Sync rustfmt subtree 2024-01-20

[ytmimi]

r? @ghost

[1.7.0] 2023-10-22

Fixed

• Sometimes when format_code_in_doc_comments=true was set some line comments were converted to block comments #5533
• rustfmt will no longer remove the braces in match arms when the block has a labeled #5676

  fn main() {
      match true {
          true => 'a: {
              break 'a
          }
          _ => (),
      }
  }

• Calling methods on float literals ending in . will now be wrapped in parenthesis. e.g. 0. .to_string() will be formatted as (0.).to_string() #5791
• Prevent ICE when formatting empty macro_rules! branch #5730

  macro_rules! statement {
      () => {;};
  }

• Prevent ICE when formatting vec!{} #5735
• Prevent internal trailing whitespace error when formatting an empty macro_rules! defintion e.g. macro_rules! foo {} #5882
• Formatting doc comment lines that start with . or ) won't be treated as ordered markdown lists because . or ) must be preceded by a number to start an ordered markdown list #5835
• Add parenthesis around closures when they're used as method receives, don't have a block body, and end with . #4808

  fn main() {
      || (10.).method();
      (|| ..).method();
      (|| 1..).method();
  }

• Prevent removing for<T> when using the #![feature(non_lifetime_binders)] #5721

  #![feature(non_lifetime_binders)]
  #![allow(incomplete_features)]
  
  trait Other<U: ?Sized> {}
  
  trait Trait<U>
  where
      for<T> U: Other<T> {}

• Fix various issues with comments in imports #5852 #4708 #3984
• When setting version = Two newlines between where clause bounds will be removed #5655

  fn foo<T>(_: T)
  where
      T: std::fmt::Debug,
      T: std::fmt::Display,
  {
  }

• Improve formatting of let-else statements that have leading attributes When setting version = Two #5901
• Prevent comment duplication in expressions wrapped in parenthesis. #5871
• Adjust the span derivation used when rewriting const generics. The incorrect span derivation lead to invalid code after reformatting. #5935

Changed

• rustfmt no longer removes explicit Rust ABIs. e.g extern "Rust" fn im_a_rust_fn() {} #5701
• Setting trailing_semicolon = false will only remove trailing ; on the last expression in a block #5797
• Update the format of cargo help fmt to be more consistent with other standard commands #5908

Added

• Users can now set skip_macro_invocations in rustfmt.toml #5816
• Adds initial support for formatting let-chains. let-chains are still a nightly feature and their formatting is subject to change #5910. Formatting was implemented following the rules outlined in rust-lang/rust#110568

Misc

• Support the experimental dyn* syntax, enabled by #![feature(dyn_star)] #5542
• Replace unicode_categories dependency with unicode-properties #5864

[ytmimi]

This is an example of what an automated subtree-pull might look like. I'm currently working on a script we can run in the rustfmt repo that will help us automate the sync process