Add #[doc(search_hidden)] attribute

[GuillaumeGomez]

Part of #67368.

r? @jyn514

[jyn514]

@GuillaumeGomez if you want this to be stabilized at some point it needs a tracking issue. You made #67368 the tracking issue in the code but you also said 'fixes' in the commit. Either it needs a new issue or you need to not close the existing one.

[GuillaumeGomez]

Ah indeed, force of habit... I'll update my first comment. Good catch, thanks!

[jyn514]

Can you also add a test that re-exports are still shown?

Suggested change

	#[doc(search_hidden)]
	/// Foo
	pub struct Bar;
	#[doc(search_hidden)]
	/// Foo
	pub struct Bar;
	mod inner {
	pub use Bar;
	}

and then update search_hidden.js.

[GuillaumeGomez]

Sure!

[jyn514]

I think this feature doesn't make sense in isolation, I'd rather have doc(canonical): rust-lang/rfcs#3011. I'll try to write that up into a full RFC some time this week.

[bors]

☔ The latest upstream changes (presumably #78889) made this pull request unmergeable. Please resolve the merge conflicts.

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@rustbot modify labels: +S-waiting-on-review -S-waiting-on-author

[jyn514]

I'm going to close this; I don't think this feature makes sense to add. Happy to collaborate on an RFC for doc(canonical) but I probably won't work on it myself for a while.