prelude_import]
use std::prelude::rust_2021::*;
#[macro_use]
extern crate std;
///This is A
const A: u8 = 1u8;
fn main() {
    A;
}

rust-analyzer expansion:

// Recursive expansion of tester! macro
// =====================================

#[doc = "This is A"]
const A: u8 = 1u8;

on hover:

[jonas-schievink]

We don't support macros in attribute values at the moment

[Veykril]

Duplicate of #8092