Rustdoc pretends that the struct is empty when it only has hidden public fields

[lifthrasiir]

pub struct A { private: uint }
pub struct B { pub public: uint }
pub struct C { #[doc(hidden)] pub hidden: uint }

A correctly shows the "some fields omitted" comment, but C doesn't. (The recent example that exhibits this problem is regex::Regex). This is quite misleading.

[alexcrichton]

Sounds like doc(hidden) fields should cause a field to behave as if it were priv in terms of rendering.