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Nicholas Nethercote 5cf198d0d6 Remove path choice from x fmt and add --all option.
By default, `x fmt` formats/checks modified files. But it also lets you
choose one or more paths instead.

This adds significant complexity to `x fmt`. Explicit paths are
specified via `WalkBuilder::add` rather than `OverrideBuilder::add`. The
`ignore` library is not simple, and predicting the interactions between
the two mechanisms is difficult.

Here's a particularly interesting case.
- You can request a path P that is excluded by the `ignore` list in the
  `rustfmt.toml`. E.g. `x fmt tests/ui/` or `x fmt tests/ui/bitwise.rs`.
- `x fmt` will add P to the walker (via `WalkBuilder::add`), traverse it
  (paying no attention to the `ignore` list from the `rustfmt.toml`
  file, due to the different mechanism), and call `rustfmt` on every
  `.rs` file within it.
- `rustfmt` will do nothing to those `.rs` files, because it *also*
  reads `rustfmt.toml` and sees that they match the `ignore` list!

It took me *ages* to debug and understand this behaviour. Not good!

`x fmt` even lets you name a path below the current directory. This was
intended to let you do things like `x fmt std` that mirror things like
`x test std`. This works by looking for `std` and finding `library/std`,
and then formatting that. Unfortuantely, this motivating case now gives
an error. When support was added in #107944, `library/std` was the only
directory named `std`. Since then, `tests/ui/std` was added, and so `x
fmt std` now gives an error.

In general, explicit paths don't seem particularly useful. The only two
cases `x fmt` really needs are:
- format/check the files I have modified (99% of uses)
- format/check all files

(While respecting the `ignore` list in `rustfmt.toml`, of course.)

So this commit moves to that model. `x fmt` will now give an error if
given an explicit path. `x fmt` now also supports a `--all` option. (And
running with `GITHUB_ACTIONS=true` also causes everything to be
formatted/checked, as before.) Much simpler!
2024-05-29 16:24:48 +10:00
.github Add "Setup Python" action to github-hosted runners 2024-05-26 22:43:52 +00:00
.reuse std: move Once implementations to sys 2024-03-12 15:41:06 +01:00
compiler Auto merge of #125665 - matthiaskrgr:rollup-srkx0v1, r=matthiaskrgr 2024-05-28 18:21:24 +00:00
library Rollup merge of #125637 - nnethercote:rustfmt-fixes, r=GuillaumeGomez 2024-05-28 18:04:33 +02:00
LICENSES Add missing CC-BY-SA-4.0. 2023-11-27 11:03:53 +00:00
src Remove path choice from x fmt and add --all option. 2024-05-29 16:24:48 +10:00
tests Auto merge of #125665 - matthiaskrgr:rollup-srkx0v1, r=matthiaskrgr 2024-05-28 18:21:24 +00:00
.editorconfig Only use max_line_length = 100 for *.rs 2023-07-10 15:18:36 -07:00
.git-blame-ignore-revs Ignore compiletest test directive migration commits 2024-02-22 18:55:02 +00:00
.gitattributes Rename config.toml.example to config.example.toml 2023-03-11 14:10:00 -08:00
.gitignore don't globally ignore rustc-ice files 2023-09-16 09:44:44 +02:00
.gitmodules refactor: add rustc-perf submodule to src/tools 2024-05-20 14:56:49 +00:00
.mailmap Rollup merge of #123873 - cuviper:mailmap, r=lqd 2024-04-13 00:18:47 -04:00
Cargo.lock Rollup merge of #125089 - Urgau:non_local_def-suggestions, r=estebank 2024-05-28 02:07:47 -07:00
Cargo.toml Remove the expand-yaml-anchors tool 2024-04-29 21:33:17 +02:00
CODE_OF_CONDUCT.md Remove the code of conduct; instead link https://www.rust-lang.org/conduct.html 2019-10-05 22:55:19 +02:00
config.example.toml Remove deprecated field dist.missing-tools 2024-05-25 10:35:07 +03:00
configure Ensure ./configure works when configure.py path contains spaces 2024-02-16 18:57:22 +00:00
CONTRIBUTING.md fix: Update CONTRIBUTING.md recommend -> recommended 2023-11-16 23:57:09 +05:30
COPYRIGHT Update COPYRIGHT file 2022-10-30 10:23:14 -04:00
INSTALL.md chore: fix some comments 2024-03-27 22:32:53 +08:00
LICENSE-APACHE Remove appendix from LICENCE-APACHE 2019-12-30 14:25:53 +00:00
LICENSE-MIT LICENSE-MIT: Remove inaccurate (misattributed) copyright notice 2017-07-26 16:51:58 -07:00
README.md Use SVG logos in the README.md. 2024-04-03 19:48:20 +02:00
RELEASES.md release notes 1.78: add link to interior-mut breaking change 2024-05-03 14:56:05 +02:00
rust-bors.toml Increase timeout for new bors bot 2024-03-13 08:31:07 +01:00
rustfmt.toml Don't format tests/run-make/*/rmake.rs. 2024-05-28 19:28:46 +10:00
triagebot.toml Rollup merge of #125566 - camelid:notify-accepted, r=GuillaumeGomez 2024-05-26 15:28:29 -07:00
x Make x capable of resolving symlinks 2023-10-14 17:53:33 +03:00
x.ps1 use & instead of start-process in x.ps1 2023-12-09 09:46:16 -05:00
x.py Fix recent python linting errors 2023-08-02 04:40:28 -04:00

This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.

Why Rust?

  • Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.

  • Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.

  • Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).

Quick Start

Read "Installation" from The Book.

Installing from Source

If you really want to install from source (though this is not recommended), see INSTALL.md.

Getting Help

See https://www.rust-lang.org/community for a list of chat platforms and forums.

Contributing

See CONTRIBUTING.md.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.

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If you want to use these names or brands, please read the media guide.

Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.