Tracking Issue for Rust 2024: rustfmt style editions

[traviscross]

This is a tracking issue for support for style editions in rustfmt. This is needed to support the Style Edition 2024 which is expected to be released with Rust 2024.

About tracking issues

Tracking issues are used to record the overall progress of implementation. They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions. A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature. Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.

Steps

• Implement in nightly Rust 2024.
  • implement Style Edition support rustfmt#6247
  • Stabilize style_edition = "2024" in-tree #134929
• Add documentation to the edition guide.
  • 2024: rustfmt style edition edition-guide#331
• Add formatting for new syntax to the style guide.
  • See the nightly style procedure.
• Ensure ready for Rust 2024 stabilization.

Unresolved Questions

None.

Related

• Add StyleEdition enum and StyleEditionDefault trait rustfmt#5933
• Impl StyleEditionDefault trait for all configs rustfmt#5937
• implement Style Edition support rustfmt#6247

cc @rust-lang/rustfmt @rust-lang/style @calebcartwright

[ytmimi]

You can also add rust-lang/rustfmt#5933 to the implementation history

[calebcartwright]

note from today's t-style meet: use this one in the edition guide to provide additional/broader context around the style edition impacts, stability policy, etc. so that it doesn't needed to be repeated in other edition sections