Private macros are documented

[dylni]

Code

I tried this code:

macro_rules! private_macro {
    () => {};
}

I expected to see this happen: private_macro is hidden from the documentation.

Instead, this happened: private_macro is shown in the documentation and has its own page. Private declarative macros are also shown.

Version it worked on

It most recently worked on: rustc 1.56.0-nightly (8007b50 2021-08-14)

Version with regression

rustc --version:

rustc 1.56.0-nightly (5eacec9ec 2021-08-28)

[dylni]

@rustbot modify labels +requires-nightly

[inquisitivecrystal]

Thanks for filing this issue!

This regression was almost certainly introduced in #88019. I'm looking into it.