Mouseover doc rendering doesn't handle `doc` attr that uses concat.

[Lokathor]

I wrote some functions via macro like this:

macro_rules! impl_get_bit {
  ($fn_name:ident, $t:ty) => {
    /// Determines if the `b` bit is set in `u`.
    ///
    /// ## Panics
    #[doc = concat!("* `b` must be less than `",stringify!($t),"::BITS`.")]
    #[inline]
    #[must_use]
    pub const fn $fn_name(b: u32, u: $t) -> bool {
      assert!(b < <$t>::BITS);
      let mask = 1 << b;
      (x & mask) != 0
    }
  };
}

impl_get_bit!(u8_get_bit, u8);
impl_get_bit!(u16_get_bit, u16);
impl_get_bit!(u32_get_bit, u32);
impl_get_bit!(u64_get_bit, u64);
impl_get_bit!(u128_get_bit, u128);

And the rustdoc generated docs will show the bullet point with the type concat'd into the line:

• b must be less than u8::BITS.

but the RA generated mouseover rendering of the docs just cuts off the last line entirely.

rust-analyzer version: rust-analyzer version: 0.3.1148-standalone (2b472f6 2022-07-31)

rustc version: rustc 1.64.0-nightly (0f4bcadb4 2022-07-30)

relevant settings: I don't believe there's any settings at play here, probably the document renderer just doesn't know how to handle doc=$expression stuff.

[Veykril]

We don't yet expand macros in attribute inputs #8092

[Lokathor]

fair, closing this one