rustdoc: Erase `#![doc(document_private_items)]` I just found out about the existence of `#![doc(document_private_items)]`. Apparently it was added by PR rust-lang/rust#50669 back in 2018 without any tests or docs as a replacement for some specific forms of the removed `#![doc(passes)]` / `#![doc(no_default_passes)]`. However, rustc and rustdoc actually emit the deny-by-default lint `invalid_doc_attributes` for it (but if you allow it, the attribute does function)! To be more precise since PR rust-lang/rust#82708 (1.52, May 2021) which introduced lint `invalid_doc_attributes`, rust{,do}c has emitted a future-incompat warning for this attribute. And since PR rust-lang/rust#111505 (1.78, May 2024) that lint is deny by default. I presume nobody knew this attribute existed and thus it was never allowlisted. Given the fact that since 2021 nobody has ever opened a ticket ([via](https://github.com/rust-lang/rust/issues?q=is%3Aissue+document_private_items)) complaining about the lint emission and the fact that GitHub code search doesn't yield any actual uses ([via](https://github.com/search?q=%2F%23%21%5C%5Bdoc%5C%28.*%3Fdocument_private_items%2F+language%3ARust&type=code&ref=advsearch)), I'm led to believe that nobody knows about and uses this attribute. I don't find the existence of this attribute to be justified since in my view the flag `--document-private-items` is strictly superior: In most if not all cases, you don't want to "couple" your crate with this "mode" even if you gate it behind a cfg; instead, you most likely want to set this manually at invocation time, via a build config file like `.cargo/config.toml` or via a command runner like `just` I'd say. Because of this I propose to wipe this attribute from existence. I don't believe it's worth cratering this (i.e., temporarily emitting a hard error for this attribute and running crater) given the fact that it's been undocumented since forever and led to a warning for years. |
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This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrated with other languages.
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