Rustdoc should handle built-in macros

[gdennie]

The macro, repr, does not show up in the std or beta version of the documentation based on search results for, https://doc.rust-lang.org/beta/std/?search=repr.

It does get covered in Rust Reference.

Perhaps the documentation could be amended with an entry linking to the reference documentation for such instances, even temporarily.

[Noratrieb]

This isn't specific to repr but a problem for all attributes (repr isn't a macro but an attribute). For example, the non_exhaustive attribute doesn't show up either. https://doc.rust-lang.org/std/?search=non_exhaustive

I agree that rustdoc should handle built-in attributes (just like how it handles keywords).

[gdennie]

Thanks for the insight. :)

Since the UI to the world of Rust is the language, things that are different should look different. Specifically, if its syntax is a macro then they should document like a macro even though the functionality it delivers may not be replicated by any user definable macro.

[lolbinarycat]

I think its worth noting built-in attributes predate attribute macros, so it's more accurate to say that some proc-macros look like builtin attributes.