rust-lang · bors · Jun 25, 2022 · Jun 13, 2022 · Jun 13, 2022 · Jun 13, 2022
diff --git a/Cargo.lock b/Cargo.lock
@@ -4698,7 +4698,7 @@ dependencies = [
 
 [[package]]
 name = "rustfmt-nightly"
-version = "1.5.0"
+version = "1.5.1"
 dependencies = [
  "annotate-snippets 0.9.1",
  "anyhow",

diff --git a/src/tools/rustfmt/.github/workflows/linux.yml b/src/tools/rustfmt/.github/workflows/linux.yml
@@ -35,15 +35,5 @@ jobs:
         sh rustup-init.sh -y --default-toolchain none
         rustup target add ${{ matrix.target }}
 
-    - name: build
-      run: |
-        rustc -Vv
-        cargo -V
-        cargo build
-      env:
-        RUSTFLAGS: '-D warnings'
-
-    - name: test
-      run: cargo test
-      env:
-        RUSTFLAGS: '-D warnings'
+    - name: Build and Test
+      run: ./ci/build_and_test.sh
diff --git a/src/tools/rustfmt/.github/workflows/mac.yml b/src/tools/rustfmt/.github/workflows/mac.yml
@@ -32,11 +32,5 @@ jobs:
         sh rustup-init.sh -y --default-toolchain none
         rustup target add ${{ matrix.target }}
 
-    - name: build
-      run: |
-        rustc -Vv
-        cargo -V
-        cargo build
-
-    - name: test
-      run: cargo test
+    - name: Build and Test
+      run: ./ci/build_and_test.sh
diff --git a/src/tools/rustfmt/.github/workflows/windows.yml b/src/tools/rustfmt/.github/workflows/windows.yml
@@ -57,13 +57,6 @@ jobs:
       if: matrix.target == 'x86_64-pc-windows-gnu' && matrix.channel == 'nightly'
       shell: bash
 
-    - name: build
-      run: |
-        rustc -Vv
-        cargo -V
-        cargo build
-      shell: cmd
-
-    - name: test
-      run: cargo test
+    - name: Build and Test
       shell: cmd
+      run: ci\build_and_test.bat
diff --git a/src/tools/rustfmt/CHANGELOG.md b/src/tools/rustfmt/CHANGELOG.md
@@ -2,7 +2,29 @@
 
 ## [Unreleased]
 
-## [1.5.0] 2022-06-13
+## [1.5.1] 2022-06-24
+
+**N.B** A bug was introduced in v1.5.0/nightly-2022-06-15 which modified formatting. If you happened to run rustfmt over your code with one of those ~10 nightlies it's possible you may have seen formatting changes, and you may see additional changes after this fix since that bug has now been reverted.
+
+### Fixed
+
+- Correct an issue introduced in v1.5.0 where formatting changes were unintentionally introduced in a few cases with a large/long construct in a right hand side position (e.g. a large chain on the RHS of a local/assignment statement)
+- `cargo fmt --version` properly displays the version value again [#5395](https://github.com/rust-lang/rustfmt/issues/5395)
+
+### Changed
+
+- Properly sort imports containing raw identifiers [#3791](https://github.com/rust-lang/rustfmt/issues/3791) (note this is change version gated, and not applied by default)
+
+### Added
+
+- Add new configuration option, `doc_comment_code_block_width`, which allows for setting a shorter width limit to use for formatting code snippets in doc comments [#5384](https://github.com/rust-lang/rustfmt/issues/5384)
+
+### Install/Download Options
+- **rustup (nightly)** - nightly-2022-06-24
+- **GitHub Release Binaries** - [Release v1.5.1](https://github.com/rust-lang/rustfmt/releases/tag/v1.5.0)
+- **Build from source** - [Tag v1.5.1](https://github.com/rust-lang/rustfmt/tree/v1.5.1), see instructions for how to [install rustfmt from source][install-from-source]
+
+## [1.5.0] 2022-06-14
 
 ### Changed
 
@@ -75,7 +97,7 @@
 - Improved performance when formatting large and deeply nested expression trees, often found in generated code, which have many expressions that exceed `max_width` [#5128](https://github.com/rust-lang/rustfmt/issues/5128), [#4867](https://github.com/rust-lang/rustfmt/issues/4867), [#4476](https://github.com/rust-lang/rustfmt/issues/4476), [#5139](https://github.com/rust-lang/rustfmt/pull/5139)
 
 ### Install/Download Options
-- **rustup (nightly)** - *pending*
+- **rustup (nightly)** - nightly-2022-06-15
 - **GitHub Release Binaries** - [Release v1.5.0](https://github.com/rust-lang/rustfmt/releases/tag/v1.5.0)
 - **Build from source** - [Tag v1.5.0](https://github.com/rust-lang/rustfmt/tree/v1.5.0), see instructions for how to [install rustfmt from source][install-from-source]
 

diff --git a/src/tools/rustfmt/Cargo.lock b/src/tools/rustfmt/Cargo.lock
@@ -485,7 +485,7 @@ dependencies = [
 
 [[package]]
 name = "rustfmt-nightly"
-version = "1.5.0"
+version = "1.5.1"
 dependencies = [
  "annotate-snippets",
  "anyhow",

diff --git a/src/tools/rustfmt/Cargo.toml b/src/tools/rustfmt/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "rustfmt-nightly"
-version = "1.5.0"
+version = "1.5.1"
 description = "Tool to find and fix Rust formatting issues"
 repository = "https://github.com/rust-lang/rustfmt"
 readme = "README.md"
@@ -65,3 +65,7 @@ rustfmt-config_proc_macro = { version = "0.2", path = "config_proc_macro" }
 rustc-workspace-hack = "1.0.0"
 
 # Rustc dependencies are loaded from the sysroot, Cargo doesn't know about them.
+
+[package.metadata.rust-analyzer]
+# This package uses #[feature(rustc_private)]
+rustc_private = true
diff --git a/src/tools/rustfmt/Configurations.md b/src/tools/rustfmt/Configurations.md
@@ -926,6 +926,14 @@ fn add_one(x: i32) -> i32 {
 }
 ```
 
+## `doc_comment_code_block_width`
+
+Max width for code snippets included in doc comments. Only used if [`format_code_in_doc_comments`](#format_code_in_doc_comments) is true.
+
+- **Default value**: `100`
+- **Possible values**: any positive integer that is less than or equal to the value specified for [`max_width`](#max_width)
+- **Stable**: No (tracking issue: [#5359](https://github.com/rust-lang/rustfmt/issues/5359))
+
 ## `format_generated_files`
 
 Format generated files. A file is considered generated

diff --git a/src/tools/rustfmt/ci/build_and_test.bat b/src/tools/rustfmt/ci/build_and_test.bat
@@ -0,0 +1,14 @@
+set "RUSTFLAGS=-D warnings"
+
+:: Print version information
+rustc -Vv || exit /b 1
+cargo -V || exit /b 1
+
+:: Build and test main crate
+cargo build --locked || exit /b 1
+cargo test || exit /b 1
+
+:: Build and test other crates
+cd config_proc_macro || exit /b 1
+cargo build --locked || exit /b 1
+cargo test || exit /b 1
diff --git a/src/tools/rustfmt/ci/build_and_test.sh b/src/tools/rustfmt/ci/build_and_test.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -euo pipefail
+
+export RUSTFLAGS="-D warnings"
+
+# Print version information
+rustc -Vv
+cargo -V
+
+# Build and test main crate
+cargo build --locked
+cargo test
+
+# Build and test other crates
+cd config_proc_macro
+cargo build --locked
+cargo test
diff --git a/src/tools/rustfmt/ci/integration.sh b/src/tools/rustfmt/ci/integration.sh
@@ -15,7 +15,7 @@ set -ex
 # it again.
 #
 #which cargo-fmt || cargo install --force
-CFG_RELEASE=nightly CFG_RELEASE_CHANNEL=nightly cargo install --path . --force
+CFG_RELEASE=nightly CFG_RELEASE_CHANNEL=nightly cargo install --path . --force --locked
 
 echo "Integration tests for: ${INTEGRATION}"
 cargo fmt -- --version

diff --git a/src/tools/rustfmt/config_proc_macro/Cargo.lock b/src/tools/rustfmt/config_proc_macro/Cargo.lock
@@ -1,68 +1,68 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e98a83a9f9b331f54b924e68a66acb1bb35cb01fb0a23645139967abefb697e8"
 dependencies = [
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid",
 ]
 
 [[package]]
 name = "quote"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 dependencies = [
- "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
 ]
 
 [[package]]
 name = "rustfmt-config_proc_macro"
-version = "0.1.2"
+version = "0.2.0"
 dependencies = [
- "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "syn",
 ]
 
 [[package]]
 name = "serde"
 version = "1.0.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fec2851eb56d010dc9a21b89ca53ee75e6528bab60c11e89d38390904982da9f"
 dependencies = [
- "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
 version = "1.0.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb4dc18c61206b08dc98216c98faa0232f4337e1e1b8574551d5bad29ea1b425"
 dependencies = [
- "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
 name = "syn"
 version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
 dependencies = [
- "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
 ]
 
 [[package]]
 name = "unicode-xid"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[metadata]
-"checksum proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e98a83a9f9b331f54b924e68a66acb1bb35cb01fb0a23645139967abefb697e8"
-"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
-"checksum serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "fec2851eb56d010dc9a21b89ca53ee75e6528bab60c11e89d38390904982da9f"
-"checksum serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "cb4dc18c61206b08dc98216c98faa0232f4337e1e1b8574551d5bad29ea1b425"
-"checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
-"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
+checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
diff --git a/src/tools/rustfmt/config_proc_macro/src/lib.rs b/src/tools/rustfmt/config_proc_macro/src/lib.rs
@@ -29,6 +29,8 @@ pub fn config_type(_args: TokenStream, input: TokenStream) -> TokenStream {
 /// Used to conditionally output the TokenStream for tests that need to be run on nightly only.
 ///
 /// ```rust
+/// # use rustfmt_config_proc_macro::nightly_only_test;
+///
 /// #[nightly_only_test]
 /// #[test]
 /// fn test_needs_nightly_rustfmt() {
@@ -49,6 +51,8 @@ pub fn nightly_only_test(_args: TokenStream, input: TokenStream) -> TokenStream
 /// Used to conditionally output the TokenStream for tests that need to be run on stable only.
 ///
 /// ```rust
+/// # use rustfmt_config_proc_macro::stable_only_test;
+///
 /// #[stable_only_test]
 /// #[test]
 /// fn test_needs_stable_rustfmt() {

diff --git a/src/tools/rustfmt/rust-toolchain b/src/tools/rustfmt/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2022-06-06"
+channel = "nightly-2022-06-21"
 components = ["rustc-dev"]
diff --git a/src/tools/rustfmt/src/cargo-fmt/main.rs b/src/tools/rustfmt/src/cargo-fmt/main.rs
@@ -14,14 +14,15 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::str;
 
-use clap::{CommandFactory, Parser};
+use clap::{AppSettings, CommandFactory, Parser};
 
 #[path = "test/mod.rs"]
 #[cfg(test)]
 mod cargo_fmt_tests;
 
 #[derive(Parser)]
 #[clap(
+    global_setting(AppSettings::NoAutoVersion),
     bin_name = "cargo fmt",
     about = "This utility formats all bin and lib files of \
              the current crate using rustfmt."

diff --git a/src/tools/rustfmt/src/comment.rs b/src/tools/rustfmt/src/comment.rs
@@ -730,6 +730,10 @@ impl<'a> CommentRewrite<'a> {
                     {
                         let mut config = self.fmt.config.clone();
                         config.set().wrap_comments(false);
+                        let comment_max_width = config
+                            .doc_comment_code_block_width()
+                            .min(config.max_width());
+                        config.set().max_width(comment_max_width);
                         if let Some(s) =
                             crate::format_code_block(&self.code_block_buffer, &config, false)
                         {

diff --git a/src/tools/rustfmt/src/config/mod.rs b/src/tools/rustfmt/src/config/mod.rs
@@ -57,6 +57,8 @@ create_config! {
     // Comments. macros, and strings
     wrap_comments: bool, false, false, "Break comments to fit on the line";
     format_code_in_doc_comments: bool, false, false, "Format the code snippet in doc comments.";
+    doc_comment_code_block_width: usize, 100, false, "Maximum width for code snippets in doc \
+        comments. No effect unless format_code_in_doc_comments = true";
     comment_width: usize, 80, false,
         "Maximum length of comments. No effect unless wrap_comments = true";
     normalize_comments: bool, false, false, "Convert /* */ comments to // comments where possible";
@@ -532,6 +534,7 @@ chain_width = 60
 single_line_if_else_max_width = 50
 wrap_comments = false
 format_code_in_doc_comments = false
+doc_comment_code_block_width = 100
 comment_width = 80
 normalize_comments = false
 normalize_doc_attributes = false