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This change partially addresses #14572. No CSS doesn't look fancy
but at least it is functional.
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stabilize outlives requirements
https://github.com/rust-lang/rust/issues/44493
r? @nikomatsakis
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docs: Use dollar sign for all bash prompts
Making it consistent across the board, as most of them already use `$`.
Also split one continues bash run into two, to make it easier see
different runs: one with warning and another with error.
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Co-authored-by: nikomatsakis
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stabilize #[used]
closes #40289
RFC for stabilization: rust-lang/rfcs#2386
r? @Centril
Where should this be documented? Currently the documentation is in the unstable book
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it'll be documented in the reference
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Making it consistent across the board, as most of them already use `$`.
Also split one continues bash run into two, to make it easier see
different runs: one with warning and another with error.
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update books for next release
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librustc_lint: In recursion warning, change 'recurring' to 'recursing'
The existing wording seems incorrect.
Aside: This warning, 'function cannot return without recursing' is not perfectly clear - it implies that the function _can_ return, it's just got to recurse. But really the fn cannot return period. Clearer wording: 'function recurses infinitely; it cannot return'; or 'function is infinitely self-recursive; it cannot return, and this is probably an error'. I like that.
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set cfg(rustdoc) when rustdoc is running on a crate
When using `#[doc(cfg)]` to document platform-specific items, it's a little cumbersome to get all the platforms' items to appear all at once. For example, the standard library adds `--cfg dox` to rustdoc's command line whenever it builds docs, and the documentation for `#![feature(doc_cfg)]` suggests using a Cargo feature to approximate the same thing. This is a little awkward, because you always need to remember to set `--features dox` whenever you build documentation.
This PR proposes making rustdoc set `#[cfg(rustdoc)]` whenever it runs on a crate, to provide an officially-sanctioned version of this that is set automatically. This way, there's a standardized way to declare that a certain version of an item is specifically when building docs.
To try to prevent the spread of this feature from happening too quickly, this PR also restricts the use of this flag to whenever `#![feature(doc_cfg)]` is active. I'm sure there are other uses for this, but right now i'm tying it to this feature. (If it makes more sense to give this its own feature, i can easily do that.)
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rustdoc: add flag to control the html_root_url of dependencies
The `--extern-html-root-url` flag in this PR allows one to override links to crates whose docs are not already available locally in the doc bundle. Docs.rs currently uses a version of this to make sure links to other crates go into that crate's docs.rs page. See the included test for intended use, but the idea is as follows:
Calling rustdoc with `--extern-html-root-url crate=https://some-url.com` will cause rustdoc to override links that point to that crate to instead be replaced with a link rooted at `https://some-url.com/`. (e.g. for docs.rs this would be `https://docs.rs/crate/0.1.0` or the like.) Cheekily, rustup could use these options to redirect links to std/core/etc to instead point to locally-downloaded docs, if it so desired.
Fixes https://github.com/rust-lang/rust/issues/19603
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add #[panic_handler]; deprecate #[panic_implementation]
r? @SimonSapin
cc #44489
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Rollup of 16 pull requests
Successful merges:
- #53311 (Window Mutex: Document that we properly initialize the SRWLock)
- #53503 (Discourage overuse of mem::forget)
- #53545 (Fix #50865: ICE on impl-trait returning functions reaching private items)
- #53559 (add macro check for lint)
- #53562 (Lament the invincibility of the Turbofish)
- #53563 (use String::new() instead of String::from(""), "".to_string(), "".to_owned() or "".into())
- #53592 (docs: minor stylistic changes to str/string docs)
- #53594 (Update RELEASES.md to include clippy-preview)
- #53600 (Fix a grammatical mistake in "expected generic arguments" errors)
- #53614 (update nomicon and book)
- #53617 (tidy: Stop requiring a license header)
- #53618 (Add missing fmt examples)
- #53636 (Prefer `.nth(n)` over `.skip(n).next()`.)
- #53644 (Use SmallVec for SmallCStr)
- #53664 (Remove unnecessary closure in rustc_mir/build/mod.rs)
- #53666 (Added rustc_codegen_llvm to compiler documentation.)
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update nomicon and book
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Implement try block expressions
I noticed that `try` wasn't a keyword yet in Rust 2018, so...
~~Fixes https://github.com/rust-lang/rust/issues/52604~~ That was fixed by PR https://github.com/rust-lang/rust/pull/53135
cc https://github.com/rust-lang/rust/issues/31436 https://github.com/rust-lang/rust/issues/50412
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`tool_attributes`, `proc_macro_path_invoc`, partially `proc_macro_gen`
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Fix typos found by codespell.
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I ignored the code block as I didn't see a way to run the doctest in 2018 -- I noticed the edition guide is also not testing its 2018 code snippits.
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The paragraph described a case where we can't optimize away repetitive
dynamic stack allocation. However, as arielb1 pointed out, it can
actually optimizable by dynamically delaying the stack unwinding.
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`Self` in type definitions (self_in_typedefs)
This implements the [`self_in_typedefs` feature](https://github.com/rust-lang/rfcs/blob/master/text/2300-self-in-typedefs.md) ([tracking issue 49303](https://github.com/rust-lang/rust/issues/49303)).
r? @eddyb
CC @Centril
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Use #[non_exhaustive] on internal enums
This replaces `__Nonexhaustive` variants (and variants thereof) with `#[non_exhaustive]`. These were mostly unstable previously, with the exception of the `cloudabi` enums and `Level` in proc_macro: these were `#[doc(hidden)]`, so clearly intended not to be used directly. It should be safe to replace all of these.
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remove references to AUTHORS.txt file
Rust does not ship an AUTHORS.txt file anymore.
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update books for new release
r? @Mark-Simulacrum
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Refer instead to thanks page.
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Change ManuallyDrop<T> to a lang item.
This PR implements the approach @RalfJung proposes in https://internals.rust-lang.org/t/pre-rfc-unions-drop-types-and-manuallydrop/8025 (lang item `struct` instead of `union`).
A followup PR can easily solve #47034 as well, by just adding a few `?Sized` to `libcore/mem.rs`.
r? @nikomatsakis
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