Implicit string concat formatting

.gitattributes

@@ -2,8 +2,6 @@
 
 crates/ruff_linter/resources/test/fixtures/isort/line_ending_crlf.py text eol=crlf
 crates/ruff_linter/resources/test/fixtures/pycodestyle/W605_1.py text eol=crlf
-crates/ruff_linter/resources/test/fixtures/pycodestyle/W391_2.py text eol=crlf
-crates/ruff_linter/resources/test/fixtures/pycodestyle/W391_3.py text eol=crlf
 
 crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_crlf.py text eol=crlf
 crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_crlf.py.snap text eol=crlf

.github/CODEOWNERS

@@ -7,9 +7,3 @@
 
 # Jupyter
 /crates/ruff_linter/src/jupyter/ @dhruvmanila
-/crates/ruff_formatter/ @MichaReiser
-/crates/ruff_python_formatter/ @MichaReiser
-/crates/ruff_python_parser/ @MichaReiser
-
-# flake8-pyi
-/crates/ruff_linter/src/rules/flake8_pyi/ @AlexWaygood

.github/ISSUE_TEMPLATE.md

@@ -3,8 +3,6 @@ Thank you for taking the time to report an issue! We're glad to have you involve
 
 If you're filing a bug report, please consider including the following information:
 
-* List of keywords you searched for before creating this issue. Write them down here so that others can find this issue more easily and help provide feedback.
-  e.g. "RUF001", "unused variable", "Jupyter notebook"
 * A minimal code snippet that reproduces the bug.
 * The command you invoked (e.g., `ruff /path/to/file.py --fix`), ideally including the `--isolated` flag.
 * The current Ruff settings (any relevant sections from your `pyproject.toml`).

.github/dependabot.yml

@@ -0,0 +1,21 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels: ["internal"]
+    groups:
+      actions:
+        patterns:
+          - "*"
+    ignore:
+      # The latest versions of these are not compatible with our release workflow
+      - dependency-name: "actions/upload-artifact"
+      - dependency-name: "actions/download-artifact"
+
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels: ["internal"]

.github/renovate.json5

@@ -1,60 +0,0 @@
-{
-  $schema: "https://docs.renovatebot.com/renovate-schema.json",
-  dependencyDashboard: true,
-  suppressNotifications: ["prEditedNotification"],
-  extends: ["config:recommended"],
-  labels: ["internal"],
-  schedule: ["on Monday"],
-  separateMajorMinor: false,
-  prHourlyLimit: 10,
-  enabledManagers: ["github-actions", "pre-commit", "cargo", "pep621", "npm"],
-  cargo: {
-    // See https://docs.renovatebot.com/configuration-options/#rangestrategy
-    rangeStrategy: "update-lockfile",
-  },
-  pep621: {
-    fileMatch: ["^(python|scripts)/.*pyproject\\.toml$"],
-  },
-  npm: {
-    fileMatch: ["^playground/.*package\\.json$"],
-  },
-  "pre-commit": {
-    enabled: true,
-  },
-  packageRules: [
-    {
-      // Group upload/download artifact updates, the versions are dependent
-      groupName: "Artifact GitHub Actions dependencies",
-      matchManagers: ["github-actions"],
-      matchPackagePatterns: ["actions/.*-artifact"],
-      description: "Weekly update of artifact-related GitHub Actions dependencies",
-    },
-    {
-      groupName: "pre-commit dependencies",
-      matchManagers: ["pre-commit"],
-      description: "Weekly update of pre-commit dependencies",
-    },
-    {
-      groupName: "NPM Development dependencies",
-      matchManagers: ["npm"],
-      matchDepTypes: ["devDependencies"],
-      description: "Weekly update of NPM development dependencies",
-    },
-    {
-      groupName: "Monaco",
-      matchManagers: ["npm"],
-      matchPackagePatterns: ["monaco"],
-      description: "Weekly update of the Monaco editor",
-    },
-    {
-      groupName: "strum",
-      matchManagers: ["cargo"],
-      matchPackagePatterns: ["strum"],
-      description: "Weekly update of strum dependencies",
-    },
-  ],
-  vulnerabilityAlerts: {
-    commitMessageSuffix: "",
-    labels: ["internal", "security"],
-  },
-}

.github/workflows/ci.yaml

@@ -35,7 +35,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: tj-actions/changed-files@v44
+      - uses: tj-actions/changed-files@v42
         id: changed
         with:
           files_yaml: |
@@ -133,7 +133,7 @@ jobs:
         env:
           # Setting RUSTDOCFLAGS because `cargo doc --check` isn't yet implemented (https://github.com/rust-lang/cargo/issues/10025).
           RUSTDOCFLAGS: "-D warnings"
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v3
         with:
           name: ruff
           path: target/debug/ruff
@@ -238,7 +238,7 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v3
         name: Download comparison Ruff binary
         id: ruff-target
         with:
@@ -250,7 +250,6 @@ jobs:
         with:
           name: ruff
           branch: ${{ github.event.pull_request.base.ref }}
-          workflow: "ci.yaml"
           check_artifacts: true
 
       - name: Install ruff-ecosystem
@@ -325,13 +324,13 @@ jobs:
         run: |
           echo ${{ github.event.number }} > pr-number
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v3
         name: Upload PR Number
         with:
           name: pr-number
           path: pr-number
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v3
         name: Upload Results
         with:
           name: ecosystem-result
@@ -472,7 +471,7 @@ jobs:
       - determine_changes
     if: ${{ needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main' }}
     steps:
-      - uses: extractions/setup-just@v2
+      - uses: extractions/setup-just@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -485,7 +484,7 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v3
         name: Download development ruff binary
         id: ruff-target
         with:

.github/workflows/release.yaml

@@ -52,9 +52,9 @@ jobs:
           ruff --help
           python -m ruff --help
       - name: "Upload sdist"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-sdist
+          name: wheels
           path: dist
 
   macos-x86_64:
@@ -80,9 +80,9 @@ jobs:
           ruff --help
           python -m ruff --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-macos-x86_64
+          name: wheels
           path: dist
       - name: "Archive binary"
         run: |
@@ -90,9 +90,9 @@ jobs:
           tar czvf $ARCHIVE_FILE -C target/x86_64-apple-darwin/release ruff
           shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-macos-x86_64
+          name: binaries
           path: |
             *.tar.gz
             *.sha256
@@ -119,9 +119,9 @@ jobs:
           ruff --help
           python -m ruff --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-aarch64-apple-darwin
+          name: wheels
           path: dist
       - name: "Archive binary"
         run: |
@@ -129,9 +129,9 @@ jobs:
           tar czvf $ARCHIVE_FILE -C target/aarch64-apple-darwin/release ruff
           shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-aarch64-apple-darwin
+          name: binaries
           path: |
             *.tar.gz
             *.sha256
@@ -170,9 +170,9 @@ jobs:
           ruff --help
           python -m ruff --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-${{ matrix.platform.target }}
+          name: wheels
           path: dist
       - name: "Archive binary"
         shell: bash
@@ -181,9 +181,9 @@ jobs:
           7z a $ARCHIVE_FILE ./target/${{ matrix.platform.target }}/release/ruff.exe
           sha256sum $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-${{ matrix.platform.target }}
+          name: binaries
           path: |
             *.zip
             *.sha256
@@ -218,9 +218,9 @@ jobs:
           ruff --help
           python -m ruff --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-${{ matrix.target }}
+          name: wheels
           path: dist
       - name: "Archive binary"
         run: |
@@ -228,9 +228,9 @@ jobs:
           tar czvf $ARCHIVE_FILE -C target/${{ matrix.target }}/release ruff
           shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-${{ matrix.target }}
+          name: binaries
           path: |
             *.tar.gz
             *.sha256
@@ -251,12 +251,8 @@ jobs:
             arch: s390x
           - target: powerpc64le-unknown-linux-gnu
             arch: ppc64le
-            # see https://github.com/astral-sh/ruff/issues/10073
-            maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
           - target: powerpc64-unknown-linux-gnu
             arch: ppc64
-            # see https://github.com/astral-sh/ruff/issues/10073
-            maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
 
     steps:
       - uses: actions/checkout@v4
@@ -289,9 +285,9 @@ jobs:
             pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
             ruff --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-${{ matrix.platform.target }}
+          name: wheels
           path: dist
       - name: "Archive binary"
         run: |
@@ -299,9 +295,9 @@ jobs:
           tar czvf $ARCHIVE_FILE -C target/${{ matrix.platform.target }}/release ruff
           shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-${{ matrix.platform.target }}
+          name: binaries
           path: |
             *.tar.gz
             *.sha256
@@ -341,9 +337,9 @@ jobs:
             .venv/bin/pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
             .venv/bin/ruff check --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-${{ matrix.target }}
+          name: wheels
           path: dist
       - name: "Archive binary"
         run: |
@@ -351,9 +347,9 @@ jobs:
           tar czvf $ARCHIVE_FILE -C target/${{ matrix.target }}/release ruff
           shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-${{ matrix.target }}
+          name: binaries
           path: |
             *.tar.gz
             *.sha256
@@ -398,9 +394,9 @@ jobs:
             .venv/bin/pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
             .venv/bin/ruff check --help
       - name: "Upload wheels"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: wheels-${{ matrix.platform.target }}
+          name: wheels
           path: dist
       - name: "Archive binary"
         run: |
@@ -408,9 +404,9 @@ jobs:
           tar czvf $ARCHIVE_FILE -C target/${{ matrix.platform.target }}/release ruff
           shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
       - name: "Upload binary"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
-          name: binaries-${{ matrix.platform.target }}
+          name: binaries
           path: |
             *.tar.gz
             *.sha256
@@ -467,11 +463,10 @@ jobs:
       # For pypi trusted publishing
       id-token: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v3
         with:
-          pattern: wheels-*
+          name: wheels
           path: wheels
-          merge-multiple: true
       - name: Publish to PyPi
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
@@ -511,13 +506,12 @@ jobs:
       # For GitHub release publishing
       contents: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v3
         with:
-          pattern: binaries-*
+          name: binaries
           path: binaries
-          merge-multiple: true
       - name: "Publish to GitHub"
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v1
         with:
           draft: true
           files: binaries/*

.gitignore

@@ -92,7 +92,6 @@ coverage.xml
 .hypothesis/
 .pytest_cache/
 cover/
-repos/
 
 # Translations
 *.mo

BREAKING_CHANGES.md

@@ -1,56 +1,5 @@
 # Breaking Changes
 
-## 0.3.0
-
-### Ruff 2024.2 style
-
-The formatter now formats code according to the Ruff 2024.2 style guide. Read the [changelog](./CHANGELOG.md#030) for a detailed list of stabilized style changes.
-
-### `isort`: Use one blank line after imports in typing stub files ([#9971](https://github.com/astral-sh/ruff/pull/9971))
-
-Previously, Ruff used one or two blank lines (or the number configured by `isort.lines-after-imports`) after imports in typing stub files (`.pyi` files).
-The [typing style guide for stubs](https://typing.readthedocs.io/en/latest/source/stubs.html#style-guide) recommends using at most 1 blank line for grouping.
-As of this release, `isort` now always uses one blank line after imports in stub files, the same as the formatter.
-
-### `build` is no longer excluded by default ([#10093](https://github.com/astral-sh/ruff/pull/10093))
-
-Ruff maintains a list of directories and files that are excluded by default. This list now consists of the following patterns:
-
-- `.bzr`
-- `.direnv`
-- `.eggs`
-- `.git`
-- `.git-rewrite`
-- `.hg`
-- `.ipynb_checkpoints`
-- `.mypy_cache`
-- `.nox`
-- `.pants.d`
-- `.pyenv`
-- `.pytest_cache`
-- `.pytype`
-- `.ruff_cache`
-- `.svn`
-- `.tox`
-- `.venv`
-- `.vscode`
-- `__pypackages__`
-- `_build`
-- `buck-out`
-- `dist`
-- `node_modules`
-- `site-packages`
-- `venv`
-
-Previously, the `build` directory was included in this list. However, the `build` directory tends to be a not-unpopular directory
-name, and excluding it by default caused confusion. Ruff now no longer excludes `build` except if it is excluded by a `.gitignore` file
-or because it is listed in `extend-exclude`.
-
-### `--format` is no longer a valid `rule` or `linter` command option
-
-Previously, `ruff rule` and `ruff linter` accepted the `--format <FORMAT>` option as an alias for `--output-format`. Ruff no longer
-supports this alias. Please use `ruff rule --output-format <FORMAT>` and `ruff linter --output-format <FORMAT>` instead.
-
 ## 0.1.9
 
 ### `site-packages` is now excluded by default ([#5513](https://github.com/astral-sh/ruff/pull/5513))

CHANGELOG.md

@@ -1,314 +1,5 @@
 # Changelog
 
-## 0.3.5
-
-### Preview features
-
-- \[`pylint`\] Implement `modified-iterating-set` (`E4703`) ([#10473](https://github.com/astral-sh/ruff/pull/10473))
-- \[`refurb`\] Implement `for-loop-set-mutations` (`FURB142`) ([#10583](https://github.com/astral-sh/ruff/pull/10583))
-- \[`refurb`\] Implement `unnecessary-from-float` (`FURB164`) ([#10647](https://github.com/astral-sh/ruff/pull/10647))
-- \[`refurb`\] Implement `verbose-decimal-constructor` (`FURB157`) ([#10533](https://github.com/astral-sh/ruff/pull/10533))
-
-### Rule changes
-
-- \[`flake8-comprehensions`\] Handled special case for `C401` which also matches `C416` ([#10596](https://github.com/astral-sh/ruff/pull/10596))
-- \[`flake8-pyi`\] Mark `unaliased-collections-abc-set-import` fix as "safe" for more cases in stub files (`PYI025`) ([#10547](https://github.com/astral-sh/ruff/pull/10547))
-- \[`numpy`\] Add `row_stack` to NumPy 2.0 migration rule ([#10646](https://github.com/astral-sh/ruff/pull/10646))
-- \[`pycodestyle`\] Allow cell magics before an import (`E402`) ([#10545](https://github.com/astral-sh/ruff/pull/10545))
-- \[`pycodestyle`\] Avoid blank line rules for the first logical line in cell ([#10291](https://github.com/astral-sh/ruff/pull/10291))
-
-### Configuration
-
-- Respected nested namespace packages ([#10541](https://github.com/astral-sh/ruff/pull/10541))
-- \[`flake8-boolean-trap`\] Add setting for user defined allowed boolean trap ([#10531](https://github.com/astral-sh/ruff/pull/10531))
-
-### Bug fixes
-
-- Correctly handle references in `__all__` definitions when renaming symbols in autofixes ([#10527](https://github.com/astral-sh/ruff/pull/10527))
-- Track ranges of names inside `__all__` definitions ([#10525](https://github.com/astral-sh/ruff/pull/10525))
-- \[`flake8-bugbear`\] Avoid false positive for usage after `continue` (`B031`) ([#10539](https://github.com/astral-sh/ruff/pull/10539))
-- \[`flake8-copyright`\] Accept commas in default copyright pattern ([#9498](https://github.com/astral-sh/ruff/pull/9498))
-- \[`flake8-datetimez`\] Allow f-strings with `%z` for `DTZ007` ([#10651](https://github.com/astral-sh/ruff/pull/10651))
-- \[`flake8-pytest-style`\] Fix `PT014` autofix for last item in list ([#10532](https://github.com/astral-sh/ruff/pull/10532))
-- \[`flake8-quotes`\] Ignore `Q000`, `Q001` when string is inside forward ref ([#10585](https://github.com/astral-sh/ruff/pull/10585))
-- \[`isort`\] Always place non-relative imports after relative imports ([#10669](https://github.com/astral-sh/ruff/pull/10669))
-- \[`isort`\] Respect Unicode characters in import sorting ([#10529](https://github.com/astral-sh/ruff/pull/10529))
-- \[`pyflakes`\] Fix F821 false negatives when `from __future__ import annotations` is active (attempt 2) ([#10524](https://github.com/astral-sh/ruff/pull/10524))
-- \[`pyflakes`\] Make `unnecessary-lambda` an always-unsafe fix ([#10668](https://github.com/astral-sh/ruff/pull/10668))
-- \[`pylint`\] Fixed false-positive on the rule `PLW1641` (`eq-without-hash`) ([#10566](https://github.com/astral-sh/ruff/pull/10566))
-- \[`ruff`\] Fix panic in unused `# noqa` removal with multi-byte space (`RUF100`) ([#10682](https://github.com/astral-sh/ruff/pull/10682))
-
-### Documentation
-
-- Add PR title format to `CONTRIBUTING.md` ([#10665](https://github.com/astral-sh/ruff/pull/10665))
-- Fix list markup to include blank lines required ([#10591](https://github.com/astral-sh/ruff/pull/10591))
-- Put `flake8-logging` next to the other flake8 plugins in registry ([#10587](https://github.com/astral-sh/ruff/pull/10587))
-- \[`flake8-bandit`\] Update warning message for rule `S305` to address insecure block cipher mode use ([#10602](https://github.com/astral-sh/ruff/pull/10602))
-- \[`flake8-bugbear`\] Document use of anonymous assignment in `useless-expression` ([#10551](https://github.com/astral-sh/ruff/pull/10551))
-- \[`flake8-datetimez`\] Clarify error messages and docs for `DTZ` rules ([#10621](https://github.com/astral-sh/ruff/pull/10621))
-- \[`pycodestyle`\] Use same before vs. after numbers for `space-around-operator` ([#10640](https://github.com/astral-sh/ruff/pull/10640))
-- \[`ruff`\] Change `quadratic-list-summation` docs to use `iadd` consistently ([#10666](https://github.com/astral-sh/ruff/pull/10666))
-
-## 0.3.4
-
-### Preview features
-
-- \[`flake8-simplify`\] Detect implicit `else` cases in `needless-bool` (`SIM103`) ([#10414](https://github.com/astral-sh/ruff/pull/10414))
-- \[`pylint`\] Implement `nan-comparison` (`PLW0117`) ([#10401](https://github.com/astral-sh/ruff/pull/10401))
-- \[`pylint`\] Implement `nonlocal-and-global` (`E115`) ([#10407](https://github.com/astral-sh/ruff/pull/10407))
-- \[`pylint`\] Implement `singledispatchmethod-function` (`PLE5120`) ([#10428](https://github.com/astral-sh/ruff/pull/10428))
-- \[`refurb`\] Implement `list-reverse-copy` (`FURB187`) ([#10212](https://github.com/astral-sh/ruff/pull/10212))
-
-### Rule changes
-
-- \[`flake8-pytest-style`\] Add automatic fix for `pytest-parametrize-values-wrong-type` (`PT007`) ([#10461](https://github.com/astral-sh/ruff/pull/10461))
-- \[`pycodestyle`\] Allow SPDX license headers to exceed the line length (`E501`) ([#10481](https://github.com/astral-sh/ruff/pull/10481))
-
-### Formatter
-
-- Fix unstable formatting for trailing subscript end-of-line comment ([#10492](https://github.com/astral-sh/ruff/pull/10492))
-
-### Bug fixes
-
-- Avoid code comment detection in PEP 723 script tags ([#10464](https://github.com/astral-sh/ruff/pull/10464))
-- Avoid incorrect tuple transformation in single-element case (`C409`) ([#10491](https://github.com/astral-sh/ruff/pull/10491))
-- Bug fix: Prevent fully defined links [`name`](link) from being reformatted ([#10442](https://github.com/astral-sh/ruff/pull/10442))
-- Consider raw source code for `W605` ([#10480](https://github.com/astral-sh/ruff/pull/10480))
-- Docs: Link inline settings when not part of options section ([#10499](https://github.com/astral-sh/ruff/pull/10499))
-- Don't treat annotations as redefinitions in `.pyi` files ([#10512](https://github.com/astral-sh/ruff/pull/10512))
-- Fix `E231` bug: Inconsistent catch compared to pycodestyle, such as when dict nested in list ([#10469](https://github.com/astral-sh/ruff/pull/10469))
-- Fix pylint upstream categories not showing in docs ([#10441](https://github.com/astral-sh/ruff/pull/10441))
-- Add missing `Options` references to blank line docs ([#10498](https://github.com/astral-sh/ruff/pull/10498))
-- 'Revert "F821: Fix false negatives in .py files when `from __future__ import annotations` is active (#10362)"' ([#10513](https://github.com/astral-sh/ruff/pull/10513))
-- Apply NFKC normalization to unicode identifiers in the lexer ([#10412](https://github.com/astral-sh/ruff/pull/10412))
-- Avoid failures due to non-deterministic binding ordering ([#10478](https://github.com/astral-sh/ruff/pull/10478))
-- \[`flake8-bugbear`\] Allow tuples of exceptions (`B030`) ([#10437](https://github.com/astral-sh/ruff/pull/10437))
-- \[`flake8-quotes`\] Avoid syntax errors due to invalid quotes (`Q000, Q002`) ([#10199](https://github.com/astral-sh/ruff/pull/10199))
-
-## 0.3.3
-
-### Preview features
-
-- \[`flake8-bandit`\]: Implement `S610` rule ([#10316](https://github.com/astral-sh/ruff/pull/10316))
-- \[`pycodestyle`\] Implement `blank-line-at-end-of-file` (`W391`) ([#10243](https://github.com/astral-sh/ruff/pull/10243))
-- \[`pycodestyle`\] Implement `redundant-backslash` (`E502`) ([#10292](https://github.com/astral-sh/ruff/pull/10292))
-- \[`pylint`\] - implement `redeclared-assigned-name` (`W0128`) ([#9268](https://github.com/astral-sh/ruff/pull/9268))
-
-### Rule changes
-
-- \[`flake8_comprehensions`\] Handled special case for `C400` which also matches `C416` ([#10419](https://github.com/astral-sh/ruff/pull/10419))
-- \[`flake8-bandit`\] Implement upstream updates for `S311`, `S324` and `S605` ([#10313](https://github.com/astral-sh/ruff/pull/10313))
-- \[`pyflakes`\] Remove `F401` fix for `__init__` imports by default and allow opt-in to unsafe fix ([#10365](https://github.com/astral-sh/ruff/pull/10365))
-- \[`pylint`\] Implement `invalid-bool-return-type` (`E304`) ([#10377](https://github.com/astral-sh/ruff/pull/10377))
-- \[`pylint`\] Include builtin warnings in useless-exception-statement (`PLW0133`) ([#10394](https://github.com/astral-sh/ruff/pull/10394))
-
-### CLI
-
-- Add message on success to `ruff check` ([#8631](https://github.com/astral-sh/ruff/pull/8631))
-
-### Bug fixes
-
-- \[`PIE970`\] Allow trailing ellipsis in `typing.TYPE_CHECKING` ([#10413](https://github.com/astral-sh/ruff/pull/10413))
-- Avoid `TRIO115` if the argument is a variable ([#10376](https://github.com/astral-sh/ruff/pull/10376))
-- \[`F811`\] Avoid removing shadowed imports that point to different symbols ([#10387](https://github.com/astral-sh/ruff/pull/10387))
-- Fix `F821` and `F822` false positives in `.pyi` files ([#10341](https://github.com/astral-sh/ruff/pull/10341))
-- Fix `F821` false negatives in `.py` files when `from __future__ import annotations` is active ([#10362](https://github.com/astral-sh/ruff/pull/10362))
-- Fix case where `Indexer` fails to identify continuation preceded by newline #10351 ([#10354](https://github.com/astral-sh/ruff/pull/10354))
-- Sort hash maps in `Settings` display ([#10370](https://github.com/astral-sh/ruff/pull/10370))
-- Track conditional deletions in the semantic model ([#10415](https://github.com/astral-sh/ruff/pull/10415))
-- \[`C413`\] Wrap expressions in parentheses when negating ([#10346](https://github.com/astral-sh/ruff/pull/10346))
-- \[`pycodestyle`\] Do not ignore lines before the first logical line in blank lines rules. ([#10382](https://github.com/astral-sh/ruff/pull/10382))
-- \[`pycodestyle`\] Do not trigger `E225` and `E275` when the next token is a ')' ([#10315](https://github.com/astral-sh/ruff/pull/10315))
-- \[`pylint`\] Avoid false-positive slot non-assignment for `__dict__` (`PLE0237`) ([#10348](https://github.com/astral-sh/ruff/pull/10348))
-- Gate f-string struct size test for Rustc \< 1.76 ([#10371](https://github.com/astral-sh/ruff/pull/10371))
-
-### Documentation
-
-- Use `ruff.toml` format in README ([#10393](https://github.com/astral-sh/ruff/pull/10393))
-- \[`RUF008`\] Make it clearer that a mutable default in a dataclass is only valid if it is typed as a ClassVar ([#10395](https://github.com/astral-sh/ruff/pull/10395))
-- \[`pylint`\] Extend docs and test in `invalid-str-return-type` (`E307`) ([#10400](https://github.com/astral-sh/ruff/pull/10400))
-- Remove `.` from `check` and `format` commands ([#10217](https://github.com/astral-sh/ruff/pull/10217))
-
-## 0.3.2
-
-### Preview features
-
-- Improve single-`with` item formatting for Python 3.8 or older ([#10276](https://github.com/astral-sh/ruff/pull/10276))
-
-### Rule changes
-
-- \[`pyupgrade`\] Allow fixes for f-string rule regardless of line length (`UP032`) ([#10263](https://github.com/astral-sh/ruff/pull/10263))
-- \[`pycodestyle`\] Include actual conditions in E712 diagnostics ([#10254](https://github.com/astral-sh/ruff/pull/10254))
-
-### Bug fixes
-
-- Fix trailing kwargs end of line comment after slash ([#10297](https://github.com/astral-sh/ruff/pull/10297))
-- Fix unstable `with` items formatting ([#10274](https://github.com/astral-sh/ruff/pull/10274))
-- Avoid repeating function calls in f-string conversions ([#10265](https://github.com/astral-sh/ruff/pull/10265))
-- Fix E203 false positive for slices in format strings ([#10280](https://github.com/astral-sh/ruff/pull/10280))
-- Fix incorrect `Parameter` range for `*args` and `**kwargs` ([#10283](https://github.com/astral-sh/ruff/pull/10283))
-- Treat `typing.Annotated` subscripts as type definitions ([#10285](https://github.com/astral-sh/ruff/pull/10285))
-
-## 0.3.1
-
-### Preview features
-
-- \[`pycodestyle`\] Fix E301 not triggering on decorated methods. ([#10117](https://github.com/astral-sh/ruff/pull/10117))
-- \[`pycodestyle`\] Respect `isort` settings in blank line rules (`E3*`) ([#10096](https://github.com/astral-sh/ruff/pull/10096))
-- \[`pycodestyle`\] Make blank lines in typing stub files optional (`E3*`) ([#10098](https://github.com/astral-sh/ruff/pull/10098))
-- \[`pylint`\] Implement `singledispatch-method` (`E1519`) ([#10140](https://github.com/astral-sh/ruff/pull/10140))
-- \[`pylint`\] Implement `useless-exception-statement` (`W0133`) ([#10176](https://github.com/astral-sh/ruff/pull/10176))
-
-### Rule changes
-
-- \[`flake8-debugger`\] Check for use of `debugpy` and `ptvsd` debug modules (#10177) ([#10194](https://github.com/astral-sh/ruff/pull/10194))
-- \[`pyupgrade`\] Generate diagnostic for all valid f-string conversions regardless of line length (`UP032`) ([#10238](https://github.com/astral-sh/ruff/pull/10238))
-- \[`pep8_naming`\] Add fixes for `N804` and `N805` ([#10215](https://github.com/astral-sh/ruff/pull/10215))
-
-### CLI
-
-- Colorize the output of `ruff format --diff` ([#10110](https://github.com/astral-sh/ruff/pull/10110))
-- Make `--config` and `--isolated` global flags ([#10150](https://github.com/astral-sh/ruff/pull/10150))
-- Correctly expand tildes and environment variables in paths passed to `--config` ([#10219](https://github.com/astral-sh/ruff/pull/10219))
-
-### Configuration
-
-- Accept a PEP 440 version specifier for `required-version` ([#10216](https://github.com/astral-sh/ruff/pull/10216))
-- Implement isort's `default-section` setting ([#10149](https://github.com/astral-sh/ruff/pull/10149))
-
-### Bug fixes
-
-- Remove trailing space from `CapWords` message ([#10220](https://github.com/astral-sh/ruff/pull/10220))
-- Respect external codes in file-level exemptions ([#10203](https://github.com/astral-sh/ruff/pull/10203))
-- \[`flake8-raise`\] Avoid false-positives for parens-on-raise with `future.exception()` (`RSE102`) ([#10206](https://github.com/astral-sh/ruff/pull/10206))
-- \[`pylint`\] Add fix for unary expressions in `PLC2801` ([#9587](https://github.com/astral-sh/ruff/pull/9587))
-- \[`ruff`\] Fix RUF028 not allowing `# fmt: skip` on match cases ([#10178](https://github.com/astral-sh/ruff/pull/10178))
-
-## 0.3.0
-
-This release introduces the new Ruff formatter 2024.2 style and adds a new lint rule to
-detect invalid formatter suppression comments.
-
-### Preview features
-
-- \[`flake8-bandit`\] Remove suspicious-lxml-import (`S410`) ([#10154](https://github.com/astral-sh/ruff/pull/10154))
-- \[`pycodestyle`\] Allow `os.environ` modifications between imports (`E402`) ([#10066](https://github.com/astral-sh/ruff/pull/10066))
-- \[`pycodestyle`\] Don't warn about a single whitespace character before a comma in a tuple (`E203`) ([#10094](https://github.com/astral-sh/ruff/pull/10094))
-
-### Rule changes
-
-- \[`eradicate`\] Detect commented out `case` statements (`ERA001`) ([#10055](https://github.com/astral-sh/ruff/pull/10055))
-- \[`eradicate`\] Detect single-line code for `try:`, `except:`, etc. (`ERA001`) ([#10057](https://github.com/astral-sh/ruff/pull/10057))
-- \[`flake8-boolean-trap`\] Allow boolean positionals in `__post_init__` ([#10027](https://github.com/astral-sh/ruff/pull/10027))
-- \[`flake8-copyright`\] Allow © in copyright notices ([#10065](https://github.com/astral-sh/ruff/pull/10065))
-- \[`isort`\]: Use one blank line after imports in typing stub files ([#9971](https://github.com/astral-sh/ruff/pull/9971))
-- \[`pylint`\] New Rule `dict-iter-missing-items` (`PLE1141`) ([#9845](https://github.com/astral-sh/ruff/pull/9845))
-- \[`pylint`\] Ignore `sys.version` and `sys.platform` (`PLR1714`) ([#10054](https://github.com/astral-sh/ruff/pull/10054))
-- \[`pyupgrade`\] Detect literals with unary operators (`UP018`) ([#10060](https://github.com/astral-sh/ruff/pull/10060))
-- \[`ruff`\] Expand rule for `list(iterable).pop(0)` idiom (`RUF015`) ([#10148](https://github.com/astral-sh/ruff/pull/10148))
-
-### Formatter
-
-This release introduces the Ruff 2024.2 style, stabilizing the following changes:
-
-- Prefer splitting the assignment's value over the target or type annotation ([#8943](https://github.com/astral-sh/ruff/pull/8943))
-- Remove blank lines before class docstrings ([#9154](https://github.com/astral-sh/ruff/pull/9154))
-- Wrap multiple context managers in `with` parentheses when targeting Python 3.9 or newer ([#9222](https://github.com/astral-sh/ruff/pull/9222))
-- Add a blank line after nested classes with a dummy body (`...`) in typing stub files ([#9155](https://github.com/astral-sh/ruff/pull/9155))
-- Reduce vertical spacing for classes and functions with a dummy (`...`) body ([#7440](https://github.com/astral-sh/ruff/issues/7440), [#9240](https://github.com/astral-sh/ruff/pull/9240))
-- Add a blank line after the module docstring ([#8283](https://github.com/astral-sh/ruff/pull/8283))
-- Parenthesize long type hints in assignments ([#9210](https://github.com/astral-sh/ruff/pull/9210))
-- Preserve indent for single multiline-string call-expressions ([#9673](https://github.com/astral-sh/ruff/pull/9637))
-- Normalize hex escape and unicode escape sequences ([#9280](https://github.com/astral-sh/ruff/pull/9280))
-- Format module docstrings ([#9725](https://github.com/astral-sh/ruff/pull/9725))
-
-### CLI
-
-- Explicitly disallow `extend` as part of a `--config` flag ([#10135](https://github.com/astral-sh/ruff/pull/10135))
-- Remove `build` from the default exclusion list ([#10093](https://github.com/astral-sh/ruff/pull/10093))
-- Deprecate `ruff <path>`, `ruff --explain`, `ruff --clean`, and `ruff --generate-shell-completion` in favor of `ruff check <path>`, `ruff rule`, `ruff clean`, and `ruff generate-shell-completion` ([#10169](https://github.com/astral-sh/ruff/pull/10169))
-- Remove the deprecated CLI option `--format` from `ruff rule` and `ruff linter` ([#10170](https://github.com/astral-sh/ruff/pull/10170))
-
-### Bug fixes
-
-- \[`flake8-bugbear`\] Avoid adding default initializers to stubs (`B006`) ([#10152](https://github.com/astral-sh/ruff/pull/10152))
-- \[`flake8-type-checking`\] Respect runtime-required decorators for function signatures ([#10091](https://github.com/astral-sh/ruff/pull/10091))
-- \[`pycodestyle`\] Mark fixes overlapping with a multiline string as unsafe (`W293`) ([#10049](https://github.com/astral-sh/ruff/pull/10049))
-- \[`pydocstyle`\] Trim whitespace when removing blank lines after section (`D413`) ([#10162](https://github.com/astral-sh/ruff/pull/10162))
-- \[`pylint`\] Delete entire statement, including semicolons (`PLR0203`) ([#10074](https://github.com/astral-sh/ruff/pull/10074))
-- \[`ruff`\] Avoid f-string false positives in `gettext` calls (`RUF027`) ([#10118](https://github.com/astral-sh/ruff/pull/10118))
-- Fix `ruff` crashing on PowerPC systems because of too small page size ([#10080](https://github.com/astral-sh/ruff/pull/10080))
-
-### Performance
-
-- Add cold attribute to less likely printer queue branches in the formatter ([#10121](https://github.com/astral-sh/ruff/pull/10121))
-- Skip unnecessary string normalization in the formatter ([#10116](https://github.com/astral-sh/ruff/pull/10116))
-
-### Documentation
-
-- Remove "Beta" Label from formatter documentation ([#10144](https://github.com/astral-sh/ruff/pull/10144))
-- `line-length` option: fix link to `pycodestyle.max-line-length` ([#10136](https://github.com/astral-sh/ruff/pull/10136))
-
-## 0.2.2
-
-Highlights include:
-
-- Initial support formatting f-strings (in `--preview`).
-- Support for overriding arbitrary configuration options via the CLI through an expanded `--config` argument (e.g., `--config "lint.isort.combine-as-imports=false"`).
-- Significant performance improvements in Ruff's lexer, parser, and lint rules.
-
-### Preview features
-
-- Implement minimal f-string formatting ([#9642](https://github.com/astral-sh/ruff/pull/9642))
-- \[`pycodestyle`\] Add blank line(s) rules (`E301`, `E302`, `E303`, `E304`, `E305`, `E306`) ([#9266](https://github.com/astral-sh/ruff/pull/9266))
-- \[`refurb`\] Implement `readlines_in_for` (`FURB129`) ([#9880](https://github.com/astral-sh/ruff/pull/9880))
-
-### Rule changes
-
-- \[`ruff`\] Ensure closing parentheses for multiline sequences are always on their own line (`RUF022`, `RUF023`) ([#9793](https://github.com/astral-sh/ruff/pull/9793))
-- \[`numpy`\] Add missing deprecation violations (`NPY002`) ([#9862](https://github.com/astral-sh/ruff/pull/9862))
-- \[`flake8-bandit`\] Detect `mark_safe` usages in decorators ([#9887](https://github.com/astral-sh/ruff/pull/9887))
-- \[`ruff`\] Expand `asyncio-dangling-task` (`RUF006`) to include `new_event_loop` ([#9976](https://github.com/astral-sh/ruff/pull/9976))
-- \[`flake8-pyi`\] Ignore 'unused' private type dicts in class scopes ([#9952](https://github.com/astral-sh/ruff/pull/9952))
-
-### Formatter
-
-- Docstring formatting: Preserve tab indentation when using `indent-style=tabs` ([#9915](https://github.com/astral-sh/ruff/pull/9915))
-- Disable top-level docstring formatting for notebooks ([#9957](https://github.com/astral-sh/ruff/pull/9957))
-- Stabilize quote-style's `preserve` mode ([#9922](https://github.com/astral-sh/ruff/pull/9922))
-
-### CLI
-
-- Allow arbitrary configuration options to be overridden via the CLI ([#9599](https://github.com/astral-sh/ruff/pull/9599))
-
-### Bug fixes
-
-- Make `show-settings` filters directory-agnostic ([#9866](https://github.com/astral-sh/ruff/pull/9866))
-- Respect duplicates when rewriting type aliases ([#9905](https://github.com/astral-sh/ruff/pull/9905))
-- Respect tuple assignments in typing analyzer ([#9969](https://github.com/astral-sh/ruff/pull/9969))
-- Use atomic write when persisting cache ([#9981](https://github.com/astral-sh/ruff/pull/9981))
-- Use non-parenthesized range for `DebugText` ([#9953](https://github.com/astral-sh/ruff/pull/9953))
-- \[`flake8-simplify`\] Avoid false positive with `async` for loops (`SIM113`) ([#9996](https://github.com/astral-sh/ruff/pull/9996))
-- \[`flake8-trio`\] Respect `async with` in `timeout-without-await` ([#9859](https://github.com/astral-sh/ruff/pull/9859))
-- \[`perflint`\] Catch a wider range of mutations in `PERF101` ([#9955](https://github.com/astral-sh/ruff/pull/9955))
-- \[`pycodestyle`\] Fix `E30X` panics on blank lines with trailing white spaces ([#9907](https://github.com/astral-sh/ruff/pull/9907))
-- \[`pydocstyle`\] Allow using `parameters` as a subsection header (`D405`) ([#9894](https://github.com/astral-sh/ruff/pull/9894))
-- \[`pydocstyle`\] Fix blank-line docstring rules for module-level docstrings ([#9878](https://github.com/astral-sh/ruff/pull/9878))
-- \[`pylint`\] Accept 0.0 and 1.0 as common magic values (`PLR2004`) ([#9964](https://github.com/astral-sh/ruff/pull/9964))
-- \[`pylint`\] Avoid suggesting set rewrites for non-hashable types ([#9956](https://github.com/astral-sh/ruff/pull/9956))
-- \[`ruff`\] Avoid false negatives with string literals inside of method calls (`RUF027`) ([#9865](https://github.com/astral-sh/ruff/pull/9865))
-- \[`ruff`\] Fix panic on with f-string detection (`RUF027`) ([#9990](https://github.com/astral-sh/ruff/pull/9990))
-- \[`ruff`\] Ignore builtins when detecting missing f-strings ([#9849](https://github.com/astral-sh/ruff/pull/9849))
-
-### Performance
-
-- Use `memchr` for string lexing ([#9888](https://github.com/astral-sh/ruff/pull/9888))
-- Use `memchr` for tab-indentation detection ([#9853](https://github.com/astral-sh/ruff/pull/9853))
-- Reduce `Result<Tok, LexicalError>` size by using `Box<str>` instead of `String` ([#9885](https://github.com/astral-sh/ruff/pull/9885))
-- Reduce size of `Expr` from 80 to 64 bytes ([#9900](https://github.com/astral-sh/ruff/pull/9900))
-- Improve trailing comma rule performance ([#9867](https://github.com/astral-sh/ruff/pull/9867))
-- Remove unnecessary string cloning from the parser ([#9884](https://github.com/astral-sh/ruff/pull/9884))
-
 ## 0.2.1
 
 This release includes support for range formatting (i.e., the ability to format specific lines
@@ -902,7 +593,7 @@ docstrings via the `docstring-code-format` setting.
 - \[`pylint`\] Default `max-positional-args` to `max-args` ([#8998](https://github.com/astral-sh/ruff/pull/8998))
 - \[`pylint`\] Add `allow-dunder-method-names` setting for `bad-dunder-method-name` (`PLW3201`) ([#8812](https://github.com/astral-sh/ruff/pull/8812))
 - \[`isort`\] Add support for `from-first` setting ([#8663](https://github.com/astral-sh/ruff/pull/8663))
-- \[`isort`\] Add support for `length-sort` settings ([#8841](https://github.com/astral-sh/ruff/pull/8841))
+- \[`isort`\]  Add support for `length-sort` settings ([#8841](https://github.com/astral-sh/ruff/pull/8841))
 
 ### Bug fixes
 
@@ -1031,7 +722,7 @@ docstrings via the `docstring-code-format` setting.
 - \[`flake8-trio`\] Implement `TRIO115` ([#8486](https://github.com/astral-sh/ruff/pull/8486))
 - \[`refurb`\] Implement `type-none-comparison` (`FURB169`) ([#8487](https://github.com/astral-sh/ruff/pull/8487))
 - Flag all comparisons against builtin types in `E721` ([#8491](https://github.com/astral-sh/ruff/pull/8491))
-- Make `SIM118` fix as safe when the expression is a known dictionary ([#8525](https://github.com/astral-sh/ruff/pull/8525))
+- Make `SIM118` fix as safe when the expression is a known dictionary  ([#8525](https://github.com/astral-sh/ruff/pull/8525))
 
 ### Formatter
 
@@ -1199,7 +890,7 @@ Try it today with `ruff format`! [Check out the blog post](https://astral.sh/blo
 - Add `backports.strenum` to `deprecated-imports` ([#8113](https://github.com/astral-sh/ruff/pull/8113))
 - Update `SIM112` to ignore `https_proxy`, `http_proxy`, and `no_proxy` ([#8140](https://github.com/astral-sh/ruff/pull/8140))
 - Update fix for `literal-membership` (`PLR6201`) to be unsafe ([#8097](https://github.com/astral-sh/ruff/pull/8097))
-- Update fix for `mutable-argument-defaults` (`B006`) to be unsafe ([#8108](https://github.com/astral-sh/ruff/pull/8108))
+- Update fix for  `mutable-argument-defaults` (`B006`) to be unsafe ([#8108](https://github.com/astral-sh/ruff/pull/8108))
 
 ### Formatter
 

CONTRIBUTING.md

@@ -33,18 +33,27 @@ Welcome! We're happy to have you here. Thank you in advance for your contributio
 
 ## The Basics
 
-Ruff welcomes contributions in the form of pull requests.
+Ruff welcomes contributions in the form of Pull Requests.
 
 For small changes (e.g., bug fixes), feel free to submit a PR.
 
 For larger changes (e.g., new lint rules, new functionality, new configuration options), consider
 creating an [**issue**](https://github.com/astral-sh/ruff/issues) outlining your proposed change.
-You can also join us on [Discord](https://discord.com/invite/astral-sh) to discuss your idea with the
+You can also join us on [**Discord**](https://discord.gg/c9MhzV8aU5) to discuss your idea with the
 community. We've labeled [beginner-friendly tasks](https://github.com/astral-sh/ruff/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
 in the issue tracker, along with [bugs](https://github.com/astral-sh/ruff/issues?q=is%3Aissue+is%3Aopen+label%3Abug)
 and [improvements](https://github.com/astral-sh/ruff/issues?q=is%3Aissue+is%3Aopen+label%3Aaccepted)
 that are ready for contributions.
 
+If you're looking for a place to start, we recommend implementing a new lint rule (see:
+[_Adding a new lint rule_](#example-adding-a-new-lint-rule), which will allow you to learn from and
+pattern-match against the examples in the existing codebase. Many lint rules are inspired by
+existing Python plugins, which can be used as a reference implementation.
+
+As a concrete example: consider taking on one of the rules from the [`flake8-pyi`](https://github.com/astral-sh/ruff/issues/848)
+plugin, and looking to the originating [Python source](https://github.com/PyCQA/flake8-pyi) for
+guidance.
+
 If you have suggestions on how we might improve the contributing documentation, [let us know](https://github.com/astral-sh/ruff/discussions/5693)!
 
 ### Prerequisites
@@ -98,7 +107,7 @@ RUFF_UPDATE_SCHEMA=1 cargo test  # Rust testing and updating ruff.schema.json
 pre-commit run --all-files --show-diff-on-failure  # Rust and Python formatting, Markdown and Python linting, etc.
 ```
 
-These checks will run on GitHub Actions when you open your pull request, but running them locally
+These checks will run on GitHub Actions when you open your Pull Request, but running them locally
 will save you time and expedite the merge process.
 
 Note that many code changes also require updating the snapshot tests, which is done interactively
@@ -108,14 +117,7 @@ after running `cargo test` like so:
 cargo insta review
 ```
 
-If your pull request relates to a specific lint rule, include the category and rule code in the
-title, as in the following examples:
-
-- \[`flake8-bugbear`\] Avoid false positive for usage after `continue` (`B031`)
-- \[`flake8-simplify`\] Detect implicit `else` cases in `needless-bool` (`SIM103`)
-- \[`pycodestyle`\] Implement `redundant-backslash` (`E502`)
-
-Your pull request will be reviewed by a maintainer, which may involve a few rounds of iteration
+Your Pull Request will be reviewed by a maintainer, which may involve a few rounds of iteration
 prior to merging.
 
 ### Project Structure
@@ -197,14 +199,11 @@ and calling out to lint rule analyzer functions as it goes.
 If you need to inspect the AST, you can run `cargo dev print-ast` with a Python file. Grep
 for the `Diagnostic::new` invocations to understand how other, similar rules are implemented.
 
-Once you're satisfied with your code, add tests for your rule
-(see: [rule testing](#rule-testing-fixtures-and-snapshots)), and regenerate the documentation and
-associated assets (like our JSON Schema) with `cargo dev generate-all`.
+Once you're satisfied with your code, add tests for your rule. See [rule testing](#rule-testing-fixtures-and-snapshots)
+for more details.
 
-Finally, submit a pull request, and include the category, rule name, and rule code in the title, as
-in:
-
-> \[`pycodestyle`\] Implement `redundant-backslash` (`E502`)
+Finally, regenerate the documentation and other generated assets (like our JSON Schema) with:
+`cargo dev generate-all`.
 
 #### Rule naming convention
 
@@ -317,7 +316,7 @@ To preview any changes to the documentation locally:
     ```
 
 The documentation should then be available locally at
-[http://127.0.0.1:8000/ruff/](http://127.0.0.1:8000/ruff/).
+[http://127.0.0.1:8000/docs/](http://127.0.0.1:8000/docs/).
 
 ## Release Process
 
@@ -330,13 +329,13 @@ even patch releases may contain [non-backwards-compatible changes](https://semve
 
 ### Creating a new release
 
-1. Install `uv`: `curl -LsSf https://astral.sh/uv/install.sh | sh`
-1. Run `./scripts/release/bump.sh`; this command will:
-    - Generate a temporary virtual environment with `rooster`
+We use an experimental in-house tool for managing releases.
+
+1. Install `rooster`: `pip install git+https://github.com/zanieb/rooster@main`
+1. Run `rooster release`; this command will:
     - Generate a changelog entry in `CHANGELOG.md`
     - Update versions in `pyproject.toml` and `Cargo.toml`
     - Update references to versions in the `README.md` and documentation
-    - Display contributors for the release
 1. The changelog should then be editorialized for consistency
     - Often labels will be missing from pull requests they will need to be manually organized into the proper section
     - Changes should be edited to be user-facing descriptions, avoiding internal details
@@ -360,7 +359,7 @@ even patch releases may contain [non-backwards-compatible changes](https://semve
     1. Open the draft release in the GitHub release section
     1. Copy the changelog for the release into the GitHub release
         - See previous releases for formatting of section headers
-    1. Append the contributors from the `bump.sh` script
+    1. Generate the contributor list with `rooster contributors` and add to the release notes
 1. If needed, [update the schemastore](https://github.com/astral-sh/ruff/blob/main/scripts/update_schemastore.py).
     1. One can determine if an update is needed when
         `git diff old-version-tag new-version-tag -- ruff.schema.json` returns a non-empty diff.
@@ -814,8 +813,8 @@ To understand Ruff's import categorization system, we first need to define two c
     "project root".)
 - "Package root": The top-most directory defining the Python package that includes a given Python
     file. To find the package root for a given Python file, traverse up its parent directories until
-    you reach a parent directory that doesn't contain an `__init__.py` file (and isn't in a subtree
-    marked as a [namespace package](https://docs.astral.sh/ruff/settings/#namespace-packages)); take the directory
+    you reach a parent directory that doesn't contain an `__init__.py` file (and isn't marked as
+    a [namespace package](https://docs.astral.sh/ruff/settings/#namespace-packages)); take the directory
     just before that, i.e., the first directory in the package.
 
 For example, given:

Cargo.toml

@@ -12,108 +12,103 @@ authors = ["Charlie Marsh <charlie.r.marsh@gmail.com>"]
 license = "MIT"
 
 [workspace.dependencies]
-aho-corasick = { version = "1.1.3" }
+aho-corasick = { version = "1.1.2" }
 annotate-snippets = { version = "0.9.2", features = ["color"] }
-anyhow = { version = "1.0.80" }
+anyhow = { version = "1.0.79" }
 argfile = { version = "0.1.6" }
+assert_cmd = { version = "2.0.13" }
 bincode = { version = "1.3.3" }
-bitflags = { version = "2.5.0" }
-bstr = { version = "1.9.1" }
+bitflags = { version = "2.4.1" }
+bstr = { version = "1.9.0" }
 cachedir = { version = "0.3.1" }
-chrono = { version = "0.4.35", default-features = false, features = ["clock"] }
-clap = { version = "4.5.3", features = ["derive"] }
+chrono = { version = "0.4.34", default-features = false, features = ["clock"] }
+clap = { version = "4.4.18", features = ["derive"] }
 clap_complete_command = { version = "0.5.1" }
 clearscreen = { version = "2.0.0" }
-codspeed-criterion-compat = { version = "2.4.0", default-features = false }
+codspeed-criterion-compat = { version = "2.3.3", default-features = false }
 colored = { version = "2.1.0" }
+configparser = { version = "3.0.3" }
 console_error_panic_hook = { version = "0.1.7" }
 console_log = { version = "1.0.0" }
-countme = { version = "3.0.1" }
+countme = { version ="3.0.1"}
 criterion = { version = "0.5.1", default-features = false }
-crossbeam = { version = "0.8.4" }
 dirs = { version = "5.0.0" }
 drop_bomb = { version = "0.1.5" }
-env_logger = { version = "0.10.1" }
+env_logger = { version ="0.10.1"}
 fern = { version = "0.6.1" }
 filetime = { version = "0.2.23" }
-fs-err = { version = "2.11.0" }
+fs-err = { version ="2.11.0"}
 glob = { version = "0.3.1" }
 globset = { version = "0.4.14" }
-hexf-parse = { version = "0.2.1" }
+hexf-parse = { version ="0.2.1"}
 ignore = { version = "0.4.22" }
-imara-diff = { version = "0.1.5" }
+imara-diff ={ version = "0.1.5"}
 imperative = { version = "1.0.4" }
-indicatif = { version = "0.17.8" }
-indoc = { version = "2.0.4" }
-insta = { version = "1.35.1", feature = ["filters", "glob"] }
-insta-cmd = { version = "0.5.0" }
+indicatif ={ version = "0.17.8"}
+indoc ={ version = "2.0.4"}
+insta = { version = "1.34.0", feature = ["filters", "glob"] }
+insta-cmd = { version = "0.4.0" }
 is-macro = { version = "0.3.5" }
 is-wsl = { version = "0.4.0" }
 itertools = { version = "0.12.1" }
-js-sys = { version = "0.3.69" }
-jod-thread = { version = "0.1.2" }
+js-sys = { version = "0.3.67" }
 lalrpop-util = { version = "0.20.0", default-features = false }
 lexical-parse-float = { version = "0.8.0", features = ["format"] }
-libc = { version = "0.2.153" }
 libcst = { version = "1.1.0", default-features = false }
 log = { version = "0.4.17" }
-lsp-server = { version = "0.7.6" }
-lsp-types = { version = "0.95.0", features = ["proposed"] }
 memchr = { version = "2.7.1" }
-mimalloc = { version = "0.1.39" }
+mimalloc = { version ="0.1.39"}
 natord = { version = "1.0.9" }
 notify = { version = "6.1.1" }
-num_cpus = { version = "1.16.0" }
 once_cell = { version = "1.19.0" }
 path-absolutize = { version = "3.1.1" }
 pathdiff = { version = "0.2.1" }
-pep440_rs = { version = "0.5.0", features = ["serde"] }
+pep440_rs = { version = "0.4.0", features = ["serde"] }
 pretty_assertions = "1.3.0"
-proc-macro2 = { version = "1.0.79" }
+proc-macro2 = { version = "1.0.78" }
 pyproject-toml = { version = "0.9.0" }
 quick-junit = { version = "0.3.5" }
 quote = { version = "1.0.23" }
 rand = { version = "0.8.5" }
-rayon = { version = "1.10.0" }
+rayon = { version = "1.8.1" }
 regex = { version = "1.10.2" }
 result-like = { version = "0.5.0" }
 rustc-hash = { version = "1.1.0" }
 schemars = { version = "0.8.16" }
-seahash = { version = "4.1.0" }
-serde = { version = "1.0.197", features = ["derive"] }
-serde-wasm-bindgen = { version = "0.6.4" }
+seahash = { version ="4.1.0"}
+semver = { version = "1.0.21" }
+serde = { version = "1.0.196", features = ["derive"] }
+serde-wasm-bindgen = { version = "0.6.3" }
 serde_json = { version = "1.0.113" }
 serde_test = { version = "1.0.152" }
 serde_with = { version = "3.6.0", default-features = false, features = ["macros"] }
 shellexpand = { version = "3.0.0" }
-shlex = { version = "1.3.0" }
+shlex = { version ="1.3.0"}
 similar = { version = "2.4.0", features = ["inline"] }
-smallvec = { version = "1.13.2" }
+smallvec = { version = "1.13.1" }
 static_assertions = "1.1.0"
-strum = { version = "0.26.0", features = ["strum_macros"] }
-strum_macros = { version = "0.26.0" }
-syn = { version = "2.0.55" }
-tempfile = { version = "3.9.0" }
+strum = { version = "0.25.0", features = ["strum_macros"] }
+strum_macros = { version = "0.25.3" }
+syn = { version = "2.0.40" }
+tempfile = { version ="3.9.0"}
 test-case = { version = "3.3.1" }
-thiserror = { version = "1.0.58" }
-tikv-jemallocator = { version = "0.5.0" }
-toml = { version = "0.8.11" }
+thiserror = { version = "1.0.57" }
+tikv-jemallocator = { version ="0.5.0"}
+toml = { version = "0.8.9" }
 tracing = { version = "0.1.40" }
 tracing-indicatif = { version = "0.3.6" }
 tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
-tracing-tree = { version = "0.3.0" }
 typed-arena = { version = "2.0.2" }
-unic-ucd-category = { version = "0.9" }
+unic-ucd-category = { version ="0.9"}
 unicode-ident = { version = "1.0.12" }
 unicode-width = { version = "0.1.11" }
-unicode_names2 = { version = "1.2.2" }
-unicode-normalization = { version = "0.1.23" }
-ureq = { version = "2.9.6" }
+unicode_names2 = { version = "1.2.1" }
+ureq = { version = "2.9.1" }
 url = { version = "2.5.0" }
 uuid = { version = "1.6.1", features = ["v4", "fast-rng", "macro-diagnostics", "js"] }
 walkdir = { version = "2.3.2" }
-wasm-bindgen = { version = "0.2.92" }
-wasm-bindgen-test = { version = "0.3.42" }
+wasm-bindgen = { version = "0.2.84" }
+wasm-bindgen-test = { version = "0.3.40" }
 wild = { version = "2" }
 
 [workspace.lints.rust]

README.md

@@ -7,9 +7,8 @@
 [![image](https://img.shields.io/pypi/l/ruff.svg)](https://pypi.python.org/pypi/ruff)
 [![image](https://img.shields.io/pypi/pyversions/ruff.svg)](https://pypi.python.org/pypi/ruff)
 [![Actions status](https://github.com/astral-sh/ruff/workflows/CI/badge.svg)](https://github.com/astral-sh/ruff/actions)
-[![Discord](https://img.shields.io/badge/Discord-%235865F2.svg?logo=discord&logoColor=white)](https://discord.com/invite/astral-sh)
 
-[**Docs**](https://docs.astral.sh/ruff/) | [**Playground**](https://play.ruff.rs/)
+[**Discord**](https://discord.gg/c9MhzV8aU5) | [**Docs**](https://docs.astral.sh/ruff/) | [**Playground**](https://play.ruff.rs/)
 
 An extremely fast Python linter and code formatter, written in Rust.
 
@@ -32,7 +31,7 @@ An extremely fast Python linter and code formatter, written in Rust.
 - ⚖️ Drop-in parity with [Flake8](https://docs.astral.sh/ruff/faq/#how-does-ruff-compare-to-flake8), isort, and Black
 - 📦 Built-in caching, to avoid re-analyzing unchanged files
 - 🔧 Fix support, for automatic error correction (e.g., automatically remove unused imports)
-- 📏 Over [800 built-in rules](https://docs.astral.sh/ruff/rules/), with native re-implementations
+- 📏 Over [700 built-in rules](https://docs.astral.sh/ruff/rules/), with native re-implementations
     of popular Flake8 plugins, like flake8-bugbear
 - ⌨️ First-party [editor integrations](https://docs.astral.sh/ruff/integrations/) for
     [VS Code](https://github.com/astral-sh/ruff-vscode) and [more](https://github.com/astral-sh/ruff-lsp)
@@ -129,7 +128,7 @@ and with [a variety of other package managers](https://docs.astral.sh/ruff/insta
 To run Ruff as a linter, try any of the following:
 
 ```shell
-ruff check                          # Lint all files in the current directory (and any subdirectories).
+ruff check .                        # Lint all files in the current directory (and any subdirectories).
 ruff check path/to/code/            # Lint all files in `/path/to/code` (and any subdirectories).
 ruff check path/to/code/*.py        # Lint all `.py` files in `/path/to/code`.
 ruff check path/to/code/to/file.py  # Lint `file.py`.
@@ -139,7 +138,7 @@ ruff check @arguments.txt           # Lint using an input file, treating its con
 Or, to run Ruff as a formatter:
 
 ```shell
-ruff format                          # Format all files in the current directory (and any subdirectories).
+ruff format .                        # Format all files in the current directory (and any subdirectories).
 ruff format path/to/code/            # Format all files in `/path/to/code` (and any subdirectories).
 ruff format path/to/code/*.py        # Format all `.py` files in `/path/to/code`.
 ruff format path/to/code/to/file.py  # Format `file.py`.
@@ -151,7 +150,7 @@ Ruff can also be used as a [pre-commit](https://pre-commit.com/) hook via [`ruff
 ```yaml
 - repo: https://github.com/astral-sh/ruff-pre-commit
   # Ruff version.
-  rev: v0.3.5
+  rev: v0.2.1
   hooks:
     # Run the linter.
     - id: ruff
@@ -173,7 +172,7 @@ jobs:
   ruff:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - uses: chartboost/ruff-action@v1
 ```
 
@@ -183,9 +182,10 @@ Ruff can be configured through a `pyproject.toml`, `ruff.toml`, or `.ruff.toml`
 [_Configuration_](https://docs.astral.sh/ruff/configuration/), or [_Settings_](https://docs.astral.sh/ruff/settings/)
 for a complete list of all configuration options).
 
-If left unspecified, Ruff's default configuration is equivalent to the following `ruff.toml` file:
+If left unspecified, Ruff's default configuration is equivalent to:
 
 ```toml
+[tool.ruff]
 # Exclude a variety of commonly ignored directories.
 exclude = [
     ".bzr",
@@ -223,7 +223,7 @@ indent-width = 4
 # Assume Python 3.8
 target-version = "py38"
 
-[lint]
+[tool.ruff.lint]
 # Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
 select = ["E4", "E7", "E9", "F"]
 ignore = []
@@ -235,7 +235,7 @@ unfixable = []
 # Allow unused variables when underscore-prefixed.
 dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
 
-[format]
+[tool.ruff.format]
 # Like Black, use double quotes for strings.
 quote-style = "double"
 
@@ -249,20 +249,11 @@ skip-magic-trailing-comma = false
 line-ending = "auto"
 ```
 
-Note that, in a `pyproject.toml`, each section header should be prefixed with `tool.ruff`. For
-example, `[lint]` should be replaced with `[tool.ruff.lint]`.
-
-Some configuration options can be provided via dedicated command-line arguments, such as those
-related to rule enablement and disablement, file discovery, and logging level:
+Some configuration options can be provided via the command-line, such as those related to
+rule enablement and disablement, file discovery, and logging level:
 
 ```shell
-ruff check --select F401 --select F403 --quiet
-```
-
-The remaining configuration options can be provided through a catch-all `--config` argument:
-
-```shell
-ruff check --config "lint.per-file-ignores = {'some_file.py' = ['F841']}"
+ruff check path/to/code/ --select F401 --select F403 --quiet
 ```
 
 See `ruff help` for more on Ruff's top-level commands, or `ruff help check` and `ruff help format`
@@ -272,7 +263,7 @@ for more on the linting and formatting commands, respectively.
 
 <!-- Begin section: Rules -->
 
-**Ruff supports over 800 lint rules**, many of which are inspired by popular tools like Flake8,
+**Ruff supports over 700 lint rules**, many of which are inspired by popular tools like Flake8,
 isort, pyupgrade, and others. Regardless of the rule's origin, Ruff re-implements every rule in
 Rust as a first-party feature.
 
@@ -350,14 +341,14 @@ For a complete enumeration of the supported rules, see [_Rules_](https://docs.as
 Contributions are welcome and highly appreciated. To get started, check out the
 [**contributing guidelines**](https://docs.astral.sh/ruff/contributing/).
 
-You can also join us on [**Discord**](https://discord.com/invite/astral-sh).
+You can also join us on [**Discord**](https://discord.gg/c9MhzV8aU5).
 
 ## Support
 
 Having trouble? Check out the existing issues on [**GitHub**](https://github.com/astral-sh/ruff/issues),
 or feel free to [**open a new one**](https://github.com/astral-sh/ruff/issues/new).
 
-You can also ask for help on [**Discord**](https://discord.com/invite/astral-sh).
+You can also ask for help on [**Discord**](https://discord.gg/c9MhzV8aU5).
 
 ## Acknowledgements
 
@@ -387,7 +378,6 @@ Ruff is released under the MIT license.
 
 Ruff is used by a number of major open-source projects and companies, including:
 
-- [Albumentations](https://github.com/albumentations-team/albumentations)
 - Amazon ([AWS SAM](https://github.com/aws/serverless-application-model))
 - Anthropic ([Python SDK](https://github.com/anthropics/anthropic-sdk-python))
 - [Apache Airflow](https://github.com/apache/airflow)
@@ -414,7 +404,6 @@ Ruff is used by a number of major open-source projects and companies, including:
 - [Ibis](https://github.com/ibis-project/ibis)
 - [ivy](https://github.com/unifyai/ivy)
 - [Jupyter](https://github.com/jupyter-server/jupyter_server)
-- [Kraken Tech](https://kraken.tech/)
 - [LangChain](https://github.com/hwchase17/langchain)
 - [Litestar](https://litestar.dev/)
 - [LlamaIndex](https://github.com/jerryjliu/llama_index)
@@ -429,7 +418,6 @@ Ruff is used by a number of major open-source projects and companies, including:
 - [Mypy](https://github.com/python/mypy)
 - Netflix ([Dispatch](https://github.com/Netflix/dispatch))
 - [Neon](https://github.com/neondatabase/neon)
-- [Nokia](https://nokia.com/)
 - [NoneBot](https://github.com/nonebot/nonebot2)
 - [NumPyro](https://github.com/pyro-ppl/numpyro)
 - [ONNX](https://github.com/onnx/onnx)

crates/ruff/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.3.5"
+version = "0.2.1"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }
@@ -20,7 +20,6 @@ ruff_macros = { path = "../ruff_macros" }
 ruff_notebook = { path = "../ruff_notebook" }
 ruff_python_ast = { path = "../ruff_python_ast" }
 ruff_python_formatter = { path = "../ruff_python_formatter" }
-ruff_server = { path = "../ruff_server" }
 ruff_source_file = { path = "../ruff_source_file" }
 ruff_text_size = { path = "../ruff_text_size" }
 ruff_workspace = { path = "../ruff_workspace" }
@@ -41,7 +40,6 @@ is-macro = { workspace = true }
 itertools = { workspace = true }
 log = { workspace = true }
 notify = { workspace = true }
-num_cpus = { workspace = true }
 path-absolutize = { workspace = true, features = ["once_cell_cache"] }
 rayon = { workspace = true }
 regex = { workspace = true }
@@ -54,16 +52,15 @@ tempfile = { workspace = true }
 thiserror = { workspace = true }
 toml = { workspace = true }
 tracing = { workspace = true, features = ["log"] }
-tracing-subscriber = { workspace = true, features = ["registry"] }
-tracing-tree = { workspace = true }
 walkdir = { workspace = true }
 wild = { workspace = true }
 
 [dev-dependencies]
 # Enable test rules during development
 ruff_linter = { path = "../ruff_linter", features = ["clap", "test-rules"] }
+assert_cmd = { workspace = true }
 # Avoid writing colored snapshots when running tests from the terminal
-colored = { workspace = true, features = ["no-color"] }
+colored = { workspace = true, features = ["no-color"]}
 insta = { workspace = true, features = ["filters", "json"] }
 insta-cmd = { workspace = true }
 tempfile = { workspace = true }

crates/ruff/src/args.rs

@@ -28,52 +28,6 @@ use ruff_workspace::configuration::{Configuration, RuleSelection};
 use ruff_workspace::options::{Options, PycodestyleOptions};
 use ruff_workspace::resolver::ConfigurationTransformer;
 
-/// All configuration options that can be passed "globally",
-/// i.e., can be passed to all subcommands
-#[derive(Debug, Default, Clone, clap::Args)]
-pub struct GlobalConfigArgs {
-    #[clap(flatten)]
-    log_level_args: LogLevelArgs,
-    /// Either a path to a TOML configuration file (`pyproject.toml` or `ruff.toml`),
-    /// or a TOML `<KEY> = <VALUE>` pair
-    /// (such as you might find in a `ruff.toml` configuration file)
-    /// overriding a specific configuration option.
-    /// Overrides of individual settings using this option always take precedence
-    /// over all configuration files, including configuration files that were also
-    /// specified using `--config`.
-    #[arg(
-        long,
-        action = clap::ArgAction::Append,
-        value_name = "CONFIG_OPTION",
-        value_parser = ConfigArgumentParser,
-        global = true,
-        help_heading = "Global options",
-    )]
-    pub config: Vec<SingleConfigArgument>,
-    /// Ignore all configuration files.
-    //
-    // Note: We can't mark this as conflicting with `--config` here
-    // as `--config` can be used for specifying configuration overrides
-    // as well as configuration files.
-    // Specifying a configuration file conflicts with `--isolated`;
-    // specifying a configuration override does not.
-    // If a user specifies `ruff check --isolated --config=ruff.toml`,
-    // we emit an error later on, after the initial parsing by clap.
-    #[arg(long, help_heading = "Global options", global = true)]
-    pub isolated: bool,
-}
-
-impl GlobalConfigArgs {
-    pub fn log_level(&self) -> LogLevel {
-        LogLevel::from(&self.log_level_args)
-    }
-
-    #[must_use]
-    fn partition(self) -> (LogLevel, Vec<SingleConfigArgument>, bool) {
-        (self.log_level(), self.config, self.isolated)
-    }
-}
-
 #[derive(Debug, Parser)]
 #[command(
     author,
@@ -84,9 +38,9 @@ impl GlobalConfigArgs {
 #[command(version)]
 pub struct Args {
     #[command(subcommand)]
-    pub(crate) command: Command,
+    pub command: Command,
     #[clap(flatten)]
-    pub(crate) global_options: GlobalConfigArgs,
+    pub log_level_args: LogLevelArgs,
 }
 
 #[allow(clippy::large_enum_variant)]
@@ -109,6 +63,10 @@ pub enum Command {
         /// Output format
         #[arg(long, value_enum, default_value = "text")]
         output_format: HelpFormat,
+
+        /// Output format (Deprecated: Use `--output-format` instead).
+        #[arg(long, value_enum, conflicts_with = "output_format", hide = true)]
+        format: Option<HelpFormat>,
     },
     /// List or describe the available configuration options.
     Config { option: Option<String> },
@@ -117,6 +75,10 @@ pub enum Command {
         /// Output format
         #[arg(long, value_enum, default_value = "text")]
         output_format: HelpFormat,
+
+        /// Output format (Deprecated: Use `--output-format` instead).
+        #[arg(long, value_enum, conflicts_with = "output_format", hide = true)]
+        format: Option<HelpFormat>,
     },
     /// Clear any caches in the current directory and any subdirectories.
     #[clap(alias = "--clean")]
@@ -126,8 +88,6 @@ pub enum Command {
     GenerateShellCompletion { shell: clap_complete_command::Shell },
     /// Run the Ruff formatter on the given files or directories.
     Format(FormatCommand),
-    /// Run the language server.
-    Server(ServerCommand),
     /// Display Ruff's version
     Version {
         #[arg(long, value_enum, default_value = "text")]
@@ -201,6 +161,20 @@ pub struct CheckCommand {
     preview: bool,
     #[clap(long, overrides_with("preview"), hide = true)]
     no_preview: bool,
+    /// Either a path to a TOML configuration file (`pyproject.toml` or `ruff.toml`),
+    /// or a TOML `<KEY> = <VALUE>` pair
+    /// (such as you might find in a `ruff.toml` configuration file)
+    /// overriding a specific configuration option.
+    /// Overrides of individual settings using this option always take precedence
+    /// over all configuration files, including configuration files that were also
+    /// specified using `--config`.
+    #[arg(
+        long,
+        action = clap::ArgAction::Append,
+        value_name = "CONFIG_OPTION",
+        value_parser = ConfigArgumentParser,
+    )]
+    pub config: Vec<SingleConfigArgument>,
     /// Comma-separated list of rule codes to enable (or ALL, to enable all rules).
     #[arg(
         long,
@@ -332,6 +306,17 @@ pub struct CheckCommand {
     /// Disable cache reads.
     #[arg(short, long, env = "RUFF_NO_CACHE", help_heading = "Miscellaneous")]
     pub no_cache: bool,
+    /// Ignore all configuration files.
+    //
+    // Note: We can't mark this as conflicting with `--config` here
+    // as `--config` can be used for specifying configuration overrides
+    // as well as configuration files.
+    // Specifying a configuration file conflicts with `--isolated`;
+    // specifying a configuration override does not.
+    // If a user specifies `ruff check --isolated --config=ruff.toml`,
+    // we emit an error later on, after the initial parsing by clap.
+    #[arg(long, help_heading = "Miscellaneous")]
+    pub isolated: bool,
     /// Path to the cache directory.
     #[arg(long, env = "RUFF_CACHE_DIR", help_heading = "Miscellaneous")]
     pub cache_dir: Option<PathBuf>,
@@ -423,6 +408,20 @@ pub struct FormatCommand {
     /// difference between the current file and how the formatted file would look like.
     #[arg(long)]
     pub diff: bool,
+    /// Either a path to a TOML configuration file (`pyproject.toml` or `ruff.toml`),
+    /// or a TOML `<KEY> = <VALUE>` pair
+    /// (such as you might find in a `ruff.toml` configuration file)
+    /// overriding a specific configuration option.
+    /// Overrides of individual settings using this option always take precedence
+    /// over all configuration files, including configuration files that were also
+    /// specified using `--config`.
+    #[arg(
+        long,
+        action = clap::ArgAction::Append,
+        value_name = "CONFIG_OPTION",
+        value_parser = ConfigArgumentParser,
+    )]
+    pub config: Vec<SingleConfigArgument>,
 
     /// Disable cache reads.
     #[arg(short, long, env = "RUFF_NO_CACHE", help_heading = "Miscellaneous")]
@@ -463,6 +462,17 @@ pub struct FormatCommand {
     /// Set the line-length.
     #[arg(long, help_heading = "Format configuration")]
     pub line_length: Option<LineLength>,
+    /// Ignore all configuration files.
+    //
+    // Note: We can't mark this as conflicting with `--config` here
+    // as `--config` can be used for specifying configuration overrides
+    // as well as configuration files.
+    // Specifying a configuration file conflicts with `--isolated`;
+    // specifying a configuration override does not.
+    // If a user specifies `ruff check --isolated --config=ruff.toml`,
+    // we emit an error later on, after the initial parsing by clap.
+    #[arg(long, help_heading = "Miscellaneous")]
+    pub isolated: bool,
     /// The name of the file when passing it through stdin.
     #[arg(long, help_heading = "Miscellaneous")]
     pub stdin_filename: Option<PathBuf>,
@@ -496,13 +506,6 @@ pub struct FormatCommand {
     pub range: Option<FormatRange>,
 }
 
-#[derive(Copy, Clone, Debug, clap::Parser)]
-pub struct ServerCommand {
-    /// Enable preview mode; required for regular operation
-    #[arg(long)]
-    pub(crate) preview: bool,
-}
-
 #[derive(Debug, Clone, Copy, clap::ValueEnum)]
 pub enum HelpFormat {
     Text,
@@ -510,7 +513,7 @@ pub enum HelpFormat {
 }
 
 #[allow(clippy::module_name_repetitions)]
-#[derive(Debug, Default, Clone, clap::Args)]
+#[derive(Debug, clap::Args)]
 pub struct LogLevelArgs {
     /// Enable verbose logging.
     #[arg(
@@ -558,10 +561,6 @@ impl From<&LogLevelArgs> for LogLevel {
 /// Configuration-related arguments passed via the CLI.
 #[derive(Default)]
 pub struct ConfigArguments {
-    /// Whether the user specified --isolated on the command line
-    pub(crate) isolated: bool,
-    /// The logging level to be used, derived from command-line arguments passed
-    pub(crate) log_level: LogLevel,
     /// Path to a pyproject.toml or ruff.toml configuration file (etc.).
     /// Either 0 or 1 configuration file paths may be provided on the command line.
     config_file: Option<PathBuf>,
@@ -582,19 +581,21 @@ impl ConfigArguments {
     }
 
     fn from_cli_arguments(
-        global_options: GlobalConfigArgs,
+        config_options: Vec<SingleConfigArgument>,
         per_flag_overrides: ExplicitConfigOverrides,
+        isolated: bool,
     ) -> anyhow::Result<Self> {
-        let (log_level, config_options, isolated) = global_options.partition();
-        let mut config_file: Option<PathBuf> = None;
-        let mut overrides = Configuration::default();
+        let mut new = Self {
+            per_flag_overrides,
+            ..Self::default()
+        };
 
         for option in config_options {
             match option {
                 SingleConfigArgument::SettingsOverride(overridden_option) => {
                     let overridden_option = Arc::try_unwrap(overridden_option)
                         .unwrap_or_else(|option| option.deref().clone());
-                    overrides = overrides.combine(Configuration::from_options(
+                    new.overrides = new.overrides.combine(Configuration::from_options(
                         overridden_option,
                         None,
                         &path_dedot::CWD,
@@ -613,7 +614,7 @@ The argument `--config={}` cannot be used with `--isolated`
                             path.display()
                         );
                     }
-                    if let Some(ref config_file) = config_file {
+                    if let Some(ref config_file) = new.config_file {
                         let (first, second) = (config_file.display(), path.display());
                         bail!(
                             "\
@@ -624,17 +625,11 @@ You cannot specify more than one configuration file on the command line.
 "
                         );
                     }
-                    config_file = Some(path);
+                    new.config_file = Some(path);
                 }
             }
         }
-        Ok(Self {
-            isolated,
-            log_level,
-            config_file,
-            overrides,
-            per_flag_overrides,
-        })
+        Ok(new)
     }
 }
 
@@ -648,10 +643,7 @@ impl ConfigurationTransformer for ConfigArguments {
 impl CheckCommand {
     /// Partition the CLI into command-line arguments and configuration
     /// overrides.
-    pub fn partition(
-        self,
-        global_options: GlobalConfigArgs,
-    ) -> anyhow::Result<(CheckArguments, ConfigArguments)> {
+    pub fn partition(self) -> anyhow::Result<(CheckArguments, ConfigArguments)> {
         let check_arguments = CheckArguments {
             add_noqa: self.add_noqa,
             diff: self.diff,
@@ -660,6 +652,7 @@ impl CheckCommand {
             exit_zero: self.exit_zero,
             files: self.files,
             ignore_noqa: self.ignore_noqa,
+            isolated: self.isolated,
             no_cache: self.no_cache,
             output_file: self.output_file,
             show_files: self.show_files,
@@ -703,7 +696,8 @@ impl CheckCommand {
             extension: self.extension,
         };
 
-        let config_args = ConfigArguments::from_cli_arguments(global_options, cli_overrides)?;
+        let config_args =
+            ConfigArguments::from_cli_arguments(self.config, cli_overrides, self.isolated)?;
         Ok((check_arguments, config_args))
     }
 }
@@ -711,14 +705,12 @@ impl CheckCommand {
 impl FormatCommand {
     /// Partition the CLI into command-line arguments and configuration
     /// overrides.
-    pub fn partition(
-        self,
-        global_options: GlobalConfigArgs,
-    ) -> anyhow::Result<(FormatArguments, ConfigArguments)> {
+    pub fn partition(self) -> anyhow::Result<(FormatArguments, ConfigArguments)> {
         let format_arguments = FormatArguments {
             check: self.check,
             diff: self.diff,
             files: self.files,
+            isolated: self.isolated,
             no_cache: self.no_cache,
             stdin_filename: self.stdin_filename,
             range: self.range,
@@ -738,7 +730,8 @@ impl FormatCommand {
             ..ExplicitConfigOverrides::default()
         };
 
-        let config_args = ConfigArguments::from_cli_arguments(global_options, cli_overrides)?;
+        let config_args =
+            ConfigArguments::from_cli_arguments(self.config, cli_overrides, self.isolated)?;
         Ok((format_arguments, config_args))
     }
 }
@@ -752,34 +745,38 @@ fn resolve_bool_arg(yes: bool, no: bool) -> Option<bool> {
     }
 }
 
-/// Enumeration of various ways in which a --config CLI flag
-/// could be invalid
 #[derive(Debug)]
-enum InvalidConfigFlagReason {
-    InvalidToml(toml::de::Error),
-    /// It was valid TOML, but not a valid ruff config file.
-    /// E.g. the user tried to select a rule that doesn't exist,
-    /// or tried to enable a setting that doesn't exist
-    ValidTomlButInvalidRuffSchema(toml::de::Error),
-    /// It was a valid ruff config file, but the user tried to pass a
-    /// value for `extend` as part of the config override.
-    // `extend` is special, because it affects which config files we look at
-    /// in the first place. We currently only parse --config overrides *after*
-    /// we've combined them with all the arguments from the various config files
-    /// that we found, so trying to override `extend` as part of a --config
-    /// override is forbidden.
-    ExtendPassedViaConfigFlag,
+enum TomlParseFailureKind {
+    SyntaxError,
+    UnknownOption,
 }
 
-impl InvalidConfigFlagReason {
-    const fn description(&self) -> &'static str {
-        match self {
-            Self::InvalidToml(_) => "The supplied argument is not valid TOML",
-            Self::ValidTomlButInvalidRuffSchema(_) => {
+impl std::fmt::Display for TomlParseFailureKind {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let display = match self {
+            Self::SyntaxError => "The supplied argument is not valid TOML",
+            Self::UnknownOption => {
                 "Could not parse the supplied argument as a `ruff.toml` configuration option"
             }
-            Self::ExtendPassedViaConfigFlag => "Cannot include `extend` in a --config flag value",
-        }
+        };
+        write!(f, "{display}")
+    }
+}
+
+#[derive(Debug)]
+struct TomlParseFailure {
+    kind: TomlParseFailureKind,
+    underlying_error: toml::de::Error,
+}
+
+impl std::fmt::Display for TomlParseFailure {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let TomlParseFailure {
+            kind,
+            underlying_error,
+        } = self;
+        let display = format!("{kind}:\n\n{underlying_error}");
+        write!(f, "{}", display.trim_end())
     }
 }
 
@@ -821,38 +818,27 @@ impl TypedValueParser for ConfigArgumentParser {
         arg: Option<&clap::Arg>,
         value: &std::ffi::OsStr,
     ) -> Result<Self::Value, clap::Error> {
-        // Convert to UTF-8.
-        let Some(value) = value.to_str() else {
-            // But respect non-UTF-8 paths.
-            let path_to_config_file = PathBuf::from(value);
-            if path_to_config_file.is_file() {
-                return Ok(SingleConfigArgument::FilePath(path_to_config_file));
-            }
-            return Err(clap::Error::new(clap::error::ErrorKind::InvalidUtf8));
-        };
-
-        // Expand environment variables and tildes.
-        if let Ok(path_to_config_file) =
-            shellexpand::full(value).map(|config| PathBuf::from(&*config))
-        {
-            if path_to_config_file.is_file() {
-                return Ok(SingleConfigArgument::FilePath(path_to_config_file));
-            }
+        let path_to_config_file = PathBuf::from(value);
+        if path_to_config_file.exists() {
+            return Ok(SingleConfigArgument::FilePath(path_to_config_file));
         }
 
-        let config_parse_error = match toml::Table::from_str(value) {
-            Ok(table) => match table.try_into::<Options>() {
-                Ok(option) => {
-                    if option.extend.is_none() {
-                        return Ok(SingleConfigArgument::SettingsOverride(Arc::new(option)));
-                    }
-                    InvalidConfigFlagReason::ExtendPassedViaConfigFlag
-                }
-                Err(underlying_error) => {
-                    InvalidConfigFlagReason::ValidTomlButInvalidRuffSchema(underlying_error)
-                }
+        let value = value
+            .to_str()
+            .ok_or_else(|| clap::Error::new(clap::error::ErrorKind::InvalidUtf8))?;
+
+        let toml_parse_error = match toml::Table::from_str(value) {
+            Ok(table) => match table.try_into() {
+                Ok(option) => return Ok(SingleConfigArgument::SettingsOverride(Arc::new(option))),
+                Err(underlying_error) => TomlParseFailure {
+                    kind: TomlParseFailureKind::UnknownOption,
+                    underlying_error,
+                },
+            },
+            Err(underlying_error) => TomlParseFailure {
+                kind: TomlParseFailureKind::SyntaxError,
+                underlying_error,
             },
-            Err(underlying_error) => InvalidConfigFlagReason::InvalidToml(underlying_error),
         };
 
         let mut new_error = clap::Error::new(clap::error::ErrorKind::ValueValidation).with_cmd(cmd);
@@ -867,21 +853,6 @@ impl TypedValueParser for ConfigArgumentParser {
             clap::error::ContextValue::String(value.to_string()),
         );
 
-        let underlying_error = match &config_parse_error {
-            InvalidConfigFlagReason::ExtendPassedViaConfigFlag => {
-                let tip = config_parse_error.description().into();
-                new_error.insert(
-                    clap::error::ContextKind::Suggested,
-                    clap::error::ContextValue::StyledStrs(vec![tip]),
-                );
-                return Err(new_error);
-            }
-            InvalidConfigFlagReason::InvalidToml(underlying_error)
-            | InvalidConfigFlagReason::ValidTomlButInvalidRuffSchema(underlying_error) => {
-                underlying_error
-            }
-        };
-
         // small hack so that multiline tips
         // have the same indent on the left-hand side:
         let tip_indent = " ".repeat("  tip: ".len());
@@ -906,20 +877,16 @@ A `--config` flag must either be a path to a `.toml` configuration file
                     "
 
 It looks like you were trying to pass a path to a configuration file.
-The path `{value}` does not point to a configuration file"
+The path `{value}` does not exist"
                 ));
             }
         } else if value.contains('=') {
-            tip.push_str(&format!(
-                "\n\n{}:\n\n{underlying_error}",
-                config_parse_error.description()
-            ));
+            tip.push_str(&format!("\n\n{toml_parse_error}"));
         }
-        let tip = tip.trim_end().to_owned().into();
 
         new_error.insert(
             clap::error::ContextKind::Suggested,
-            clap::error::ContextValue::StyledStrs(vec![tip]),
+            clap::error::ContextValue::StyledStrs(vec![tip.into()]),
         );
 
         Err(new_error)
@@ -974,6 +941,7 @@ pub struct CheckArguments {
     pub exit_zero: bool,
     pub files: Vec<PathBuf>,
     pub ignore_noqa: bool,
+    pub isolated: bool,
     pub no_cache: bool,
     pub output_file: Option<PathBuf>,
     pub show_files: bool,
@@ -991,6 +959,7 @@ pub struct FormatArguments {
     pub no_cache: bool,
     pub diff: bool,
     pub files: Vec<PathBuf>,
+    pub isolated: bool,
     pub stdin_filename: Option<PathBuf>,
     pub range: Option<FormatRange>,
 }

crates/ruff/src/cache.rs

@@ -383,7 +383,7 @@ pub(crate) fn init(path: &Path) -> Result<()> {
     let gitignore_path = path.join(".gitignore");
     if !gitignore_path.exists() {
         let mut file = fs::File::create(gitignore_path)?;
-        file.write_all(b"# Automatically created by ruff.\n*\n")?;
+        file.write_all(b"*")?;
     }
 
     Ok(())

crates/ruff/src/commands/check.rs

@@ -252,7 +252,6 @@ mod test {
         for file in [&pyproject_toml, &python_file, &notebook] {
             fs::OpenOptions::new()
                 .create(true)
-                .truncate(true)
                 .write(true)
                 .mode(0o000)
                 .open(file)?;

crates/ruff/src/commands/format.rs

@@ -61,8 +61,13 @@ impl FormatMode {
 pub(crate) fn format(
     cli: FormatArguments,
     config_arguments: &ConfigArguments,
+    log_level: LogLevel,
 ) -> Result<ExitStatus> {
-    let pyproject_config = resolve(config_arguments, cli.stdin_filename.as_deref())?;
+    let pyproject_config = resolve(
+        cli.isolated,
+        config_arguments,
+        cli.stdin_filename.as_deref(),
+    )?;
     let mode = FormatMode::from_cli(&cli);
     let files = resolve_default_files(cli.files, false);
     let (paths, resolver) = python_files_in_path(&files, &pyproject_config, config_arguments)?;
@@ -197,7 +202,7 @@ pub(crate) fn format(
     }
 
     // Report on the formatting changes.
-    if config_arguments.log_level >= LogLevel::Default {
+    if log_level >= LogLevel::Default {
         if mode.is_diff() {
             // Allow piping the diff to e.g. a file by writing the summary to stderr
             results.write_summary(&mut stderr().lock())?;
@@ -527,7 +532,7 @@ impl<'a> FormatResults<'a> {
             })
             .sorted_unstable_by_key(|(path, _, _)| *path)
         {
-            write!(f, "{}", unformatted.diff(formatted, Some(path)).unwrap())?;
+            unformatted.diff(formatted, Some(path), f)?;
         }
 
         Ok(())

crates/ruff/src/commands/format_stdin.rs

@@ -23,7 +23,11 @@ pub(crate) fn format_stdin(
     cli: &FormatArguments,
     config_arguments: &ConfigArguments,
 ) -> Result<ExitStatus> {
-    let pyproject_config = resolve(config_arguments, cli.stdin_filename.as_deref())?;
+    let pyproject_config = resolve(
+        cli.isolated,
+        config_arguments,
+        cli.stdin_filename.as_deref(),
+    )?;
 
     let mut resolver = Resolver::new(&pyproject_config);
     warn_incompatible_formatter_settings(&resolver);
@@ -118,13 +122,9 @@ fn format_source_code(
             }
             FormatMode::Check => {}
             FormatMode::Diff => {
-                use std::io::Write;
-                write!(
-                    &mut stdout().lock(),
-                    "{}",
-                    source_kind.diff(formatted, path).unwrap()
-                )
-                .map_err(|err| FormatCommandError::Diff(path.map(Path::to_path_buf), err))?;
+                source_kind
+                    .diff(formatted, path, &mut stdout().lock())
+                    .map_err(|err| FormatCommandError::Diff(path.map(Path::to_path_buf), err))?;
             }
         },
         FormattedSource::Unchanged => {

crates/ruff/src/commands/mod.rs

@@ -7,7 +7,6 @@ pub(crate) mod format;
 pub(crate) mod format_stdin;
 pub(crate) mod linter;
 pub(crate) mod rule;
-pub(crate) mod server;
 pub(crate) mod show_files;
 pub(crate) mod show_settings;
 pub(crate) mod version;

crates/ruff/src/commands/server.rs

@@ -1,79 +0,0 @@
-use std::num::NonZeroUsize;
-
-use crate::ExitStatus;
-use anyhow::Result;
-use ruff_linter::logging::LogLevel;
-use ruff_server::Server;
-use tracing::{level_filters::LevelFilter, metadata::Level, subscriber::Interest, Metadata};
-use tracing_subscriber::{
-    layer::{Context, Filter, SubscriberExt},
-    Layer, Registry,
-};
-use tracing_tree::time::Uptime;
-
-pub(crate) fn run_server(
-    preview: bool,
-    worker_threads: NonZeroUsize,
-    log_level: LogLevel,
-) -> Result<ExitStatus> {
-    if !preview {
-        tracing::error!("--preview needs to be provided as a command line argument while the server is still unstable.\nFor example: `ruff server --preview`");
-        return Ok(ExitStatus::Error);
-    }
-    let trace_level = if log_level == LogLevel::Verbose {
-        Level::TRACE
-    } else {
-        Level::DEBUG
-    };
-
-    let subscriber = Registry::default().with(
-        tracing_tree::HierarchicalLayer::default()
-            .with_indent_lines(true)
-            .with_indent_amount(2)
-            .with_bracketed_fields(true)
-            .with_targets(true)
-            .with_writer(|| Box::new(std::io::stderr()))
-            .with_timer(Uptime::default())
-            .with_filter(LoggingFilter { trace_level }),
-    );
-
-    tracing::subscriber::set_global_default(subscriber)?;
-
-    let server = Server::new(worker_threads)?;
-
-    server.run().map(|()| ExitStatus::Success)
-}
-
-struct LoggingFilter {
-    trace_level: Level,
-}
-
-impl LoggingFilter {
-    fn is_enabled(&self, meta: &Metadata<'_>) -> bool {
-        let filter = if meta.target().starts_with("ruff") {
-            self.trace_level
-        } else {
-            Level::INFO
-        };
-
-        meta.level() <= &filter
-    }
-}
-
-impl<S> Filter<S> for LoggingFilter {
-    fn enabled(&self, meta: &Metadata<'_>, _cx: &Context<'_, S>) -> bool {
-        self.is_enabled(meta)
-    }
-
-    fn callsite_enabled(&self, meta: &'static Metadata<'static>) -> Interest {
-        if self.is_enabled(meta) {
-            Interest::always()
-        } else {
-            Interest::never()
-        }
-    }
-
-    fn max_level_hint(&self) -> Option<LevelFilter> {
-        Some(LevelFilter::from_level(self.trace_level))
-    }
-}

crates/ruff/src/diagnostics.rs

@@ -3,7 +3,6 @@
 use std::borrow::Cow;
 use std::fs::File;
 use std::io;
-use std::io::Write;
 use std::ops::{Add, AddAssign};
 use std::path::Path;
 
@@ -290,10 +289,10 @@ pub(crate) fn lint_path(
                 match fix_mode {
                     flags::FixMode::Apply => transformed.write(&mut File::create(path)?)?,
                     flags::FixMode::Diff => {
-                        write!(
+                        source_kind.diff(
+                            transformed.as_ref(),
+                            Some(path),
                             &mut io::stdout().lock(),
-                            "{}",
-                            source_kind.diff(&transformed, Some(path)).unwrap()
                         )?;
                     }
                     flags::FixMode::Generate => {}
@@ -443,11 +442,7 @@ pub(crate) fn lint_stdin(
                 flags::FixMode::Diff => {
                     // But only write a diff if it's non-empty.
                     if !fixed.is_empty() {
-                        write!(
-                            &mut io::stdout().lock(),
-                            "{}",
-                            source_kind.diff(&transformed, path).unwrap()
-                        )?;
+                        source_kind.diff(transformed.as_ref(), path, &mut io::stdout().lock())?;
                     }
                 }
                 flags::FixMode::Generate => {}

crates/ruff/src/lib.rs

@@ -2,13 +2,11 @@
 
 use std::fs::File;
 use std::io::{self, stdout, BufWriter, Write};
-use std::num::NonZeroUsize;
 use std::path::{Path, PathBuf};
 use std::process::ExitCode;
 use std::sync::mpsc::channel;
 
 use anyhow::Result;
-use args::{GlobalConfigArgs, ServerCommand};
 use clap::CommandFactory;
 use colored::Colorize;
 use log::warn;
@@ -20,7 +18,7 @@ use ruff_linter::settings::types::SerializationFormat;
 use ruff_linter::{fs, warn_user, warn_user_once};
 use ruff_workspace::Settings;
 
-use crate::args::{Args, CheckCommand, Command, FormatCommand};
+use crate::args::{Args, CheckCommand, Command, FormatCommand, HelpFormat};
 use crate::printer::{Flags as PrinterFlags, Printer};
 
 pub mod args;
@@ -116,12 +114,20 @@ fn resolve_default_files(files: Vec<PathBuf>, is_stdin: bool) -> Vec<PathBuf> {
     }
 }
 
+/// Get the actual value of the `format` desired from either `output_format`
+/// or `format`, and warn the user if they're using the deprecated form.
+fn resolve_help_output_format(output_format: HelpFormat, format: Option<HelpFormat>) -> HelpFormat {
+    if format.is_some() {
+        warn_user!("The `--format` argument is deprecated. Use `--output-format` instead.");
+    }
+    format.unwrap_or(output_format)
+}
+
 pub fn run(
     Args {
         command,
-        global_options,
+        log_level_args,
     }: Args,
-    deprecated_alias_warning: Option<&'static str>,
 ) -> Result<ExitStatus> {
     {
         let default_panic_hook = std::panic::take_hook();
@@ -149,11 +155,8 @@ pub fn run(
     #[cfg(windows)]
     assert!(colored::control::set_virtual_terminal(true).is_ok());
 
-    set_up_logging(global_options.log_level())?;
-
-    if let Some(deprecated_alias_warning) = deprecated_alias_warning {
-        warn_user!("{}", deprecated_alias_warning);
-    }
+    let log_level = LogLevel::from(&log_level_args);
+    set_up_logging(&log_level)?;
 
     match command {
         Command::Version { output_format } => {
@@ -163,8 +166,10 @@ pub fn run(
         Command::Rule {
             rule,
             all,
-            output_format,
+            format,
+            mut output_format,
         } => {
+            output_format = resolve_help_output_format(output_format, format);
             if all {
                 commands::rule::rules(output_format)?;
             }
@@ -177,51 +182,47 @@ pub fn run(
             commands::config::config(option.as_deref())?;
             Ok(ExitStatus::Success)
         }
-        Command::Linter { output_format } => {
+        Command::Linter {
+            format,
+            mut output_format,
+        } => {
+            output_format = resolve_help_output_format(output_format, format);
             commands::linter::linter(output_format)?;
             Ok(ExitStatus::Success)
         }
         Command::Clean => {
-            commands::clean::clean(global_options.log_level())?;
+            commands::clean::clean(log_level)?;
             Ok(ExitStatus::Success)
         }
         Command::GenerateShellCompletion { shell } => {
             shell.generate(&mut Args::command(), &mut stdout());
             Ok(ExitStatus::Success)
         }
-        Command::Check(args) => check(args, global_options),
-        Command::Format(args) => format(args, global_options),
-        Command::Server(args) => server(args, global_options.log_level()),
+        Command::Check(args) => check(args, log_level),
+        Command::Format(args) => format(args, log_level),
     }
 }
 
-fn format(args: FormatCommand, global_options: GlobalConfigArgs) -> Result<ExitStatus> {
-    let (cli, config_arguments) = args.partition(global_options)?;
+fn format(args: FormatCommand, log_level: LogLevel) -> Result<ExitStatus> {
+    let (cli, config_arguments) = args.partition()?;
 
     if is_stdin(&cli.files, cli.stdin_filename.as_deref()) {
         commands::format_stdin::format_stdin(&cli, &config_arguments)
     } else {
-        commands::format::format(cli, &config_arguments)
+        commands::format::format(cli, &config_arguments, log_level)
     }
 }
 
-fn server(args: ServerCommand, log_level: LogLevel) -> Result<ExitStatus> {
-    let ServerCommand { preview } = args;
-    // by default, we set the number of worker threads to `num_cpus`, with a maximum of 4.
-    let worker_threads = num_cpus::get().max(4);
-    commands::server::run_server(
-        preview,
-        NonZeroUsize::try_from(worker_threads).expect("a non-zero worker thread count"),
-        log_level,
-    )
-}
-
-pub fn check(args: CheckCommand, global_options: GlobalConfigArgs) -> Result<ExitStatus> {
-    let (cli, config_arguments) = args.partition(global_options)?;
+pub fn check(args: CheckCommand, log_level: LogLevel) -> Result<ExitStatus> {
+    let (cli, config_arguments) = args.partition()?;
 
     // Construct the "default" settings. These are used when no `pyproject.toml`
     // files are present, or files are injected from outside of the hierarchy.
-    let pyproject_config = resolve::resolve(&config_arguments, cli.stdin_filename.as_deref())?;
+    let pyproject_config = resolve::resolve(
+        cli.isolated,
+        &config_arguments,
+        cli.stdin_filename.as_deref(),
+    )?;
 
     let mut writer: Box<dyn Write> = match cli.output_file {
         Some(path) if !cli.watch => {
@@ -312,7 +313,7 @@ pub fn check(args: CheckCommand, global_options: GlobalConfigArgs) -> Result<Exi
         }
         let modifications =
             commands::add_noqa::add_noqa(&files, &pyproject_config, &config_arguments)?;
-        if modifications > 0 && config_arguments.log_level >= LogLevel::Default {
+        if modifications > 0 && log_level >= LogLevel::Default {
             let s = if modifications == 1 { "" } else { "s" };
             #[allow(clippy::print_stderr)]
             {
@@ -324,7 +325,7 @@ pub fn check(args: CheckCommand, global_options: GlobalConfigArgs) -> Result<Exi
 
     let printer = Printer::new(
         output_format,
-        config_arguments.log_level,
+        log_level,
         fix_mode,
         unsafe_fixes,
         printer_flags,
@@ -381,8 +382,11 @@ pub fn check(args: CheckCommand, global_options: GlobalConfigArgs) -> Result<Exi
                     };
 
                     if matches!(change_kind, ChangeKind::Configuration) {
-                        pyproject_config =
-                            resolve::resolve(&config_arguments, cli.stdin_filename.as_deref())?;
+                        pyproject_config = resolve::resolve(
+                            cli.isolated,
+                            &config_arguments,
+                            cli.stdin_filename.as_deref(),
+                        )?;
                     }
                     Printer::clear_screen()?;
                     printer.write_to_user("File change detected...\n");

crates/ruff/src/main.rs

@@ -27,42 +27,26 @@ pub fn main() -> ExitCode {
     let mut args =
         argfile::expand_args_from(args, argfile::parse_fromfile, argfile::PREFIX).unwrap();
 
-    // We can't use `warn_user` here because logging isn't set up at this point
-    // and we also don't know if the user runs ruff with quiet.
-    // Keep the message and pass it to `run` that is responsible for emitting the warning.
-    let deprecated_alias_warning = match args.get(1).and_then(|arg| arg.to_str()) {
-        // Deprecated aliases that are handled by clap
-        Some("--explain") => {
-            Some("`ruff --explain <RULE>` is deprecated. Use `ruff rule <RULE>` instead.")
-        }
-        Some("--clean") => {
-            Some("`ruff --clean` is deprecated. Use `ruff clean` instead.")
-        }
-        Some("--generate-shell-completion") => {
-            Some("`ruff --generate-shell-completion <SHELL>` is deprecated. Use `ruff generate-shell-completion <SHELL>` instead.")
-        }
-        // Deprecated `ruff` alias to `ruff check`
-        // Clap doesn't support default subcommands but we want to run `check` by
-        // default for convenience and backwards-compatibility, so we just
-        // preprocess the arguments accordingly before passing them to Clap.
-        Some(arg) if !Command::has_subcommand(arg)
+    // Clap doesn't support default subcommands but we want to run `check` by
+    // default for convenience and backwards-compatibility, so we just
+    // preprocess the arguments accordingly before passing them to Clap.
+    if let Some(arg) = args.get(1) {
+        if arg
+            .to_str()
+            .is_some_and(|arg| !Command::has_subcommand(rewrite_legacy_subcommand(arg)))
             && arg != "-h"
             && arg != "--help"
             && arg != "-V"
             && arg != "--version"
-            && arg != "help" => {
-
-            {
-                args.insert(1, "check".into());
-                Some("`ruff <path>` is deprecated. Use `ruff check <path>` instead.")
-            }
-        },
-        _ => None
-    };
+            && arg != "help"
+        {
+            args.insert(1, "check".into());
+        }
+    }
 
     let args = Args::parse_from(args);
 
-    match run(args, deprecated_alias_warning) {
+    match run(args) {
         Ok(code) => code.into(),
         Err(err) => {
             #[allow(clippy::print_stderr)]
@@ -81,3 +65,12 @@ pub fn main() -> ExitCode {
         }
     }
 }
+
+fn rewrite_legacy_subcommand(cmd: &str) -> &str {
+    match cmd {
+        "--explain" => "rule",
+        "--clean" => "clean",
+        "--generate-shell-completion" => "generate-shell-completion",
+        cmd => cmd,
+    }
+}

crates/ruff/src/panic.rs

@@ -16,7 +16,7 @@ impl std::fmt::Display for PanicError {
 }
 
 thread_local! {
-    static LAST_PANIC: std::cell::Cell<Option<PanicError>> = const { std::cell::Cell::new(None) };
+    static LAST_PANIC: std::cell::Cell<Option<PanicError>> = std::cell::Cell::new(None);
 }
 
 /// [`catch_unwind`](std::panic::catch_unwind) wrapper that sets a custom [`set_hook`](std::panic::set_hook)

crates/ruff/src/printer.rs

@@ -118,8 +118,6 @@ impl Printer {
                 } else if remaining > 0 {
                     let s = if remaining == 1 { "" } else { "s" };
                     writeln!(writer, "Found {remaining} error{s}.")?;
-                } else if remaining == 0 {
-                    writeln!(writer, "All checks passed!")?;
                 }
 
                 if let Some(fixables) = fixables {

crates/ruff/src/resolve.rs

@@ -1,4 +1,4 @@
-use std::path::Path;
+use std::path::{Path, PathBuf};
 
 use anyhow::Result;
 use log::debug;
@@ -16,11 +16,12 @@ use crate::args::ConfigArguments;
 /// Resolve the relevant settings strategy and defaults for the current
 /// invocation.
 pub fn resolve(
+    isolated: bool,
     config_arguments: &ConfigArguments,
     stdin_filename: Option<&Path>,
 ) -> Result<PyprojectConfig> {
     // First priority: if we're running in isolated mode, use the default settings.
-    if config_arguments.isolated {
+    if isolated {
         let config = config_arguments.transform(Configuration::default());
         let settings = config.into_settings(&path_dedot::CWD)?;
         debug!("Isolated mode, not reading any pyproject.toml");
@@ -34,8 +35,13 @@ pub fn resolve(
     // Second priority: the user specified a `pyproject.toml` file. Use that
     // `pyproject.toml` for _all_ configuration, and resolve paths relative to the
     // current working directory. (This matches ESLint's behavior.)
-    if let Some(pyproject) = config_arguments.config_file() {
-        let settings = resolve_root_settings(pyproject, Relativity::Cwd, config_arguments)?;
+    if let Some(pyproject) = config_arguments
+        .config_file()
+        .map(|config| config.display().to_string())
+        .map(|config| shellexpand::full(&config).map(|config| PathBuf::from(config.as_ref())))
+        .transpose()?
+    {
+        let settings = resolve_root_settings(&pyproject, Relativity::Cwd, config_arguments)?;
         debug!(
             "Using user-specified configuration file at: {}",
             pyproject.display()
@@ -43,7 +49,7 @@ pub fn resolve(
         return Ok(PyprojectConfig::new(
             PyprojectDiscoveryStrategy::Fixed,
             settings,
-            Some(pyproject.to_path_buf()),
+            Some(pyproject),
         ));
     }
 

crates/ruff/src/version.rs

@@ -70,7 +70,7 @@ pub(crate) fn version() -> VersionInfo {
 
 #[cfg(test)]
 mod tests {
-    use insta::{assert_json_snapshot, assert_snapshot};
+    use insta::{assert_display_snapshot, assert_json_snapshot};
 
     use super::{CommitInfo, VersionInfo};
 
@@ -80,7 +80,7 @@ mod tests {
             version: "0.0.0".to_string(),
             commit_info: None,
         };
-        assert_snapshot!(version);
+        assert_display_snapshot!(version);
     }
 
     #[test]
@@ -95,7 +95,7 @@ mod tests {
                 commits_since_last_tag: 0,
             }),
         };
-        assert_snapshot!(version);
+        assert_display_snapshot!(version);
     }
 
     #[test]
@@ -110,7 +110,7 @@ mod tests {
                 commits_since_last_tag: 24,
             }),
         };
-        assert_snapshot!(version);
+        assert_display_snapshot!(version);
     }
 
     #[test]

crates/ruff/tests/deprecation.rs

@@ -12,10 +12,9 @@ const STDIN: &str = "l = 1";
 fn ruff_check(show_source: Option<bool>, output_format: Option<String>) -> Command {
     let mut cmd = Command::new(get_cargo_bin(BIN_NAME));
     let output_format = output_format.unwrap_or(format!("{}", SerializationFormat::default(false)));
-    cmd.arg("check")
-        .arg("--output-format")
-        .arg(output_format)
-        .arg("--no-cache");
+    cmd.arg("--output-format");
+    cmd.arg(output_format);
+    cmd.arg("--no-cache");
     match show_source {
         Some(true) => {
             cmd.arg("--show-source");

crates/ruff/tests/format.rs

@@ -7,15 +7,10 @@ use std::str;
 
 use anyhow::Result;
 use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};
-use regex::escape;
 use tempfile::TempDir;
 
 const BIN_NAME: &str = "ruff";
 
-fn tempdir_filter(tempdir: &TempDir) -> String {
-    format!(r"{}\\?/?", escape(tempdir.path().to_str().unwrap()))
-}
-
 #[test]
 fn default_options() {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
@@ -23,7 +18,7 @@ fn default_options() {
         .arg("-")
         .pass_stdin(r#"
 def foo(arg1, arg2,):
-    print('Shouldn\'t change quotes')
+    print('Should\'t change quotes')
 
 
 if condition:
@@ -38,7 +33,7 @@ if condition:
         arg1,
         arg2,
     ):
-        print("Shouldn't change quotes")
+        print("Should't change quotes")
 
 
     if condition:
@@ -111,7 +106,7 @@ fn nonexistent_config_file() {
            option
 
     It looks like you were trying to pass a path to a configuration file.
-    The path `foo.toml` does not point to a configuration file
+    The path `foo.toml` does not exist
 
     For more information, try '--help'.
     "###);
@@ -152,29 +147,28 @@ fn too_many_config_files() -> Result<()> {
     let ruff2_dot_toml = tempdir.path().join("ruff2.toml");
     fs::File::create(&ruff_dot_toml)?;
     fs::File::create(&ruff2_dot_toml)?;
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/")]
-    }, {
-        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
+    let expected_stderr = format!(
+        "\
+ruff failed
+  Cause: You cannot specify more than one configuration file on the command line.
+
+  tip: remove either `--config={}` or `--config={}`.
+       For more information, try `--help`.
+
+",
+        ruff_dot_toml.display(),
+        ruff2_dot_toml.display(),
+    );
+    let cmd = Command::new(get_cargo_bin(BIN_NAME))
         .arg("format")
         .arg("--config")
         .arg(&ruff_dot_toml)
         .arg("--config")
         .arg(&ruff2_dot_toml)
-        .arg("."), @r###"
-            success: false
-            exit_code: 2
-            ----- stdout -----
-
-            ----- stderr -----
-            ruff failed
-              Cause: You cannot specify more than one configuration file on the command line.
-
-              tip: remove either `--config=[TMP]/ruff.toml` or `--config=[TMP]/ruff2.toml`.
-                   For more information, try `--help`.
-
-            "###);
-    });
+        .arg(".")
+        .output()?;
+    let stderr = std::str::from_utf8(&cmd.stderr)?;
+    assert_eq!(stderr, expected_stderr);
     Ok(())
 }
 
@@ -183,29 +177,27 @@ fn config_file_and_isolated() -> Result<()> {
     let tempdir = TempDir::new()?;
     let ruff_dot_toml = tempdir.path().join("ruff.toml");
     fs::File::create(&ruff_dot_toml)?;
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/")]
-    }, {
-        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
+    let expected_stderr = format!(
+        "\
+ruff failed
+  Cause: The argument `--config={}` cannot be used with `--isolated`
+
+  tip: You cannot specify a configuration file and also specify `--isolated`,
+       as `--isolated` causes ruff to ignore all configuration files.
+       For more information, try `--help`.
+
+",
+        ruff_dot_toml.display(),
+    );
+    let cmd = Command::new(get_cargo_bin(BIN_NAME))
         .arg("format")
         .arg("--config")
         .arg(&ruff_dot_toml)
         .arg("--isolated")
-        .arg("."), @r###"
-        success: false
-        exit_code: 2
-        ----- stdout -----
-
-        ----- stderr -----
-        ruff failed
-          Cause: The argument `--config=[TMP]/ruff.toml` cannot be used with `--isolated`
-
-          tip: You cannot specify a configuration file and also specify `--isolated`,
-               as `--isolated` causes ruff to ignore all configuration files.
-               For more information, try `--help`.
-
-        "###);
-    });
+        .arg(".")
+        .output()?;
+    let stderr = std::str::from_utf8(&cmd.stderr)?;
+    assert_eq!(stderr, expected_stderr);
     Ok(())
 }
 
@@ -358,52 +350,58 @@ def f(x):
     '''
     pass
 "#), @r###"
-    success: true
-    exit_code: 0
-    ----- stdout -----
-    def f(x):
-        """
-        Something about `f`. And an example:
+success: true
+exit_code: 0
+----- stdout -----
+def f(x):
+    """
+    Something about `f`. And an example:
 
-        .. code-block:: python
+    .. code-block:: python
 
-            foo, bar, quux = (
-                this_is_a_long_line(
-                    lion,
-                    hippo,
-                    lemur,
-                    bear,
-                )
-            )
-
-        Another example:
-
-        ```py
-        foo, bar, quux = (
-            this_is_a_long_line(
-                lion,
-                hippo,
-                lemur,
-                bear,
-            )
+        (
+            foo,
+            bar,
+            quux,
+        ) = this_is_a_long_line(
+            lion,
+            hippo,
+            lemur,
+            bear,
         )
-        ```
 
-        And another:
+    Another example:
 
-        >>> foo, bar, quux = (
-        ...     this_is_a_long_line(
-        ...         lion,
-        ...         hippo,
-        ...         lemur,
-        ...         bear,
-        ...     )
-        ... )
-        """
-        pass
+    ```py
+    (
+        foo,
+        bar,
+        quux,
+    ) = this_is_a_long_line(
+        lion,
+        hippo,
+        lemur,
+        bear,
+    )
+    ```
 
-    ----- stderr -----
-    "###);
+    And another:
+
+    >>> (
+    ...     foo,
+    ...     bar,
+    ...     quux,
+    ... ) = this_is_a_long_line(
+    ...     lion,
+    ...     hippo,
+    ...     lemur,
+    ...     bear,
+    ... )
+    """
+    pass
+
+----- stderr -----
+"###);
     Ok(())
 }
 

crates/ruff/tests/integration_test.rs

@@ -71,7 +71,6 @@ impl<'a> RuffCheck<'a> {
     /// Generate a [`Command`] for the `ruff check` command.
     fn build(self) -> Command {
         let mut cmd = ruff_cmd();
-        cmd.arg("check");
         if let Some(output_format) = self.output_format {
             cmd.args(["--output-format", output_format]);
         }
@@ -101,7 +100,6 @@ fn stdin_success() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -223,7 +221,6 @@ fn stdin_source_type_pyi() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -592,7 +589,6 @@ fn stdin_fix_when_no_issues_should_still_print_contents() {
     print(sys.version)
 
     ----- stderr -----
-    All checks passed!
     "###);
 }
 
@@ -809,13 +805,13 @@ fn full_output_format() {
 }
 
 #[test]
-fn rule_f401() {
-    assert_cmd_snapshot!(ruff_cmd().args(["rule", "F401"]));
+fn explain_status_codes_f401() {
+    assert_cmd_snapshot!(ruff_cmd().args(["--explain", "F401"]));
 }
 
 #[test]
-fn rule_invalid_rule_name() {
-    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404"]), @r###"
+fn explain_status_codes_ruf404() {
+    assert_cmd_snapshot!(ruff_cmd().args(["--explain", "RUF404"]), @r###"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1026,7 +1022,6 @@ fn preview_disabled_direct() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     warning: Selection `RUF911` has no effect because preview is not enabled.
@@ -1043,7 +1038,6 @@ fn preview_disabled_prefix_empty() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     warning: Selection `RUF91` has no effect because preview is not enabled.
@@ -1060,7 +1054,6 @@ fn preview_disabled_does_not_warn_for_empty_ignore_selections() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -1076,7 +1069,6 @@ fn preview_disabled_does_not_warn_for_empty_fixable_selections() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -1182,7 +1174,6 @@ fn removed_indirect() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -1213,7 +1204,6 @@ fn redirect_indirect() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -1316,7 +1306,6 @@ fn deprecated_indirect_preview_enabled() {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -1353,14 +1342,13 @@ fn unreadable_pyproject_toml() -> Result<()> {
     // Create an empty file with 000 permissions
     fs::OpenOptions::new()
         .create(true)
-        .truncate(true)
         .write(true)
         .mode(0o000)
         .open(pyproject_toml)?;
 
     // Don't `--isolated` since the configuration discovery is where the error happens
     let args = Args::parse_from(["", "check", "--no-cache", tempdir.path().to_str().unwrap()]);
-    let err = run(args, None).err().context("Unexpected success")?;
+    let err = run(args).err().context("Unexpected success")?;
     assert_eq!(
         err.chain()
             .map(std::string::ToString::to_string)
@@ -1394,7 +1382,6 @@ fn unreadable_dir() -> Result<()> {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     warning: Encountered error: Permission denied (os error 13)
@@ -1909,7 +1896,6 @@ def log(x, base) -> float:
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###

crates/ruff/tests/lint.rs

@@ -12,7 +12,7 @@ use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};
 use tempfile::TempDir;
 
 const BIN_NAME: &str = "ruff";
-const STDIN_BASE_OPTIONS: &[&str] = &["check", "--no-cache", "--output-format", "concise"];
+const STDIN_BASE_OPTIONS: &[&str] = &["--no-cache", "--output-format", "concise"];
 
 fn tempdir_filter(tempdir: &TempDir) -> String {
     format!(r"{}\\?/?", escape(tempdir.path().to_str().unwrap()))
@@ -246,6 +246,7 @@ OTHER = "OTHER"
     }, {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
         .current_dir(tempdir.path())
+        .arg("check")
         .args(STDIN_BASE_OPTIONS)
         .args(["--config", &ruff_toml.file_name().unwrap().to_string_lossy()])
         // Explicitly pass test.py, should be linted regardless of it being excluded by lint.exclude
@@ -292,6 +293,7 @@ inline-quotes = "single"
     }, {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
         .current_dir(tempdir.path())
+        .arg("check")
         .args(STDIN_BASE_OPTIONS)
         .args(["--config", &ruff_toml.file_name().unwrap().to_string_lossy()])
         .args(["--stdin-filename", "generated.py"])
@@ -384,6 +386,7 @@ inline-quotes = "single"
     }, {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
         .current_dir(tempdir.path())
+        .arg("check")
         .args(STDIN_BASE_OPTIONS)
         .args(["--config", &ruff_toml.file_name().unwrap().to_string_lossy()])
         .args(["--stdin-filename", "generated.py"])
@@ -432,6 +435,7 @@ inline-quotes = "single"
     }, {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
         .current_dir(tempdir.path())
+        .arg("check")
         .args(STDIN_BASE_OPTIONS)
         .args(["--config", &ruff_toml.file_name().unwrap().to_string_lossy()])
         .args(["--stdin-filename", "generated.py"])
@@ -491,12 +495,12 @@ ignore = ["D203", "D212"]
     }, {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
         .current_dir(sub_dir)
+        .arg("check")
         .args(STDIN_BASE_OPTIONS)
         , @r###"
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     warning: No Python files found under the given path(s)
@@ -523,7 +527,7 @@ fn nonexistent_config_file() {
            option
 
     It looks like you were trying to pass a path to a configuration file.
-    The path `foo.toml` does not point to a configuration file
+    The path `foo.toml` does not exist
 
     For more information, try '--help'.
     "###);
@@ -591,24 +595,6 @@ fn too_many_config_files() -> Result<()> {
     Ok(())
 }
 
-#[test]
-fn extend_passed_via_config_argument() {
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .args(["--config", "extend = 'foo.toml'", "."]), @r###"
-    success: false
-    exit_code: 2
-    ----- stdout -----
-
-    ----- stderr -----
-    error: invalid value 'extend = 'foo.toml'' for '--config <CONFIG_OPTION>'
-
-      tip: Cannot include `extend` in a --config flag value
-
-    For more information, try '--help'.
-    "###);
-}
-
 #[test]
 fn config_file_and_isolated() -> Result<()> {
     let tempdir = TempDir::new()?;
@@ -834,7 +820,6 @@ fn complex_config_setting_overridden_via_cli() -> Result<()> {
     success: true
     exit_code: 0
     ----- stdout -----
-    All checks passed!
 
     ----- stderr -----
     "###);
@@ -851,7 +836,7 @@ fn deprecated_config_option_overridden_via_cli() {
     success: false
     exit_code: 1
     ----- stdout -----
-    -:1:7: N801 Class name `lowercase` should use CapWords convention
+    -:1:7: N801 Class name `lowercase` should use CapWords convention 
     Found 1 error.
 
     ----- stderr -----
@@ -918,6 +903,7 @@ include = ["*.ipy"]
     }, {
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
         .current_dir(tempdir.path())
+        .arg("check")
         .args(STDIN_BASE_OPTIONS)
         .args(["--config", &ruff_toml.file_name().unwrap().to_string_lossy()])
         .args(["--extension", "ipy:ipynb"])
@@ -935,236 +921,3 @@ include = ["*.ipy"]
 
     Ok(())
 }
-
-#[test]
-fn file_noqa_external() -> Result<()> {
-    let tempdir = TempDir::new()?;
-    let ruff_toml = tempdir.path().join("ruff.toml");
-    fs::write(
-        &ruff_toml,
-        r#"
-[lint]
-external = ["AAA"]
-"#,
-    )?;
-
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/")]
-    }, {
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .arg("--config")
-        .arg(&ruff_toml)
-        .arg("-")
-        .pass_stdin(r#"
-# flake8: noqa: AAA101, BBB102
-import os
-"#), @r###"
-    success: false
-    exit_code: 1
-    ----- stdout -----
-    -:3:8: F401 [*] `os` imported but unused
-    Found 1 error.
-    [*] 1 fixable with the `--fix` option.
-
-    ----- stderr -----
-    warning: Invalid rule code provided to `# ruff: noqa` at -:2: BBB102
-    "###);
-    });
-
-    Ok(())
-}
-
-#[test]
-fn required_version_exact_mismatch() -> Result<()> {
-    let version = env!("CARGO_PKG_VERSION");
-
-    let tempdir = TempDir::new()?;
-    let ruff_toml = tempdir.path().join("ruff.toml");
-    fs::write(
-        &ruff_toml,
-        r#"
-required-version = "0.1.0"
-"#,
-    )?;
-
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/"), (version, "[VERSION]")]
-    }, {
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .arg("--config")
-        .arg(&ruff_toml)
-        .arg("-")
-        .pass_stdin(r#"
-import os
-"#), @r###"
-    success: false
-    exit_code: 2
-    ----- stdout -----
-
-    ----- stderr -----
-    ruff failed
-      Cause: Required version `==0.1.0` does not match the running version `[VERSION]`
-    "###);
-    });
-
-    Ok(())
-}
-
-#[test]
-fn required_version_exact_match() -> Result<()> {
-    let version = env!("CARGO_PKG_VERSION");
-
-    let tempdir = TempDir::new()?;
-    let ruff_toml = tempdir.path().join("ruff.toml");
-    fs::write(
-        &ruff_toml,
-        format!(
-            r#"
-required-version = "{version}"
-"#
-        ),
-    )?;
-
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/"), (version, "[VERSION]")]
-    }, {
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .arg("--config")
-        .arg(&ruff_toml)
-        .arg("-")
-        .pass_stdin(r#"
-import os
-"#), @r###"
-    success: false
-    exit_code: 1
-    ----- stdout -----
-    -:2:8: F401 [*] `os` imported but unused
-    Found 1 error.
-    [*] 1 fixable with the `--fix` option.
-
-    ----- stderr -----
-    "###);
-    });
-
-    Ok(())
-}
-
-#[test]
-fn required_version_bound_mismatch() -> Result<()> {
-    let version = env!("CARGO_PKG_VERSION");
-
-    let tempdir = TempDir::new()?;
-    let ruff_toml = tempdir.path().join("ruff.toml");
-    fs::write(
-        &ruff_toml,
-        format!(
-            r#"
-required-version = ">{version}"
-"#
-        ),
-    )?;
-
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/"), (version, "[VERSION]")]
-    }, {
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .arg("--config")
-        .arg(&ruff_toml)
-        .arg("-")
-        .pass_stdin(r#"
-import os
-"#), @r###"
-    success: false
-    exit_code: 2
-    ----- stdout -----
-
-    ----- stderr -----
-    ruff failed
-      Cause: Required version `>[VERSION]` does not match the running version `[VERSION]`
-    "###);
-    });
-
-    Ok(())
-}
-
-#[test]
-fn required_version_bound_match() -> Result<()> {
-    let version = env!("CARGO_PKG_VERSION");
-
-    let tempdir = TempDir::new()?;
-    let ruff_toml = tempdir.path().join("ruff.toml");
-    fs::write(
-        &ruff_toml,
-        r#"
-required-version = ">=0.1.0"
-"#,
-    )?;
-
-    insta::with_settings!({
-        filters => vec![(tempdir_filter(&tempdir).as_str(), "[TMP]/"), (version, "[VERSION]")]
-    }, {
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .arg("--config")
-        .arg(&ruff_toml)
-        .arg("-")
-        .pass_stdin(r#"
-import os
-"#), @r###"
-    success: false
-    exit_code: 1
-    ----- stdout -----
-    -:2:8: F401 [*] `os` imported but unused
-    Found 1 error.
-    [*] 1 fixable with the `--fix` option.
-
-    ----- stderr -----
-    "###);
-    });
-
-    Ok(())
-}
-
-/// Expand environment variables in `--config` paths provided via the CLI.
-#[test]
-fn config_expand() -> Result<()> {
-    let tempdir = TempDir::new()?;
-    let ruff_toml = tempdir.path().join("ruff.toml");
-    fs::write(
-        ruff_toml,
-        r#"
-[lint]
-select = ["F"]
-ignore = ["F841"]
-"#,
-    )?;
-
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(STDIN_BASE_OPTIONS)
-        .arg("--config")
-        .arg("${NAME}.toml")
-        .env("NAME", "ruff")
-        .arg("-")
-        .current_dir(tempdir.path())
-        .pass_stdin(r#"
-import os
-
-def func():
-    x = 1
-"#), @r###"
-    success: false
-    exit_code: 1
-    ----- stdout -----
-    -:2:8: F401 [*] `os` imported but unused
-    Found 1 error.
-    [*] 1 fixable with the `--fix` option.
-
-    ----- stderr -----
-    "###);
-
-    Ok(())
-}

crates/ruff/tests/snapshots/integration_test__explain_status_codes_f401.snap

@@ -3,7 +3,7 @@ source: crates/ruff/tests/integration_test.rs
 info:
   program: ruff
   args:
-    - rule
+    - "--explain"
     - F401
 ---
 success: true
@@ -34,11 +34,6 @@ marking it as unused, as in:
 from module import member as member
 ```
 
-## Fix safety
-
-When `ignore_init_module_imports` is disabled, fixes can remove for unused imports in `__init__` files.
-These fixes are considered unsafe because they can change the public interface.
-
 ## Example
 ```python
 import numpy as np  # unused import
@@ -73,3 +68,4 @@ else:
 - [Typing documentation: interface conventions](https://typing.readthedocs.io/en/latest/source/libraries.html#library-interface-public-and-private-symbols)
 
 ----- stderr -----
+

crates/ruff/tests/snapshots/show_settings__display_default_settings.snap

@@ -44,6 +44,7 @@ file_resolver.exclude = [
 	"__pypackages__",
 	"_build",
 	"buck-out",
+	"build",
 	"dist",
 	"node_modules",
 	"site-packages",
@@ -201,7 +202,7 @@ linter.allowed_confusables = []
 linter.builtins = []
 linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
 linter.external = []
-linter.ignore_init_module_imports = true
+linter.ignore_init_module_imports = false
 linter.logger_objects = []
 linter.namespace_packages = []
 linter.src = [
@@ -231,7 +232,7 @@ linter.flake8_bandit.check_typed_exception = false
 linter.flake8_bugbear.extend_immutable_calls = []
 linter.flake8_builtins.builtins_ignorelist = []
 linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
-linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+(\(C\)\s+)?\d{4}(-\d{4})*
 linter.flake8_copyright.author = none
 linter.flake8_copyright.min_file_size = 0
 linter.flake8_errmsg.max_string_length = 0
@@ -241,22 +242,7 @@ linter.flake8_gettext.functions_names = [
 	ngettext,
 ]
 linter.flake8_implicit_str_concat.allow_multiline = true
-linter.flake8_import_conventions.aliases = {
-	altair = alt,
-	holoviews = hv,
-	matplotlib = mpl,
-	matplotlib.pyplot = plt,
-	networkx = nx,
-	numpy = np,
-	pandas = pd,
-	panel = pn,
-	plotly.express = px,
-	polars = pl,
-	pyarrow = pa,
-	seaborn = sns,
-	tensorflow = tf,
-	tkinter = tk,
-}
+linter.flake8_import_conventions.aliases = {"matplotlib": "mpl", "matplotlib.pyplot": "plt", "pandas": "pd", "seaborn": "sns", "tensorflow": "tf", "networkx": "nx", "plotly.express": "px", "polars": "pl", "numpy": "np", "panel": "pn", "pyarrow": "pa", "altair": "alt", "tkinter": "tk", "holoviews": "hv"}
 linter.flake8_import_conventions.banned_aliases = {}
 linter.flake8_import_conventions.banned_from = []
 linter.flake8_pytest_style.fixture_parentheses = true
@@ -326,7 +312,6 @@ linter.isort.section_order = [
 	known { type = first_party },
 	known { type = local_folder },
 ]
-linter.isort.default_section = known { type = third_party }
 linter.isort.no_sections = false
 linter.isort.from_first = false
 linter.isort.length_sort = false
@@ -381,3 +366,4 @@ formatter.docstring_code_format = disabled
 formatter.docstring_code_line_width = dynamic
 
 ----- stderr -----
+

crates/ruff/tests/version.rs

@@ -1,105 +0,0 @@
-//! Tests for the --version command
-use std::fs;
-use std::process::Command;
-
-use anyhow::Result;
-use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};
-use tempfile::TempDir;
-
-const BIN_NAME: &str = "ruff";
-const VERSION_FILTER: [(&str, &str); 1] = [(
-    r"\d+\.\d+\.\d+(\+\d+)?( \(\w{9} \d\d\d\d-\d\d-\d\d\))?",
-    "[VERSION]",
-)];
-
-#[test]
-fn version_basics() {
-    insta::with_settings!({filters => VERSION_FILTER.to_vec()}, {
-        assert_cmd_snapshot!(
-            Command::new(get_cargo_bin(BIN_NAME)).arg("version"), @r###"
-        success: true
-        exit_code: 0
-        ----- stdout -----
-        ruff [VERSION]
-
-        ----- stderr -----
-        "###
-        );
-    });
-}
-
-/// `--config` is a global option,
-/// so it's allowed to pass --config to subcommands such as `version`
-/// -- the flag is simply ignored
-#[test]
-fn config_option_allowed_but_ignored() -> Result<()> {
-    let tempdir = TempDir::new()?;
-    let ruff_dot_toml = tempdir.path().join("ruff.toml");
-    fs::File::create(&ruff_dot_toml)?;
-    insta::with_settings!({filters => VERSION_FILTER.to_vec()}, {
-        assert_cmd_snapshot!(
-            Command::new(get_cargo_bin(BIN_NAME))
-                .arg("version")
-                .arg("--config")
-                .arg(&ruff_dot_toml)
-                .args(["--config", "lint.isort.extra-standard-library = ['foo', 'bar']"]), @r###"
-        success: true
-        exit_code: 0
-        ----- stdout -----
-        ruff [VERSION]
-
-        ----- stderr -----
-        "###
-        );
-    });
-    Ok(())
-}
-#[test]
-fn config_option_ignored_but_validated() {
-    insta::with_settings!({filters => VERSION_FILTER.to_vec()}, {
-        assert_cmd_snapshot!(
-            Command::new(get_cargo_bin(BIN_NAME))
-                .arg("version")
-                .args(["--config", "foo = bar"]), @r###"
-        success: false
-        exit_code: 2
-        ----- stdout -----
-
-        ----- stderr -----
-        error: invalid value 'foo = bar' for '--config <CONFIG_OPTION>'
-
-          tip: A `--config` flag must either be a path to a `.toml` configuration file
-               or a TOML `<KEY> = <VALUE>` pair overriding a specific configuration
-               option
-
-        The supplied argument is not valid TOML:
-
-        TOML parse error at line 1, column 7
-          |
-        1 | foo = bar
-          |       ^
-        invalid string
-        expected `"`, `'`
-
-        For more information, try '--help'.
-        "###
-        );
-    });
-}
-
-/// `--isolated` is also a global option,
-#[test]
-fn isolated_option_allowed() {
-    insta::with_settings!({filters => VERSION_FILTER.to_vec()}, {
-        assert_cmd_snapshot!(
-            Command::new(get_cargo_bin(BIN_NAME)).arg("version").arg("--isolated"), @r###"
-        success: true
-        exit_code: 0
-        ----- stdout -----
-        ruff [VERSION]
-
-        ----- stderr -----
-        "###
-        );
-    });
-}

crates/ruff_dev/Cargo.toml

@@ -22,7 +22,7 @@ ruff_python_formatter = { path = "../ruff_python_formatter" }
 ruff_python_parser = { path = "../ruff_python_parser" }
 ruff_python_stdlib = { path = "../ruff_python_stdlib" }
 ruff_python_trivia = { path = "../ruff_python_trivia" }
-ruff_workspace = { path = "../ruff_workspace", features = ["schemars"] }
+ruff_workspace = { path = "../ruff_workspace", features = ["schemars"]}
 
 anyhow = { workspace = true }
 clap = { workspace = true, features = ["wrap_help"] }
@@ -31,6 +31,7 @@ imara-diff = { workspace = true }
 indicatif = { workspace = true }
 itertools = { workspace = true }
 libcst = { workspace = true }
+once_cell = { workspace = true }
 pretty_assertions = { workspace = true }
 rayon = { workspace = true }
 regex = { workspace = true }

crates/ruff_dev/src/format_dev.rs

@@ -27,7 +27,7 @@ use tracing_subscriber::layer::SubscriberExt;
 use tracing_subscriber::util::SubscriberInitExt;
 use tracing_subscriber::EnvFilter;
 
-use ruff::args::{ConfigArguments, FormatArguments, FormatCommand, GlobalConfigArgs, LogLevelArgs};
+use ruff::args::{ConfigArguments, FormatArguments, FormatCommand, LogLevelArgs};
 use ruff::resolve::resolve;
 use ruff_formatter::{FormatError, LineWidth, PrintError};
 use ruff_linter::logging::LogLevel;
@@ -43,7 +43,7 @@ fn parse_cli(dirs: &[PathBuf]) -> anyhow::Result<(FormatArguments, ConfigArgumen
         .no_binary_name(true)
         .get_matches_from(dirs);
     let arguments: FormatCommand = FormatCommand::from_arg_matches(&args_matches)?;
-    let (cli, config_arguments) = arguments.partition(GlobalConfigArgs::default())?;
+    let (cli, config_arguments) = arguments.partition()?;
     Ok((cli, config_arguments))
 }
 
@@ -52,7 +52,11 @@ fn find_pyproject_config(
     cli: &FormatArguments,
     config_arguments: &ConfigArguments,
 ) -> anyhow::Result<PyprojectConfig> {
-    let mut pyproject_config = resolve(config_arguments, cli.stdin_filename.as_deref())?;
+    let mut pyproject_config = resolve(
+        cli.isolated,
+        config_arguments,
+        cli.stdin_filename.as_deref(),
+    )?;
     // We don't want to format pyproject.toml
     pyproject_config.settings.file_resolver.include = FilePatternSet::try_from_iter([
         FilePattern::Builtin("*.py"),
@@ -134,7 +138,7 @@ impl Statistics {
         }
     }
 
-    /// We currently prefer the similarity index, but i'd like to keep this around
+    /// We currently prefer the the similarity index, but i'd like to keep this around
     #[allow(clippy::cast_precision_loss, unused)]
     pub(crate) fn jaccard_index(&self) -> f32 {
         self.intersection as f32 / (self.black_input + self.ruff_output + self.intersection) as f32

crates/ruff_dev/src/generate_docs.rs

@@ -1,7 +1,6 @@
 //! Generate Markdown documentation for applicable rules.
 #![allow(clippy::print_stdout, clippy::print_stderr)]
 
-use std::collections::HashSet;
 use std::fs;
 use std::path::PathBuf;
 
@@ -98,13 +97,12 @@ pub(crate) fn main(args: &Args) -> Result<()> {
 fn process_documentation(documentation: &str, out: &mut String, rule_name: &str) {
     let mut in_options = false;
     let mut after = String::new();
-    let mut referenced_options = HashSet::new();
 
     // HACK: This is an ugly regex hack that's necessary because mkdocs uses
     // a non-CommonMark-compliant Markdown parser, which doesn't support code
     // tags in link definitions
     // (see https://github.com/Python-Markdown/markdown/issues/280).
-    let documentation = Regex::new(r"\[`([^`]*?)`]($|[^\[(])").unwrap().replace_all(
+    let documentation = Regex::new(r"\[`([^`]*?)`]($|[^\[])").unwrap().replace_all(
         documentation,
         |caps: &Captures| {
             format!(
@@ -137,7 +135,6 @@ fn process_documentation(documentation: &str, out: &mut String, rule_name: &str)
                 let anchor = option.replace('.', "_");
                 out.push_str(&format!("- [`{option}`][{option}]\n"));
                 after.push_str(&format!("[{option}]: ../settings.md#{anchor}\n"));
-                referenced_options.insert(option);
 
                 continue;
             }
@@ -145,20 +142,6 @@ fn process_documentation(documentation: &str, out: &mut String, rule_name: &str)
 
         out.push_str(line);
     }
-
-    let re = Regex::new(r"\[`([^`]*?)`]\[(.*?)]").unwrap();
-    for (_, [option, _]) in re.captures_iter(&documentation).map(|c| c.extract()) {
-        if let Some(OptionEntry::Field(field)) = Options::metadata().find(option) {
-            if referenced_options.insert(option) {
-                let anchor = option.replace('.', "_");
-                after.push_str(&format!("[{option}]: ../settings.md#{anchor}\n"));
-            }
-            if field.deprecated.is_some() {
-                eprintln!("Rule {rule_name} references deprecated option {option}.");
-            }
-        }
-    }
-
     if !after.is_empty() {
         out.push('\n');
         out.push('\n');
@@ -176,7 +159,7 @@ mod tests {
         process_documentation(
             "
 See also [`lint.mccabe.max-complexity`] and [`lint.task-tags`].
-Something [`else`][other]. Some [link](https://example.com).
+Something [`else`][other].
 
 ## Options
 
@@ -191,7 +174,7 @@ Something [`else`][other]. Some [link](https://example.com).
             output,
             "
 See also [`lint.mccabe.max-complexity`][lint.mccabe.max-complexity] and [`lint.task-tags`][lint.task-tags].
-Something [`else`][other]. Some [link](https://example.com).
+Something [`else`][other].
 
 ## Options
 

crates/ruff_dev/src/generate_rules_table.rs

@@ -180,22 +180,8 @@ pub(crate) fn generate() -> String {
             .map(|rule| (rule.upstream_category(&linter), rule))
             .into_group_map();
 
-        let mut rules_by_upstream_category: Vec<_> = rules_by_upstream_category.iter().collect();
-
-        // Sort the upstream categories alphabetically by prefix.
-        rules_by_upstream_category.sort_by(|(a, _), (b, _)| {
-            a.as_ref()
-                .map(|category| category.prefix)
-                .unwrap_or_default()
-                .cmp(
-                    b.as_ref()
-                        .map(|category| category.prefix)
-                        .unwrap_or_default(),
-                )
-        });
-
         if rules_by_upstream_category.len() > 1 {
-            for (opt, rules) in rules_by_upstream_category {
+            for (opt, rules) in &rules_by_upstream_category {
                 if opt.is_some() {
                     let UpstreamCategoryAndPrefix { category, prefix } = opt.unwrap();
                     table_out.push_str(&format!("#### {category} ({prefix})"));

crates/ruff_dev/src/main.rs

@@ -4,8 +4,8 @@
 
 use anyhow::Result;
 use clap::{Parser, Subcommand};
-use ruff::{args::GlobalConfigArgs, check};
-use ruff_linter::logging::set_up_logging;
+use ruff::check;
+use ruff_linter::logging::{set_up_logging, LogLevel};
 use std::process::ExitCode;
 
 mod format_dev;
@@ -28,8 +28,6 @@ const ROOT_DIR: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/../../");
 struct Args {
     #[command(subcommand)]
     command: Command,
-    #[clap(flatten)]
-    global_options: GlobalConfigArgs,
 }
 
 #[derive(Subcommand)]
@@ -59,6 +57,8 @@ enum Command {
     Repeat {
         #[clap(flatten)]
         args: ruff::args::CheckCommand,
+        #[clap(flatten)]
+        log_level_args: ruff::args::LogLevelArgs,
         /// Run this many times
         #[clap(long)]
         repeat: usize,
@@ -75,12 +75,9 @@ enum Command {
 }
 
 fn main() -> Result<ExitCode> {
-    let Args {
-        command,
-        global_options,
-    } = Args::parse();
+    let args = Args::parse();
     #[allow(clippy::print_stdout)]
-    match command {
+    match args.command {
         Command::GenerateAll(args) => generate_all::main(&args)?,
         Command::GenerateJSONSchema(args) => generate_json_schema::main(&args)?,
         Command::GenerateRulesTable => println!("{}", generate_rules_table::generate()),
@@ -92,12 +89,14 @@ fn main() -> Result<ExitCode> {
         Command::PrintTokens(args) => print_tokens::main(&args)?,
         Command::RoundTrip(args) => round_trip::main(&args)?,
         Command::Repeat {
-            args: subcommand_args,
+            args,
             repeat,
+            log_level_args,
         } => {
-            set_up_logging(global_options.log_level())?;
+            let log_level = LogLevel::from(&log_level_args);
+            set_up_logging(&log_level)?;
             for _ in 0..repeat {
-                check(subcommand_args.clone(), global_options.clone())?;
+                check(args.clone(), log_level)?;
             }
         }
         Command::FormatDev(args) => {

crates/ruff_diagnostics/src/violation.rs

@@ -25,6 +25,11 @@ pub trait Violation: Debug + PartialEq + Eq {
     /// The message used to describe the violation.
     fn message(&self) -> String;
 
+    /// The explanation used in documentation and elsewhere.
+    fn explanation() -> Option<&'static str> {
+        None
+    }
+
     // TODO(micha): Move `fix_title` to `Fix`, add new `advice` method that is shown as an advice.
     // Change the `Diagnostic` renderer to show the advice, and render the fix message after the `Suggested fix: <here>`
 
@@ -45,6 +50,11 @@ pub trait AlwaysFixableViolation: Debug + PartialEq + Eq {
     /// The message used to describe the violation.
     fn message(&self) -> String;
 
+    /// The explanation used in documentation and elsewhere.
+    fn explanation() -> Option<&'static str> {
+        None
+    }
+
     /// The title displayed for the available fix.
     fn fix_title(&self) -> String;
 
@@ -61,6 +71,10 @@ impl<V: AlwaysFixableViolation> Violation for V {
         <Self as AlwaysFixableViolation>::message(self)
     }
 
+    fn explanation() -> Option<&'static str> {
+        <Self as AlwaysFixableViolation>::explanation()
+    }
+
     fn fix_title(&self) -> Option<String> {
         Some(<Self as AlwaysFixableViolation>::fix_title(self))
     }

crates/ruff_formatter/Cargo.toml

@@ -24,6 +24,7 @@ tracing = { workspace = true }
 unicode-width = { workspace = true }
 
 [dev-dependencies]
+insta = { workspace = true }
 
 [features]
 serde = ["dep:serde", "ruff_text_size/serde"]

crates/ruff_formatter/src/buffer.rs

@@ -37,7 +37,7 @@ pub trait Buffer {
     #[doc(hidden)]
     fn elements(&self) -> &[FormatElement];
 
-    /// Glue for usage of the [`write!`] macro with implementers of this trait.
+    /// Glue for usage of the [`write!`] macro with implementors of this trait.
     ///
     /// This method should generally not be invoked manually, but rather through the [`write!`] macro itself.
     ///

crates/ruff_formatter/src/lib.rs

@@ -545,10 +545,6 @@ impl PrintedRange {
         &self.code
     }
 
-    pub fn into_code(self) -> String {
-        self.code
-    }
-
     /// The range the formatted code corresponds to in the source document.
     pub fn source_range(&self) -> TextRange {
         self.source_range

crates/ruff_formatter/src/printer/queue.rs

@@ -78,28 +78,27 @@ impl<'a> PrintQueue<'a> {
 impl<'a> Queue<'a> for PrintQueue<'a> {
     fn pop(&mut self) -> Option<&'a FormatElement> {
         let elements = self.element_slices.last_mut()?;
-        elements.next().or_else(
-            #[cold]
-            || {
-                self.element_slices.pop();
-                let elements = self.element_slices.last_mut()?;
-                elements.next()
-            },
-        )
+        elements.next().or_else(|| {
+            self.element_slices.pop();
+            let elements = self.element_slices.last_mut()?;
+            elements.next()
+        })
     }
 
     fn top_with_interned(&self) -> Option<&'a FormatElement> {
         let mut slices = self.element_slices.iter().rev();
         let slice = slices.next()?;
 
-        slice.as_slice().first().or_else(
-            #[cold]
-            || {
-                slices
-                    .next()
-                    .and_then(|next_elements| next_elements.as_slice().first())
-            },
-        )
+        match slice.as_slice().first() {
+            Some(element) => Some(element),
+            None => {
+                if let Some(next_elements) = slices.next() {
+                    next_elements.as_slice().first()
+                } else {
+                    None
+                }
+            }
+        }
     }
 
     fn extend_back(&mut self, elements: &'a [FormatElement]) {
@@ -147,30 +146,24 @@ impl<'a, 'print> FitsQueue<'a, 'print> {
 
 impl<'a, 'print> Queue<'a> for FitsQueue<'a, 'print> {
     fn pop(&mut self) -> Option<&'a FormatElement> {
-        self.queue.pop().or_else(
-            #[cold]
-            || {
-                if let Some(next_slice) = self.rest_elements.next_back() {
-                    self.queue.extend_back(next_slice.as_slice());
-                    self.queue.pop()
-                } else {
-                    None
-                }
-            },
-        )
+        self.queue.pop().or_else(|| {
+            if let Some(next_slice) = self.rest_elements.next_back() {
+                self.queue.extend_back(next_slice.as_slice());
+                self.queue.pop()
+            } else {
+                None
+            }
+        })
     }
 
     fn top_with_interned(&self) -> Option<&'a FormatElement> {
-        self.queue.top_with_interned().or_else(
-            #[cold]
-            || {
-                if let Some(next_elements) = self.rest_elements.as_slice().last() {
-                    next_elements.as_slice().first()
-                } else {
-                    None
-                }
-            },
-        )
+        self.queue.top_with_interned().or_else(|| {
+            if let Some(next_elements) = self.rest_elements.as_slice().last() {
+                next_elements.as_slice().first()
+            } else {
+                None
+            }
+        })
     }
 
     fn extend_back(&mut self, elements: &'a [FormatElement]) {

crates/ruff_linter/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff_linter"
-version = "0.3.5"
+version = "0.2.1"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }
@@ -15,6 +15,7 @@ license = { workspace = true }
 [dependencies]
 ruff_cache = { path = "../ruff_cache" }
 ruff_diagnostics = { path = "../ruff_diagnostics", features = ["serde"] }
+ruff_index = { path = "../ruff_index" }
 ruff_notebook = { path = "../ruff_notebook" }
 ruff_macros = { path = "../ruff_macros" }
 ruff_python_ast = { path = "../ruff_python_ast", features = ["serde"] }
@@ -59,6 +60,7 @@ regex = { workspace = true }
 result-like = { workspace = true }
 rustc-hash = { workspace = true }
 schemars = { workspace = true, optional = true }
+semver = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 similar = { workspace = true }
@@ -74,9 +76,11 @@ url = { workspace = true }
 
 [dev-dependencies]
 insta = { workspace = true }
+pretty_assertions = { workspace = true }
 test-case = { workspace = true }
 # Disable colored output in tests
 colored = { workspace = true, features = ["no-color"] }
+tempfile = { workspace = true }
 
 [features]
 default = []

crates/ruff_linter/resources/test/fixtures/eradicate/ERA001.py

@@ -28,40 +28,3 @@ dictionary = {
 }
 
 #import os  # noqa
-
-# case 1:
-# try:
-# try:  # with comment
-# try: print()
-# except:
-# except Foo:
-# except Exception as e: print(e)
-
-
-# Script tag without an opening tag (Error)
-
-# requires-python = ">=3.11"
-# dependencies = [
-#   "requests<3",
-#   "rich",
-# ]
-# ///
-
-# Script tag (OK)
-
-# /// script
-# requires-python = ">=3.11"
-# dependencies = [
-#   "requests<3",
-#   "rich",
-# ]
-# ///
-
-# Script tag without a closing tag (OK)
-
-# /// script
-# requires-python = ">=3.11"
-# dependencies = [
-#   "requests<3",
-#   "rich",
-# ]

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S104.py

@@ -18,7 +18,3 @@ func("0.0.0.0")
 def my_func():
     x = "0.0.0.0"
     print(x)
-
-
-# Implicit string concatenation
-"0.0.0.0" f"0.0.0.0{expr}0.0.0.0"

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S108.py

@@ -18,13 +18,6 @@ with open("/dev/shm/unit/test", "w") as f:
 with open("/foo/bar", "w") as f:
     f.write("def")
 
-# Implicit string concatenation
-with open("/tmp/" "abc", "w") as f:
-    f.write("def")
-
-with open("/tmp/abc" f"/tmp/abc", "w") as f:
-    f.write("def")
-
 # Using `tempfile` module should be ok
 import tempfile
 from tempfile import TemporaryDirectory

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S311.py

@@ -1,22 +0,0 @@
-import os
-import random
-
-import a_lib
-
-# OK
-random.SystemRandom()
-
-# Errors
-random.Random()
-random.random()
-random.randrange()
-random.randint()
-random.choice()
-random.choices()
-random.uniform()
-random.triangular()
-random.randbytes()
-
-# Unrelated
-os.urandom()
-a_lib.random()

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S324.py

@@ -1,47 +1,52 @@
-import crypt
 import hashlib
 from hashlib import new as hashlib_new
 from hashlib import sha1 as hashlib_sha1
 
-# Errors
+# Invalid
+
 hashlib.new('md5')
+
 hashlib.new('md4', b'test')
+
 hashlib.new(name='md5', data=b'test')
+
 hashlib.new('MD4', data=b'test')
+
 hashlib.new('sha1')
+
 hashlib.new('sha1', data=b'test')
+
 hashlib.new('sha', data=b'test')
+
 hashlib.new(name='SHA', data=b'test')
+
 hashlib.sha(data=b'test')
+
 hashlib.md5()
+
 hashlib_new('sha1')
+
 hashlib_sha1('sha1')
+
 # usedforsecurity arg only available in Python 3.9+
 hashlib.new('sha1', usedforsecurity=True)
 
-crypt.crypt("test", salt=crypt.METHOD_CRYPT)
-crypt.crypt("test", salt=crypt.METHOD_MD5)
-crypt.crypt("test", salt=crypt.METHOD_BLOWFISH)
-crypt.crypt("test", crypt.METHOD_BLOWFISH)
+# Valid
 
-crypt.mksalt(crypt.METHOD_CRYPT)
-crypt.mksalt(crypt.METHOD_MD5)
-crypt.mksalt(crypt.METHOD_BLOWFISH)
-
-# OK
 hashlib.new('sha256')
+
 hashlib.new('SHA512')
+
 hashlib.sha256(data=b'test')
+
 # usedforsecurity arg only available in Python 3.9+
 hashlib_new(name='sha1', usedforsecurity=False)
+
+# usedforsecurity arg only available in Python 3.9+
 hashlib_sha1(name='sha1', usedforsecurity=False)
+
+# usedforsecurity arg only available in Python 3.9+
 hashlib.md4(usedforsecurity=False)
+
+# usedforsecurity arg only available in Python 3.9+
 hashlib.new(name='sha256', usedforsecurity=False)
-
-crypt.crypt("test")
-crypt.crypt("test", salt=crypt.METHOD_SHA256)
-crypt.crypt("test", salt=crypt.METHOD_SHA512)
-
-crypt.mksalt()
-crypt.mksalt(crypt.METHOD_SHA256)
-crypt.mksalt(crypt.METHOD_SHA512)

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S605.py

@@ -1,5 +1,4 @@
 import os
-import subprocess
 
 import commands
 import popen2
@@ -17,8 +16,6 @@ popen2.Popen3("true")
 popen2.Popen4("true")
 commands.getoutput("true")
 commands.getstatusoutput("true")
-subprocess.getoutput("true")
-subprocess.getstatusoutput("true")
 
 
 # Check command argument looks unsafe.

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S610.py

@@ -1,34 +0,0 @@
-from django.contrib.auth.models import User
-
-# Errors
-User.objects.filter(username='admin').extra(dict(could_be='insecure'))
-User.objects.filter(username='admin').extra(select=dict(could_be='insecure'))
-User.objects.filter(username='admin').extra(select={'test': '%secure' % 'nos'})
-User.objects.filter(username='admin').extra(select={'test': '{}secure'.format('nos')})
-User.objects.filter(username='admin').extra(where=['%secure' % 'nos'])
-User.objects.filter(username='admin').extra(where=['{}secure'.format('no')])
-
-query = '"username") AS "username", * FROM "auth_user" WHERE 1=1 OR "username"=? --'
-User.objects.filter(username='admin').extra(select={'test': query})
-
-where_var = ['1=1) OR 1=1 AND (1=1']
-User.objects.filter(username='admin').extra(where=where_var)
-
-where_str = '1=1) OR 1=1 AND (1=1'
-User.objects.filter(username='admin').extra(where=[where_str])
-
-tables_var = ['django_content_type" WHERE "auth_user"."username"="admin']
-User.objects.all().extra(tables=tables_var).distinct()
-
-tables_str = 'django_content_type" WHERE "auth_user"."username"="admin'
-User.objects.all().extra(tables=[tables_str]).distinct()
-
-# OK
-User.objects.filter(username='admin').extra(
-    select={'test': 'secure'},
-    where=['secure'],
-    tables=['secure']
-)
-User.objects.filter(username='admin').extra({'test': 'secure'})
-User.objects.filter(username='admin').extra(select={'test': 'secure'})
-User.objects.filter(username='admin').extra(where=['secure'])

crates/ruff_linter/resources/test/fixtures/flake8_boolean_trap/FBT.py

@@ -31,7 +31,8 @@ def function(
     kwonly_nonboolvalued_boolhint: bool = 1,
     kwonly_nonboolvalued_boolstrhint: "bool" = 1,
     **kw,
-): ...
+):
+    ...
 
 
 def used(do):
@@ -118,39 +119,3 @@ def func(x: bool):
 
 
 settings(True)
-
-
-from dataclasses import dataclass, InitVar
-
-
-@dataclass
-class Fit:
-    force: InitVar[bool] = False
-
-    def __post_init__(self, force: bool) -> None:
-        print(force)
-
-
-Fit(force=True)
-
-
-# https://github.com/astral-sh/ruff/issues/10356
-from django.db.models import Case, Q, Value, When
-
-
-qs.annotate(
-    is_foo_or_bar=Case(
-        When(Q(is_foo=True) | Q(is_bar=True)),
-        then=Value(True),
-    ),
-    default=Value(False),
-)
-
-
-# https://github.com/astral-sh/ruff/issues/10485
-from pydantic import Field
-from pydantic_settings import BaseSettings
-
-
-class Settings(BaseSettings):
-    foo: bool = Field(True, exclude=True)

crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B030.py

@@ -9,69 +9,62 @@ B030:
 
 try:
     pass
-except 1:  # Error
+except 1:  # error
     pass
 
 try:
     pass
-except (1, ValueError):  # Error
+except (1, ValueError):  # error
     pass
 
 try:
     pass
-except (ValueError, (RuntimeError, (KeyError, TypeError))):  # Error
+except (ValueError, (RuntimeError, (KeyError, TypeError))):  # error
     pass
 
 try:
     pass
-except (ValueError, *(RuntimeError, (KeyError, TypeError))):  # Error
+except (ValueError, *(RuntimeError, (KeyError, TypeError))):  # error
     pass
 
 
 try:
     pass
-except (*a, *(RuntimeError, (KeyError, TypeError))):  # Error
+except (*a, *(RuntimeError, (KeyError, TypeError))):  # error
+    pass
+
+try:
+    pass
+except (ValueError, *(RuntimeError, TypeError)):  # ok
+    pass
+
+try:
+    pass
+except (ValueError, *[RuntimeError, *(TypeError,)]):  # ok
     pass
 
 
 try:
     pass
-except* a + (RuntimeError, (KeyError, TypeError)):  # Error
+except (*a, *b):  # ok
     pass
 
 
 try:
     pass
-except (ValueError, *(RuntimeError, TypeError)):  # OK
-    pass
-
-try:
-    pass
-except (ValueError, *[RuntimeError, *(TypeError,)]):  # OK
+except (*a, *(RuntimeError, TypeError)):  # ok
     pass
 
 
 try:
     pass
-except (*a, *b):  # OK
+except (*a, *(b, c)):  # ok
     pass
 
 
 try:
     pass
-except (*a, *(RuntimeError, TypeError)):  # OK
-    pass
-
-
-try:
-    pass
-except (*a, *(b, c)):  # OK
-    pass
-
-
-try:
-    pass
-except (*a, *(*b, *c)):  # OK
+except (*a, *(*b, *c)):  # ok
     pass
 
 
@@ -81,52 +74,5 @@ def what_to_catch():
 
 try:
     pass
-except what_to_catch():  # OK
-    pass
-
-
-try:
-    pass
-except (a, b) + (c, d):  # OK
-    pass
-
-
-try:
-    pass
-except* (a, b) + (c, d):  # OK
-    pass
-
-
-try:
-    pass
-except* (a, (b) + (c)):  # OK
-    pass
-
-
-try:
-    pass
-except (a, b) + (c, d) + (e, f):  # OK
-    pass
-
-
-try:
-    pass
-except a + (b, c):  # OK
-    pass
-
-
-try:
-    pass
-except (ValueError, *(RuntimeError, TypeError), *((ArithmeticError,) + (EOFError,))):
-    pass
-
-
-try:
-    pass
-except ((a, b) + (c, d)) + ((e, f) + (g)):  # OK
-    pass
-
-try:
-    pass
-except (a, b) * (c, d):  # B030
+except what_to_catch():  # ok
     pass

crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B031.py

@@ -174,49 +174,6 @@ for (_key1, _key2), (_value1, _value2) in groupby(
     collect_shop_items("Jane", group[1])
     collect_shop_items("Joe", group[1])
 
-# Shouldn't trigger the warning when there is a continue, break statement.
-for _section, section_items in groupby(items, key=lambda p: p[1]):
-    if _section == "greens":
-        collect_shop_items(shopper, section_items)
-        continue
-    elif _section == "frozen items":
-        collect_shop_items(shopper, section_items)
-        break
-    collect_shop_items(shopper, section_items)
-
-# Shouldn't trigger the warning when there is a return statement.
-for _section, section_items in groupby(items, key=lambda p: p[1]):
-    if _section == "greens":
-        collect_shop_items(shopper, section_items)
-        return
-    elif _section == "frozen items":
-        return section_items
-    collect_shop_items(shopper, section_items)
-
-# Should trigger the warning for duplicate access, even if is a return statement after.
-for _section, section_items in groupby(items, key=lambda p: p[1]):
-    if _section == "greens":
-        collect_shop_items(shopper, section_items)
-        collect_shop_items(shopper, section_items)
-        return
-
-# Should trigger the warning for duplicate access, even if is a return in another branch.
-for _section, section_items in groupby(items, key=lambda p: p[1]):
-    if _section == "greens":
-        collect_shop_items(shopper, section_items)
-        return
-    elif _section == "frozen items":
-        collect_shop_items(shopper, section_items)
-        collect_shop_items(shopper, section_items)
-
-# Should trigger, since only one branch has a return statement.
-for _section, section_items in groupby(items, key=lambda p: p[1]):
-    if _section == "greens":
-        collect_shop_items(shopper, section_items)
-        return
-    elif _section == "frozen items":
-        collect_shop_items(shopper, section_items)
-    collect_shop_items(shopper, section_items)  # B031
 
 # Let's redefine the `groupby` function to make sure we pick up the correct one.
 # NOTE: This should always be at the end of the file.

crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C400.py

@@ -1,20 +1,11 @@
-# Cannot combine with C416. Should use list comprehension here.
-even_nums = list(2 * x for x in range(3))
-odd_nums = list(
-    2 * x + 1 for x in range(3)
-)
-
-
-# Short-circuit case, combine with C416 and should produce x = list(range(3))
 x = list(x for x in range(3))
 x = list(
     x for x in range(3)
 )
 
-# Not built-in list.
+
 def list(*args, **kwargs):
     return None
 
 
-list(2 * x for x in range(3))
 list(x for x in range(3))

crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C401.py

@@ -1,30 +1,20 @@
-# Cannot conbime with C416. Should use set comprehension here.
-even_nums = set(2 * x for x in range(3))
-odd_nums = set(
-    2 * x + 1 for x in range(3)
-)
-small_nums = f"{set(a if a < 6 else 0 for a in range(3))}"
+x = set(x for x in range(3))
+x = set(x for x in range(3))
+y = f"{set(a if a < 6 else 0  for a in range(3))}"
+_ = "{}".format(set(a if a < 6 else 0 for a in range(3)))
+print(f"Hello {set(a for a in range(3))} World")
+
 
 def f(x):
     return x
 
+
+print(f'Hello {set(a for a in "abc")} World')
+print(f"Hello {set(a for a in 'abc')} World")
 print(f"Hello {set(f(a) for a in 'abc')} World")
-print(f"Hello { set(f(a) for a in 'abc') } World")
-
-
-# Short-circuit case, combine with C416 and should produce x = set(range(3))
-x = set(x for x in range(3))
-x = set(
-    x for x in range(3)
-)
-print(f"Hello {set(a for a in range(3))} World")
 print(f"{set(a for a in 'abc') - set(a for a in 'ab')}")
 print(f"{ set(a for a in 'abc') - set(a for a in 'ab') }")
 
-
-# Not built-in set.
-def set(*args, **kwargs):
-    return None
-
-set(2 * x for x in range(3))
-set(x for x in range(3))
+# The fix generated for this diagnostic is incorrect, as we add additional space
+# around the set comprehension.
+print(f"{ {set(a for a in 'abc')} }")

crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C409.py

@@ -16,11 +16,3 @@ tuple(  # comment
 tuple([  # comment
     1, 2
 ])
-
-tuple((
-    1,
-))
-
-t6 = tuple([1])
-t7 = tuple((1,))
-t8 = tuple([1,])

crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C413.py

@@ -14,6 +14,9 @@ reversed(sorted(x, reverse=not x))
 reversed(sorted(i for i in range(42)))
 reversed(sorted((i for i in range(42)), reverse=True))
 
-# Regression test for: https://github.com/astral-sh/ruff/issues/10335
-reversed(sorted([1, 2, 3], reverse=False or True))
-reversed(sorted([1, 2, 3], reverse=(False or True)))
+
+def reversed(*args, **kwargs):
+    return None
+
+
+reversed(sorted(x, reverse=True))

crates/ruff_linter/resources/test/fixtures/flake8_datetimez/DTZ007.py

@@ -33,9 +33,3 @@ from datetime import datetime
 
 # no replace orastimezone unqualified
 datetime.strptime("something", "something")
-
-# F-strings
-datetime.strptime("something", f"%Y-%m-%dT%H:%M:%S{('.%f' if millis else '')}%z")
-datetime.strptime("something", f"%Y-%m-%d %H:%M:%S%z")
-# F-string is implicitly concatenated to another string
-datetime.strptime("something", f"%Y-%m-%dT%H:%M:%S{('.%f' if millis else '')}" "%z")

crates/ruff_linter/resources/test/fixtures/flake8_debugger/T100.py

@@ -7,19 +7,7 @@ from pdb import set_trace as st
 from celery.contrib.rdb import set_trace
 from celery.contrib import rdb
 import celery.contrib.rdb
-from debugpy import wait_for_client
-import debugpy
-from ptvsd import break_into_debugger
-from ptvsd import enable_attach
-from ptvsd import wait_for_attach
-import ptvsd
 
 breakpoint()
 st()
 set_trace()
-debugpy.breakpoint()
-wait_for_client()
-debugpy.listen(1234)
-enable_attach()
-break_into_debugger()
-wait_for_attach()

crates/ruff_linter/resources/test/fixtures/flake8_logging/LOG009.py

@@ -1,12 +1,9 @@
-def func():
-    import logging
+import logging
 
-    logging.WARN  # LOG009
-    logging.WARNING  # OK
+logging.WARN  # LOG009
+logging.WARNING  # OK
 
+from logging import WARN, WARNING
 
-def func():
-    from logging import WARN, WARNING
-
-    WARN  # LOG009
-    WARNING  # OK
+WARN  # LOG009
+WARNING  # OK

crates/ruff_linter/resources/test/fixtures/flake8_pie/PIE790.py

@@ -227,11 +227,3 @@ class Repro[int](Protocol):
     def impl(self) -> str:
         """Docstring"""
         return self.func()
-
-
-import typing
-
-if typing.TYPE_CHECKING:
-    def contains_meaningful_ellipsis() -> list[int]:
-        """Allow this in a TYPE_CHECKING block."""
-        ...

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI025_2.py

@@ -1,14 +0,0 @@
-"""Tests to ensure we correctly rename references inside `__all__`"""
-
-from collections.abc import Set
-
-__all__ = ["Set"]
-
-if True:
-    __all__ += [r'''Set''']
-
-if 1:
-    __all__ += ["S" "e" "t"]
-
-if not False:
-    __all__ += ["Se" 't']

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI025_2.pyi

@@ -1,14 +0,0 @@
-"""Tests to ensure we correctly rename references inside `__all__`"""
-
-from collections.abc import Set
-
-__all__ = ["Set"]
-
-if True:
-    __all__ += [r'''Set''']
-
-if 1:
-    __all__ += ["S" "e" "t"]
-
-if not False:
-    __all__ += ["Se" 't']

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI025_3.py

@@ -1,6 +0,0 @@
-"""
-Tests for PYI025 where the import is marked as re-exported
-through usage of a "redundant" `import Set as Set` alias
-"""
-
-from collections.abc import Set as Set  # PYI025 triggered but fix is not marked as safe

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI025_3.pyi

@@ -1,6 +0,0 @@
-"""
-Tests for PYI025 where the import is marked as re-exported
-through usage of a "redundant" `import Set as Set` alias
-"""
-
-from collections.abc import Set as Set  # PYI025 triggered but fix is not marked as safe

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI053.pyi

@@ -64,5 +64,3 @@ def not_warnings_dot_deprecated(
     "Not warnings.deprecated, so this one *should* lead to PYI053 in a stub!"  # Error: PYI053
 )
 def not_a_deprecated_function() -> None: ...
-
-fbaz: str = f"51 character {foo} stringgggggggggggggggggggggggggg"  # Error: PYI053

crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT007.py

@@ -79,6 +79,5 @@ def test_single_list_of_lists(param):
 
 @pytest.mark.parametrize("a", [1, 2])
 @pytest.mark.parametrize(("b", "c"), ((3, 4), (5, 6)))
-@pytest.mark.parametrize("d", [3,])
 def test_multiple_decorators(a, b, c):
     pass

crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT014.py

@@ -51,8 +51,3 @@ def test_error_parentheses_trailing_comma(x):
 @pytest.mark.parametrize("x", [1, 2])
 def test_ok(x):
     ...
-
-
-@pytest.mark.parametrize('data, spec', [(1.0, 1.0), (1.0, 1.0)])
-def test_numbers(data, spec):
-    ...

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_doubles_mixed_quotes_class_var_1.py

@@ -1,9 +0,0 @@
-class SingleLineDocstrings():
-    ""'Start with empty string' ' and lint docstring safely'
-    """ Not a docstring """
-
-    def foo(self, bar="""not a docstring"""):
-        ""'Start with empty string' ' and lint docstring safely'
-        pass
-
-    class Nested(foo()[:]): ""'Start with empty string' ' and lint docstring safely'; pass

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_doubles_mixed_quotes_class_var_2.py

@@ -1,9 +0,0 @@
-class SingleLineDocstrings():
-    "Do not"' start with empty string' ' and lint docstring safely'
-    """ Not a docstring """
-
-    def foo(self, bar="""not a docstring"""):
-        "Do not"' start with empty string' ' and lint docstring safely'
-        pass
-
-    class Nested(foo()[:]): "Do not"' start with empty string' ' and lint docstring safely'; pass

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_doubles_mixed_quotes_module_singleline_var_1.py

@@ -1,5 +0,0 @@
-""'Start with empty string' ' and lint docstring safely'
-
-def foo():
-    pass
-""" this is not a docstring """

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_doubles_mixed_quotes_module_singleline_var_2.py

@@ -1,5 +0,0 @@
-"Do not"' start with empty string' ' and lint docstring safely'
-
-def foo():
-    pass
-""" this is not a docstring """

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_singles_mixed_quotes_class_var_1.py

@@ -1,9 +0,0 @@
-class SingleLineDocstrings():
-    ''"Start with empty string" ' and lint docstring safely'
-    ''' Not a docstring '''
-
-    def foo(self, bar='''not a docstring'''):
-        ''"Start with empty string" ' and lint docstring safely'
-        pass
-
-    class Nested(foo()[:]): ''"Start with empty string" ' and lint docstring safely'; pass

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_singles_mixed_quotes_class_var_2.py

@@ -1,9 +0,0 @@
-class SingleLineDocstrings():
-    'Do not'" start with empty string" ' and lint docstring safely'
-    ''' Not a docstring '''
-
-    def foo(self, bar='''not a docstring'''):
-        'Do not'" start with empty string" ' and lint docstring safely'
-        pass
-
-    class Nested(foo()[:]): 'Do not'" start with empty string" ' and lint docstring safely'; pass

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_singles_mixed_quotes_module_singleline_var_1.py

@@ -1,5 +0,0 @@
-''"Start with empty string" ' and lint docstring safely'
-
-def foo():
-    pass
-""" this is not a docstring """

crates/ruff_linter/resources/test/fixtures/flake8_quotes/docstring_singles_mixed_quotes_module_singleline_var_2.py

@@ -1,5 +0,0 @@
-'Do not'" start with empty string" ' and lint docstring safely'
-
-def foo():
-    pass
-""" this is not a docstring """

crates/ruff_linter/resources/test/fixtures/flake8_quotes/doubles_would_be_triple_quotes.py

@@ -1,2 +0,0 @@
-s = ""'Start with empty string' ' and lint docstring safely'
-s = "Do not"' start with empty string' ' and lint docstring safely'

crates/ruff_linter/resources/test/fixtures/flake8_quotes/singles.py

@@ -2,6 +2,3 @@ this_should_be_linted = 'single quote string'
 this_should_be_linted = u'double quote string'
 this_should_be_linted = f'double quote string'
 this_should_be_linted = f'double {"quote"} string'
-
-# https://github.com/astral-sh/ruff/issues/10546
-x: "Literal['foo', 'bar']"

crates/ruff_linter/resources/test/fixtures/flake8_quotes/singles_escaped_unnecessary.py

@@ -40,7 +40,4 @@ f"\'normal\' {f"\'nested\' {"other"} 'single quotes'"} normal"  # Q004
 
 # Make sure we do not unescape quotes
 this_is_fine = "This is an \\'escaped\\' quote"
-this_should_raise_Q004 = "This is an \\\'escaped\\\' quote with an extra backslash"  # Q004
-
-# Invalid escapes in bytestrings are also triggered:
-x = b"\xe7\xeb\x0c\xa1\x1b\x83tN\xce=x\xe9\xbe\x01\xb9\x13B_\xba\xe7\x0c2\xce\'rm\x0e\xcd\xe9.\xf8\xd2"  # Q004
+this_should_raise_Q004 = "This is an \\\'escaped\\\' quote with an extra backslash"

crates/ruff_linter/resources/test/fixtures/flake8_quotes/singles_would_be_triple_quotes.py

@@ -1,2 +0,0 @@
-s = ''"Start with empty string" ' and lint docstring safely'
-s = 'Do not'" start with empty string" ' and lint docstring safely'

crates/ruff_linter/resources/test/fixtures/flake8_raise/RSE102.py

@@ -93,15 +93,3 @@ def func():
 
 # OK
 raise func()
-
-
-# OK
-future = executor.submit(float, "a")
-if future.exception():
-    raise future.exception()
-
-
-# RSE102
-future = executor.submit(float, "a")
-if future.exception():
-    raise future.Exception()

crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM103.py

@@ -84,22 +84,3 @@ def f():
         return True
     else:
         return False
-
-
-###
-# Positive cases (preview)
-###
-
-
-def f():
-    # SIM103
-    if a:
-        return True
-    return False
-
-
-def f():
-    # SIM103
-    if a:
-        return False
-    return True

crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM113.py

@@ -193,11 +193,3 @@ def func():
         for y in range(5):
             g(x, idx)
             idx += 1
-
-async def func():
-    # OK (for loop is async)
-    idx = 0
-
-    async for x in async_gen():
-        g(x, idx)
-        idx += 1

crates/ruff_linter/resources/test/fixtures/flake8_trio/TRIO115.py

@@ -10,7 +10,7 @@ async def func():
 
     trio.sleep(0)  # TRIO115
     foo = 0
-    trio.sleep(foo)  # OK
+    trio.sleep(foo)  # TRIO115
     trio.sleep(1)  # OK
     time.sleep(0)  # OK
 
@@ -20,26 +20,26 @@ async def func():
     trio.sleep(bar)
 
     x, y = 0, 2000
-    trio.sleep(x)  # OK
+    trio.sleep(x)  # TRIO115
     trio.sleep(y)  # OK
 
     (a, b, [c, (d, e)]) = (1, 2, (0, [4, 0]))
-    trio.sleep(c)  # OK
+    trio.sleep(c)  # TRIO115
     trio.sleep(d)  # OK
-    trio.sleep(e)  # OK
+    trio.sleep(e)  # TRIO115
 
     m_x, m_y = 0
     trio.sleep(m_y)  # OK
     trio.sleep(m_x)  # OK
 
     m_a = m_b = 0
-    trio.sleep(m_a)  # OK
-    trio.sleep(m_b)  # OK
+    trio.sleep(m_a)  # TRIO115
+    trio.sleep(m_b)  # TRIO115
 
     m_c = (m_d, m_e) = (0, 0)
     trio.sleep(m_c)  # OK
-    trio.sleep(m_d)  # OK
-    trio.sleep(m_e)  # OK
+    trio.sleep(m_d)  # TRIO115
+    trio.sleep(m_e)  # TRIO115
 
 
 def func():
@@ -63,16 +63,4 @@ def func():
     import trio
 
     if (walrus := 0) == 0:
-        trio.sleep(walrus)  # OK
-
-
-def func():
-    import trio
-
-    async def main() -> None:
-        sleep = 0
-        for _ in range(2):
-            await trio.sleep(sleep)  # OK
-            sleep = 10
-
-    trio.run(main)
+        trio.sleep(walrus)  # TRIO115

crates/ruff_linter/resources/test/fixtures/isort/default_section_user_defined.py

@@ -1,9 +0,0 @@
-from __future__ import annotations
-
-import django.settings
-from library import foo
-import os
-import pytz
-import sys
-
-from . import local

crates/ruff_linter/resources/test/fixtures/isort/lines_after_imports.pyi

@@ -1,16 +0,0 @@
-from __future__ import annotations
-
-from typing import Any
-
-from requests import Session
-
-from my_first_party import my_first_party_object
-
-from . import my_local_folder_object
-
-
-
-class Thing(object):
-  name: str
-  def __init__(self, name: str):
-    self.name = name

crates/ruff_linter/resources/test/fixtures/isort/no_standard_library.py

@@ -1,9 +0,0 @@
-from __future__ import annotations
-
-import os
-import django.settings
-from library import foo
-import pytz
-
-from . import local
-import sys

crates/ruff_linter/resources/test/fixtures/isort/separate_local_folder_imports.py

@@ -3,5 +3,3 @@ import ruff
 import leading_prefix
 import os
 from . import leading_prefix
-from .. import trailing_prefix
-from ruff import check

crates/ruff_linter/resources/test/fixtures/isort/unicode.py

@@ -1,6 +0,0 @@
-from astropy.constants import hbar as ℏ
-from numpy import pi as π
-import numpy as ℂℇℊℋℌℍℎℐℑℒℓℕℤΩℨKÅℬℭℯℰℱℹℴ
-import numpy as CƐgHHHhIILlNZΩZKÅBCeEFio
-
-h = 2 * π * ℏ

crates/ruff_linter/resources/test/fixtures/numpy/NPY201.py

@@ -104,5 +104,3 @@ def func():
     np.unicode_("asf")
 
     np.who()
-
-    np.row_stack(([1,2], [3,4]))

crates/ruff_linter/resources/test/fixtures/pep8_naming/N804.py

@@ -50,29 +50,6 @@ class MetaClass(ABCMeta):
     def static_method(not_cls) -> bool:
         return False
 
-class ClsInArgsClass(ABCMeta):
-    def cls_as_argument(this, cls):
-        pass
-
-    def cls_as_pos_only_argument(this, cls, /):
-        pass
-
-    def cls_as_kw_only_argument(this, *, cls):
-        pass
-
-    def cls_as_varags(this, *cls):
-        pass
-
-    def cls_as_kwargs(this, **cls):
-        pass
-
-class RenamingInMethodBodyClass(ABCMeta):
-    def bad_method(this):
-        this = this
-        this
-
-    def bad_method(this):
-        self = this
 
 def func(x):
     return x

crates/ruff_linter/resources/test/fixtures/pep8_naming/N805.py

@@ -61,7 +61,7 @@ class PosOnlyClass:
     def good_method_pos_only(self, blah, /, something: str):
         pass
 
-    def bad_method_pos_only(this, blah, /, something: str):
+    def bad_method_pos_only(this, blah, /, self, something: str):
         pass
 
 
@@ -93,27 +93,3 @@ class ModelClass:
     @foobar.thisisstatic
     def badstatic(foo):
         pass
-
-class SelfInArgsClass:
-    def self_as_argument(this, self):
-        pass
-
-    def self_as_pos_only_argument(this, self, /):
-        pass
-
-    def self_as_kw_only_argument(this, *, self):
-        pass
-
-    def self_as_varags(this, *self):
-        pass
-
-    def self_as_kwargs(this, **self):
-        pass
-
-class RenamingInMethodBodyClass:
-    def bad_method(this):
-        this = this
-        this
-
-    def bad_method(this):
-        self = this

crates/ruff_linter/resources/test/fixtures/pycodestyle/.editorconfig

@@ -1,8 +0,0 @@
-# These rules test for intentional "odd" formatting. Using a formatter fixes that
-[E{1,2,3}*.py]
-generated_code = true
-ij_formatter_enabled = false
-
-[W*.py]
-generated_code = true
-ij_formatter_enabled = false

crates/ruff_linter/resources/test/fixtures/pycodestyle/E20.py

@@ -147,15 +147,3 @@ ham[upper : ]
 
 #: E203:1:10
 ham[upper  :]
-
-#: Okay
-ham[lower +1 :, "columnname"]
-
-#: E203:1:13
-ham[lower + 1  :, "columnname"]
-
-#: Okay
-f"{ham[lower +1 :, "columnname"]}"
-
-#: E203:1:13
-f"{ham[lower + 1  :, "columnname"]}"