fixup

## Summary

Part of https://github.com/astral-sh/ty/issues/168. Infer more precise types for collection literals (currently, only `list` and `set`). For example,

```py
x = [1, 2, 3] # revealed: list[Unknown | int]
y: list[int] = [1, 2, 3] # revealed: list[int]
```

This could easily be extended to `dict` literals, but I am intentionally limiting scope for now.

.github/workflows/build-binaries.yml

@@ -39,11 +39,11 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-build') }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
       - name: "Prep README.md"
@@ -68,11 +68,11 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-build') }}
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
@@ -110,11 +110,11 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-build') }}
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: arm64
@@ -166,11 +166,11 @@ jobs:
           - target: aarch64-pc-windows-msvc
             arch: x64
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: ${{ matrix.platform.arch }}
@@ -219,11 +219,11 @@ jobs:
           - x86_64-unknown-linux-gnu
           - i686-unknown-linux-gnu
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
@@ -296,11 +296,11 @@ jobs:
             arch: riscv64
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
       - name: "Prep README.md"
@@ -361,11 +361,11 @@ jobs:
           - x86_64-unknown-linux-musl
           - i686-unknown-linux-musl
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
@@ -427,11 +427,11 @@ jobs:
             arch: armv7
 
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
       - name: "Prep README.md"

.github/workflows/build-docker.yml

@@ -33,7 +33,7 @@ jobs:
           - linux/amd64
           - linux/arm64
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           submodules: recursive
           persist-credentials: false
@@ -113,7 +113,7 @@ jobs:
     if: ${{ inputs.plan != '' && !fromJson(inputs.plan).announcement_tag_is_implicit }}
     steps:
       - name: Download digests
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           path: /tmp/digests
           pattern: digests-*
@@ -256,7 +256,7 @@ jobs:
     if: ${{ inputs.plan != '' && !fromJson(inputs.plan).announcement_tag_is_implicit }}
     steps:
       - name: Download digests
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           path: /tmp/digests
           pattern: digests-*

.github/workflows/ci.yaml

@@ -43,7 +43,7 @@ jobs:
       # Flag that is set to "true" when code related to the playground changes.
       playground: ${{ steps.check_playground.outputs.changed }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           fetch-depth: 0
           persist-credentials: false
@@ -209,7 +209,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - name: "Install Rust toolchain"
@@ -223,7 +223,7 @@ jobs:
     if: ${{ needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main' }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -243,22 +243,26 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
-        uses: rui314/setup-mold@7344740a9418dcdcb481c7df83d9fbd1d5072d7d # v1
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-insta
+      - name: "Install uv"
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        with:
+          enable-cache: "true"
       - name: ty mdtests (GitHub annotations)
         if: ${{ needs.determine_changes.outputs.ty == 'true' }}
         env:
@@ -301,22 +305,26 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
-        uses: rui314/setup-mold@7344740a9418dcdcb481c7df83d9fbd1d5072d7d # v1
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-insta
+      - name: "Install uv"
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        with:
+          enable-cache: "true"
       - name: "Run tests"
         shell: bash
         env:
@@ -330,16 +338,20 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-nextest
+      - name: "Install uv"
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        with:
+          enable-cache: "true"
       - name: "Run tests"
         shell: bash
         env:
@@ -357,15 +369,15 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
-          node-version: 20
+          node-version: 22
           cache: "npm"
           cache-dependency-path: playground/package-lock.json
       - uses: jetli/wasm-pack-action@0d096b08b4e5a7de8c28de67e11e945404e9eefa # v0.4.0
@@ -386,14 +398,14 @@ jobs:
     if: ${{ github.ref == 'refs/heads/main' }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
-        uses: rui314/setup-mold@7344740a9418dcdcb481c7df83d9fbd1d5072d7d # v1
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Build"
         run: cargo build --release --locked
 
@@ -404,7 +416,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: SebRollen/toml-action@b1b3628f55fc3a28208d4203ada8b737e9687876 # v1.2.0
@@ -418,7 +430,7 @@ jobs:
           MSRV: ${{ steps.msrv.outputs.value }}
         run: rustup default "${MSRV}"
       - name: "Install mold"
-        uses: rui314/setup-mold@7344740a9418dcdcb481c7df83d9fbd1d5072d7d # v1
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Build tests"
         shell: bash
         env:
@@ -432,7 +444,7 @@ jobs:
     if: ${{ github.ref == 'refs/heads/main' || needs.determine_changes.outputs.fuzz == 'true' || needs.determine_changes.outputs.code == 'true' }}
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -441,9 +453,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo-binstall"
-        uses: cargo-bins/cargo-binstall@0dca8cf8dfb40cb77a29cece06933ce674674523 # v1.15.1
-        with:
-          tool: cargo-fuzz@0.11.2
+        uses: cargo-bins/cargo-binstall@20aa316bab4942180bbbabe93237858e8d77f1ed # v1.15.5
       - name: "Install cargo-fuzz"
         # Download the latest version from quick install and not the github releases because github releases only has MUSL targets.
         run: cargo binstall cargo-fuzz --force  --disable-strategies crate-meta-data --no-confirm
@@ -460,11 +470,11 @@ jobs:
     env:
       FORCE_COLOR: 1
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         name: Download Ruff binary to test
         id: download-cached-binary
         with:
@@ -494,7 +504,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -524,14 +534,14 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && github.event_name == 'pull_request' && needs.determine_changes.outputs.code == 'true' }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
 
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         name: Download comparison Ruff binary
         id: ruff-target
         with:
@@ -648,10 +658,10 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && github.event_name == 'pull_request' && (needs.determine_changes.outputs.ty == 'true' || needs.determine_changes.outputs.py-fuzzer == 'true') }}
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         name: Download new ty binary
         id: ty-new
         with:
@@ -664,7 +674,7 @@ jobs:
           branch: ${{ github.event.pull_request.base.ref }}
           workflow: "ci.yaml"
           check_artifacts: true
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Fuzz
         env:
           FORCE_COLOR: 1
@@ -691,10 +701,10 @@ jobs:
     needs: determine_changes
     if: ${{ needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: cargo-bins/cargo-binstall@0dca8cf8dfb40cb77a29cece06933ce674674523 # v1.15.1
+      - uses: cargo-bins/cargo-binstall@20aa316bab4942180bbbabe93237858e8d77f1ed # v1.15.5
       - run: cargo binstall --no-confirm cargo-shear
       - run: cargo shear
 
@@ -704,10 +714,10 @@ jobs:
     timeout-minutes: 20
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
@@ -731,12 +741,12 @@ jobs:
     runs-on: depot-ubuntu-22.04-16
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
       - name: "Cache pre-commit"
@@ -762,10 +772,10 @@ jobs:
     env:
       MKDOCS_INSIDERS_SSH_KEY_EXISTS: ${{ secrets.MKDOCS_INSIDERS_SSH_KEY != '' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.13"
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -777,7 +787,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
       - name: Install uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: "Install Insiders dependencies"
         if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
         run: uv pip install -r docs/requirements-insiders.txt --system
@@ -804,7 +814,7 @@ jobs:
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.formatter == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
@@ -830,18 +840,18 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         name: "Download ruff-lsp source"
         with:
           persist-credentials: false
           repository: "astral-sh/ruff-lsp"
 
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           # installation fails on 3.13 and newer
           python-version: "3.12"
 
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         name: Download development ruff binary
         id: ruff-target
         with:
@@ -872,13 +882,13 @@ jobs:
       - determine_changes
     if: ${{ (needs.determine_changes.outputs.playground == 'true') }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
           cache: "npm"
@@ -904,18 +914,18 @@ jobs:
     timeout-minutes: 20
     steps:
       - name: "Checkout Branch"
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
 
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-codspeed
 
@@ -923,8 +933,9 @@ jobs:
         run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@0b6e7a3d96c9d2a6057e7bcea6b45aaf2f7ce60b # v3.8.0
+        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
         with:
+          mode: instrumentation
           run: cargo codspeed run
           token: ${{ secrets.CODSPEED_TOKEN }}
 
@@ -937,18 +948,18 @@ jobs:
       TY_LOG: ruff_benchmark=debug
     steps:
       - name: "Checkout Branch"
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
 
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-codspeed
 
@@ -956,7 +967,13 @@ jobs:
         run: cargo codspeed build --features "codspeed,walltime" --no-default-features -p ruff_benchmark
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@0b6e7a3d96c9d2a6057e7bcea6b45aaf2f7ce60b # v3.8.0
+        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
+        env:
+          # enabling walltime flamegraphs adds ~6 minutes to the CI time, and they don't
+          # appear to provide much useful insight for our walltime benchmarks right now
+          # (see https://github.com/astral-sh/ruff/pull/20419)
+          CODSPEED_PERF_ENABLED: false
         with:
+          mode: walltime
           run: cargo codspeed run
           token: ${{ secrets.CODSPEED_TOKEN }}

.github/workflows/daily_fuzz.yaml

@@ -31,14 +31,14 @@ jobs:
     # Don't run the cron job on forks:
     if: ${{ github.repository == 'astral-sh/ruff' || github.event_name != 'schedule' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
-        uses: rui314/setup-mold@7344740a9418dcdcb481c7df83d9fbd1d5072d7d # v1
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: Build ruff
         # A debug build means the script runs slower once it gets started,
@@ -65,7 +65,7 @@ jobs:
     permissions:
       issues: write
     steps:
-      - uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+      - uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/mypy_primer.yaml

@@ -32,14 +32,14 @@ jobs:
     runs-on: depot-ubuntu-22.04-32
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: ruff
           fetch-depth: 0
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
@@ -75,14 +75,14 @@ jobs:
     runs-on: depot-ubuntu-22.04-32
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: ruff
           fetch-depth: 0
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:

.github/workflows/notify-dependents.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Update pre-commit mirror"
-        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ secrets.RUFF_PRE_COMMIT_PAT }}
           script: |

.github/workflows/publish-docs.yml

@@ -23,12 +23,12 @@ jobs:
     env:
       MKDOCS_INSIDERS_SSH_KEY_EXISTS: ${{ secrets.MKDOCS_INSIDERS_SSH_KEY != '' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           ref: ${{ inputs.ref }}
           persist-credentials: true
 
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: 3.12
 

.github/workflows/publish-playground.yml

@@ -24,12 +24,12 @@ jobs:
     env:
       CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
           cache: "npm"

.github/workflows/publish-pypi.yml

@@ -22,8 +22,8 @@ jobs:
       id-token: write
     steps:
       - name: "Install uv"
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
-      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           pattern: wheels-*
           path: wheels

.github/workflows/publish-ty-playground.yml

@@ -30,12 +30,12 @@ jobs:
     env:
       CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
       - uses: jetli/wasm-bindgen-action@20b33e20595891ab1a0ed73145d8a21fc96e7c29 # v0.2.0

.github/workflows/publish-wasm.yml

@@ -29,7 +29,7 @@ jobs:
         target: [web, bundler, nodejs]
       fail-fast: false
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
       - name: "Install Rust toolchain"
@@ -45,9 +45,9 @@ jobs:
           jq '.name="@astral-sh/ruff-wasm-${{ matrix.target }}"' crates/ruff_wasm/pkg/package.json > /tmp/package.json
           mv /tmp/package.json crates/ruff_wasm/pkg
       - run: cp LICENSE crates/ruff_wasm/pkg # wasm-pack does not put the LICENSE file in the pkg
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
-          node-version: 20
+          node-version: 22
           registry-url: "https://registry.npmjs.org"
       - name: "Publish (dry-run)"
         if: ${{ inputs.plan == '' || fromJson(inputs.plan).announcement_tag_is_implicit }}

.github/workflows/sync_typeshed.yaml

@@ -50,12 +50,12 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         name: Checkout Ruff
         with:
           path: ruff
           persist-credentials: true
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         name: Checkout typeshed
         with:
           repository: python/typeshed
@@ -65,7 +65,7 @@ jobs:
         run: |
           git config --global user.name typeshedbot
           git config --global user.email '<>'
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Sync typeshed stubs
         run: |
           rm -rf "ruff/${VENDORED_TYPESHED}"
@@ -112,12 +112,12 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         name: Checkout Ruff
         with:
           persist-credentials: true
           ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Setup git
         run: |
           git config --global user.name typeshedbot
@@ -150,12 +150,12 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         name: Checkout Ruff
         with:
           persist-credentials: true
           ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Setup git
         run: |
           git config --global user.name typeshedbot
@@ -192,7 +192,7 @@ jobs:
     permissions:
       issues: write
     steps:
-      - uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+      - uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/ty-ecosystem-analyzer.yaml

@@ -26,14 +26,14 @@ jobs:
     timeout-minutes: 20
     if: contains(github.event.label.name, 'ecosystem-analyzer')
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: ruff
           fetch-depth: 0
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
@@ -64,11 +64,12 @@ jobs:
 
           cd ..
 
-          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@27dd66d9e397d986ef9c631119ee09556eab8af9"
+          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@fc0f612798710b0dd69bb7528bc9b361dc60bd43"
 
           ecosystem-analyzer \
             --repository ruff \
             diff \
+            --profile=release \
             --projects-old ruff/projects_old.txt \
             --projects-new ruff/projects_new.txt \
             --old old_commit \

.github/workflows/ty-ecosystem-report.yaml

@@ -22,14 +22,14 @@ jobs:
     runs-on: depot-ubuntu-22.04-32
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: ruff
           fetch-depth: 0
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:

.github/workflows/typing_conformance.yaml

@@ -32,13 +32,13 @@ jobs:
     runs-on: depot-ubuntu-22.04-32
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           path: ruff
           fetch-depth: 0
           persist-credentials: false
 
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           repository: python/typing
           ref: ${{ env.CONFORMANCE_SUITE_COMMIT }}

BREAKING_CHANGES.md

@@ -1,5 +1,44 @@
 # Breaking Changes
 
+## 0.13.0
+
+- **Several rules can now add `from __future__ import annotations` automatically**
+
+    `TC001`, `TC002`, `TC003`, `RUF013`, and `UP037` now add `from __future__ import annotations` as part of their fixes when the
+    `lint.future-annotations` setting is enabled. This allows the rules to move
+    more imports into `TYPE_CHECKING` blocks (`TC001`, `TC002`, and `TC003`),
+    use PEP 604 union syntax on Python versions before 3.10 (`RUF013`), and
+    unquote more annotations (`UP037`).
+
+- **Full module paths are now used to verify first-party modules**
+
+    Ruff now checks that the full path to a module exists on disk before
+    categorizing it as a first-party import. This change makes first-party
+    import detection more accurate, helping to avoid false positives on local
+    directories with the same name as a third-party dependency, for example. See
+    the [FAQ
+    section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc) on import categorization for more details.
+
+- **Deprecated rules must now be selected by exact rule code**
+
+    Ruff will no longer activate deprecated rules selected by their group name
+    or prefix. As noted below, the two remaining deprecated rules were also
+    removed in this release, so this won't affect any current rules, but it will
+    still affect any deprecations in the future.
+
+- **The deprecated macOS configuration directory fallback has been removed**
+
+    Ruff will no longer look for a user-level configuration file at
+    `~/Library/Application Support/ruff/ruff.toml` on macOS. This feature was
+    deprecated in v0.5 in favor of using the [XDG
+    specification](https://specifications.freedesktop.org/basedir-spec/latest/)
+    (usually resolving to `~/.config/ruff/ruff.toml`), like on Linux. The
+    fallback and accompanying deprecation warning have now been removed.
+
+- **[`pandas-df-variable-name`](https://docs.astral.sh/ruff/rules/pandas-df-variable-name) (`PD901`) has been removed**
+
+- **[`non-pep604-isinstance`](https://docs.astral.sh/ruff/rules/non-pep604-isinstance) (`UP038`) has been removed**
+
 ## 0.12.0
 
 - **Detection of more syntax errors**

CHANGELOG.md

@@ -1,490 +1,119 @@
 # Changelog
 
-## 0.12.10
+## 0.13.0
 
-### Preview features
-
-- \[`flake8-simplify`\] Implement fix for `maxsplit` without separator (`SIM905`) ([#19851](https://github.com/astral-sh/ruff/pull/19851))
-- \[`flake8-use-pathlib`\] Add fixes for `PTH102` and `PTH103` ([#19514](https://github.com/astral-sh/ruff/pull/19514))
-
-### Bug fixes
-
-- \[`isort`\] Handle multiple continuation lines after module docstring (`I002`) ([#19818](https://github.com/astral-sh/ruff/pull/19818))
-- \[`pyupgrade`\] Avoid reporting `__future__` features as unnecessary when they are used (`UP010`) ([#19769](https://github.com/astral-sh/ruff/pull/19769))
-- \[`pyupgrade`\] Handle nested `Optional`s (`UP045`) ([#19770](https://github.com/astral-sh/ruff/pull/19770))
-
-### Rule changes
-
-- \[`pycodestyle`\] Make `E731` fix unsafe instead of display-only for class assignments ([#19700](https://github.com/astral-sh/ruff/pull/19700))
-- \[`pyflakes`\] Add secondary annotation showing previous definition (`F811`) ([#19900](https://github.com/astral-sh/ruff/pull/19900))
-
-### Documentation
-
-- Fix description of global config file discovery strategy ([#19188](https://github.com/astral-sh/ruff/pull/19188))
-- Update outdated links to <https://typing.python.org/en/latest/source/stubs.html> ([#19992](https://github.com/astral-sh/ruff/pull/19992))
-- \[`flake8-annotations`\] Remove unused import in example (`ANN401`) ([#20000](https://github.com/astral-sh/ruff/pull/20000))
-
-## 0.12.9
-
-### Preview features
-
-- \[`airflow`\] Add check for `airflow.secrets.cache.SecretCache` (`AIR301`) ([#17707](https://github.com/astral-sh/ruff/pull/17707))
-- \[`ruff`\] Offer a safe fix for multi-digit zeros (`RUF064`) ([#19847](https://github.com/astral-sh/ruff/pull/19847))
-
-### Bug fixes
-
-- \[`flake8-blind-except`\] Fix `BLE001` false-positive on `raise ... from None` ([#19755](https://github.com/astral-sh/ruff/pull/19755))
-- \[`flake8-comprehensions`\] Fix false positive for `C420` with attribute, subscript, or slice assignment targets ([#19513](https://github.com/astral-sh/ruff/pull/19513))
-- \[`flake8-simplify`\] Fix handling of U+001C..U+001F whitespace (`SIM905`) ([#19849](https://github.com/astral-sh/ruff/pull/19849))
-
-### Rule changes
-
-- \[`pylint`\] Use lowercase hex characters to match the formatter (`PLE2513`) ([#19808](https://github.com/astral-sh/ruff/pull/19808))
-
-### Documentation
-
-- Fix `lint.future-annotations` link ([#19876](https://github.com/astral-sh/ruff/pull/19876))
-
-### Other changes
-
-- Build `riscv64` binaries for release ([#19819](https://github.com/astral-sh/ruff/pull/19819))
-
-- Add rule code to error description in GitLab output ([#19896](https://github.com/astral-sh/ruff/pull/19896))
-
-- Improve rendering of the `full` output format ([#19415](https://github.com/astral-sh/ruff/pull/19415))
-
-    Below is an example diff for [`F401`](https://docs.astral.sh/ruff/rules/unused-import/):
-
-    ```diff
-    -unused.py:8:19: F401 [*] `pathlib` imported but unused
-    +F401 [*] `pathlib` imported but unused
-    +  --> unused.py:8:19
-        |
-      7 | # Unused, _not_ marked as required (due to the alias).
-      8 | import pathlib as non_alias
-    -   |                   ^^^^^^^^^ F401
-    +   |                   ^^^^^^^^^
-      9 |
-     10 | # Unused, marked as required.
-        |
-    -   = help: Remove unused import: `pathlib`
-    +help: Remove unused import: `pathlib`
-    ```
-
-    For now, the primary difference is the movement of the filename, line number, and column information to a second line in the header. This new representation will allow us to make further additions to Ruff's diagnostics, such as adding sub-diagnostics and multiple annotations to the same snippet.
-
-## 0.12.8
-
-### Preview features
-
-- \[`flake8-use-pathlib`\] Expand `PTH201` to check all `PurePath` subclasses ([#19440](https://github.com/astral-sh/ruff/pull/19440))
-
-### Bug fixes
-
-- \[`flake8-blind-except`\] Change `BLE001` to correctly parse exception tuples ([#19747](https://github.com/astral-sh/ruff/pull/19747))
-- \[`flake8-errmsg`\] Exclude `typing.cast` from `EM101` ([#19656](https://github.com/astral-sh/ruff/pull/19656))
-- \[`flake8-simplify`\] Fix raw string handling in `SIM905` for embedded quotes ([#19591](https://github.com/astral-sh/ruff/pull/19591))
-- \[`flake8-import-conventions`\] Avoid false positives for NFKC-normalized `__debug__` import aliases in `ICN001` ([#19411](https://github.com/astral-sh/ruff/pull/19411))
-- \[`isort`\] Fix syntax error after docstring ending with backslash (`I002`) ([#19505](https://github.com/astral-sh/ruff/pull/19505))
-- \[`pylint`\] Mark `PLC0207` fixes as unsafe when `*args` unpacking is present ([#19679](https://github.com/astral-sh/ruff/pull/19679))
-- \[`pyupgrade`\] Prevent infinite loop with `I002` (`UP010`, `UP035`) ([#19413](https://github.com/astral-sh/ruff/pull/19413))
-- \[`ruff`\] Parenthesize generator expressions in f-strings (`RUF010`) ([#19434](https://github.com/astral-sh/ruff/pull/19434))
-
-### Rule changes
-
-- \[`eradicate`\] Don't flag `pyrefly` pragmas as unused code (`ERA001`) ([#19731](https://github.com/astral-sh/ruff/pull/19731))
-
-### Documentation
-
-- Replace "associative" with "commutative" in docs for `RUF036` ([#19706](https://github.com/astral-sh/ruff/pull/19706))
-- Fix copy and line separator colors in dark mode ([#19630](https://github.com/astral-sh/ruff/pull/19630))
-- Fix link to `typing` documentation ([#19648](https://github.com/astral-sh/ruff/pull/19648))
-- \[`refurb`\] Make more examples error out-of-the-box ([#19695](https://github.com/astral-sh/ruff/pull/19695),[#19673](https://github.com/astral-sh/ruff/pull/19673),[#19672](https://github.com/astral-sh/ruff/pull/19672))
-
-### Other changes
-
-- Include column numbers in GitLab output format ([#19708](https://github.com/astral-sh/ruff/pull/19708))
-- Always expand tabs to four spaces in diagnostics ([#19618](https://github.com/astral-sh/ruff/pull/19618))
-- Update pre-commit's `ruff` id ([#19654](https://github.com/astral-sh/ruff/pull/19654))
-
-## 0.12.7
-
-This is a follow-up release to 0.12.6. Because of an issue in the package metadata, 0.12.6 failed to publish fully to PyPI and has been yanked. Similarly, there is no GitHub release or Git tag for 0.12.6. The contents of the 0.12.7 release are identical to 0.12.6, except for the updated metadata.
-
-## 0.12.6
-
-### Preview features
-
-- \[`flake8-commas`\] Add support for trailing comma checks in type parameter lists (`COM812`, `COM819`) ([#19390](https://github.com/astral-sh/ruff/pull/19390))
-- \[`pylint`\] Implement auto-fix for `missing-maxsplit-arg` (`PLC0207`) ([#19387](https://github.com/astral-sh/ruff/pull/19387))
-- \[`ruff`\] Offer fixes for `RUF039` in more cases ([#19065](https://github.com/astral-sh/ruff/pull/19065))
-
-### Bug fixes
-
-- Support `.pyi` files in ruff analyze graph ([#19611](https://github.com/astral-sh/ruff/pull/19611))
-- \[`flake8-pyi`\] Preserve inline comment in ellipsis removal (`PYI013`) ([#19399](https://github.com/astral-sh/ruff/pull/19399))
-- \[`perflint`\] Ignore rule if target is `global` or `nonlocal` (`PERF401`) ([#19539](https://github.com/astral-sh/ruff/pull/19539))
-- \[`pyupgrade`\] Fix `UP030` to avoid modifying double curly braces in format strings ([#19378](https://github.com/astral-sh/ruff/pull/19378))
-- \[`refurb`\] Ignore decorated functions for `FURB118` ([#19339](https://github.com/astral-sh/ruff/pull/19339))
-- \[`refurb`\] Mark `int` and `bool` cases for `Decimal.from_float` as safe fixes (`FURB164`) ([#19468](https://github.com/astral-sh/ruff/pull/19468))
-- \[`ruff`\] Fix `RUF033` for named default expressions ([#19115](https://github.com/astral-sh/ruff/pull/19115))
-
-### Rule changes
-
-- \[`flake8-blind-except`\] Change `BLE001` to permit `logging.critical(..., exc_info=True)` ([#19520](https://github.com/astral-sh/ruff/pull/19520))
-
-### Performance
-
-- Add support for specifying minimum dots in detected string imports ([#19538](https://github.com/astral-sh/ruff/pull/19538))
-
-## 0.12.5
-
-### Preview features
-
-- \[`flake8-use-pathlib`\] Add autofix for `PTH101`, `PTH104`, `PTH105`, `PTH121` ([#19404](https://github.com/astral-sh/ruff/pull/19404))
-- \[`ruff`\] Support byte strings (`RUF055`) ([#18926](https://github.com/astral-sh/ruff/pull/18926))
-
-### Bug fixes
-
-- Fix `unreachable` panic in parser ([#19183](https://github.com/astral-sh/ruff/pull/19183))
-- \[`flake8-pyi`\] Skip fix if all `Union` members are `None` (`PYI016`) ([#19416](https://github.com/astral-sh/ruff/pull/19416))
-- \[`perflint`\] Parenthesize generator expressions (`PERF401`) ([#19325](https://github.com/astral-sh/ruff/pull/19325))
-- \[`pylint`\] Handle empty comments after line continuation (`PLR2044`) ([#19405](https://github.com/astral-sh/ruff/pull/19405))
-
-### Rule changes
-
-- \[`pep8-naming`\] Fix `N802` false positives for `CGIHTTPRequestHandler` and `SimpleHTTPRequestHandler` ([#19432](https://github.com/astral-sh/ruff/pull/19432))
-
-## 0.12.4
-
-### Preview features
-
-- \[`flake8-type-checking`, `pyupgrade`, `ruff`\] Add `from __future__ import annotations` when it would allow new fixes (`TC001`, `TC002`, `TC003`, `UP037`, `RUF013`) ([#19100](https://github.com/astral-sh/ruff/pull/19100))
-- \[`flake8-use-pathlib`\] Add autofix for `PTH109` ([#19245](https://github.com/astral-sh/ruff/pull/19245))
-- \[`pylint`\] Detect indirect `pathlib.Path` usages for `unspecified-encoding` (`PLW1514`) ([#19304](https://github.com/astral-sh/ruff/pull/19304))
-
-### Bug fixes
-
-- \[`flake8-bugbear`\] Fix `B017` false negatives for keyword exception arguments ([#19217](https://github.com/astral-sh/ruff/pull/19217))
-- \[`flake8-use-pathlib`\] Fix false negative on direct `Path()` instantiation (`PTH210`) ([#19388](https://github.com/astral-sh/ruff/pull/19388))
-- \[`flake8-django`\] Fix `DJ008` false positive for abstract models with type-annotated `abstract` field ([#19221](https://github.com/astral-sh/ruff/pull/19221))
-- \[`isort`\] Fix `I002` import insertion after docstring with multiple string statements ([#19222](https://github.com/astral-sh/ruff/pull/19222))
-- \[`isort`\] Treat form feed as valid whitespace before a semicolon ([#19343](https://github.com/astral-sh/ruff/pull/19343))
-- \[`pydoclint`\] Fix `SyntaxError` from fixes with line continuations (`D201`, `D202`) ([#19246](https://github.com/astral-sh/ruff/pull/19246))
-- \[`refurb`\] `FURB164` fix should validate arguments and should usually be marked unsafe ([#19136](https://github.com/astral-sh/ruff/pull/19136))
-
-### Rule changes
-
-- \[`flake8-use-pathlib`\] Skip single dots for `invalid-pathlib-with-suffix` (`PTH210`) on versions >= 3.14 ([#19331](https://github.com/astral-sh/ruff/pull/19331))
-- \[`pep8_naming`\] Avoid false positives on standard library functions with uppercase names (`N802`) ([#18907](https://github.com/astral-sh/ruff/pull/18907))
-- \[`pycodestyle`\] Handle brace escapes for t-strings in logical lines ([#19358](https://github.com/astral-sh/ruff/pull/19358))
-- \[`pylint`\] Extend invalid string character rules to include t-strings ([#19355](https://github.com/astral-sh/ruff/pull/19355))
-- \[`ruff`\] Allow `strict` kwarg when checking for `starmap-zip` (`RUF058`) in Python 3.14+ ([#19333](https://github.com/astral-sh/ruff/pull/19333))
-
-### Documentation
-
-- \[`flake8-type-checking`\] Make `TC010` docs example more realistic ([#19356](https://github.com/astral-sh/ruff/pull/19356))
-- Make more documentation examples error out-of-the-box ([#19288](https://github.com/astral-sh/ruff/pull/19288),[#19272](https://github.com/astral-sh/ruff/pull/19272),[#19291](https://github.com/astral-sh/ruff/pull/19291),[#19296](https://github.com/astral-sh/ruff/pull/19296),[#19292](https://github.com/astral-sh/ruff/pull/19292),[#19295](https://github.com/astral-sh/ruff/pull/19295),[#19297](https://github.com/astral-sh/ruff/pull/19297),[#19309](https://github.com/astral-sh/ruff/pull/19309))
-
-## 0.12.3
-
-### Preview features
-
-- \[`flake8-bugbear`\] Support non-context-manager calls in `B017` ([#19063](https://github.com/astral-sh/ruff/pull/19063))
-- \[`flake8-use-pathlib`\] Add autofixes for `PTH100`, `PTH106`, `PTH107`, `PTH108`, `PTH110`, `PTH111`, `PTH112`, `PTH113`, `PTH114`, `PTH115`, `PTH117`, `PTH119`, `PTH120` ([#19213](https://github.com/astral-sh/ruff/pull/19213))
-- \[`flake8-use-pathlib`\] Add autofixes for `PTH203`, `PTH204`, `PTH205` ([#18922](https://github.com/astral-sh/ruff/pull/18922))
-
-### Bug fixes
-
-- \[`flake8-return`\] Fix false-positive for variables used inside nested functions in `RET504` ([#18433](https://github.com/astral-sh/ruff/pull/18433))
-- Treat form feed as valid whitespace before a line continuation ([#19220](https://github.com/astral-sh/ruff/pull/19220))
-- \[`flake8-type-checking`\] Fix syntax error introduced by fix (`TC008`) ([#19150](https://github.com/astral-sh/ruff/pull/19150))
-- \[`pyupgrade`\] Keyword arguments in `super` should suppress the `UP008` fix ([#19131](https://github.com/astral-sh/ruff/pull/19131))
-
-### Documentation
-
-- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI007`, `PYI008`) ([#19103](https://github.com/astral-sh/ruff/pull/19103))
-- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM116`) ([#19111](https://github.com/astral-sh/ruff/pull/19111))
-- \[`flake8-type-checking`\] Make example error out-of-the-box (`TC001`) ([#19151](https://github.com/astral-sh/ruff/pull/19151))
-- \[`flake8-use-pathlib`\] Make example error out-of-the-box (`PTH210`) ([#19189](https://github.com/astral-sh/ruff/pull/19189))
-- \[`pycodestyle`\] Make example error out-of-the-box (`E272`) ([#19191](https://github.com/astral-sh/ruff/pull/19191))
-- \[`pycodestyle`\] Make example not raise unnecessary `SyntaxError` (`E114`) ([#19190](https://github.com/astral-sh/ruff/pull/19190))
-- \[`pydoclint`\] Make example error out-of-the-box (`DOC501`) ([#19218](https://github.com/astral-sh/ruff/pull/19218))
-- \[`pylint`, `pyupgrade`\] Fix syntax errors in examples (`PLW1501`, `UP028`) ([#19127](https://github.com/astral-sh/ruff/pull/19127))
-- \[`pylint`\] Update `missing-maxsplit-arg` docs and error to suggest proper usage (`PLC0207`) ([#18949](https://github.com/astral-sh/ruff/pull/18949))
-- \[`flake8-bandit`\] Make example error out-of-the-box (`S412`) ([#19241](https://github.com/astral-sh/ruff/pull/19241))
-
-## 0.12.2
-
-### Preview features
-
-- \[`flake8-pyi`\] Expand `Optional[A]` to `A | None` (`PYI016`) ([#18572](https://github.com/astral-sh/ruff/pull/18572))
-- \[`pyupgrade`\] Mark `UP008` fix safe if no comments are in range ([#18683](https://github.com/astral-sh/ruff/pull/18683))
-
-### Bug fixes
-
-- \[`flake8-comprehensions`\] Fix `C420` to prepend whitespace when needed ([#18616](https://github.com/astral-sh/ruff/pull/18616))
-- \[`perflint`\] Fix `PERF403` panic on attribute or subscription loop variable ([#19042](https://github.com/astral-sh/ruff/pull/19042))
-- \[`pydocstyle`\] Fix `D413` infinite loop for parenthesized docstring ([#18930](https://github.com/astral-sh/ruff/pull/18930))
-- \[`pylint`\] Fix `PLW0108` autofix introducing a syntax error when the lambda's body contains an assignment expression ([#18678](https://github.com/astral-sh/ruff/pull/18678))
-- \[`refurb`\] Fix false positive on empty tuples (`FURB168`) ([#19058](https://github.com/astral-sh/ruff/pull/19058))
-- \[`ruff`\] Allow more `field` calls from `attrs` (`RUF009`) ([#19021](https://github.com/astral-sh/ruff/pull/19021))
-- \[`ruff`\] Fix syntax error introduced for an empty string followed by a u-prefixed string (`UP025`) ([#18899](https://github.com/astral-sh/ruff/pull/18899))
-
-### Rule changes
-
-- \[`flake8-executable`\] Allow `uvx` in shebang line (`EXE003`) ([#18967](https://github.com/astral-sh/ruff/pull/18967))
-- \[`pandas`\] Avoid flagging `PD002` if `pandas` is not imported ([#18963](https://github.com/astral-sh/ruff/pull/18963))
-- \[`pyupgrade`\] Avoid PEP-604 unions with `typing.NamedTuple` (`UP007`, `UP045`) ([#18682](https://github.com/astral-sh/ruff/pull/18682))
-
-### Documentation
-
-- Document link between `import-outside-top-level (PLC0415)` and `lint.flake8-tidy-imports.banned-module-level-imports` ([#18733](https://github.com/astral-sh/ruff/pull/18733))
-- Fix description of the `format.skip-magic-trailing-comma` example ([#19095](https://github.com/astral-sh/ruff/pull/19095))
-- \[`airflow`\] Make `AIR302` example error out-of-the-box ([#18988](https://github.com/astral-sh/ruff/pull/18988))
-- \[`airflow`\] Make `AIR312` example error out-of-the-box ([#18989](https://github.com/astral-sh/ruff/pull/18989))
-- \[`flake8-annotations`\] Make `ANN401` example error out-of-the-box ([#18974](https://github.com/astral-sh/ruff/pull/18974))
-- \[`flake8-async`\] Make `ASYNC100` example error out-of-the-box ([#18993](https://github.com/astral-sh/ruff/pull/18993))
-- \[`flake8-async`\] Make `ASYNC105` example error out-of-the-box ([#19002](https://github.com/astral-sh/ruff/pull/19002))
-- \[`flake8-async`\] Make `ASYNC110` example error out-of-the-box ([#18975](https://github.com/astral-sh/ruff/pull/18975))
-- \[`flake8-async`\] Make `ASYNC210` example error out-of-the-box ([#18977](https://github.com/astral-sh/ruff/pull/18977))
-- \[`flake8-async`\] Make `ASYNC220`, `ASYNC221`, and `ASYNC222` examples error out-of-the-box ([#18978](https://github.com/astral-sh/ruff/pull/18978))
-- \[`flake8-async`\] Make `ASYNC251` example error out-of-the-box ([#18990](https://github.com/astral-sh/ruff/pull/18990))
-- \[`flake8-bandit`\] Make `S201` example error out-of-the-box ([#19017](https://github.com/astral-sh/ruff/pull/19017))
-- \[`flake8-bandit`\] Make `S604` and `S609` examples error out-of-the-box ([#19049](https://github.com/astral-sh/ruff/pull/19049))
-- \[`flake8-bugbear`\] Make `B028` example error out-of-the-box ([#19054](https://github.com/astral-sh/ruff/pull/19054))
-- \[`flake8-bugbear`\] Make `B911` example error out-of-the-box ([#19051](https://github.com/astral-sh/ruff/pull/19051))
-- \[`flake8-datetimez`\] Make `DTZ011` example error out-of-the-box ([#19055](https://github.com/astral-sh/ruff/pull/19055))
-- \[`flake8-datetimez`\] Make `DTZ901` example error out-of-the-box ([#19056](https://github.com/astral-sh/ruff/pull/19056))
-- \[`flake8-pyi`\] Make `PYI032` example error out-of-the-box ([#19061](https://github.com/astral-sh/ruff/pull/19061))
-- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI014`, `PYI015`) ([#19097](https://github.com/astral-sh/ruff/pull/19097))
-- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI042`) ([#19101](https://github.com/astral-sh/ruff/pull/19101))
-- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI059`) ([#19080](https://github.com/astral-sh/ruff/pull/19080))
-- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI062`) ([#19079](https://github.com/astral-sh/ruff/pull/19079))
-- \[`flake8-pytest-style`\] Make example error out-of-the-box (`PT023`) ([#19104](https://github.com/astral-sh/ruff/pull/19104))
-- \[`flake8-pytest-style`\] Make example error out-of-the-box (`PT030`) ([#19105](https://github.com/astral-sh/ruff/pull/19105))
-- \[`flake8-quotes`\] Make example error out-of-the-box (`Q003`) ([#19106](https://github.com/astral-sh/ruff/pull/19106))
-- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM110`) ([#19113](https://github.com/astral-sh/ruff/pull/19113))
-- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM113`) ([#19109](https://github.com/astral-sh/ruff/pull/19109))
-- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM401`) ([#19110](https://github.com/astral-sh/ruff/pull/19110))
-- \[`pyflakes`\] Fix backslash in docs (`F621`) ([#19098](https://github.com/astral-sh/ruff/pull/19098))
-- \[`pylint`\] Fix `PLC0415` example ([#18970](https://github.com/astral-sh/ruff/pull/18970))
-
-## 0.12.1
-
-### Preview features
-
-- \[`flake8-errmsg`\] Extend `EM101` to support byte strings ([#18867](https://github.com/astral-sh/ruff/pull/18867))
-- \[`flake8-use-pathlib`\] Add autofix for `PTH202` ([#18763](https://github.com/astral-sh/ruff/pull/18763))
-- \[`pygrep-hooks`\] Add `AsyncMock` methods to `invalid-mock-access` (`PGH005`) ([#18547](https://github.com/astral-sh/ruff/pull/18547))
-- \[`pylint`\] Ignore `__init__.py` files in (`PLC0414`) ([#18400](https://github.com/astral-sh/ruff/pull/18400))
-- \[`ruff`\] Trigger `RUF037` for empty string and byte strings ([#18862](https://github.com/astral-sh/ruff/pull/18862))
-- [formatter] Fix missing blank lines before decorated classes in `.pyi` files ([#18888](https://github.com/astral-sh/ruff/pull/18888))
-
-### Bug fixes
-
-- Avoid generating diagnostics with per-file ignores ([#18801](https://github.com/astral-sh/ruff/pull/18801))
-- Handle parenthesized arguments in `remove_argument` ([#18805](https://github.com/astral-sh/ruff/pull/18805))
-- \[`flake8-logging`\] Avoid false positive for `exc_info=True` outside `logger.exception` (`LOG014`) ([#18737](https://github.com/astral-sh/ruff/pull/18737))
-- \[`flake8-pytest-style`\] Enforce `pytest` import for decorators ([#18779](https://github.com/astral-sh/ruff/pull/18779))
-- \[`flake8-pytest-style`\] Mark autofix for `PT001` and `PT023` as unsafe if there's comments in the decorator ([#18792](https://github.com/astral-sh/ruff/pull/18792))
-- \[`flake8-pytest-style`\] `PT001`/`PT023` fix makes syntax error on parenthesized decorator ([#18782](https://github.com/astral-sh/ruff/pull/18782))
-- \[`flake8-raise`\] Make fix unsafe if it deletes comments (`RSE102`) ([#18788](https://github.com/astral-sh/ruff/pull/18788))
-- \[`flake8-simplify`\] Fix `SIM911` autofix creating a syntax error ([#18793](https://github.com/astral-sh/ruff/pull/18793))
-- \[`flake8-simplify`\] Fix false negatives for shadowed bindings (`SIM910`, `SIM911`) ([#18794](https://github.com/astral-sh/ruff/pull/18794))
-- \[`flake8-simplify`\] Preserve original behavior for `except ()` and bare `except` (`SIM105`) ([#18213](https://github.com/astral-sh/ruff/pull/18213))
-- \[`flake8-pyi`\] Fix `PYI041`'s fix causing `TypeError` with `None | None | ...` ([#18637](https://github.com/astral-sh/ruff/pull/18637))
-- \[`perflint`\] Fix `PERF101` autofix creating a syntax error and mark autofix as unsafe if there are comments in the `list` call expr ([#18803](https://github.com/astral-sh/ruff/pull/18803))
-- \[`perflint`\] Fix false negative in `PERF401` ([#18866](https://github.com/astral-sh/ruff/pull/18866))
-- \[`pylint`\] Avoid flattening nested `min`/`max` when outer call has single argument (`PLW3301`) ([#16885](https://github.com/astral-sh/ruff/pull/16885))
-- \[`pylint`\] Fix `PLC2801` autofix creating a syntax error ([#18857](https://github.com/astral-sh/ruff/pull/18857))
-- \[`pylint`\] Mark `PLE0241` autofix as unsafe if there's comments in the base classes ([#18832](https://github.com/astral-sh/ruff/pull/18832))
-- \[`pylint`\] Suppress `PLE2510`/`PLE2512`/`PLE2513`/`PLE2514`/`PLE2515` autofix if the text contains an odd number of backslashes ([#18856](https://github.com/astral-sh/ruff/pull/18856))
-- \[`refurb`\] Detect more exotic float literals in `FURB164` ([#18925](https://github.com/astral-sh/ruff/pull/18925))
-- \[`refurb`\] Fix `FURB163` autofix creating a syntax error for `yield` expressions ([#18756](https://github.com/astral-sh/ruff/pull/18756))
-- \[`refurb`\] Mark `FURB129` autofix as unsafe if there's comments in the `readlines` call ([#18858](https://github.com/astral-sh/ruff/pull/18858))
-- \[`ruff`\] Fix false positives and negatives in `RUF010` ([#18690](https://github.com/astral-sh/ruff/pull/18690))
-- Fix casing of `analyze.direction` variant names ([#18892](https://github.com/astral-sh/ruff/pull/18892))
-
-### Rule changes
-
-- Fix f-string interpolation escaping in generated fixes ([#18882](https://github.com/astral-sh/ruff/pull/18882))
-- \[`flake8-return`\] Mark `RET501` fix unsafe if comments are inside ([#18780](https://github.com/astral-sh/ruff/pull/18780))
-- \[`flake8-async`\] Fix detection for large integer sleep durations in `ASYNC116` rule ([#18767](https://github.com/astral-sh/ruff/pull/18767))
-- \[`flake8-async`\] Mark autofix for `ASYNC115` as unsafe if the call expression contains comments ([#18753](https://github.com/astral-sh/ruff/pull/18753))
-- \[`flake8-bugbear`\] Mark autofix for `B004` as unsafe if the `hasattr` call expr contains comments ([#18755](https://github.com/astral-sh/ruff/pull/18755))
-- \[`flake8-comprehension`\] Mark autofix for `C420` as unsafe if there's comments inside the dict comprehension ([#18768](https://github.com/astral-sh/ruff/pull/18768))
-- \[`flake8-comprehensions`\] Handle template strings for comprehension fixes ([#18710](https://github.com/astral-sh/ruff/pull/18710))
-- \[`flake8-future-annotations`\] Add autofix (`FA100`) ([#18903](https://github.com/astral-sh/ruff/pull/18903))
-- \[`pyflakes`\] Mark `F504`/`F522`/`F523` autofix as unsafe if there's a call with side effect ([#18839](https://github.com/astral-sh/ruff/pull/18839))
-- \[`pylint`\] Allow fix with comments and document performance implications (`PLW3301`) ([#18936](https://github.com/astral-sh/ruff/pull/18936))
-- \[`pylint`\] Detect more exotic `NaN` literals in `PLW0177` ([#18630](https://github.com/astral-sh/ruff/pull/18630))
-- \[`pylint`\] Fix `PLC1802` autofix creating a syntax error and mark autofix as unsafe if there's comments in the `len` call ([#18836](https://github.com/astral-sh/ruff/pull/18836))
-- \[`pyupgrade`\] Extend version detection to include `sys.version_info.major` (`UP036`) ([#18633](https://github.com/astral-sh/ruff/pull/18633))
-- \[`ruff`\] Add lint rule `RUF064` for calling `chmod` with non-octal integers ([#18541](https://github.com/astral-sh/ruff/pull/18541))
-- \[`ruff`\] Added `cls.__dict__.get('__annotations__')` check (`RUF063`) ([#18233](https://github.com/astral-sh/ruff/pull/18233))
-- \[`ruff`\] Frozen `dataclass` default should be valid (`RUF009`) ([#18735](https://github.com/astral-sh/ruff/pull/18735))
-
-### Server
-
-- Consider virtual path for various server actions ([#18910](https://github.com/astral-sh/ruff/pull/18910))
-
-### Documentation
-
-- Add fix safety sections ([#18940](https://github.com/astral-sh/ruff/pull/18940),[#18841](https://github.com/astral-sh/ruff/pull/18841),[#18802](https://github.com/astral-sh/ruff/pull/18802),[#18837](https://github.com/astral-sh/ruff/pull/18837),[#18800](https://github.com/astral-sh/ruff/pull/18800),[#18415](https://github.com/astral-sh/ruff/pull/18415),[#18853](https://github.com/astral-sh/ruff/pull/18853),[#18842](https://github.com/astral-sh/ruff/pull/18842))
-- Use updated pre-commit id ([#18718](https://github.com/astral-sh/ruff/pull/18718))
-- \[`perflint`\] Small docs improvement to `PERF401` ([#18786](https://github.com/astral-sh/ruff/pull/18786))
-- \[`pyupgrade`\]: Use `super()`, not `__super__` in error messages (`UP008`) ([#18743](https://github.com/astral-sh/ruff/pull/18743))
-- \[`flake8-pie`\] Small docs fix to `PIE794` ([#18829](https://github.com/astral-sh/ruff/pull/18829))
-- \[`flake8-pyi`\] Correct `collections-named-tuple` example to use PascalCase assignment ([#16884](https://github.com/astral-sh/ruff/pull/16884))
-- \[`flake8-pie`\] Add note on type checking benefits to `unnecessary-dict-kwargs` (`PIE804`) ([#18666](https://github.com/astral-sh/ruff/pull/18666))
-- \[`pycodestyle`\] Clarify PEP 8 relationship to `whitespace-around-operator` rules ([#18870](https://github.com/astral-sh/ruff/pull/18870))
-
-### Other changes
-
-- Disallow newlines in format specifiers of single quoted f- or t-strings ([#18708](https://github.com/astral-sh/ruff/pull/18708))
-- \[`flake8-logging`\] Add fix safety section to `LOG002` ([#18840](https://github.com/astral-sh/ruff/pull/18840))
-- \[`pyupgrade`\] Add fix safety section to `UP010` ([#18838](https://github.com/astral-sh/ruff/pull/18838))
-
-## 0.12.0
-
-Check out the [blog post](https://astral.sh/blog/ruff-v0.12.0) for a migration
+Check out the [blog post](https://astral.sh/blog/ruff-v0.13.0) for a migration
 guide and overview of the changes!
 
 ### Breaking changes
 
-- **Detection of more syntax errors**
+- **Several rules can now add `from __future__ import annotations` automatically**
 
-    Ruff now detects version-related syntax errors, such as the use of the `match`
-    statement on Python versions before 3.10, and syntax errors emitted by
-    CPython's compiler, such as irrefutable `match` patterns before the final
-    `case` arm.
+    `TC001`, `TC002`, `TC003`, `RUF013`, and `UP037` now add `from __future__ import annotations` as part of their fixes when the
+    `lint.future-annotations` setting is enabled. This allows the rules to move
+    more imports into `TYPE_CHECKING` blocks (`TC001`, `TC002`, and `TC003`),
+    use PEP 604 union syntax on Python versions before 3.10 (`RUF013`), and
+    unquote more annotations (`UP037`).
 
-- **New default Python version handling for syntax errors**
+- **Full module paths are now used to verify first-party modules**
 
-    Ruff will default to the *latest* supported Python version (3.13) when
-    checking for the version-related syntax errors mentioned above to prevent
-    false positives in projects without a Python version configured. The default
-    in all other cases, like applying lint rules, is unchanged and remains at the
-    minimum supported Python version (3.9).
+    Ruff now checks that the full path to a module exists on disk before
+    categorizing it as a first-party import. This change makes first-party
+    import detection more accurate, helping to avoid false positives on local
+    directories with the same name as a third-party dependency, for example. See
+    the [FAQ
+    section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc) on import categorization for more details.
 
-- **Updated f-string formatting**
+- **Deprecated rules must now be selected by exact rule code**
 
-    Ruff now formats multi-line f-strings with format specifiers to avoid adding a
-    line break after the format specifier. This addresses a change to the Python
-    grammar in version 3.13.4 that made such a line break a syntax error.
+    Ruff will no longer activate deprecated rules selected by their group name
+    or prefix. As noted below, the two remaining deprecated rules were also
+    removed in this release, so this won't affect any current rules, but it will
+    still affect any deprecations in the future.
 
-- **`rust-toolchain.toml` is no longer included in source distributions**
+- **The deprecated macOS configuration directory fallback has been removed**
 
-    The `rust-toolchain.toml` is used to specify a higher Rust version than Ruff's
-    minimum supported Rust version (MSRV) for development and building release
-    artifacts. However, when present in source distributions, it would also cause
-    downstream package maintainers to pull in the same Rust toolchain, even if
-    their available toolchain was MSRV-compatible.
+    Ruff will no longer look for a user-level configuration file at
+    `~/Library/Application Support/ruff/ruff.toml` on macOS. This feature was
+    deprecated in v0.5 in favor of using the [XDG
+    specification](https://specifications.freedesktop.org/basedir-spec/latest/)
+    (usually resolving to `~/.config/ruff/ruff.toml`), like on Linux. The
+    fallback and accompanying deprecation warning have now been removed.
 
 ### Removed Rules
 
 The following rules have been removed:
 
-- [`suspicious-xmle-tree-usage`](https://docs.astral.sh/ruff/rules/suspicious-xmle-tree-usage/)
-    (`S320`)
-
-### Deprecated Rules
-
-The following rules have been deprecated:
-
-- [`pandas-df-variable-name`](https://docs.astral.sh/ruff/rules/pandas-df-variable-name/)
+- [`pandas-df-variable-name`](https://docs.astral.sh/ruff/rules/pandas-df-variable-name) (`PD901`)
+- [`non-pep604-isinstance`](https://docs.astral.sh/ruff/rules/non-pep604-isinstance) (`UP038`)
 
 ### Stabilization
 
 The following rules have been stabilized and are no longer in preview:
 
-- [`for-loop-writes`](https://docs.astral.sh/ruff/rules/for-loop-writes) (`FURB122`)
-- [`check-and-remove-from-set`](https://docs.astral.sh/ruff/rules/check-and-remove-from-set) (`FURB132`)
-- [`verbose-decimal-constructor`](https://docs.astral.sh/ruff/rules/verbose-decimal-constructor) (`FURB157`)
-- [`fromisoformat-replace-z`](https://docs.astral.sh/ruff/rules/fromisoformat-replace-z) (`FURB162`)
-- [`int-on-sliced-str`](https://docs.astral.sh/ruff/rules/int-on-sliced-str) (`FURB166`)
-- [`exc-info-outside-except-handler`](https://docs.astral.sh/ruff/rules/exc-info-outside-except-handler) (`LOG014`)
-- [`import-outside-top-level`](https://docs.astral.sh/ruff/rules/import-outside-top-level) (`PLC0415`)
-- [`unnecessary-dict-index-lookup`](https://docs.astral.sh/ruff/rules/unnecessary-dict-index-lookup) (`PLR1733`)
-- [`nan-comparison`](https://docs.astral.sh/ruff/rules/nan-comparison) (`PLW0177`)
-- [`eq-without-hash`](https://docs.astral.sh/ruff/rules/eq-without-hash) (`PLW1641`)
-- [`pytest-parameter-with-default-argument`](https://docs.astral.sh/ruff/rules/pytest-parameter-with-default-argument) (`PT028`)
-- [`pytest-warns-too-broad`](https://docs.astral.sh/ruff/rules/pytest-warns-too-broad) (`PT030`)
-- [`pytest-warns-with-multiple-statements`](https://docs.astral.sh/ruff/rules/pytest-warns-with-multiple-statements) (`PT031`)
-- [`invalid-formatter-suppression-comment`](https://docs.astral.sh/ruff/rules/invalid-formatter-suppression-comment) (`RUF028`)
-- [`dataclass-enum`](https://docs.astral.sh/ruff/rules/dataclass-enum) (`RUF049`)
-- [`class-with-mixed-type-vars`](https://docs.astral.sh/ruff/rules/class-with-mixed-type-vars) (`RUF053`)
-- [`unnecessary-round`](https://docs.astral.sh/ruff/rules/unnecessary-round) (`RUF057`)
-- [`starmap-zip`](https://docs.astral.sh/ruff/rules/starmap-zip) (`RUF058`)
-- [`non-pep604-annotation-optional`] (`UP045`)
-- [`non-pep695-generic-class`](https://docs.astral.sh/ruff/rules/non-pep695-generic-class) (`UP046`)
-- [`non-pep695-generic-function`](https://docs.astral.sh/ruff/rules/non-pep695-generic-function) (`UP047`)
-- [`private-type-parameter`](https://docs.astral.sh/ruff/rules/private-type-parameter) (`UP049`)
+- [`airflow-dag-no-schedule-argument`](https://docs.astral.sh/ruff/rules/airflow-dag-no-schedule-argument)
+    (`AIR002`)
+- [`airflow3-removal`](https://docs.astral.sh/ruff/rules/airflow3-removal) (`AIR301`)
+- [`airflow3-moved-to-provider`](https://docs.astral.sh/ruff/rules/airflow3-moved-to-provider)
+    (`AIR302`)
+- [`airflow3-suggested-update`](https://docs.astral.sh/ruff/rules/airflow3-suggested-update)
+    (`AIR311`)
+- [`airflow3-suggested-to-move-to-provider`](https://docs.astral.sh/ruff/rules/airflow3-suggested-to-move-to-provider)
+    (`AIR312`)
+- [`long-sleep-not-forever`](https://docs.astral.sh/ruff/rules/long-sleep-not-forever) (`ASYNC116`)
+- [`f-string-number-format`](https://docs.astral.sh/ruff/rules/f-string-number-format) (`FURB116`)
+- [`os-symlink`](https://docs.astral.sh/ruff/rules/os-symlink) (`PTH211`)
+- [`generic-not-last-base-class`](https://docs.astral.sh/ruff/rules/generic-not-last-base-class)
+    (`PYI059`)
+- [`redundant-none-literal`](https://docs.astral.sh/ruff/rules/redundant-none-literal) (`PYI061`)
+- [`pytest-raises-ambiguous-pattern`](https://docs.astral.sh/ruff/rules/pytest-raises-ambiguous-pattern)
+    (`RUF043`)
+- [`unused-unpacked-variable`](https://docs.astral.sh/ruff/rules/unused-unpacked-variable)
+    (`RUF059`)
+- [`useless-class-metaclass-type`](https://docs.astral.sh/ruff/rules/useless-class-metaclass-type)
+    (`UP050`)
 
 The following behaviors have been stabilized:
 
-- [`collection-literal-concatenation`] (`RUF005`) now recognizes slices, in
-    addition to list literals and variables.
-- The fix for [`readlines-in-for`] (`FURB129`) is now marked as always safe.
-- [`if-else-block-instead-of-if-exp`] (`SIM108`) will now further simplify
-    expressions to use `or` instead of an `if` expression, where possible.
-- [`unused-noqa`] (`RUF100`) now checks for file-level `noqa` comments as well
-    as inline comments.
-- [`subprocess-without-shell-equals-true`] (`S603`) now accepts literal strings,
-    as well as lists and tuples of literal strings, as trusted input.
-- [`boolean-type-hint-positional-argument`] (`FBT001`) now applies to types that
-    include `bool`, like `bool | int` or `typing.Optional[bool]`, in addition to
-    plain `bool` annotations.
-- [`non-pep604-annotation-union`] (`UP007`) has now been split into two rules.
-    `UP007` now applies only to `typing.Union`, while
-    [`non-pep604-annotation-optional`] (`UP045`) checks for use of
-    `typing.Optional`. `UP045` has also been stabilized in this release, but you
-    may need to update existing `include`, `ignore`, or `noqa` settings to
-    accommodate this change.
+- [`assert-raises-exception`](https://docs.astral.sh/ruff/rules/assert-raises-exception) (`B017`)
+    now checks for direct calls to `unittest.TestCase.assert_raises` and `pytest.raises` instead of
+    only the context manager forms.
+- [`missing-trailing-comma`](https://docs.astral.sh/ruff/rules/missing-trailing-comma) (`COM812`)
+    and [`prohibited-trailing-comma`](https://docs.astral.sh/ruff/rules/prohibited-trailing-comma)
+    (`COM819`) now check for trailing commas in PEP 695 type parameter lists.
+- [`raw-string-in-exception`](https://docs.astral.sh/ruff/rules/raw-string-in-exception) (`EM101`)
+    now also checks for byte strings in exception messages.
+- [`invalid-mock-access`](https://docs.astral.sh/ruff/rules/invalid-mock-access) (`PGH005`) now
+    checks for `AsyncMock` methods like `not_awaited` in addition to the synchronous variants.
+- [`useless-import-alias`](https://docs.astral.sh/ruff/rules/useless-import-alias) (`PLC0414`) no
+    longer applies to `__init__.py` files, where it conflicted with one of the suggested fixes for
+    [`unused-import`](https://docs.astral.sh/ruff/rules/unused-import) (`F401`).
+- [`bidirectional-unicode`](https://docs.astral.sh/ruff/rules/bidirectional-unicode) (`PLE2502`) now
+    also checks for U+061C (Arabic Letter Mark).
+- The fix for
+    [`multiple-with-statements`](https://docs.astral.sh/ruff/rules/multiple-with-statements)
+    (`SIM117`) is now marked as always safe.
 
 ### Preview features
 
-- \[`ruff`\] Check for non-context-manager use of `pytest.raises`, `pytest.warns`, and `pytest.deprecated_call` (`RUF061`) ([#17368](https://github.com/astral-sh/ruff/pull/17368))
-- [syntax-errors] Raise unsupported syntax error for template strings prior to Python 3.14 ([#18664](https://github.com/astral-sh/ruff/pull/18664))
+- \[`pyupgrade`\] Enable `UP043` in stub files ([#20027](https://github.com/astral-sh/ruff/pull/20027))
 
 ### Bug fixes
 
-- Add syntax error when conversion flag does not immediately follow exclamation mark ([#18706](https://github.com/astral-sh/ruff/pull/18706))
-- Add trailing space around `readlines` ([#18542](https://github.com/astral-sh/ruff/pull/18542))
-- Fix `\r` and `\r\n` handling in t- and f-string debug texts ([#18673](https://github.com/astral-sh/ruff/pull/18673))
-- Hug closing `}` when f-string expression has a format specifier ([#18704](https://github.com/astral-sh/ruff/pull/18704))
-- \[`flake8-pyi`\] Avoid syntax error in the case of starred and keyword arguments (`PYI059`) ([#18611](https://github.com/astral-sh/ruff/pull/18611))
-- \[`flake8-return`\] Fix `RET504` autofix generating a syntax error ([#18428](https://github.com/astral-sh/ruff/pull/18428))
-- \[`pep8-naming`\] Suppress fix for `N804` and `N805` if the recommended name is already used ([#18472](https://github.com/astral-sh/ruff/pull/18472))
-- \[`pycodestyle`\] Avoid causing a syntax error in expressions spanning multiple lines (`E731`) ([#18479](https://github.com/astral-sh/ruff/pull/18479))
-- \[`pyupgrade`\] Suppress `UP008` if `super` is shadowed ([#18688](https://github.com/astral-sh/ruff/pull/18688))
-- \[`refurb`\] Parenthesize lambda and ternary expressions (`FURB122`, `FURB142`) ([#18592](https://github.com/astral-sh/ruff/pull/18592))
-- \[`ruff`\] Handle extra arguments to `deque` (`RUF037`) ([#18614](https://github.com/astral-sh/ruff/pull/18614))
-- \[`ruff`\] Preserve parentheses around `deque` in fix for `unnecessary-empty-iterable-within-deque-call` (`RUF037`) ([#18598](https://github.com/astral-sh/ruff/pull/18598))
-- \[`ruff`\] Validate arguments before offering a fix (`RUF056`) ([#18631](https://github.com/astral-sh/ruff/pull/18631))
-- \[`ruff`\] Skip fix for `RUF059` if dummy name is already bound ([#18509](https://github.com/astral-sh/ruff/pull/18509))
-- \[`pylint`\] Fix `PLW0128` to check assignment targets in square brackets and after asterisks ([#18665](https://github.com/astral-sh/ruff/pull/18665))
-
-### Rule changes
-
-- Fix false positive on mutations in `return` statements (`B909`) ([#18408](https://github.com/astral-sh/ruff/pull/18408))
-- Treat `ty:` comments as pragma comments ([#18532](https://github.com/astral-sh/ruff/pull/18532))
-- \[`flake8-pyi`\] Apply `custom-typevar-for-self` to string annotations (`PYI019`) ([#18311](https://github.com/astral-sh/ruff/pull/18311))
-- \[`pyupgrade`\] Don't offer a fix for `Optional[None]` (`UP007`, `UP045)` ([#18545](https://github.com/astral-sh/ruff/pull/18545))
-- \[`pyupgrade`\] Fix `super(__class__, self)` detection (`UP008`) ([#18478](https://github.com/astral-sh/ruff/pull/18478))
-- \[`refurb`\] Make the fix for `FURB163` unsafe for `log2`, `log10`, `*args`, and deleted comments ([#18645](https://github.com/astral-sh/ruff/pull/18645))
+- \[`pyupgrade`\] Apply `UP008` only when the `__class__` cell exists ([#19424](https://github.com/astral-sh/ruff/pull/19424))
+- \[`ruff`\] Fix empty f-string detection in `in-empty-collection` (`RUF060`) ([#20249](https://github.com/astral-sh/ruff/pull/20249))
 
 ### Server
 
-- Support cancellation requests ([#18627](https://github.com/astral-sh/ruff/pull/18627))
+- Add support for using uv as an alternative formatter backend ([#19665](https://github.com/astral-sh/ruff/pull/19665))
 
 ### Documentation
 
-- Drop confusing second `*` from glob pattern example for `per-file-target-version` ([#18709](https://github.com/astral-sh/ruff/pull/18709))
-- Update Neovim configuration examples ([#18491](https://github.com/astral-sh/ruff/pull/18491))
-- \[`pylint`\] De-emphasize `__hash__ = Parent.__hash__` (`PLW1641`) ([#18613](https://github.com/astral-sh/ruff/pull/18613))
-- \[`refurb`\] Add a note about float literal handling (`FURB157`) ([#18615](https://github.com/astral-sh/ruff/pull/18615))
+- \[`pep8-naming`\] Fix formatting of `__all__` (`N816`) ([#20301](https://github.com/astral-sh/ruff/pull/20301))
+
+## 0.12.x
+
+See [changelogs/0.12.x](./changelogs/0.12.x.md)
 
 ## 0.11.x
 
@@ -529,12 +158,3 @@ See [changelogs/0.2.x](./changelogs/0.2.x.md)
 ## 0.1.x
 
 See [changelogs/0.1.x](./changelogs/0.1.x.md)
-
-[`boolean-type-hint-positional-argument`]: https://docs.astral.sh/ruff/rules/boolean-type-hint-positional-argument
-[`collection-literal-concatenation`]: https://docs.astral.sh/ruff/rules/collection-literal-concatenation
-[`if-else-block-instead-of-if-exp`]: https://docs.astral.sh/ruff/rules/if-else-block-instead-of-if-exp
-[`non-pep604-annotation-optional`]: https://docs.astral.sh/ruff/rules/non-pep604-annotation-optional
-[`non-pep604-annotation-union`]: https://docs.astral.sh/ruff/rules/non-pep604-annotation-union
-[`readlines-in-for`]: https://docs.astral.sh/ruff/rules/readlines-in-for
-[`subprocess-without-shell-equals-true`]: https://docs.astral.sh/ruff/rules/subprocess-without-shell-equals-true
-[`unused-noqa`]: https://docs.astral.sh/ruff/rules/unused-noqa

Cargo.toml

@@ -29,6 +29,7 @@ ruff_options_metadata = { path = "crates/ruff_options_metadata" }
 ruff_python_ast = { path = "crates/ruff_python_ast" }
 ruff_python_codegen = { path = "crates/ruff_python_codegen" }
 ruff_python_formatter = { path = "crates/ruff_python_formatter" }
+ruff_python_importer = { path = "crates/ruff_python_importer" }
 ruff_python_index = { path = "crates/ruff_python_index" }
 ruff_python_literal = { path = "crates/ruff_python_literal" }
 ruff_python_parser = { path = "crates/ruff_python_parser" }
@@ -115,7 +116,7 @@ jiff = { version = "0.2.0" }
 js-sys = { version = "0.3.69" }
 jod-thread = { version = "1.0.0" }
 libc = { version = "0.2.153" }
-libcst = { version = "1.1.0", default-features = false }
+libcst = { version = "1.8.4", default-features = false }
 log = { version = "0.4.17" }
 lsp-server = { version = "0.7.6" }
 lsp-types = { git = "https://github.com/astral-sh/lsp-types.git", rev = "3512a9f", features = [
@@ -143,7 +144,7 @@ regex-automata = { version = "0.4.9" }
 rustc-hash = { version = "2.0.0" }
 rustc-stable-hash = { version = "0.1.2" }
 # When updating salsa, make sure to also update the revision in `fuzz/Cargo.toml`
-salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "a3ffa22cb26756473d56f867aedec3fd907c4dd9", default-features = false, features = [
+salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "3713cd7eb30821c0c086591832dd6f59f2af7fe7", default-features = false, features = [
     "compact_str",
     "macros",
     "salsa_unstable",
@@ -251,6 +252,14 @@ rest_pat_in_fully_bound_structs = "warn"
 redundant_clone = "warn"
 debug_assert_with_mut_call = "warn"
 unused_peekable = "warn"
+# This lint sometimes flags code whose `if` and `else`
+# bodies could be flipped when a `!` operator is removed.
+# While perhaps sometimes a good idea, it is also often
+# not a good idea due to other factors impacting
+# readability. For example, if flipping the bodies results
+# in the `if` being an order of magnitude bigger than the
+# `else`, then some might consider that harder to read.
+if_not_else = "allow"
 
 # Diagnostics are not actionable: Enable once https://github.com/rust-lang/rust-clippy/issues/13774 is resolved.
 large_stack_arrays = "allow"

README.md

@@ -148,8 +148,8 @@ curl -LsSf https://astral.sh/ruff/install.sh | sh
 powershell -c "irm https://astral.sh/ruff/install.ps1 | iex"
 
 # For a specific version.
-curl -LsSf https://astral.sh/ruff/0.12.10/install.sh | sh
-powershell -c "irm https://astral.sh/ruff/0.12.10/install.ps1 | iex"
+curl -LsSf https://astral.sh/ruff/0.13.0/install.sh | sh
+powershell -c "irm https://astral.sh/ruff/0.13.0/install.ps1 | iex"
 ```
 
 You can also install Ruff via [Homebrew](https://formulae.brew.sh/formula/ruff), [Conda](https://anaconda.org/conda-forge/ruff),
@@ -182,7 +182,7 @@ 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: v0.12.10
+  rev: v0.13.0
   hooks:
     # Run the linter.
     - id: ruff-check
@@ -421,7 +421,7 @@ 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)
+- [Albumentations](https://github.com/albumentations-team/AlbumentationsX)
 - Amazon ([AWS SAM](https://github.com/aws/serverless-application-model))
 - [Anki](https://apps.ankiweb.net/)
 - Anthropic ([Python SDK](https://github.com/anthropics/anthropic-sdk-python))

changelogs/0.12.x.md

@@ -0,0 +1,551 @@
+# Changelog 0.12.x
+
+## 0.12.0
+
+Check out the [blog post](https://astral.sh/blog/ruff-v0.12.0) for a migration
+guide and overview of the changes!
+
+### Breaking changes
+
+- **Detection of more syntax errors**
+
+    Ruff now detects version-related syntax errors, such as the use of the `match`
+    statement on Python versions before 3.10, and syntax errors emitted by
+    CPython's compiler, such as irrefutable `match` patterns before the final
+    `case` arm.
+
+- **New default Python version handling for syntax errors**
+
+    Ruff will default to the *latest* supported Python version (3.13) when
+    checking for the version-related syntax errors mentioned above to prevent
+    false positives in projects without a Python version configured. The default
+    in all other cases, like applying lint rules, is unchanged and remains at the
+    minimum supported Python version (3.9).
+
+- **Updated f-string formatting**
+
+    Ruff now formats multi-line f-strings with format specifiers to avoid adding a
+    line break after the format specifier. This addresses a change to the Python
+    grammar in version 3.13.4 that made such a line break a syntax error.
+
+- **`rust-toolchain.toml` is no longer included in source distributions**
+
+    The `rust-toolchain.toml` is used to specify a higher Rust version than Ruff's
+    minimum supported Rust version (MSRV) for development and building release
+    artifacts. However, when present in source distributions, it would also cause
+    downstream package maintainers to pull in the same Rust toolchain, even if
+    their available toolchain was MSRV-compatible.
+
+### Removed Rules
+
+The following rules have been removed:
+
+- [`suspicious-xmle-tree-usage`](https://docs.astral.sh/ruff/rules/suspicious-xmle-tree-usage/)
+    (`S320`)
+
+### Deprecated Rules
+
+The following rules have been deprecated:
+
+- [`pandas-df-variable-name`](https://docs.astral.sh/ruff/rules/pandas-df-variable-name/)
+
+### Stabilization
+
+The following rules have been stabilized and are no longer in preview:
+
+- [`for-loop-writes`](https://docs.astral.sh/ruff/rules/for-loop-writes) (`FURB122`)
+- [`check-and-remove-from-set`](https://docs.astral.sh/ruff/rules/check-and-remove-from-set) (`FURB132`)
+- [`verbose-decimal-constructor`](https://docs.astral.sh/ruff/rules/verbose-decimal-constructor) (`FURB157`)
+- [`fromisoformat-replace-z`](https://docs.astral.sh/ruff/rules/fromisoformat-replace-z) (`FURB162`)
+- [`int-on-sliced-str`](https://docs.astral.sh/ruff/rules/int-on-sliced-str) (`FURB166`)
+- [`exc-info-outside-except-handler`](https://docs.astral.sh/ruff/rules/exc-info-outside-except-handler) (`LOG014`)
+- [`import-outside-top-level`](https://docs.astral.sh/ruff/rules/import-outside-top-level) (`PLC0415`)
+- [`unnecessary-dict-index-lookup`](https://docs.astral.sh/ruff/rules/unnecessary-dict-index-lookup) (`PLR1733`)
+- [`nan-comparison`](https://docs.astral.sh/ruff/rules/nan-comparison) (`PLW0177`)
+- [`eq-without-hash`](https://docs.astral.sh/ruff/rules/eq-without-hash) (`PLW1641`)
+- [`pytest-parameter-with-default-argument`](https://docs.astral.sh/ruff/rules/pytest-parameter-with-default-argument) (`PT028`)
+- [`pytest-warns-too-broad`](https://docs.astral.sh/ruff/rules/pytest-warns-too-broad) (`PT030`)
+- [`pytest-warns-with-multiple-statements`](https://docs.astral.sh/ruff/rules/pytest-warns-with-multiple-statements) (`PT031`)
+- [`invalid-formatter-suppression-comment`](https://docs.astral.sh/ruff/rules/invalid-formatter-suppression-comment) (`RUF028`)
+- [`dataclass-enum`](https://docs.astral.sh/ruff/rules/dataclass-enum) (`RUF049`)
+- [`class-with-mixed-type-vars`](https://docs.astral.sh/ruff/rules/class-with-mixed-type-vars) (`RUF053`)
+- [`unnecessary-round`](https://docs.astral.sh/ruff/rules/unnecessary-round) (`RUF057`)
+- [`starmap-zip`](https://docs.astral.sh/ruff/rules/starmap-zip) (`RUF058`)
+- [`non-pep604-annotation-optional`] (`UP045`)
+- [`non-pep695-generic-class`](https://docs.astral.sh/ruff/rules/non-pep695-generic-class) (`UP046`)
+- [`non-pep695-generic-function`](https://docs.astral.sh/ruff/rules/non-pep695-generic-function) (`UP047`)
+- [`private-type-parameter`](https://docs.astral.sh/ruff/rules/private-type-parameter) (`UP049`)
+
+The following behaviors have been stabilized:
+
+- [`collection-literal-concatenation`] (`RUF005`) now recognizes slices, in
+    addition to list literals and variables.
+- The fix for [`readlines-in-for`] (`FURB129`) is now marked as always safe.
+- [`if-else-block-instead-of-if-exp`] (`SIM108`) will now further simplify
+    expressions to use `or` instead of an `if` expression, where possible.
+- [`unused-noqa`] (`RUF100`) now checks for file-level `noqa` comments as well
+    as inline comments.
+- [`subprocess-without-shell-equals-true`] (`S603`) now accepts literal strings,
+    as well as lists and tuples of literal strings, as trusted input.
+- [`boolean-type-hint-positional-argument`] (`FBT001`) now applies to types that
+    include `bool`, like `bool | int` or `typing.Optional[bool]`, in addition to
+    plain `bool` annotations.
+- [`non-pep604-annotation-union`] (`UP007`) has now been split into two rules.
+    `UP007` now applies only to `typing.Union`, while
+    [`non-pep604-annotation-optional`] (`UP045`) checks for use of
+    `typing.Optional`. `UP045` has also been stabilized in this release, but you
+    may need to update existing `include`, `ignore`, or `noqa` settings to
+    accommodate this change.
+
+### Preview features
+
+- \[`ruff`\] Check for non-context-manager use of `pytest.raises`, `pytest.warns`, and `pytest.deprecated_call` (`RUF061`) ([#17368](https://github.com/astral-sh/ruff/pull/17368))
+- [syntax-errors] Raise unsupported syntax error for template strings prior to Python 3.14 ([#18664](https://github.com/astral-sh/ruff/pull/18664))
+
+### Bug fixes
+
+- Add syntax error when conversion flag does not immediately follow exclamation mark ([#18706](https://github.com/astral-sh/ruff/pull/18706))
+- Add trailing space around `readlines` ([#18542](https://github.com/astral-sh/ruff/pull/18542))
+- Fix `\r` and `\r\n` handling in t- and f-string debug texts ([#18673](https://github.com/astral-sh/ruff/pull/18673))
+- Hug closing `}` when f-string expression has a format specifier ([#18704](https://github.com/astral-sh/ruff/pull/18704))
+- \[`flake8-pyi`\] Avoid syntax error in the case of starred and keyword arguments (`PYI059`) ([#18611](https://github.com/astral-sh/ruff/pull/18611))
+- \[`flake8-return`\] Fix `RET504` autofix generating a syntax error ([#18428](https://github.com/astral-sh/ruff/pull/18428))
+- \[`pep8-naming`\] Suppress fix for `N804` and `N805` if the recommended name is already used ([#18472](https://github.com/astral-sh/ruff/pull/18472))
+- \[`pycodestyle`\] Avoid causing a syntax error in expressions spanning multiple lines (`E731`) ([#18479](https://github.com/astral-sh/ruff/pull/18479))
+- \[`pyupgrade`\] Suppress `UP008` if `super` is shadowed ([#18688](https://github.com/astral-sh/ruff/pull/18688))
+- \[`refurb`\] Parenthesize lambda and ternary expressions (`FURB122`, `FURB142`) ([#18592](https://github.com/astral-sh/ruff/pull/18592))
+- \[`ruff`\] Handle extra arguments to `deque` (`RUF037`) ([#18614](https://github.com/astral-sh/ruff/pull/18614))
+- \[`ruff`\] Preserve parentheses around `deque` in fix for `unnecessary-empty-iterable-within-deque-call` (`RUF037`) ([#18598](https://github.com/astral-sh/ruff/pull/18598))
+- \[`ruff`\] Validate arguments before offering a fix (`RUF056`) ([#18631](https://github.com/astral-sh/ruff/pull/18631))
+- \[`ruff`\] Skip fix for `RUF059` if dummy name is already bound ([#18509](https://github.com/astral-sh/ruff/pull/18509))
+- \[`pylint`\] Fix `PLW0128` to check assignment targets in square brackets and after asterisks ([#18665](https://github.com/astral-sh/ruff/pull/18665))
+
+### Rule changes
+
+- Fix false positive on mutations in `return` statements (`B909`) ([#18408](https://github.com/astral-sh/ruff/pull/18408))
+- Treat `ty:` comments as pragma comments ([#18532](https://github.com/astral-sh/ruff/pull/18532))
+- \[`flake8-pyi`\] Apply `custom-typevar-for-self` to string annotations (`PYI019`) ([#18311](https://github.com/astral-sh/ruff/pull/18311))
+- \[`pyupgrade`\] Don't offer a fix for `Optional[None]` (`UP007`, `UP045)` ([#18545](https://github.com/astral-sh/ruff/pull/18545))
+- \[`pyupgrade`\] Fix `super(__class__, self)` detection (`UP008`) ([#18478](https://github.com/astral-sh/ruff/pull/18478))
+- \[`refurb`\] Make the fix for `FURB163` unsafe for `log2`, `log10`, `*args`, and deleted comments ([#18645](https://github.com/astral-sh/ruff/pull/18645))
+
+### Server
+
+- Support cancellation requests ([#18627](https://github.com/astral-sh/ruff/pull/18627))
+
+### Documentation
+
+- Drop confusing second `*` from glob pattern example for `per-file-target-version` ([#18709](https://github.com/astral-sh/ruff/pull/18709))
+- Update Neovim configuration examples ([#18491](https://github.com/astral-sh/ruff/pull/18491))
+- \[`pylint`\] De-emphasize `__hash__ = Parent.__hash__` (`PLW1641`) ([#18613](https://github.com/astral-sh/ruff/pull/18613))
+- \[`refurb`\] Add a note about float literal handling (`FURB157`) ([#18615](https://github.com/astral-sh/ruff/pull/18615))
+
+## 0.12.1
+
+### Preview features
+
+- \[`flake8-errmsg`\] Extend `EM101` to support byte strings ([#18867](https://github.com/astral-sh/ruff/pull/18867))
+- \[`flake8-use-pathlib`\] Add autofix for `PTH202` ([#18763](https://github.com/astral-sh/ruff/pull/18763))
+- \[`pygrep-hooks`\] Add `AsyncMock` methods to `invalid-mock-access` (`PGH005`) ([#18547](https://github.com/astral-sh/ruff/pull/18547))
+- \[`pylint`\] Ignore `__init__.py` files in (`PLC0414`) ([#18400](https://github.com/astral-sh/ruff/pull/18400))
+- \[`ruff`\] Trigger `RUF037` for empty string and byte strings ([#18862](https://github.com/astral-sh/ruff/pull/18862))
+- [formatter] Fix missing blank lines before decorated classes in `.pyi` files ([#18888](https://github.com/astral-sh/ruff/pull/18888))
+
+### Bug fixes
+
+- Avoid generating diagnostics with per-file ignores ([#18801](https://github.com/astral-sh/ruff/pull/18801))
+- Handle parenthesized arguments in `remove_argument` ([#18805](https://github.com/astral-sh/ruff/pull/18805))
+- \[`flake8-logging`\] Avoid false positive for `exc_info=True` outside `logger.exception` (`LOG014`) ([#18737](https://github.com/astral-sh/ruff/pull/18737))
+- \[`flake8-pytest-style`\] Enforce `pytest` import for decorators ([#18779](https://github.com/astral-sh/ruff/pull/18779))
+- \[`flake8-pytest-style`\] Mark autofix for `PT001` and `PT023` as unsafe if there's comments in the decorator ([#18792](https://github.com/astral-sh/ruff/pull/18792))
+- \[`flake8-pytest-style`\] `PT001`/`PT023` fix makes syntax error on parenthesized decorator ([#18782](https://github.com/astral-sh/ruff/pull/18782))
+- \[`flake8-raise`\] Make fix unsafe if it deletes comments (`RSE102`) ([#18788](https://github.com/astral-sh/ruff/pull/18788))
+- \[`flake8-simplify`\] Fix `SIM911` autofix creating a syntax error ([#18793](https://github.com/astral-sh/ruff/pull/18793))
+- \[`flake8-simplify`\] Fix false negatives for shadowed bindings (`SIM910`, `SIM911`) ([#18794](https://github.com/astral-sh/ruff/pull/18794))
+- \[`flake8-simplify`\] Preserve original behavior for `except ()` and bare `except` (`SIM105`) ([#18213](https://github.com/astral-sh/ruff/pull/18213))
+- \[`flake8-pyi`\] Fix `PYI041`'s fix causing `TypeError` with `None | None | ...` ([#18637](https://github.com/astral-sh/ruff/pull/18637))
+- \[`perflint`\] Fix `PERF101` autofix creating a syntax error and mark autofix as unsafe if there are comments in the `list` call expr ([#18803](https://github.com/astral-sh/ruff/pull/18803))
+- \[`perflint`\] Fix false negative in `PERF401` ([#18866](https://github.com/astral-sh/ruff/pull/18866))
+- \[`pylint`\] Avoid flattening nested `min`/`max` when outer call has single argument (`PLW3301`) ([#16885](https://github.com/astral-sh/ruff/pull/16885))
+- \[`pylint`\] Fix `PLC2801` autofix creating a syntax error ([#18857](https://github.com/astral-sh/ruff/pull/18857))
+- \[`pylint`\] Mark `PLE0241` autofix as unsafe if there's comments in the base classes ([#18832](https://github.com/astral-sh/ruff/pull/18832))
+- \[`pylint`\] Suppress `PLE2510`/`PLE2512`/`PLE2513`/`PLE2514`/`PLE2515` autofix if the text contains an odd number of backslashes ([#18856](https://github.com/astral-sh/ruff/pull/18856))
+- \[`refurb`\] Detect more exotic float literals in `FURB164` ([#18925](https://github.com/astral-sh/ruff/pull/18925))
+- \[`refurb`\] Fix `FURB163` autofix creating a syntax error for `yield` expressions ([#18756](https://github.com/astral-sh/ruff/pull/18756))
+- \[`refurb`\] Mark `FURB129` autofix as unsafe if there's comments in the `readlines` call ([#18858](https://github.com/astral-sh/ruff/pull/18858))
+- \[`ruff`\] Fix false positives and negatives in `RUF010` ([#18690](https://github.com/astral-sh/ruff/pull/18690))
+- Fix casing of `analyze.direction` variant names ([#18892](https://github.com/astral-sh/ruff/pull/18892))
+
+### Rule changes
+
+- Fix f-string interpolation escaping in generated fixes ([#18882](https://github.com/astral-sh/ruff/pull/18882))
+- \[`flake8-return`\] Mark `RET501` fix unsafe if comments are inside ([#18780](https://github.com/astral-sh/ruff/pull/18780))
+- \[`flake8-async`\] Fix detection for large integer sleep durations in `ASYNC116` rule ([#18767](https://github.com/astral-sh/ruff/pull/18767))
+- \[`flake8-async`\] Mark autofix for `ASYNC115` as unsafe if the call expression contains comments ([#18753](https://github.com/astral-sh/ruff/pull/18753))
+- \[`flake8-bugbear`\] Mark autofix for `B004` as unsafe if the `hasattr` call expr contains comments ([#18755](https://github.com/astral-sh/ruff/pull/18755))
+- \[`flake8-comprehension`\] Mark autofix for `C420` as unsafe if there's comments inside the dict comprehension ([#18768](https://github.com/astral-sh/ruff/pull/18768))
+- \[`flake8-comprehensions`\] Handle template strings for comprehension fixes ([#18710](https://github.com/astral-sh/ruff/pull/18710))
+- \[`flake8-future-annotations`\] Add autofix (`FA100`) ([#18903](https://github.com/astral-sh/ruff/pull/18903))
+- \[`pyflakes`\] Mark `F504`/`F522`/`F523` autofix as unsafe if there's a call with side effect ([#18839](https://github.com/astral-sh/ruff/pull/18839))
+- \[`pylint`\] Allow fix with comments and document performance implications (`PLW3301`) ([#18936](https://github.com/astral-sh/ruff/pull/18936))
+- \[`pylint`\] Detect more exotic `NaN` literals in `PLW0177` ([#18630](https://github.com/astral-sh/ruff/pull/18630))
+- \[`pylint`\] Fix `PLC1802` autofix creating a syntax error and mark autofix as unsafe if there's comments in the `len` call ([#18836](https://github.com/astral-sh/ruff/pull/18836))
+- \[`pyupgrade`\] Extend version detection to include `sys.version_info.major` (`UP036`) ([#18633](https://github.com/astral-sh/ruff/pull/18633))
+- \[`ruff`\] Add lint rule `RUF064` for calling `chmod` with non-octal integers ([#18541](https://github.com/astral-sh/ruff/pull/18541))
+- \[`ruff`\] Added `cls.__dict__.get('__annotations__')` check (`RUF063`) ([#18233](https://github.com/astral-sh/ruff/pull/18233))
+- \[`ruff`\] Frozen `dataclass` default should be valid (`RUF009`) ([#18735](https://github.com/astral-sh/ruff/pull/18735))
+
+### Server
+
+- Consider virtual path for various server actions ([#18910](https://github.com/astral-sh/ruff/pull/18910))
+
+### Documentation
+
+- Add fix safety sections ([#18940](https://github.com/astral-sh/ruff/pull/18940),[#18841](https://github.com/astral-sh/ruff/pull/18841),[#18802](https://github.com/astral-sh/ruff/pull/18802),[#18837](https://github.com/astral-sh/ruff/pull/18837),[#18800](https://github.com/astral-sh/ruff/pull/18800),[#18415](https://github.com/astral-sh/ruff/pull/18415),[#18853](https://github.com/astral-sh/ruff/pull/18853),[#18842](https://github.com/astral-sh/ruff/pull/18842))
+- Use updated pre-commit id ([#18718](https://github.com/astral-sh/ruff/pull/18718))
+- \[`perflint`\] Small docs improvement to `PERF401` ([#18786](https://github.com/astral-sh/ruff/pull/18786))
+- \[`pyupgrade`\]: Use `super()`, not `__super__` in error messages (`UP008`) ([#18743](https://github.com/astral-sh/ruff/pull/18743))
+- \[`flake8-pie`\] Small docs fix to `PIE794` ([#18829](https://github.com/astral-sh/ruff/pull/18829))
+- \[`flake8-pyi`\] Correct `collections-named-tuple` example to use PascalCase assignment ([#16884](https://github.com/astral-sh/ruff/pull/16884))
+- \[`flake8-pie`\] Add note on type checking benefits to `unnecessary-dict-kwargs` (`PIE804`) ([#18666](https://github.com/astral-sh/ruff/pull/18666))
+- \[`pycodestyle`\] Clarify PEP 8 relationship to `whitespace-around-operator` rules ([#18870](https://github.com/astral-sh/ruff/pull/18870))
+
+### Other changes
+
+- Disallow newlines in format specifiers of single quoted f- or t-strings ([#18708](https://github.com/astral-sh/ruff/pull/18708))
+- \[`flake8-logging`\] Add fix safety section to `LOG002` ([#18840](https://github.com/astral-sh/ruff/pull/18840))
+- \[`pyupgrade`\] Add fix safety section to `UP010` ([#18838](https://github.com/astral-sh/ruff/pull/18838))
+
+## 0.12.2
+
+### Preview features
+
+- \[`flake8-pyi`\] Expand `Optional[A]` to `A | None` (`PYI016`) ([#18572](https://github.com/astral-sh/ruff/pull/18572))
+- \[`pyupgrade`\] Mark `UP008` fix safe if no comments are in range ([#18683](https://github.com/astral-sh/ruff/pull/18683))
+
+### Bug fixes
+
+- \[`flake8-comprehensions`\] Fix `C420` to prepend whitespace when needed ([#18616](https://github.com/astral-sh/ruff/pull/18616))
+- \[`perflint`\] Fix `PERF403` panic on attribute or subscription loop variable ([#19042](https://github.com/astral-sh/ruff/pull/19042))
+- \[`pydocstyle`\] Fix `D413` infinite loop for parenthesized docstring ([#18930](https://github.com/astral-sh/ruff/pull/18930))
+- \[`pylint`\] Fix `PLW0108` autofix introducing a syntax error when the lambda's body contains an assignment expression ([#18678](https://github.com/astral-sh/ruff/pull/18678))
+- \[`refurb`\] Fix false positive on empty tuples (`FURB168`) ([#19058](https://github.com/astral-sh/ruff/pull/19058))
+- \[`ruff`\] Allow more `field` calls from `attrs` (`RUF009`) ([#19021](https://github.com/astral-sh/ruff/pull/19021))
+- \[`ruff`\] Fix syntax error introduced for an empty string followed by a u-prefixed string (`UP025`) ([#18899](https://github.com/astral-sh/ruff/pull/18899))
+
+### Rule changes
+
+- \[`flake8-executable`\] Allow `uvx` in shebang line (`EXE003`) ([#18967](https://github.com/astral-sh/ruff/pull/18967))
+- \[`pandas`\] Avoid flagging `PD002` if `pandas` is not imported ([#18963](https://github.com/astral-sh/ruff/pull/18963))
+- \[`pyupgrade`\] Avoid PEP-604 unions with `typing.NamedTuple` (`UP007`, `UP045`) ([#18682](https://github.com/astral-sh/ruff/pull/18682))
+
+### Documentation
+
+- Document link between `import-outside-top-level (PLC0415)` and `lint.flake8-tidy-imports.banned-module-level-imports` ([#18733](https://github.com/astral-sh/ruff/pull/18733))
+- Fix description of the `format.skip-magic-trailing-comma` example ([#19095](https://github.com/astral-sh/ruff/pull/19095))
+- \[`airflow`\] Make `AIR302` example error out-of-the-box ([#18988](https://github.com/astral-sh/ruff/pull/18988))
+- \[`airflow`\] Make `AIR312` example error out-of-the-box ([#18989](https://github.com/astral-sh/ruff/pull/18989))
+- \[`flake8-annotations`\] Make `ANN401` example error out-of-the-box ([#18974](https://github.com/astral-sh/ruff/pull/18974))
+- \[`flake8-async`\] Make `ASYNC100` example error out-of-the-box ([#18993](https://github.com/astral-sh/ruff/pull/18993))
+- \[`flake8-async`\] Make `ASYNC105` example error out-of-the-box ([#19002](https://github.com/astral-sh/ruff/pull/19002))
+- \[`flake8-async`\] Make `ASYNC110` example error out-of-the-box ([#18975](https://github.com/astral-sh/ruff/pull/18975))
+- \[`flake8-async`\] Make `ASYNC210` example error out-of-the-box ([#18977](https://github.com/astral-sh/ruff/pull/18977))
+- \[`flake8-async`\] Make `ASYNC220`, `ASYNC221`, and `ASYNC222` examples error out-of-the-box ([#18978](https://github.com/astral-sh/ruff/pull/18978))
+- \[`flake8-async`\] Make `ASYNC251` example error out-of-the-box ([#18990](https://github.com/astral-sh/ruff/pull/18990))
+- \[`flake8-bandit`\] Make `S201` example error out-of-the-box ([#19017](https://github.com/astral-sh/ruff/pull/19017))
+- \[`flake8-bandit`\] Make `S604` and `S609` examples error out-of-the-box ([#19049](https://github.com/astral-sh/ruff/pull/19049))
+- \[`flake8-bugbear`\] Make `B028` example error out-of-the-box ([#19054](https://github.com/astral-sh/ruff/pull/19054))
+- \[`flake8-bugbear`\] Make `B911` example error out-of-the-box ([#19051](https://github.com/astral-sh/ruff/pull/19051))
+- \[`flake8-datetimez`\] Make `DTZ011` example error out-of-the-box ([#19055](https://github.com/astral-sh/ruff/pull/19055))
+- \[`flake8-datetimez`\] Make `DTZ901` example error out-of-the-box ([#19056](https://github.com/astral-sh/ruff/pull/19056))
+- \[`flake8-pyi`\] Make `PYI032` example error out-of-the-box ([#19061](https://github.com/astral-sh/ruff/pull/19061))
+- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI014`, `PYI015`) ([#19097](https://github.com/astral-sh/ruff/pull/19097))
+- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI042`) ([#19101](https://github.com/astral-sh/ruff/pull/19101))
+- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI059`) ([#19080](https://github.com/astral-sh/ruff/pull/19080))
+- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI062`) ([#19079](https://github.com/astral-sh/ruff/pull/19079))
+- \[`flake8-pytest-style`\] Make example error out-of-the-box (`PT023`) ([#19104](https://github.com/astral-sh/ruff/pull/19104))
+- \[`flake8-pytest-style`\] Make example error out-of-the-box (`PT030`) ([#19105](https://github.com/astral-sh/ruff/pull/19105))
+- \[`flake8-quotes`\] Make example error out-of-the-box (`Q003`) ([#19106](https://github.com/astral-sh/ruff/pull/19106))
+- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM110`) ([#19113](https://github.com/astral-sh/ruff/pull/19113))
+- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM113`) ([#19109](https://github.com/astral-sh/ruff/pull/19109))
+- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM401`) ([#19110](https://github.com/astral-sh/ruff/pull/19110))
+- \[`pyflakes`\] Fix backslash in docs (`F621`) ([#19098](https://github.com/astral-sh/ruff/pull/19098))
+- \[`pylint`\] Fix `PLC0415` example ([#18970](https://github.com/astral-sh/ruff/pull/18970))
+
+## 0.12.3
+
+### Preview features
+
+- \[`flake8-bugbear`\] Support non-context-manager calls in `B017` ([#19063](https://github.com/astral-sh/ruff/pull/19063))
+- \[`flake8-use-pathlib`\] Add autofixes for `PTH100`, `PTH106`, `PTH107`, `PTH108`, `PTH110`, `PTH111`, `PTH112`, `PTH113`, `PTH114`, `PTH115`, `PTH117`, `PTH119`, `PTH120` ([#19213](https://github.com/astral-sh/ruff/pull/19213))
+- \[`flake8-use-pathlib`\] Add autofixes for `PTH203`, `PTH204`, `PTH205` ([#18922](https://github.com/astral-sh/ruff/pull/18922))
+
+### Bug fixes
+
+- \[`flake8-return`\] Fix false-positive for variables used inside nested functions in `RET504` ([#18433](https://github.com/astral-sh/ruff/pull/18433))
+- Treat form feed as valid whitespace before a line continuation ([#19220](https://github.com/astral-sh/ruff/pull/19220))
+- \[`flake8-type-checking`\] Fix syntax error introduced by fix (`TC008`) ([#19150](https://github.com/astral-sh/ruff/pull/19150))
+- \[`pyupgrade`\] Keyword arguments in `super` should suppress the `UP008` fix ([#19131](https://github.com/astral-sh/ruff/pull/19131))
+
+### Documentation
+
+- \[`flake8-pyi`\] Make example error out-of-the-box (`PYI007`, `PYI008`) ([#19103](https://github.com/astral-sh/ruff/pull/19103))
+- \[`flake8-simplify`\] Make example error out-of-the-box (`SIM116`) ([#19111](https://github.com/astral-sh/ruff/pull/19111))
+- \[`flake8-type-checking`\] Make example error out-of-the-box (`TC001`) ([#19151](https://github.com/astral-sh/ruff/pull/19151))
+- \[`flake8-use-pathlib`\] Make example error out-of-the-box (`PTH210`) ([#19189](https://github.com/astral-sh/ruff/pull/19189))
+- \[`pycodestyle`\] Make example error out-of-the-box (`E272`) ([#19191](https://github.com/astral-sh/ruff/pull/19191))
+- \[`pycodestyle`\] Make example not raise unnecessary `SyntaxError` (`E114`) ([#19190](https://github.com/astral-sh/ruff/pull/19190))
+- \[`pydoclint`\] Make example error out-of-the-box (`DOC501`) ([#19218](https://github.com/astral-sh/ruff/pull/19218))
+- \[`pylint`, `pyupgrade`\] Fix syntax errors in examples (`PLW1501`, `UP028`) ([#19127](https://github.com/astral-sh/ruff/pull/19127))
+- \[`pylint`\] Update `missing-maxsplit-arg` docs and error to suggest proper usage (`PLC0207`) ([#18949](https://github.com/astral-sh/ruff/pull/18949))
+- \[`flake8-bandit`\] Make example error out-of-the-box (`S412`) ([#19241](https://github.com/astral-sh/ruff/pull/19241))
+
+## 0.12.4
+
+### Preview features
+
+- \[`flake8-type-checking`, `pyupgrade`, `ruff`\] Add `from __future__ import annotations` when it would allow new fixes (`TC001`, `TC002`, `TC003`, `UP037`, `RUF013`) ([#19100](https://github.com/astral-sh/ruff/pull/19100))
+- \[`flake8-use-pathlib`\] Add autofix for `PTH109` ([#19245](https://github.com/astral-sh/ruff/pull/19245))
+- \[`pylint`\] Detect indirect `pathlib.Path` usages for `unspecified-encoding` (`PLW1514`) ([#19304](https://github.com/astral-sh/ruff/pull/19304))
+
+### Bug fixes
+
+- \[`flake8-bugbear`\] Fix `B017` false negatives for keyword exception arguments ([#19217](https://github.com/astral-sh/ruff/pull/19217))
+- \[`flake8-use-pathlib`\] Fix false negative on direct `Path()` instantiation (`PTH210`) ([#19388](https://github.com/astral-sh/ruff/pull/19388))
+- \[`flake8-django`\] Fix `DJ008` false positive for abstract models with type-annotated `abstract` field ([#19221](https://github.com/astral-sh/ruff/pull/19221))
+- \[`isort`\] Fix `I002` import insertion after docstring with multiple string statements ([#19222](https://github.com/astral-sh/ruff/pull/19222))
+- \[`isort`\] Treat form feed as valid whitespace before a semicolon ([#19343](https://github.com/astral-sh/ruff/pull/19343))
+- \[`pydoclint`\] Fix `SyntaxError` from fixes with line continuations (`D201`, `D202`) ([#19246](https://github.com/astral-sh/ruff/pull/19246))
+- \[`refurb`\] `FURB164` fix should validate arguments and should usually be marked unsafe ([#19136](https://github.com/astral-sh/ruff/pull/19136))
+
+### Rule changes
+
+- \[`flake8-use-pathlib`\] Skip single dots for `invalid-pathlib-with-suffix` (`PTH210`) on versions >= 3.14 ([#19331](https://github.com/astral-sh/ruff/pull/19331))
+- \[`pep8_naming`\] Avoid false positives on standard library functions with uppercase names (`N802`) ([#18907](https://github.com/astral-sh/ruff/pull/18907))
+- \[`pycodestyle`\] Handle brace escapes for t-strings in logical lines ([#19358](https://github.com/astral-sh/ruff/pull/19358))
+- \[`pylint`\] Extend invalid string character rules to include t-strings ([#19355](https://github.com/astral-sh/ruff/pull/19355))
+- \[`ruff`\] Allow `strict` kwarg when checking for `starmap-zip` (`RUF058`) in Python 3.14+ ([#19333](https://github.com/astral-sh/ruff/pull/19333))
+
+### Documentation
+
+- \[`flake8-type-checking`\] Make `TC010` docs example more realistic ([#19356](https://github.com/astral-sh/ruff/pull/19356))
+- Make more documentation examples error out-of-the-box ([#19288](https://github.com/astral-sh/ruff/pull/19288),[#19272](https://github.com/astral-sh/ruff/pull/19272),[#19291](https://github.com/astral-sh/ruff/pull/19291),[#19296](https://github.com/astral-sh/ruff/pull/19296),[#19292](https://github.com/astral-sh/ruff/pull/19292),[#19295](https://github.com/astral-sh/ruff/pull/19295),[#19297](https://github.com/astral-sh/ruff/pull/19297),[#19309](https://github.com/astral-sh/ruff/pull/19309))
+
+## 0.12.5
+
+### Preview features
+
+- \[`flake8-use-pathlib`\] Add autofix for `PTH101`, `PTH104`, `PTH105`, `PTH121` ([#19404](https://github.com/astral-sh/ruff/pull/19404))
+- \[`ruff`\] Support byte strings (`RUF055`) ([#18926](https://github.com/astral-sh/ruff/pull/18926))
+
+### Bug fixes
+
+- Fix `unreachable` panic in parser ([#19183](https://github.com/astral-sh/ruff/pull/19183))
+- \[`flake8-pyi`\] Skip fix if all `Union` members are `None` (`PYI016`) ([#19416](https://github.com/astral-sh/ruff/pull/19416))
+- \[`perflint`\] Parenthesize generator expressions (`PERF401`) ([#19325](https://github.com/astral-sh/ruff/pull/19325))
+- \[`pylint`\] Handle empty comments after line continuation (`PLR2044`) ([#19405](https://github.com/astral-sh/ruff/pull/19405))
+
+### Rule changes
+
+- \[`pep8-naming`\] Fix `N802` false positives for `CGIHTTPRequestHandler` and `SimpleHTTPRequestHandler` ([#19432](https://github.com/astral-sh/ruff/pull/19432))
+
+## 0.12.6
+
+### Preview features
+
+- \[`flake8-commas`\] Add support for trailing comma checks in type parameter lists (`COM812`, `COM819`) ([#19390](https://github.com/astral-sh/ruff/pull/19390))
+- \[`pylint`\] Implement auto-fix for `missing-maxsplit-arg` (`PLC0207`) ([#19387](https://github.com/astral-sh/ruff/pull/19387))
+- \[`ruff`\] Offer fixes for `RUF039` in more cases ([#19065](https://github.com/astral-sh/ruff/pull/19065))
+
+### Bug fixes
+
+- Support `.pyi` files in ruff analyze graph ([#19611](https://github.com/astral-sh/ruff/pull/19611))
+- \[`flake8-pyi`\] Preserve inline comment in ellipsis removal (`PYI013`) ([#19399](https://github.com/astral-sh/ruff/pull/19399))
+- \[`perflint`\] Ignore rule if target is `global` or `nonlocal` (`PERF401`) ([#19539](https://github.com/astral-sh/ruff/pull/19539))
+- \[`pyupgrade`\] Fix `UP030` to avoid modifying double curly braces in format strings ([#19378](https://github.com/astral-sh/ruff/pull/19378))
+- \[`refurb`\] Ignore decorated functions for `FURB118` ([#19339](https://github.com/astral-sh/ruff/pull/19339))
+- \[`refurb`\] Mark `int` and `bool` cases for `Decimal.from_float` as safe fixes (`FURB164`) ([#19468](https://github.com/astral-sh/ruff/pull/19468))
+- \[`ruff`\] Fix `RUF033` for named default expressions ([#19115](https://github.com/astral-sh/ruff/pull/19115))
+
+### Rule changes
+
+- \[`flake8-blind-except`\] Change `BLE001` to permit `logging.critical(..., exc_info=True)` ([#19520](https://github.com/astral-sh/ruff/pull/19520))
+
+### Performance
+
+- Add support for specifying minimum dots in detected string imports ([#19538](https://github.com/astral-sh/ruff/pull/19538))
+
+## 0.12.7
+
+This is a follow-up release to 0.12.6. Because of an issue in the package metadata, 0.12.6 failed to publish fully to PyPI and has been yanked. Similarly, there is no GitHub release or Git tag for 0.12.6. The contents of the 0.12.7 release are identical to 0.12.6, except for the updated metadata.
+
+## 0.12.8
+
+### Preview features
+
+- \[`flake8-use-pathlib`\] Expand `PTH201` to check all `PurePath` subclasses ([#19440](https://github.com/astral-sh/ruff/pull/19440))
+
+### Bug fixes
+
+- \[`flake8-blind-except`\] Change `BLE001` to correctly parse exception tuples ([#19747](https://github.com/astral-sh/ruff/pull/19747))
+- \[`flake8-errmsg`\] Exclude `typing.cast` from `EM101` ([#19656](https://github.com/astral-sh/ruff/pull/19656))
+- \[`flake8-simplify`\] Fix raw string handling in `SIM905` for embedded quotes ([#19591](https://github.com/astral-sh/ruff/pull/19591))
+- \[`flake8-import-conventions`\] Avoid false positives for NFKC-normalized `__debug__` import aliases in `ICN001` ([#19411](https://github.com/astral-sh/ruff/pull/19411))
+- \[`isort`\] Fix syntax error after docstring ending with backslash (`I002`) ([#19505](https://github.com/astral-sh/ruff/pull/19505))
+- \[`pylint`\] Mark `PLC0207` fixes as unsafe when `*args` unpacking is present ([#19679](https://github.com/astral-sh/ruff/pull/19679))
+- \[`pyupgrade`\] Prevent infinite loop with `I002` (`UP010`, `UP035`) ([#19413](https://github.com/astral-sh/ruff/pull/19413))
+- \[`ruff`\] Parenthesize generator expressions in f-strings (`RUF010`) ([#19434](https://github.com/astral-sh/ruff/pull/19434))
+
+### Rule changes
+
+- \[`eradicate`\] Don't flag `pyrefly` pragmas as unused code (`ERA001`) ([#19731](https://github.com/astral-sh/ruff/pull/19731))
+
+### Documentation
+
+- Replace "associative" with "commutative" in docs for `RUF036` ([#19706](https://github.com/astral-sh/ruff/pull/19706))
+- Fix copy and line separator colors in dark mode ([#19630](https://github.com/astral-sh/ruff/pull/19630))
+- Fix link to `typing` documentation ([#19648](https://github.com/astral-sh/ruff/pull/19648))
+- \[`refurb`\] Make more examples error out-of-the-box ([#19695](https://github.com/astral-sh/ruff/pull/19695),[#19673](https://github.com/astral-sh/ruff/pull/19673),[#19672](https://github.com/astral-sh/ruff/pull/19672))
+
+### Other changes
+
+- Include column numbers in GitLab output format ([#19708](https://github.com/astral-sh/ruff/pull/19708))
+- Always expand tabs to four spaces in diagnostics ([#19618](https://github.com/astral-sh/ruff/pull/19618))
+- Update pre-commit's `ruff` id ([#19654](https://github.com/astral-sh/ruff/pull/19654))
+
+## 0.12.9
+
+### Preview features
+
+- \[`airflow`\] Add check for `airflow.secrets.cache.SecretCache` (`AIR301`) ([#17707](https://github.com/astral-sh/ruff/pull/17707))
+- \[`ruff`\] Offer a safe fix for multi-digit zeros (`RUF064`) ([#19847](https://github.com/astral-sh/ruff/pull/19847))
+
+### Bug fixes
+
+- \[`flake8-blind-except`\] Fix `BLE001` false-positive on `raise ... from None` ([#19755](https://github.com/astral-sh/ruff/pull/19755))
+- \[`flake8-comprehensions`\] Fix false positive for `C420` with attribute, subscript, or slice assignment targets ([#19513](https://github.com/astral-sh/ruff/pull/19513))
+- \[`flake8-simplify`\] Fix handling of U+001C..U+001F whitespace (`SIM905`) ([#19849](https://github.com/astral-sh/ruff/pull/19849))
+
+### Rule changes
+
+- \[`pylint`\] Use lowercase hex characters to match the formatter (`PLE2513`) ([#19808](https://github.com/astral-sh/ruff/pull/19808))
+
+### Documentation
+
+- Fix `lint.future-annotations` link ([#19876](https://github.com/astral-sh/ruff/pull/19876))
+
+### Other changes
+
+- Build `riscv64` binaries for release ([#19819](https://github.com/astral-sh/ruff/pull/19819))
+
+- Add rule code to error description in GitLab output ([#19896](https://github.com/astral-sh/ruff/pull/19896))
+
+- Improve rendering of the `full` output format ([#19415](https://github.com/astral-sh/ruff/pull/19415))
+
+    Below is an example diff for [`F401`](https://docs.astral.sh/ruff/rules/unused-import/):
+
+    ```diff
+    -unused.py:8:19: F401 [*] `pathlib` imported but unused
+    +F401 [*] `pathlib` imported but unused
+    +  --> unused.py:8:19
+        |
+      7 | # Unused, _not_ marked as required (due to the alias).
+      8 | import pathlib as non_alias
+    -   |                   ^^^^^^^^^ F401
+    +   |                   ^^^^^^^^^
+      9 |
+     10 | # Unused, marked as required.
+        |
+    -   = help: Remove unused import: `pathlib`
+    +help: Remove unused import: `pathlib`
+    ```
+
+    For now, the primary difference is the movement of the filename, line number, and column information to a second line in the header. This new representation will allow us to make further additions to Ruff's diagnostics, such as adding sub-diagnostics and multiple annotations to the same snippet.
+
+## 0.12.10
+
+### Preview features
+
+- \[`flake8-simplify`\] Implement fix for `maxsplit` without separator (`SIM905`) ([#19851](https://github.com/astral-sh/ruff/pull/19851))
+- \[`flake8-use-pathlib`\] Add fixes for `PTH102` and `PTH103` ([#19514](https://github.com/astral-sh/ruff/pull/19514))
+
+### Bug fixes
+
+- \[`isort`\] Handle multiple continuation lines after module docstring (`I002`) ([#19818](https://github.com/astral-sh/ruff/pull/19818))
+- \[`pyupgrade`\] Avoid reporting `__future__` features as unnecessary when they are used (`UP010`) ([#19769](https://github.com/astral-sh/ruff/pull/19769))
+- \[`pyupgrade`\] Handle nested `Optional`s (`UP045`) ([#19770](https://github.com/astral-sh/ruff/pull/19770))
+
+### Rule changes
+
+- \[`pycodestyle`\] Make `E731` fix unsafe instead of display-only for class assignments ([#19700](https://github.com/astral-sh/ruff/pull/19700))
+- \[`pyflakes`\] Add secondary annotation showing previous definition (`F811`) ([#19900](https://github.com/astral-sh/ruff/pull/19900))
+
+### Documentation
+
+- Fix description of global config file discovery strategy ([#19188](https://github.com/astral-sh/ruff/pull/19188))
+- Update outdated links to <https://typing.python.org/en/latest/source/stubs.html> ([#19992](https://github.com/astral-sh/ruff/pull/19992))
+- \[`flake8-annotations`\] Remove unused import in example (`ANN401`) ([#20000](https://github.com/astral-sh/ruff/pull/20000))
+
+## 0.12.11
+
+### Preview features
+
+- \[`airflow`\] Extend `AIR311` and `AIR312` rules ([#20082](https://github.com/astral-sh/ruff/pull/20082))
+- \[`airflow`\] Replace wrong path `airflow.io.storage` with `airflow.io.store` (`AIR311`) ([#20081](https://github.com/astral-sh/ruff/pull/20081))
+- \[`flake8-async`\] Implement `blocking-http-call-httpx-in-async-function` (`ASYNC212`) ([#20091](https://github.com/astral-sh/ruff/pull/20091))
+- \[`flake8-logging-format`\] Add auto-fix for f-string logging calls (`G004`) ([#19303](https://github.com/astral-sh/ruff/pull/19303))
+- \[`flake8-use-pathlib`\] Add autofix for `PTH211` ([#20009](https://github.com/astral-sh/ruff/pull/20009))
+- \[`flake8-use-pathlib`\] Make `PTH100` fix unsafe because it can change behavior ([#20100](https://github.com/astral-sh/ruff/pull/20100))
+
+### Bug fixes
+
+- \[`pyflakes`, `pylint`\] Fix false positives caused by `__class__` cell handling (`F841`, `PLE0117`) ([#20048](https://github.com/astral-sh/ruff/pull/20048))
+- \[`pyflakes`\] Fix `allowed-unused-imports` matching for top-level modules (`F401`) ([#20115](https://github.com/astral-sh/ruff/pull/20115))
+- \[`ruff`\] Fix false positive for t-strings in `default-factory-kwarg` (`RUF026`) ([#20032](https://github.com/astral-sh/ruff/pull/20032))
+- \[`ruff`\] Preserve relative whitespace in multi-line expressions (`RUF033`) ([#19647](https://github.com/astral-sh/ruff/pull/19647))
+
+### Rule changes
+
+- \[`ruff`\] Handle empty t-strings in `unnecessary-empty-iterable-within-deque-call` (`RUF037`) ([#20045](https://github.com/astral-sh/ruff/pull/20045))
+
+### Documentation
+
+- Fix incorrect `D413` links in docstrings convention FAQ ([#20089](https://github.com/astral-sh/ruff/pull/20089))
+- \[`flake8-use-pathlib`\] Update links to the table showing the correspondence between `os` and `pathlib` ([#20103](https://github.com/astral-sh/ruff/pull/20103))
+
+## 0.12.12
+
+### Preview features
+
+- Show fixes by default ([#19919](https://github.com/astral-sh/ruff/pull/19919))
+- \[`airflow`\] Convert `DatasetOrTimeSchedule(datasets=...)` to `AssetOrTimeSchedule(assets=...)` (`AIR311`) ([#20202](https://github.com/astral-sh/ruff/pull/20202))
+- \[`airflow`\] Improve the `AIR002` error message ([#20173](https://github.com/astral-sh/ruff/pull/20173))
+- \[`airflow`\] Move `airflow.operators.postgres_operator.Mapping` from `AIR302` to `AIR301` ([#20172](https://github.com/astral-sh/ruff/pull/20172))
+- \[`flake8-async`\] Implement `blocking-input` rule (`ASYNC250`) ([#20122](https://github.com/astral-sh/ruff/pull/20122))
+- \[`flake8-use-pathlib`\] Make `PTH119` and `PTH120` fixes unsafe because they can change behavior ([#20118](https://github.com/astral-sh/ruff/pull/20118))
+- \[`pylint`\] Add U+061C to `PLE2502` ([#20106](https://github.com/astral-sh/ruff/pull/20106))
+- \[`ruff`\] Fix false negative for empty f-strings in `deque` calls (`RUF037`) ([#20109](https://github.com/astral-sh/ruff/pull/20109))
+
+### Bug fixes
+
+- Less confidently mark f-strings as empty when inferring truthiness ([#20152](https://github.com/astral-sh/ruff/pull/20152))
+- \[`fastapi`\] Fix false positive for paths with spaces around parameters (`FAST003`) ([#20077](https://github.com/astral-sh/ruff/pull/20077))
+- \[`flake8-comprehensions`\] Skip `C417` when lambda contains `yield`/`yield from` ([#20201](https://github.com/astral-sh/ruff/pull/20201))
+- \[`perflint`\] Handle tuples in dictionary comprehensions (`PERF403`) ([#19934](https://github.com/astral-sh/ruff/pull/19934))
+
+### Rule changes
+
+- \[`pycodestyle`\] Preserve return type annotation for `ParamSpec` (`E731`) ([#20108](https://github.com/astral-sh/ruff/pull/20108))
+
+### Documentation
+
+- Add fix safety sections to docs ([#17490](https://github.com/astral-sh/ruff/pull/17490),[#17499](https://github.com/astral-sh/ruff/pull/17499))
+
+[`boolean-type-hint-positional-argument`]: https://docs.astral.sh/ruff/rules/boolean-type-hint-positional-argument
+[`collection-literal-concatenation`]: https://docs.astral.sh/ruff/rules/collection-literal-concatenation
+[`if-else-block-instead-of-if-exp`]: https://docs.astral.sh/ruff/rules/if-else-block-instead-of-if-exp
+[`non-pep604-annotation-optional`]: https://docs.astral.sh/ruff/rules/non-pep604-annotation-optional
+[`non-pep604-annotation-union`]: https://docs.astral.sh/ruff/rules/non-pep604-annotation-union
+[`readlines-in-for`]: https://docs.astral.sh/ruff/rules/readlines-in-for
+[`subprocess-without-shell-equals-true`]: https://docs.astral.sh/ruff/rules/subprocess-without-shell-equals-true
+[`unused-noqa`]: https://docs.astral.sh/ruff/rules/unused-noqa

crates/ruff/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.12.10"
+version = "0.13.0"
 publish = true
 authors = { workspace = true }
 edition = { workspace = true }

crates/ruff/src/commands/check.rs

@@ -6,12 +6,14 @@ use std::time::Instant;
 use anyhow::Result;
 use colored::Colorize;
 use ignore::Error;
-use log::{debug, error, warn};
+use log::{debug, warn};
 #[cfg(not(target_family = "wasm"))]
 use rayon::prelude::*;
 use rustc_hash::FxHashMap;
 
-use ruff_db::diagnostic::Diagnostic;
+use ruff_db::diagnostic::{
+    Annotation, Diagnostic, DiagnosticId, Span, SubDiagnostic, SubDiagnosticSeverity,
+};
 use ruff_db::panic::catch_unwind;
 use ruff_linter::package::PackageRoot;
 use ruff_linter::registry::Rule;
@@ -193,21 +195,24 @@ fn lint_path(
     match result {
         Ok(inner) => inner,
         Err(error) => {
-            let message = r"This indicates a bug in Ruff. If you could open an issue at:
-
-    https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D
-
-...with the relevant file contents, the `pyproject.toml` settings, and the following stack trace, we'd be very appreciative!
-";
-
-            error!(
-                "{}{}{} {message}\n{error}",
-                "Panicked while linting ".bold(),
-                fs::relativize_path(path).bold(),
-                ":".bold()
+            let message = match error.payload.as_str() {
+                Some(summary) => format!("Fatal error while linting: {summary}"),
+                _ => "Fatal error while linting".to_owned(),
+            };
+            let mut diagnostic = Diagnostic::new(
+                DiagnosticId::Panic,
+                ruff_db::diagnostic::Severity::Fatal,
+                message,
             );
-
-            Ok(Diagnostics::default())
+            let span = Span::from(SourceFileBuilder::new(path.to_string_lossy(), "").finish());
+            let mut annotation = Annotation::primary(span);
+            annotation.set_file_level(true);
+            diagnostic.annotate(annotation);
+            diagnostic.sub(SubDiagnostic::new(
+                SubDiagnosticSeverity::Info,
+                format!("{error}"),
+            ));
+            Ok(Diagnostics::new(vec![diagnostic], FxHashMap::default()))
         }
     }
 }

crates/ruff/src/lib.rs

@@ -9,10 +9,11 @@ use std::sync::mpsc::channel;
 use anyhow::Result;
 use clap::CommandFactory;
 use colored::Colorize;
-use log::warn;
+use log::{error, warn};
 use notify::{RecursiveMode, Watcher, recommended_watcher};
 
 use args::{GlobalConfigArgs, ServerCommand};
+use ruff_db::diagnostic::{Diagnostic, Severity};
 use ruff_linter::logging::{LogLevel, set_up_logging};
 use ruff_linter::settings::flags::FixMode;
 use ruff_linter::settings::types::OutputFormat;
@@ -444,6 +445,27 @@ pub fn check(args: CheckCommand, global_options: GlobalConfigArgs) -> Result<Exi
         }
 
         if !cli.exit_zero {
+            let max_severity = diagnostics
+                .inner
+                .iter()
+                .map(Diagnostic::severity)
+                .max()
+                .unwrap_or(Severity::Info);
+            if max_severity.is_fatal() {
+                // When a panic/fatal error is reported, prompt the user to open an issue on github.
+                // Diagnostics with severity `fatal` will be sorted to the bottom, and printing the
+                // message here instead of attaching it to the diagnostic ensures that we only print
+                // it once instead of repeating it for each diagnostic. Prints to stderr to prevent
+                // the message from being captured by tools parsing the normal output.
+                let message = "Panic during linting indicates a bug in Ruff. If you could open an issue at:
+
+https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D
+
+...with the relevant file contents, the `pyproject.toml` settings, and the stack trace above, we'd be very appreciative!
+";
+                error!("{message}");
+                return Ok(ExitStatus::Error);
+            }
             if cli.diff {
                 // If we're printing a diff, we always want to exit non-zero if there are
                 // any fixable violations (since we've printed the diff, but not applied the

crates/ruff/src/printer.rs

@@ -10,14 +10,12 @@ use ruff_linter::linter::FixTable;
 use serde::Serialize;
 
 use ruff_db::diagnostic::{
-    Diagnostic, DiagnosticFormat, DisplayDiagnosticConfig, DisplayDiagnostics, SecondaryCode,
+    Diagnostic, DiagnosticFormat, DisplayDiagnosticConfig, DisplayDiagnostics,
+    DisplayGithubDiagnostics, GithubRenderer, SecondaryCode,
 };
 use ruff_linter::fs::relativize_path;
 use ruff_linter::logging::LogLevel;
-use ruff_linter::message::{
-    Emitter, EmitterContext, GithubEmitter, GitlabEmitter, GroupedEmitter, SarifEmitter,
-    TextEmitter,
-};
+use ruff_linter::message::{Emitter, EmitterContext, GroupedEmitter, SarifEmitter, TextEmitter};
 use ruff_linter::notify_user;
 use ruff_linter::settings::flags::{self};
 use ruff_linter::settings::types::{OutputFormat, UnsafeFixes};
@@ -31,8 +29,6 @@ bitflags! {
         const SHOW_VIOLATIONS = 1 << 0;
         /// Whether to show a summary of the fixed violations when emitting diagnostics.
         const SHOW_FIX_SUMMARY = 1 << 1;
-        /// Whether to show a diff of each fixed violation when emitting diagnostics.
-        const SHOW_FIX_DIFF = 1 << 2;
     }
 }
 
@@ -229,41 +225,35 @@ impl Printer {
         let context = EmitterContext::new(&diagnostics.notebook_indexes);
         let fixables = FixableStatistics::try_from(diagnostics, self.unsafe_fixes);
 
+        let config = DisplayDiagnosticConfig::default().preview(preview);
+
         match self.format {
             OutputFormat::Json => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::Json)
-                    .preview(preview);
+                let config = config.format(DiagnosticFormat::Json);
                 let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
                 write!(writer, "{value}")?;
             }
             OutputFormat::Rdjson => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::Rdjson)
-                    .preview(preview);
+                let config = config.format(DiagnosticFormat::Rdjson);
                 let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
                 write!(writer, "{value}")?;
             }
             OutputFormat::JsonLines => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::JsonLines)
-                    .preview(preview);
+                let config = config.format(DiagnosticFormat::JsonLines);
                 let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
                 write!(writer, "{value}")?;
             }
             OutputFormat::Junit => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::Junit)
-                    .preview(preview);
+                let config = config.format(DiagnosticFormat::Junit);
                 let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
                 write!(writer, "{value}")?;
             }
             OutputFormat::Concise | OutputFormat::Full => {
                 TextEmitter::default()
                     .with_show_fix_status(show_fix_status(self.fix_mode, fixables.as_ref()))
-                    .with_show_fix_diff(self.flags.intersects(Flags::SHOW_FIX_DIFF))
+                    .with_show_fix_diff(self.format == OutputFormat::Full && preview)
                     .with_show_source(self.format == OutputFormat::Full)
-                    .with_unsafe_fixes(self.unsafe_fixes)
+                    .with_fix_applicability(self.unsafe_fixes.required_applicability())
                     .with_preview(preview)
                     .emit(writer, &diagnostics.inner, &context)?;
 
@@ -293,22 +283,22 @@ impl Printer {
                 self.write_summary_text(writer, diagnostics)?;
             }
             OutputFormat::Github => {
-                GithubEmitter.emit(writer, &diagnostics.inner, &context)?;
+                let renderer = GithubRenderer::new(&context, "Ruff");
+                let value = DisplayGithubDiagnostics::new(&renderer, &diagnostics.inner);
+                write!(writer, "{value}")?;
             }
             OutputFormat::Gitlab => {
-                GitlabEmitter::default().emit(writer, &diagnostics.inner, &context)?;
+                let config = config.format(DiagnosticFormat::Gitlab);
+                let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
+                write!(writer, "{value}")?;
             }
             OutputFormat::Pylint => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::Pylint)
-                    .preview(preview);
+                let config = config.format(DiagnosticFormat::Pylint);
                 let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
                 write!(writer, "{value}")?;
             }
             OutputFormat::Azure => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::Azure)
-                    .preview(preview);
+                let config = config.format(DiagnosticFormat::Azure);
                 let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
                 write!(writer, "{value}")?;
             }
@@ -461,7 +451,7 @@ impl Printer {
             TextEmitter::default()
                 .with_show_fix_status(show_fix_status(self.fix_mode, fixables.as_ref()))
                 .with_show_source(preview)
-                .with_unsafe_fixes(self.unsafe_fixes)
+                .with_fix_applicability(self.unsafe_fixes.required_applicability())
                 .emit(writer, &diagnostics.inner, &context)?;
         }
         writer.flush()?;

crates/ruff/tests/analyze_graph.rs

@@ -246,6 +246,59 @@ fn string_detection() -> Result<()> {
     Ok(())
 }
 
+#[test]
+fn string_detection_from_config() -> Result<()> {
+    let tempdir = TempDir::new()?;
+
+    let root = ChildPath::new(tempdir.path());
+
+    // Configure string import detection with a lower min-dots via ruff.toml
+    root.child("ruff.toml").write_str(indoc::indoc! {r#"
+        [analyze]
+        detect-string-imports = true
+        string-imports-min-dots = 1
+    "#})?;
+
+    root.child("ruff").child("__init__.py").write_str("")?;
+    root.child("ruff")
+        .child("a.py")
+        .write_str(indoc::indoc! {r#"
+        import ruff.b
+    "#})?;
+    root.child("ruff")
+        .child("b.py")
+        .write_str(indoc::indoc! {r#"
+        import importlib
+
+        importlib.import_module("ruff.c")
+    "#})?;
+    root.child("ruff").child("c.py").write_str("")?;
+
+    insta::with_settings!({
+        filters => INSTA_FILTERS.to_vec(),
+    }, {
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
+        success: true
+        exit_code: 0
+        ----- stdout -----
+        {
+          "ruff/__init__.py": [],
+          "ruff/a.py": [
+            "ruff/b.py"
+          ],
+          "ruff/b.py": [
+            "ruff/c.py"
+          ],
+          "ruff/c.py": []
+        }
+
+        ----- stderr -----
+        "#);
+    });
+
+    Ok(())
+}
+
 #[test]
 fn globs() -> Result<()> {
     let tempdir = TempDir::new()?;

crates/ruff/tests/integration_test.rs

@@ -1489,6 +1489,8 @@ fn deprecated_direct() {
 
 #[test]
 fn deprecated_multiple_direct() {
+    // Multiple deprecated rules selected by exact code should be included
+    // but a warning should be displayed
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF920", "--select", "RUF921"])
         .build();
@@ -1516,16 +1518,10 @@ fn deprecated_indirect() {
     // since it is not a "direct" selection
     let mut cmd = RuffCheck::default().args(["--select", "RUF92"]).build();
     assert_cmd_snapshot!(cmd, @r"
-    success: false
-    exit_code: 1
+    success: true
+    exit_code: 0
     ----- stdout -----
-    RUF920 Hey this is a deprecated test rule.
-    --> -:1:1
-
-    RUF921 Hey this is another deprecated test rule.
-    --> -:1:1
-
-    Found 2 errors.
+    All checks passed!
 
     ----- stderr -----
     ");
@@ -2155,16 +2151,10 @@ extend-safe-fixes = ["RUF9"]
     RUF903 Hey this is a stable test rule with a display only fix.
     --> -:1:1
 
-    RUF920 Hey this is a deprecated test rule.
-    --> -:1:1
-
-    RUF921 Hey this is another deprecated test rule.
-    --> -:1:1
-
     RUF950 Hey this is a test rule that was redirected from another.
     --> -:1:1
 
-    Found 7 errors.
+    Found 5 errors.
     [*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
 
     ----- stderr -----

crates/ruff/tests/lint.rs

@@ -5059,6 +5059,59 @@ fn flake8_import_convention_unused_aliased_import_no_conflict() {
     );
 }
 
+// https://github.com/astral-sh/ruff/issues/19842
+#[test]
+fn pyupgrade_up026_respects_isort_required_import_fix() {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME))
+            .arg("--isolated")
+            .arg("check")
+            .arg("-")
+            .args(["--select", "I002,UP026"])
+            .arg("--config")
+            .arg(r#"lint.isort.required-imports=["import mock"]"#)
+            .arg("--fix")
+            .arg("--no-cache")
+            .pass_stdin("1\n"),
+        @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    import mock
+    1
+
+    ----- stderr -----
+    Found 1 error (1 fixed, 0 remaining).
+    "
+    );
+}
+
+// https://github.com/astral-sh/ruff/issues/19842
+#[test]
+fn pyupgrade_up026_respects_isort_required_import_from_fix() {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME))
+            .arg("--isolated")
+            .arg("check")
+            .arg("-")
+            .args(["--select", "I002,UP026"])
+            .arg("--config")
+            .arg(r#"lint.isort.required-imports = ["from mock import mock"]"#)
+            .arg("--fix")
+            .arg("--no-cache")
+            .pass_stdin("from mock import mock\n"),
+        @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    from mock import mock
+
+    ----- stderr -----
+    All checks passed!
+    "
+    );
+}
+
 // See: https://github.com/astral-sh/ruff/issues/16177
 #[test]
 fn flake8_pyi_redundant_none_literal() {
@@ -5780,28 +5833,6 @@ match 42:  # invalid-syntax
     Ok(())
 }
 
-#[test]
-fn future_annotations_preview_warning() {
-    assert_cmd_snapshot!(
-        Command::new(get_cargo_bin(BIN_NAME))
-            .args(STDIN_BASE_OPTIONS)
-            .args(["--config", "lint.future-annotations = true"])
-            .args(["--select", "F"])
-            .arg("--no-preview")
-            .arg("-")
-            .pass_stdin("1"),
-        @r"
-    success: true
-    exit_code: 0
-    ----- stdout -----
-    All checks passed!
-
-    ----- stderr -----
-    warning: The `lint.future-annotations` setting will have no effect because `preview` is disabled
-    ",
-    );
-}
-
 #[test]
 fn up045_nested_optional_flatten_all() {
     let contents = "\
@@ -5830,3 +5861,143 @@ nested_optional: Optional[Optional[Optional[str]]] = None
     ",
     );
 }
+
+#[test]
+fn show_fixes_in_full_output_with_preview_enabled() {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME))
+            .args(["check", "--no-cache", "--output-format", "full"])
+            .args(["--select", "F401"])
+            .arg("--preview")
+            .arg("-")
+            .pass_stdin("import math"),
+        @r"
+    success: false
+    exit_code: 1
+    ----- stdout -----
+    F401 [*] `math` imported but unused
+     --> -:1:8
+      |
+    1 | import math
+      |        ^^^^
+      |
+    help: Remove unused import: `math`
+      - import math
+
+    Found 1 error.
+    [*] 1 fixable with the `--fix` option.
+
+    ----- stderr -----
+    ",
+    );
+}
+
+#[test]
+fn rule_panic_mixed_results_concise() -> Result<()> {
+    let tempdir = TempDir::new()?;
+
+    // Create python files
+    let file_a_path = tempdir.path().join("normal.py");
+    let file_b_path = tempdir.path().join("panic.py");
+    fs::write(&file_a_path, b"import os")?;
+    fs::write(&file_b_path, b"print('hello, world!')")?;
+
+    insta::with_settings!({
+        filters => vec![
+            (tempdir_filter(&tempdir).as_str(), "[TMP]/"),
+            (r"\\", r"/"),
+        ]
+    }, {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME))
+            .args(["check", "--select", "RUF9", "--preview", "--output-format=concise", "--no-cache"])
+            .args([file_a_path, file_b_path]),
+        @r"
+    success: false
+    exit_code: 2
+    ----- stdout -----
+    [TMP]/normal.py:1:1: RUF900 Hey this is a stable test rule.
+    [TMP]/normal.py:1:1: RUF901 [*] Hey this is a stable test rule with a safe fix.
+    [TMP]/normal.py:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
+    [TMP]/normal.py:1:1: RUF903 Hey this is a stable test rule with a display only fix.
+    [TMP]/normal.py:1:1: RUF911 Hey this is a preview test rule.
+    [TMP]/normal.py:1:1: RUF950 Hey this is a test rule that was redirected from another.
+    [TMP]/panic.py: panic: Fatal error while linting: This is a fake panic for testing.
+    Found 7 errors.
+    [*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
+
+    ----- stderr -----
+    error: Panic during linting indicates a bug in Ruff. If you could open an issue at:
+
+    https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D
+
+    ...with the relevant file contents, the `pyproject.toml` settings, and the stack trace above, we'd be very appreciative!
+    ");
+    });
+    Ok(())
+}
+
+#[test]
+fn rule_panic_mixed_results_full() -> Result<()> {
+    let tempdir = TempDir::new()?;
+
+    // Create python files
+    let file_a_path = tempdir.path().join("normal.py");
+    let file_b_path = tempdir.path().join("panic.py");
+    fs::write(&file_a_path, b"import os")?;
+    fs::write(&file_b_path, b"print('hello, world!')")?;
+
+    insta::with_settings!({
+        filters => vec![
+            (tempdir_filter(&tempdir).as_str(), "[TMP]/"),
+            (r"\\", r"/"),
+        ]
+    }, {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME))
+            .args(["check", "--select", "RUF9", "--preview", "--output-format=full", "--no-cache"])
+            .args([file_a_path, file_b_path]),
+        @r"
+    success: false
+    exit_code: 2
+    ----- stdout -----
+    RUF900 Hey this is a stable test rule.
+    --> [TMP]/normal.py:1:1
+
+    RUF901 [*] Hey this is a stable test rule with a safe fix.
+    --> [TMP]/normal.py:1:1
+    1 + # fix from stable-test-rule-safe-fix
+    2 | import os
+
+    RUF902 Hey this is a stable test rule with an unsafe fix.
+    --> [TMP]/normal.py:1:1
+
+    RUF903 Hey this is a stable test rule with a display only fix.
+    --> [TMP]/normal.py:1:1
+
+    RUF911 Hey this is a preview test rule.
+    --> [TMP]/normal.py:1:1
+
+    RUF950 Hey this is a test rule that was redirected from another.
+    --> [TMP]/normal.py:1:1
+
+    panic: Fatal error while linting: This is a fake panic for testing.
+    --> [TMP]/panic.py:1:1
+    info: panicked at crates/ruff_linter/src/rules/ruff/rules/test_rules.rs:511:9:
+    This is a fake panic for testing.
+    run with `RUST_BACKTRACE=1` environment variable to display a backtrace
+
+
+    Found 7 errors.
+    [*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
+
+    ----- stderr -----
+    error: Panic during linting indicates a bug in Ruff. If you could open an issue at:
+
+    https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D
+
+    ...with the relevant file contents, the `pyproject.toml` settings, and the stack trace above, we'd be very appreciative!
+    ");
+    });
+    Ok(())
+}

crates/ruff/tests/snapshots/integration_test__rule_f401.snap

@@ -55,6 +55,10 @@ either a redundant alias or, if already present in the file, an `__all__` entry.
 to remove third-party and standard library imports -- the fix is unsafe because the module's
 interface changes.
 
+See [this FAQ section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc)
+for more details on how Ruff
+determines whether an import is first or third-party.
+
 ## Example
 
 ```python
@@ -83,11 +87,6 @@ else:
     print("numpy is not installed")
 ```
 
-## Preview
-When [preview](https://docs.astral.sh/ruff/preview/) is enabled,
-the criterion for determining whether an import is first-party
-is stricter, which could affect the suggested fix. See [this FAQ section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc) for more details.
-
 ## Options
 - `lint.ignore-init-module-imports`
 - `lint.pyflakes.allowed-unused-imports`

crates/ruff/tests/snapshots/lint__output_format_gitlab.snap

@@ -20,59 +20,59 @@ exit_code: 1
   {
     "check_name": "F401",
     "description": "F401: `os` imported but unused",
+    "severity": "major",
     "fingerprint": "4dbad37161e65c72",
     "location": {
       "path": "input.py",
       "positions": {
         "begin": {
-          "column": 8,
-          "line": 1
+          "line": 1,
+          "column": 8
         },
         "end": {
-          "column": 10,
-          "line": 1
+          "line": 1,
+          "column": 10
         }
       }
-    },
-    "severity": "major"
+    }
   },
   {
     "check_name": "F821",
     "description": "F821: Undefined name `y`",
+    "severity": "major",
     "fingerprint": "7af59862a085230",
     "location": {
       "path": "input.py",
       "positions": {
         "begin": {
-          "column": 5,
-          "line": 2
+          "line": 2,
+          "column": 5
         },
         "end": {
-          "column": 6,
-          "line": 2
+          "line": 2,
+          "column": 6
         }
       }
-    },
-    "severity": "major"
+    }
   },
   {
     "check_name": "invalid-syntax",
     "description": "invalid-syntax: Cannot use `match` statement on Python 3.9 (syntax was added in Python 3.10)",
+    "severity": "major",
     "fingerprint": "e558cec859bb66e8",
     "location": {
       "path": "input.py",
       "positions": {
         "begin": {
-          "column": 1,
-          "line": 3
+          "line": 3,
+          "column": 1
         },
         "end": {
-          "column": 6,
-          "line": 3
+          "line": 3,
+          "column": 6
         }
       }
-    },
-    "severity": "major"
+    }
   }
 ]
 ----- stderr -----

crates/ruff/tests/snapshots/lint__output_format_sarif.snap

@@ -95,7 +95,7 @@ exit_code: 1
           "rules": [
             {
               "fullDescription": {
-                "text": "## What it does\nChecks for unused imports.\n\n## Why is this bad?\nUnused imports add a performance overhead at runtime, and risk creating\nimport cycles. They also increase the cognitive load of reading the code.\n\nIf an import statement is used to check for the availability or existence\nof a module, consider using `importlib.util.find_spec` instead.\n\nIf an import statement is used to re-export a symbol as part of a module's\npublic interface, consider using a \"redundant\" import alias, which\ninstructs Ruff (and other tools) to respect the re-export, and avoid\nmarking it as unused, as in:\n\n```python\nfrom module import member as member\n```\n\nAlternatively, you can use `__all__` to declare a symbol as part of the module's\ninterface, as in:\n\n```python\n# __init__.py\nimport some_module\n\n__all__ = [\"some_module\"]\n```\n\n## Fix safety\n\nFixes to remove unused imports are safe, except in `__init__.py` files.\n\nApplying fixes to `__init__.py` files is currently in preview. The fix offered depends on the\ntype of the unused import. Ruff will suggest a safe fix to export first-party imports with\neither a redundant alias or, if already present in the file, an `__all__` entry. If multiple\n`__all__` declarations are present, Ruff will not offer a fix. Ruff will suggest an unsafe fix\nto remove third-party and standard library imports -- the fix is unsafe because the module's\ninterface changes.\n\n## Example\n\n```python\nimport numpy as np  # unused import\n\n\ndef area(radius):\n    return 3.14 * radius**2\n```\n\nUse instead:\n\n```python\ndef area(radius):\n    return 3.14 * radius**2\n```\n\nTo check the availability of a module, use `importlib.util.find_spec`:\n\n```python\nfrom importlib.util import find_spec\n\nif find_spec(\"numpy\") is not None:\n    print(\"numpy is installed\")\nelse:\n    print(\"numpy is not installed\")\n```\n\n## Preview\nWhen [preview](https://docs.astral.sh/ruff/preview/) is enabled,\nthe criterion for determining whether an import is first-party\nis stricter, which could affect the suggested fix. See [this FAQ section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc) for more details.\n\n## Options\n- `lint.ignore-init-module-imports`\n- `lint.pyflakes.allowed-unused-imports`\n\n## References\n- [Python documentation: `import`](https://docs.python.org/3/reference/simple_stmts.html#the-import-statement)\n- [Python documentation: `importlib.util.find_spec`](https://docs.python.org/3/library/importlib.html#importlib.util.find_spec)\n- [Typing documentation: interface conventions](https://typing.python.org/en/latest/spec/distributing.html#library-interface-public-and-private-symbols)\n"
+                "text": "## What it does\nChecks for unused imports.\n\n## Why is this bad?\nUnused imports add a performance overhead at runtime, and risk creating\nimport cycles. They also increase the cognitive load of reading the code.\n\nIf an import statement is used to check for the availability or existence\nof a module, consider using `importlib.util.find_spec` instead.\n\nIf an import statement is used to re-export a symbol as part of a module's\npublic interface, consider using a \"redundant\" import alias, which\ninstructs Ruff (and other tools) to respect the re-export, and avoid\nmarking it as unused, as in:\n\n```python\nfrom module import member as member\n```\n\nAlternatively, you can use `__all__` to declare a symbol as part of the module's\ninterface, as in:\n\n```python\n# __init__.py\nimport some_module\n\n__all__ = [\"some_module\"]\n```\n\n## Fix safety\n\nFixes to remove unused imports are safe, except in `__init__.py` files.\n\nApplying fixes to `__init__.py` files is currently in preview. The fix offered depends on the\ntype of the unused import. Ruff will suggest a safe fix to export first-party imports with\neither a redundant alias or, if already present in the file, an `__all__` entry. If multiple\n`__all__` declarations are present, Ruff will not offer a fix. Ruff will suggest an unsafe fix\nto remove third-party and standard library imports -- the fix is unsafe because the module's\ninterface changes.\n\nSee [this FAQ section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc)\nfor more details on how Ruff\ndetermines whether an import is first or third-party.\n\n## Example\n\n```python\nimport numpy as np  # unused import\n\n\ndef area(radius):\n    return 3.14 * radius**2\n```\n\nUse instead:\n\n```python\ndef area(radius):\n    return 3.14 * radius**2\n```\n\nTo check the availability of a module, use `importlib.util.find_spec`:\n\n```python\nfrom importlib.util import find_spec\n\nif find_spec(\"numpy\") is not None:\n    print(\"numpy is installed\")\nelse:\n    print(\"numpy is not installed\")\n```\n\n## Options\n- `lint.ignore-init-module-imports`\n- `lint.pyflakes.allowed-unused-imports`\n\n## References\n- [Python documentation: `import`](https://docs.python.org/3/reference/simple_stmts.html#the-import-statement)\n- [Python documentation: `importlib.util.find_spec`](https://docs.python.org/3/library/importlib.html#importlib.util.find_spec)\n- [Typing documentation: interface conventions](https://typing.python.org/en/latest/spec/distributing.html#library-interface-public-and-private-symbols)\n"
               },
               "help": {
                 "text": "`{name}` imported but unused; consider using `importlib.util.find_spec` to test for availability"

crates/ruff_benchmark/benches/ty.rs

@@ -450,9 +450,6 @@ fn benchmark_complex_constrained_attributes_2(criterion: &mut Criterion) {
                     r#"
                     class C:
                         def f(self: "C"):
-                            self.a = ""
-                            self.b = ""
-
                             if isinstance(self.a, str):
                                 return
 
@@ -466,6 +463,56 @@ fn benchmark_complex_constrained_attributes_2(criterion: &mut Criterion) {
                                 return
                             if isinstance(self.b, str):
                                 return
+                            if isinstance(self.b, str):
+                                return
+                            if isinstance(self.b, str):
+                                return
+
+                            self.a = ""
+                            self.b = ""
+                    "#,
+                )
+            },
+            |case| {
+                let Case { db, .. } = case;
+                let result = db.check();
+                assert_eq!(result.len(), 0);
+            },
+            BatchSize::SmallInput,
+        );
+    });
+}
+
+fn benchmark_complex_constrained_attributes_3(criterion: &mut Criterion) {
+    setup_rayon();
+
+    criterion.bench_function("ty_micro[complex_constrained_attributes_3]", |b| {
+        b.iter_batched_ref(
+            || {
+                // This is a regression test for https://github.com/astral-sh/ty/issues/758
+                setup_micro_case(
+                    r#"
+                    class GridOut:
+                        def __init__(self: "GridOut") -> None:
+                            self._buffer = b""
+
+                        def _read_size_or_line(self: "GridOut", size: int = -1):
+                            if size > self._position:
+                                size = self._position
+                                pass
+                            if size == 0:
+                                return bytes()
+
+                            while size > 0:
+                                if self._buffer:
+                                    buf = self._buffer
+                                    self._buffer = b""
+                                else:
+                                    buf = b""
+
+                                if len(buf) > size:
+                                    self._buffer = buf
+                                    self._position -= len(self._buffer)
                     "#,
                 )
             },
@@ -668,6 +715,7 @@ criterion_group!(
     benchmark_tuple_implicit_instance_attributes,
     benchmark_complex_constrained_attributes_1,
     benchmark_complex_constrained_attributes_2,
+    benchmark_complex_constrained_attributes_3,
     benchmark_many_enum_members,
 );
 criterion_group!(project, anyio, attrs, hydra, datetype);

crates/ruff_db/Cargo.toml

@@ -34,6 +34,7 @@ glob = { workspace = true }
 ignore = { workspace = true, optional = true }
 matchit = { workspace = true }
 path-slash = { workspace = true }
+pathdiff = { workspace = true }
 quick-junit = { workspace = true, optional = true }
 rustc-hash = { workspace = true }
 salsa = { workspace = true }
@@ -53,7 +54,7 @@ web-time = { version = "1.1.0" }
 etcetera = { workspace = true, optional = true }
 
 [dev-dependencies]
-insta = { workspace = true }
+insta = { workspace = true, features = ["filters"] }
 tempfile = { workspace = true }
 
 [features]

crates/ruff_db/src/diagnostic/mod.rs

@@ -8,6 +8,7 @@ use ruff_text_size::{Ranged, TextRange, TextSize};
 
 pub use self::render::{
     DisplayDiagnostic, DisplayDiagnostics, FileResolver, Input, ceil_char_boundary,
+    github::{DisplayGithubDiagnostics, GithubRenderer},
 };
 use crate::{Db, files::File};
 
@@ -349,6 +350,13 @@ impl Diagnostic {
         self.fix().is_some()
     }
 
+    /// Returns `true` if the diagnostic is [`fixable`](Diagnostic::fixable) and applies at the
+    /// configured applicability level.
+    pub fn has_applicable_fix(&self, config: &DisplayDiagnosticConfig) -> bool {
+        self.fix()
+            .is_some_and(|fix| fix.applies(config.fix_applicability))
+    }
+
     /// Returns the offset of the parent statement for this diagnostic if it exists.
     ///
     /// This is primarily used for checking noqa/secondary code suppressions.
@@ -447,24 +455,26 @@ impl Diagnostic {
 
     /// Computes the start source location for the message.
     ///
-    /// Panics if the diagnostic has no primary span, if its file is not a `SourceFile`, or if the
-    /// span has no range.
-    pub fn expect_ruff_start_location(&self) -> LineColumn {
-        self.expect_primary_span()
-            .expect_ruff_file()
-            .to_source_code()
-            .line_column(self.expect_range().start())
+    /// Returns None if the diagnostic has no primary span, if its file is not a `SourceFile`,
+    /// or if the span has no range.
+    pub fn ruff_start_location(&self) -> Option<LineColumn> {
+        Some(
+            self.ruff_source_file()?
+                .to_source_code()
+                .line_column(self.range()?.start()),
+        )
     }
 
     /// Computes the end source location for the message.
     ///
-    /// Panics if the diagnostic has no primary span, if its file is not a `SourceFile`, or if the
-    /// span has no range.
-    pub fn expect_ruff_end_location(&self) -> LineColumn {
-        self.expect_primary_span()
-            .expect_ruff_file()
-            .to_source_code()
-            .line_column(self.expect_range().end())
+    /// Returns None if the diagnostic has no primary span, if its file is not a `SourceFile`,
+    /// or if the span has no range.
+    pub fn ruff_end_location(&self) -> Option<LineColumn> {
+        Some(
+            self.ruff_source_file()?
+                .to_source_code()
+                .line_column(self.range()?.end()),
+        )
     }
 
     /// Returns the [`SourceFile`] which the message belongs to.
@@ -485,22 +495,22 @@ impl Diagnostic {
         self.primary_span()?.range()
     }
 
-    /// Returns the [`TextRange`] for the diagnostic.
-    ///
-    /// Panics if the diagnostic has no primary span or if the span has no range.
-    pub fn expect_range(&self) -> TextRange {
-        self.range().expect("Expected a range for the primary span")
-    }
-
     /// Returns the ordering of diagnostics based on the start of their ranges, if they have any.
     ///
-    /// Panics if either diagnostic has no primary span, if the span has no range, or if its file is
-    /// not a `SourceFile`.
+    /// Panics if either diagnostic has no primary span, or if its file is not a `SourceFile`.
     pub fn ruff_start_ordering(&self, other: &Self) -> std::cmp::Ordering {
-        (self.expect_ruff_source_file(), self.expect_range().start()).cmp(&(
+        let a = (
+            self.severity().is_fatal(),
+            self.expect_ruff_source_file(),
+            self.range().map(|r| r.start()),
+        );
+        let b = (
+            other.severity().is_fatal(),
             other.expect_ruff_source_file(),
-            other.expect_range().start(),
-        ))
+            other.range().map(|r| r.start()),
+        );
+
+        a.cmp(&b)
     }
 }
 
@@ -1435,6 +1445,16 @@ pub enum DiagnosticFormat {
     /// Print diagnostics in the format expected by JUnit.
     #[cfg(feature = "junit")]
     Junit,
+    /// Print diagnostics in the JSON format used by GitLab [Code Quality] reports.
+    ///
+    /// [Code Quality]: https://docs.gitlab.com/ci/testing/code_quality/#code-quality-report-format
+    #[cfg(feature = "serde")]
+    Gitlab,
+
+    /// Print diagnostics in the format used by [GitHub Actions] workflow error annotations.
+    ///
+    /// [GitHub Actions]: https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-commands#setting-an-error-message
+    Github,
 }
 
 /// A representation of the kinds of messages inside a diagnostic.

crates/ruff_db/src/diagnostic/render.rs

@@ -25,11 +25,15 @@ use super::{
 
 use azure::AzureRenderer;
 use concise::ConciseRenderer;
+use github::GithubRenderer;
 use pylint::PylintRenderer;
 
 mod azure;
 mod concise;
 mod full;
+pub mod github;
+#[cfg(feature = "serde")]
+mod gitlab;
 #[cfg(feature = "serde")]
 mod json;
 #[cfg(feature = "serde")]
@@ -136,6 +140,13 @@ impl std::fmt::Display for DisplayDiagnostics<'_> {
             DiagnosticFormat::Junit => {
                 junit::JunitRenderer::new(self.resolver).render(f, self.diagnostics)?;
             }
+            #[cfg(feature = "serde")]
+            DiagnosticFormat::Gitlab => {
+                gitlab::GitlabRenderer::new(self.resolver).render(f, self.diagnostics)?;
+            }
+            DiagnosticFormat::Github => {
+                GithubRenderer::new(self.resolver, "ty").render(f, self.diagnostics)?;
+            }
         }
 
         Ok(())
@@ -248,9 +259,7 @@ impl<'a> ResolvedDiagnostic<'a> {
             id,
             message: diag.inner.message.as_str().to_string(),
             annotations,
-            is_fixable: diag
-                .fix()
-                .is_some_and(|fix| fix.applies(config.fix_applicability)),
+            is_fixable: diag.has_applicable_fix(config),
         }
     }
 

crates/ruff_db/src/diagnostic/render/concise.rs

@@ -77,11 +77,9 @@ impl<'a> ConciseRenderer<'a> {
                     )?;
                 }
                 if self.config.show_fix_status {
-                    if let Some(fix) = diag.fix() {
-                        // Do not display an indicator for inapplicable fixes
-                        if fix.applies(self.config.fix_applicability) {
-                            write!(f, "[{fix}] ", fix = fmt_styled("*", stylesheet.separator))?;
-                        }
+                    // Do not display an indicator for inapplicable fixes
+                    if diag.has_applicable_fix(self.config) {
+                        write!(f, "[{fix}] ", fix = fmt_styled("*", stylesheet.separator))?;
                     }
                 }
             } else {

crates/ruff_db/src/diagnostic/render/full.rs

@@ -1,12 +1,11 @@
 use std::borrow::Cow;
 use std::num::NonZeroUsize;
 
-use anstyle::Style;
-use ruff_notebook::NotebookIndex;
 use similar::{ChangeTag, TextDiff};
 
 use ruff_annotate_snippets::Renderer as AnnotateRenderer;
 use ruff_diagnostics::{Applicability, Fix};
+use ruff_notebook::NotebookIndex;
 use ruff_source_file::OneIndexed;
 use ruff_text_size::{Ranged, TextLen, TextRange, TextSize};
 
@@ -58,13 +57,14 @@ impl<'a> FullRenderer<'a> {
             for diag in renderable.diagnostics.iter() {
                 writeln!(f, "{}", renderer.render(diag.to_annotate()))?;
             }
-            writeln!(f)?;
 
-            if self.config.show_fix_diff {
+            if self.config.show_fix_diff && diag.has_applicable_fix(self.config) {
                 if let Some(diff) = Diff::from_diagnostic(diag, &stylesheet, self.resolver) {
-                    writeln!(f, "{diff}")?;
+                    write!(f, "{diff}")?;
                 }
             }
+
+            writeln!(f)?;
         }
 
         Ok(())
@@ -126,19 +126,6 @@ impl std::fmt::Display for Diff<'_> {
             vec![(None, source_text.text_len())]
         };
 
-        let message = match self.fix.applicability() {
-            // TODO(zanieb): Adjust this messaging once it's user-facing
-            Applicability::Safe => "Safe fix",
-            Applicability::Unsafe => "Unsafe fix",
-            Applicability::DisplayOnly => "Display-only fix",
-        };
-
-        // TODO(brent) `stylesheet.separator` is cyan rather than blue, as we had before. I think
-        // we're getting rid of this soon anyway, so I didn't think it was worth adding another
-        // style to the stylesheet temporarily. The color doesn't appear at all in the snapshot
-        // tests, which is the only place these are currently used.
-        writeln!(f, "ℹ {}", fmt_styled(message, self.stylesheet.separator))?;
-
         let mut last_end = TextSize::ZERO;
         for (cell, offset) in cells {
             let range = TextRange::new(last_end, offset);
@@ -167,64 +154,67 @@ impl std::fmt::Display for Diff<'_> {
 
             let diff = TextDiff::from_lines(input, &output);
 
-            let (largest_old, largest_new) = diff
-                .ops()
-                .last()
-                .map(|op| (op.old_range().start, op.new_range().start))
-                .unwrap_or_default();
+            let grouped_ops = diff.grouped_ops(3);
 
-            let digit_with = OneIndexed::from_zero_indexed(largest_new.max(largest_old)).digits();
+            // Find the new line number with the largest number of digits to align all of the line
+            // number separators.
+            let last_op = grouped_ops.last().and_then(|group| group.last());
+            let largest_new = last_op.map(|op| op.new_range().end).unwrap_or_default();
+
+            let digit_with = OneIndexed::new(largest_new).unwrap_or_default().digits();
 
             if let Some(cell) = cell {
-                // Room for 2 digits, 2 x 1 space before each digit, 1 space, and 1 `|`. This
-                // centers the three colons on the pipe.
-                writeln!(f, "{:>1$} cell {cell}", ":::", 2 * digit_with.get() + 4)?;
+                // Room for 1 digit, 1 space, 1 `|`, and 1 more following space. This centers the
+                // three colons on the pipe.
+                writeln!(f, "{:>1$} cell {cell}", ":::", digit_with.get() + 3)?;
             }
 
-            for (idx, group) in diff.grouped_ops(3).iter().enumerate() {
+            for (idx, group) in grouped_ops.iter().enumerate() {
                 if idx > 0 {
                     writeln!(f, "{:-^1$}", "-", 80)?;
                 }
                 for op in group {
                     for change in diff.iter_inline_changes(op) {
-                        let sign = match change.tag() {
-                            ChangeTag::Delete => "-",
-                            ChangeTag::Insert => "+",
-                            ChangeTag::Equal => " ",
+                        let (sign, style, line_no_style, index) = match change.tag() {
+                            ChangeTag::Delete => (
+                                "-",
+                                self.stylesheet.deletion,
+                                self.stylesheet.deletion_line_no,
+                                None,
+                            ),
+                            ChangeTag::Insert => (
+                                "+",
+                                self.stylesheet.insertion,
+                                self.stylesheet.insertion_line_no,
+                                change.new_index(),
+                            ),
+                            ChangeTag::Equal => (
+                                "|",
+                                self.stylesheet.none,
+                                self.stylesheet.line_no,
+                                change.new_index(),
+                            ),
                         };
 
-                        let line_style = LineStyle::from(change.tag(), self.stylesheet);
-
-                        let old_index = change.old_index().map(OneIndexed::from_zero_indexed);
-                        let new_index = change.new_index().map(OneIndexed::from_zero_indexed);
+                        let line = Line {
+                            index: index.map(OneIndexed::from_zero_indexed),
+                            width: digit_with,
+                        };
 
                         write!(
                             f,
-                            "{} {} |{}",
-                            Line {
-                                index: old_index,
-                                width: digit_with,
-                            },
-                            Line {
-                                index: new_index,
-                                width: digit_with,
-                            },
-                            fmt_styled(line_style.apply_to(sign), self.stylesheet.emphasis),
+                            "{line} {sign} ",
+                            line = fmt_styled(line, self.stylesheet.line_no),
+                            sign = fmt_styled(sign, line_no_style),
                         )?;
 
                         for (emphasized, value) in change.iter_strings_lossy() {
                             let value = show_nonprinting(&value);
+                            let styled = fmt_styled(value, style);
                             if emphasized {
-                                write!(
-                                    f,
-                                    "{}",
-                                    fmt_styled(
-                                        line_style.apply_to(&value),
-                                        self.stylesheet.underline
-                                    )
-                                )?;
+                                write!(f, "{}", fmt_styled(styled, self.stylesheet.emphasis))?;
                             } else {
-                                write!(f, "{}", line_style.apply_to(&value))?;
+                                write!(f, "{styled}")?;
                             }
                         }
                         if change.missing_newline() {
@@ -235,31 +225,35 @@ impl std::fmt::Display for Diff<'_> {
             }
         }
 
-        Ok(())
-    }
-}
-
-struct LineStyle {
-    style: Style,
-}
-
-impl LineStyle {
-    fn apply_to(&self, input: &str) -> impl std::fmt::Display {
-        fmt_styled(input, self.style)
-    }
-
-    fn from(value: ChangeTag, stylesheet: &DiagnosticStylesheet) -> LineStyle {
-        match value {
-            ChangeTag::Equal => LineStyle {
-                style: stylesheet.none,
-            },
-            ChangeTag::Delete => LineStyle {
-                style: stylesheet.deletion,
-            },
-            ChangeTag::Insert => LineStyle {
-                style: stylesheet.insertion,
-            },
+        match self.fix.applicability() {
+            Applicability::Safe => {}
+            Applicability::Unsafe => {
+                writeln!(
+                    f,
+                    "{note}: {msg}",
+                    note = fmt_styled("note", self.stylesheet.warning),
+                    msg = fmt_styled(
+                        "This is an unsafe fix and may change runtime behavior",
+                        self.stylesheet.emphasis
+                    )
+                )?;
+            }
+            Applicability::DisplayOnly => {
+                // Note that this is still only used in tests. There's no `--display-only-fixes`
+                // analog to `--unsafe-fixes` for users to activate this or see the styling.
+                writeln!(
+                    f,
+                    "{note}: {msg}",
+                    note = fmt_styled("note", self.stylesheet.error),
+                    msg = fmt_styled(
+                        "This is a display-only fix and is likely to be incorrect",
+                        self.stylesheet.emphasis
+                    )
+                )?;
+            }
         }
+
+        Ok(())
     }
 }
 
@@ -297,7 +291,7 @@ fn show_nonprinting(s: &str) -> Cow<'_, str> {
 
 #[cfg(test)]
 mod tests {
-    use ruff_diagnostics::{Applicability, Fix};
+    use ruff_diagnostics::{Applicability, Edit, Fix};
     use ruff_text_size::{TextLen, TextRange, TextSize};
 
     use crate::diagnostic::{
@@ -703,6 +697,8 @@ print()
     fn notebook_output_with_diff() {
         let (mut env, diagnostics) = create_notebook_diagnostics(DiagnosticFormat::Full);
         env.show_fix_diff(true);
+        env.fix_applicability(Applicability::DisplayOnly);
+
         insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
         error[unused-import][*]: `os` imported but unused
          --> notebook.ipynb:cell 1:2:8
@@ -712,11 +708,9 @@ print()
           |        ^^
           |
         help: Remove unused import: `os`
-
-        ℹ Safe fix
-           ::: cell 1
-        1 1 | # cell 1
-        2   |-import os
+         ::: cell 1
+        1 | # cell 1
+          - import os
 
         error[unused-import][*]: `math` imported but unused
          --> notebook.ipynb:cell 2:2:8
@@ -728,15 +722,13 @@ print()
         4 | print('hello world')
           |
         help: Remove unused import: `math`
+         ::: cell 2
+        1 | # cell 2
+          - import math
+        2 | 
+        3 | print('hello world')
 
-        ℹ Safe fix
-           ::: cell 2
-        1 1 | # cell 2
-        2   |-import math
-        3 2 | 
-        4 3 | print('hello world')
-
-        error[unused-variable]: Local variable `x` is assigned to but never used
+        error[unused-variable][*]: Local variable `x` is assigned to but never used
          --> notebook.ipynb:cell 3:4:5
           |
         2 | def foo():
@@ -745,14 +737,13 @@ print()
           |     ^
           |
         help: Remove assignment to unused variable `x`
-
-        ℹ Unsafe fix
-           ::: cell 3
-        1 1 | # cell 3
-        2 2 | def foo():
-        3 3 |     print()
-        4   |-    x = 1
-        5 4 |
+         ::: cell 3
+        1 | # cell 3
+        2 | def foo():
+        3 |     print()
+          -     x = 1
+        4 | 
+        note: This is an unsafe fix and may change runtime behavior
         ");
     }
 
@@ -760,6 +751,7 @@ print()
     fn notebook_output_with_diff_spanning_cells() {
         let (mut env, mut diagnostics) = create_notebook_diagnostics(DiagnosticFormat::Full);
         env.show_fix_diff(true);
+        env.fix_applicability(Applicability::DisplayOnly);
 
         // Move all of the edits from the later diagnostics to the first diagnostic to simulate a
         // single diagnostic with edits in different cells.
@@ -772,7 +764,7 @@ print()
         *fix = Fix::unsafe_edits(edits.remove(0), edits);
 
         insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[unused-import]: `os` imported but unused
+        error[unused-import][*]: `os` imported but unused
          --> notebook.ipynb:cell 1:2:8
           |
         1 | # cell 1
@@ -780,22 +772,21 @@ print()
           |        ^^
           |
         help: Remove unused import: `os`
-
-        ℹ Unsafe fix
-           ::: cell 1
-        1 1 | # cell 1
-        2   |-import os
-           ::: cell 2
-        1 1 | # cell 2
-        2   |-import math
-        3 2 | 
-        4 3 | print('hello world')
-           ::: cell 3
-        1 1 | # cell 3
-        2 2 | def foo():
-        3 3 |     print()
-        4   |-    x = 1
-        5 4 |
+         ::: cell 1
+        1 | # cell 1
+          - import os
+         ::: cell 2
+        1 | # cell 2
+          - import math
+        2 | 
+        3 | print('hello world')
+         ::: cell 3
+        1 | # cell 3
+        2 | def foo():
+        3 |     print()
+          -     x = 1
+        4 | 
+        note: This is an unsafe fix and may change runtime behavior
         ");
     }
 
@@ -901,4 +892,74 @@ print()
           |
         ");
     }
+
+    /// Test that we handle the width calculation for the line number correctly even for context
+    /// lines at the end of a diff. For example, we want it to render like this:
+    ///
+    /// ```
+    /// 8  |
+    /// 9  |
+    /// 10 |
+    /// ```
+    ///
+    /// and not like this:
+    ///
+    /// ```
+    /// 8 |
+    /// 9 |
+    /// 10 |
+    /// ```
+    #[test]
+    fn longer_line_number_end_of_context() {
+        let mut env = TestEnvironment::new();
+        let contents = "\
+line 1
+line 2
+line 3
+line 4
+line 5
+line 6
+line 7
+line 8
+line 9
+line 10
+        ";
+        env.add("example.py", contents);
+        env.format(DiagnosticFormat::Full);
+        env.show_fix_diff(true);
+        env.fix_applicability(Applicability::DisplayOnly);
+
+        let mut diagnostic = env.err().primary("example.py", "3", "3", "label").build();
+        diagnostic.help("Start of diff:");
+        let target = "line 7";
+        let line9 = contents.find(target).unwrap();
+        let range = TextRange::at(TextSize::try_from(line9).unwrap(), target.text_len());
+        diagnostic.set_fix(Fix::unsafe_edit(Edit::range_replacement(
+            format!("fixed {target}"),
+            range,
+        )));
+
+        insta::assert_snapshot!(env.render(&diagnostic), @r"
+        error[test-diagnostic][*]: main diagnostic message
+         --> example.py:3:1
+          |
+        1 | line 1
+        2 | line 2
+        3 | line 3
+          | ^^^^^^ label
+        4 | line 4
+        5 | line 5
+          |
+        help: Start of diff:
+        4  | line 4
+        5  | line 5
+        6  | line 6
+           - line 7
+        7  + fixed line 7
+        8  | line 8
+        9  | line 9
+        10 | line 10
+        note: This is an unsafe fix and may change runtime behavior
+        ");
+    }
 }

crates/ruff_db/src/diagnostic/render/github.rs

@@ -0,0 +1,136 @@
+use crate::diagnostic::{Diagnostic, FileResolver, Severity};
+
+pub struct GithubRenderer<'a> {
+    resolver: &'a dyn FileResolver,
+    program: &'a str,
+}
+
+impl<'a> GithubRenderer<'a> {
+    pub fn new(resolver: &'a dyn FileResolver, program: &'a str) -> Self {
+        Self { resolver, program }
+    }
+
+    pub(super) fn render(
+        &self,
+        f: &mut std::fmt::Formatter,
+        diagnostics: &[Diagnostic],
+    ) -> std::fmt::Result {
+        for diagnostic in diagnostics {
+            let severity = match diagnostic.severity() {
+                Severity::Info => "notice",
+                Severity::Warning => "warning",
+                Severity::Error | Severity::Fatal => "error",
+            };
+            write!(
+                f,
+                "::{severity} title={program} ({code})",
+                program = self.program,
+                code = diagnostic.secondary_code_or_id()
+            )?;
+
+            if let Some(span) = diagnostic.primary_span() {
+                let file = span.file();
+                write!(f, ",file={file}", file = file.path(self.resolver))?;
+
+                let (start_location, end_location) = if self.resolver.is_notebook(file) {
+                    // We can't give a reasonable location for the structured formats,
+                    // so we show one that's clearly a fallback
+                    None
+                } else {
+                    let diagnostic_source = file.diagnostic_source(self.resolver);
+                    let source_code = diagnostic_source.as_source_code();
+
+                    span.range().map(|range| {
+                        (
+                            source_code.line_column(range.start()),
+                            source_code.line_column(range.end()),
+                        )
+                    })
+                }
+                .unwrap_or_default();
+
+                write!(
+                    f,
+                    ",line={row},col={column},endLine={end_row},endColumn={end_column}::",
+                    row = start_location.line,
+                    column = start_location.column,
+                    end_row = end_location.line,
+                    end_column = end_location.column,
+                )?;
+
+                write!(
+                    f,
+                    "{path}:{row}:{column}: ",
+                    path = file.relative_path(self.resolver).display(),
+                    row = start_location.line,
+                    column = start_location.column,
+                )?;
+            } else {
+                write!(f, "::")?;
+            }
+
+            if let Some(code) = diagnostic.secondary_code() {
+                write!(f, "{code}")?;
+            } else {
+                write!(f, "{id}:", id = diagnostic.id())?;
+            }
+
+            writeln!(f, " {}", diagnostic.body())?;
+        }
+
+        Ok(())
+    }
+}
+
+pub struct DisplayGithubDiagnostics<'a> {
+    renderer: &'a GithubRenderer<'a>,
+    diagnostics: &'a [Diagnostic],
+}
+
+impl<'a> DisplayGithubDiagnostics<'a> {
+    pub fn new(renderer: &'a GithubRenderer<'a>, diagnostics: &'a [Diagnostic]) -> Self {
+        Self {
+            renderer,
+            diagnostics,
+        }
+    }
+}
+
+impl std::fmt::Display for DisplayGithubDiagnostics<'_> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.renderer.render(f, self.diagnostics)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::diagnostic::{
+        DiagnosticFormat,
+        render::tests::{TestEnvironment, create_diagnostics, create_syntax_error_diagnostics},
+    };
+
+    #[test]
+    fn output() {
+        let (env, diagnostics) = create_diagnostics(DiagnosticFormat::Github);
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics));
+    }
+
+    #[test]
+    fn syntax_errors() {
+        let (env, diagnostics) = create_syntax_error_diagnostics(DiagnosticFormat::Github);
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics));
+    }
+
+    #[test]
+    fn missing_file() {
+        let mut env = TestEnvironment::new();
+        env.format(DiagnosticFormat::Github);
+
+        let diag = env.err().build();
+
+        insta::assert_snapshot!(
+            env.render(&diag),
+            @"::error title=ty (test-diagnostic)::test-diagnostic: main diagnostic message",
+        );
+    }
+}

crates/ruff_db/src/diagnostic/render/gitlab.rs

@@ -0,0 +1,205 @@
+use std::{
+    collections::HashSet,
+    hash::{DefaultHasher, Hash, Hasher},
+    path::Path,
+};
+
+use ruff_source_file::LineColumn;
+use serde::{Serialize, Serializer, ser::SerializeSeq};
+
+use crate::diagnostic::{Diagnostic, Severity};
+
+use super::FileResolver;
+
+pub(super) struct GitlabRenderer<'a> {
+    resolver: &'a dyn FileResolver,
+}
+
+impl<'a> GitlabRenderer<'a> {
+    pub(super) fn new(resolver: &'a dyn FileResolver) -> Self {
+        Self { resolver }
+    }
+}
+
+impl GitlabRenderer<'_> {
+    pub(super) fn render(
+        &self,
+        f: &mut std::fmt::Formatter,
+        diagnostics: &[Diagnostic],
+    ) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            serde_json::to_string_pretty(&SerializedMessages {
+                diagnostics,
+                resolver: self.resolver,
+                #[expect(
+                    clippy::disallowed_methods,
+                    reason = "We don't have access to a `System` here, \
+                              and this is only intended for use by GitLab CI, \
+                              which runs on a real `System`."
+                )]
+                project_dir: std::env::var("CI_PROJECT_DIR").ok().as_deref(),
+            })
+            .unwrap()
+        )
+    }
+}
+
+struct SerializedMessages<'a> {
+    diagnostics: &'a [Diagnostic],
+    resolver: &'a dyn FileResolver,
+    project_dir: Option<&'a str>,
+}
+
+impl Serialize for SerializedMessages<'_> {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut s = serializer.serialize_seq(Some(self.diagnostics.len()))?;
+        let mut fingerprints = HashSet::<u64>::with_capacity(self.diagnostics.len());
+
+        for diagnostic in self.diagnostics {
+            let location = diagnostic
+                .primary_span()
+                .map(|span| {
+                    let file = span.file();
+                    let positions = if self.resolver.is_notebook(file) {
+                        // We can't give a reasonable location for the structured formats,
+                        // so we show one that's clearly a fallback
+                        Default::default()
+                    } else {
+                        let diagnostic_source = file.diagnostic_source(self.resolver);
+                        let source_code = diagnostic_source.as_source_code();
+                        span.range()
+                            .map(|range| Positions {
+                                begin: source_code.line_column(range.start()),
+                                end: source_code.line_column(range.end()),
+                            })
+                            .unwrap_or_default()
+                    };
+
+                    let path = self.project_dir.as_ref().map_or_else(
+                        || file.relative_path(self.resolver).display().to_string(),
+                        |project_dir| relativize_path_to(file.path(self.resolver), project_dir),
+                    );
+
+                    Location { path, positions }
+                })
+                .unwrap_or_default();
+
+            let mut message_fingerprint = fingerprint(diagnostic, &location.path, 0);
+
+            // Make sure that we do not get a fingerprint that is already in use
+            // by adding in the previously generated one.
+            while fingerprints.contains(&message_fingerprint) {
+                message_fingerprint = fingerprint(diagnostic, &location.path, message_fingerprint);
+            }
+            fingerprints.insert(message_fingerprint);
+
+            let description = diagnostic.body();
+            let check_name = diagnostic.secondary_code_or_id();
+            let severity = match diagnostic.severity() {
+                Severity::Info => "info",
+                Severity::Warning => "minor",
+                Severity::Error => "major",
+                // Another option here is `blocker`
+                Severity::Fatal => "critical",
+            };
+
+            let value = Message {
+                check_name,
+                // GitLab doesn't display the separate `check_name` field in a Code Quality report,
+                // so prepend it to the description too.
+                description: format!("{check_name}: {description}"),
+                severity,
+                fingerprint: format!("{:x}", message_fingerprint),
+                location,
+            };
+
+            s.serialize_element(&value)?;
+        }
+
+        s.end()
+    }
+}
+
+#[derive(Serialize)]
+struct Message<'a> {
+    check_name: &'a str,
+    description: String,
+    severity: &'static str,
+    fingerprint: String,
+    location: Location,
+}
+
+/// The place in the source code where the issue was discovered.
+///
+/// According to the CodeClimate report format [specification] linked from the GitLab [docs], this
+/// field is required, so we fall back on a default `path` and position if the diagnostic doesn't
+/// have a primary span.
+///
+/// [specification]: https://github.com/codeclimate/platform/blob/master/spec/analyzers/SPEC.md#data-types
+/// [docs]: https://docs.gitlab.com/ci/testing/code_quality/#code-quality-report-format
+#[derive(Default, Serialize)]
+struct Location {
+    path: String,
+    positions: Positions,
+}
+
+#[derive(Default, Serialize)]
+struct Positions {
+    begin: LineColumn,
+    end: LineColumn,
+}
+
+/// Generate a unique fingerprint to identify a violation.
+fn fingerprint(diagnostic: &Diagnostic, project_path: &str, salt: u64) -> u64 {
+    let mut hasher = DefaultHasher::new();
+
+    salt.hash(&mut hasher);
+    diagnostic.name().hash(&mut hasher);
+    project_path.hash(&mut hasher);
+
+    hasher.finish()
+}
+
+/// Convert an absolute path to be relative to the specified project root.
+fn relativize_path_to<P: AsRef<Path>, R: AsRef<Path>>(path: P, project_root: R) -> String {
+    format!(
+        "{}",
+        pathdiff::diff_paths(&path, project_root)
+            .expect("Could not diff paths")
+            .display()
+    )
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::diagnostic::{
+        DiagnosticFormat,
+        render::tests::{create_diagnostics, create_syntax_error_diagnostics},
+    };
+
+    const FINGERPRINT_FILTERS: [(&str, &str); 1] = [(
+        r#""fingerprint": "[a-z0-9]+","#,
+        r#""fingerprint": "<redacted>","#,
+    )];
+
+    #[test]
+    fn output() {
+        let (env, diagnostics) = create_diagnostics(DiagnosticFormat::Gitlab);
+        insta::with_settings!({filters => FINGERPRINT_FILTERS}, {
+            insta::assert_snapshot!(env.render_diagnostics(&diagnostics));
+        });
+    }
+
+    #[test]
+    fn syntax_errors() {
+        let (env, diagnostics) = create_syntax_error_diagnostics(DiagnosticFormat::Gitlab);
+        insta::with_settings!({filters => FINGERPRINT_FILTERS}, {
+            insta::assert_snapshot!(env.render_diagnostics(&diagnostics));
+        });
+    }
+}

crates/ruff_db/src/diagnostic/render/snapshots/ruff_db__diagnostic__render__github__tests__output.snap

@@ -0,0 +1,7 @@
+---
+source: crates/ruff_db/src/diagnostic/render/github.rs
+expression: env.render_diagnostics(&diagnostics)
+---
+::error title=ty (F401),file=fib.py,line=1,col=8,endLine=1,endColumn=10::fib.py:1:8: F401 `os` imported but unused
+::error title=ty (F841),file=fib.py,line=6,col=5,endLine=6,endColumn=6::fib.py:6:5: F841 Local variable `x` is assigned to but never used
+::error title=ty (F821),file=undef.py,line=1,col=4,endLine=1,endColumn=5::undef.py:1:4: F821 Undefined name `a`

crates/ruff_db/src/diagnostic/render/snapshots/ruff_db__diagnostic__render__github__tests__syntax_errors.snap

@@ -0,0 +1,6 @@
+---
+source: crates/ruff_db/src/diagnostic/render/github.rs
+expression: env.render_diagnostics(&diagnostics)
+---
+::error title=ty (invalid-syntax),file=syntax_errors.py,line=1,col=15,endLine=2,endColumn=1::syntax_errors.py:1:15: invalid-syntax: Expected one or more symbol names after import
+::error title=ty (invalid-syntax),file=syntax_errors.py,line=3,col=12,endLine=4,endColumn=1::syntax_errors.py:3:12: invalid-syntax: Expected ')', found newline

crates/ruff_db/src/diagnostic/render/snapshots/ruff_db__diagnostic__render__gitlab__tests__output.snap

@@ -1,63 +1,63 @@
 ---
-source: crates/ruff_linter/src/message/gitlab.rs
-expression: redact_fingerprint(&content)
+source: crates/ruff_db/src/diagnostic/render/gitlab.rs
+expression: env.render_diagnostics(&diagnostics)
 ---
 [
   {
     "check_name": "F401",
     "description": "F401: `os` imported but unused",
+    "severity": "major",
     "fingerprint": "<redacted>",
     "location": {
       "path": "fib.py",
       "positions": {
         "begin": {
-          "column": 8,
-          "line": 1
+          "line": 1,
+          "column": 8
         },
         "end": {
-          "column": 10,
-          "line": 1
+          "line": 1,
+          "column": 10
         }
       }
-    },
-    "severity": "major"
+    }
   },
   {
     "check_name": "F841",
     "description": "F841: Local variable `x` is assigned to but never used",
+    "severity": "major",
     "fingerprint": "<redacted>",
     "location": {
       "path": "fib.py",
       "positions": {
         "begin": {
-          "column": 5,
-          "line": 6
+          "line": 6,
+          "column": 5
         },
         "end": {
-          "column": 6,
-          "line": 6
+          "line": 6,
+          "column": 6
         }
       }
-    },
-    "severity": "major"
+    }
   },
   {
     "check_name": "F821",
     "description": "F821: Undefined name `a`",
+    "severity": "major",
     "fingerprint": "<redacted>",
     "location": {
       "path": "undef.py",
       "positions": {
         "begin": {
-          "column": 4,
-          "line": 1
+          "line": 1,
+          "column": 4
         },
         "end": {
-          "column": 5,
-          "line": 1
+          "line": 1,
+          "column": 5
         }
       }
-    },
-    "severity": "major"
+    }
   }
 ]

crates/ruff_db/src/diagnostic/render/snapshots/ruff_db__diagnostic__render__gitlab__tests__syntax_errors.snap

@@ -1,44 +1,44 @@
 ---
-source: crates/ruff_linter/src/message/gitlab.rs
-expression: redact_fingerprint(&content)
+source: crates/ruff_db/src/diagnostic/render/gitlab.rs
+expression: env.render_diagnostics(&diagnostics)
 ---
 [
   {
     "check_name": "invalid-syntax",
     "description": "invalid-syntax: Expected one or more symbol names after import",
+    "severity": "major",
     "fingerprint": "<redacted>",
     "location": {
       "path": "syntax_errors.py",
       "positions": {
         "begin": {
-          "column": 15,
-          "line": 1
+          "line": 1,
+          "column": 15
         },
         "end": {
-          "column": 1,
-          "line": 2
+          "line": 2,
+          "column": 1
         }
       }
-    },
-    "severity": "major"
+    }
   },
   {
     "check_name": "invalid-syntax",
     "description": "invalid-syntax: Expected ')', found newline",
+    "severity": "major",
     "fingerprint": "<redacted>",
     "location": {
       "path": "syntax_errors.py",
       "positions": {
         "begin": {
-          "column": 12,
-          "line": 3
+          "line": 3,
+          "column": 12
         },
         "end": {
-          "column": 1,
-          "line": 4
+          "line": 4,
+          "column": 1
         }
       }
-    },
-    "severity": "major"
+    }
   }
 ]

crates/ruff_db/src/diagnostic/stylesheet.rs

@@ -40,12 +40,13 @@ pub struct DiagnosticStylesheet {
     pub(crate) help: Style,
     pub(crate) line_no: Style,
     pub(crate) emphasis: Style,
-    pub(crate) underline: Style,
     pub(crate) none: Style,
     pub(crate) separator: Style,
     pub(crate) secondary_code: Style,
     pub(crate) insertion: Style,
     pub(crate) deletion: Style,
+    pub(crate) insertion_line_no: Style,
+    pub(crate) deletion_line_no: Style,
 }
 
 impl Default for DiagnosticStylesheet {
@@ -66,12 +67,13 @@ impl DiagnosticStylesheet {
             help: AnsiColor::BrightCyan.on_default().effects(Effects::BOLD),
             line_no: bright_blue.effects(Effects::BOLD),
             emphasis: Style::new().effects(Effects::BOLD),
-            underline: Style::new().effects(Effects::UNDERLINE),
             none: Style::new(),
             separator: AnsiColor::Cyan.on_default(),
             secondary_code: AnsiColor::Red.on_default().effects(Effects::BOLD),
             insertion: AnsiColor::Green.on_default(),
             deletion: AnsiColor::Red.on_default(),
+            insertion_line_no: AnsiColor::Green.on_default().effects(Effects::BOLD),
+            deletion_line_no: AnsiColor::Red.on_default().effects(Effects::BOLD),
         }
     }
 
@@ -84,12 +86,13 @@ impl DiagnosticStylesheet {
             help: Style::new(),
             line_no: Style::new(),
             emphasis: Style::new(),
-            underline: Style::new(),
             none: Style::new(),
             separator: Style::new(),
             secondary_code: Style::new(),
             insertion: Style::new(),
             deletion: Style::new(),
+            insertion_line_no: Style::new(),
+            deletion_line_no: Style::new(),
         }
     }
 }

crates/ruff_db/src/files.rs

@@ -459,6 +459,12 @@ impl File {
         self.source_type(db).is_stub()
     }
 
+    /// Returns `true` if the file is an `__init__.py(i)`
+    pub fn is_init(self, db: &dyn Db) -> bool {
+        let path = self.path(db).as_str();
+        path.ends_with("__init__.py") || path.ends_with("__init__.pyi")
+    }
+
     pub fn source_type(self, db: &dyn Db) -> PySourceType {
         match self.path(db) {
             FilePath::System(path) => path

crates/ruff_formatter/src/lib.rs

@@ -81,14 +81,19 @@ impl IndentStyle {
     pub const fn is_space(&self) -> bool {
         matches!(self, IndentStyle::Space)
     }
+
+    /// Returns the string representation of the indent style.
+    pub const fn as_str(&self) -> &'static str {
+        match self {
+            IndentStyle::Tab => "tab",
+            IndentStyle::Space => "space",
+        }
+    }
 }
 
 impl std::fmt::Display for IndentStyle {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            IndentStyle::Tab => std::write!(f, "tab"),
-            IndentStyle::Space => std::write!(f, "space"),
-        }
+        f.write_str(self.as_str())
     }
 }
 

crates/ruff_formatter/src/printer/printer_options/mod.rs

@@ -139,4 +139,16 @@ impl LineEnding {
             LineEnding::CarriageReturn => "\r",
         }
     }
+
+    /// Returns the string used to configure this line ending.
+    ///
+    /// See [`LineEnding::as_str`] for the actual string representation of the line ending.
+    #[inline]
+    pub const fn as_setting_str(&self) -> &'static str {
+        match self {
+            LineEnding::LineFeed => "lf",
+            LineEnding::CarriageReturnLineFeed => "crlf",
+            LineEnding::CarriageReturn => "cr",
+        }
+    }
 }

crates/ruff_linter/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff_linter"
-version = "0.12.10"
+version = "0.13.0"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }
@@ -20,6 +20,7 @@ ruff_notebook = { workspace = true }
 ruff_macros = { workspace = true }
 ruff_python_ast = { workspace = true, features = ["serde", "cache"] }
 ruff_python_codegen = { workspace = true }
+ruff_python_importer = { workspace = true }
 ruff_python_index = { workspace = true }
 ruff_python_literal = { workspace = true }
 ruff_python_semantic = { workspace = true }
@@ -51,7 +52,6 @@ path-absolutize = { workspace = true, features = [
     "once_cell_cache",
     "use_unix_paths_on_wasm",
 ] }
-pathdiff = { workspace = true }
 pep440_rs = { workspace = true }
 pyproject-toml = { workspace = true }
 regex = { workspace = true }

crates/ruff_linter/resources/test/fixtures/airflow/AIR301_names.py

@@ -12,6 +12,7 @@ from airflow import (
 from airflow.api_connexion.security import requires_access
 from airflow.contrib.aws_athena_hook import AWSAthenaHook
 from airflow.datasets import DatasetAliasEvent
+from airflow.operators.postgres_operator import Mapping
 from airflow.operators.subdag import SubDagOperator
 from airflow.secrets.cache import SecretCache
 from airflow.secrets.local_filesystem import LocalFilesystemBackend
@@ -52,6 +53,8 @@ DatasetAliasEvent()
 # airflow.operators.subdag.*
 SubDagOperator()
 
+# airflow.operators.postgres_operator
+Mapping()
 
 # airflow.secrets
 # get_connection

crates/ruff_linter/resources/test/fixtures/airflow/AIR311_names.py

@@ -70,7 +70,40 @@ from airflow.timetables.datasets import DatasetOrTimeSchedule
 from airflow.utils.dag_parsing_context import get_parsing_context
 
 # airflow.timetables.datasets
-DatasetOrTimeSchedule()
+DatasetOrTimeSchedule(datasets=[])
 
 # airflow.utils.dag_parsing_context
 get_parsing_context()
+
+from airflow.decorators.base import (
+    DecoratedMappedOperator,
+    DecoratedOperator,
+    TaskDecorator,
+    get_unique_task_id,
+    task_decorator_factory,
+)
+
+# airflow.decorators.base
+DecoratedMappedOperator()
+DecoratedOperator()
+TaskDecorator()
+get_unique_task_id()
+task_decorator_factory()
+
+
+from airflow.models import Param
+
+# airflow.models
+Param()
+
+
+from airflow.sensors.base import (
+    BaseSensorOperator,
+    PokeReturnValue,
+    poke_mode_only,
+)
+
+# airflow.sensors.base
+BaseSensorOperator()
+PokeReturnValue()
+poke_mode_only()

crates/ruff_linter/resources/test/fixtures/airflow/AIR312.py

@@ -9,7 +9,6 @@ from airflow.operators.empty import EmptyOperator
 from airflow.operators.latest_only import LatestOnlyOperator
 from airflow.operators.trigger_dagrun import TriggerDagRunOperator
 from airflow.operators.weekday import BranchDayOfWeekOperator
-from airflow.sensors.date_time import DateTimeSensor
 
 FSHook()
 PackageIndexHook()
@@ -22,7 +21,6 @@ EmptyOperator()
 
 LatestOnlyOperator()
 BranchDayOfWeekOperator()
-DateTimeSensor()
 
 from airflow.operators.python import (
     BranchPythonOperator,
@@ -30,16 +28,23 @@ from airflow.operators.python import (
     PythonVirtualenvOperator,
     ShortCircuitOperator,
 )
+from airflow.sensors.bash import BashSensor
+from airflow.sensors.date_time import DateTimeSensor
+
+BranchPythonOperator()
+PythonOperator()
+PythonVirtualenvOperator()
+ShortCircuitOperator()
+
+BashSensor()
+DateTimeSensor()
 from airflow.sensors.date_time import DateTimeSensorAsync
 from airflow.sensors.external_task import (
     ExternalTaskMarker,
     ExternalTaskSensor,
 )
-from airflow.sensors.time_sensor import (
-    TimeSensor,
-    TimeSensorAsync,
-)
 from airflow.sensors.filesystem import FileSensor
+from airflow.sensors.python import PythonSensor
 
 BranchPythonOperator()
 PythonOperator()
@@ -49,6 +54,13 @@ DateTimeSensorAsync()
 ExternalTaskMarker()
 ExternalTaskSensor()
 FileSensor()
+PythonSensor()
+
+from airflow.sensors.time_sensor import (
+    TimeSensor,
+    TimeSensorAsync,
+)
+
 TimeSensor()
 TimeSensorAsync()
 

crates/ruff_linter/resources/test/fixtures/fastapi/FAST003.py

@@ -213,3 +213,17 @@ async def get_id_pydantic_full(
 async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
 @app.get("/{my_id}")
 async def get_id_init_not_annotated(params = Depends(InitParams)): ...
+
+@app.get("/things/{ thing_id }")
+async def read_thing(query: str):
+    return {"query": query}
+
+
+@app.get("/things/{ thing_id : path }")
+async def read_thing(query: str):
+    return {"query": query}
+
+
+@app.get("/things/{ thing_id : str }")
+async def read_thing(query: str):
+    return {"query": query}

crates/ruff_linter/resources/test/fixtures/flake8_async/ASYNC212.py

@@ -0,0 +1,75 @@
+from typing import Optional
+
+import httpx
+
+
+def foo():
+    client = httpx.Client()
+    client.close()  # Ok
+    client.delete()  # Ok
+    client.get()  # Ok
+    client.head()  # Ok
+    client.options()  # Ok
+    client.patch()  # Ok
+    client.post()  # Ok
+    client.put()  # Ok
+    client.request()  # Ok
+    client.send()  # Ok
+    client.stream()  # Ok
+
+    client.anything()  # Ok
+    client.build_request()  # Ok
+    client.is_closed  # Ok
+
+
+async def foo():
+    client = httpx.Client()
+    client.close()  # ASYNC212
+    client.delete()  # ASYNC212
+    client.get()  # ASYNC212
+    client.head()  # ASYNC212
+    client.options()  # ASYNC212
+    client.patch()  # ASYNC212
+    client.post()  # ASYNC212
+    client.put()  # ASYNC212
+    client.request()  # ASYNC212
+    client.send()  # ASYNC212
+    client.stream()  # ASYNC212
+
+    client.anything()  # Ok
+    client.build_request()  # Ok
+    client.is_closed  # Ok
+
+
+async def foo(client: httpx.Client):
+    client.request()  # ASYNC212
+    client.anything()  # Ok
+
+
+async def foo(client: httpx.Client | None):
+    client.request()  # ASYNC212
+    client.anything()  # Ok
+
+
+async def foo(client: Optional[httpx.Client]):
+    client.request()  # ASYNC212
+    client.anything()  # Ok
+
+
+async def foo():
+    client: httpx.Client = ...
+    client.request()  # ASYNC212
+    client.anything()  # Ok
+
+
+global_client = httpx.Client()
+
+
+async def foo():
+    global_client.request()  # ASYNC212
+    global_client.anything()  # Ok
+
+
+async def foo():
+    async with httpx.AsyncClient() as client:
+        await client.get()  # Ok

crates/ruff_linter/resources/test/fixtures/flake8_async/ASYNC250.py

@@ -0,0 +1,22 @@
+def foo():
+    k = input()  # Ok
+    input("hello world")  # Ok
+
+
+async def foo():
+    k = input()  # ASYNC250
+    input("hello world")  # ASYNC250
+
+
+import builtins
+
+import fake
+
+
+def foo():
+    builtins.input("testing")  # Ok
+
+
+async def foo():
+    builtins.input("testing")  # ASYNC250
+    fake.input("whatever")  # Ok

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S602.py

@@ -18,3 +18,18 @@ var_string = "true"
 Popen(var_string, shell=True)
 Popen([var_string], shell=True)
 Popen([var_string, ""], shell=True)
+
+# Check dict display with only double-starred expressions can be falsey.
+Popen("true", shell={**{}})
+Popen("true", shell={**{**{}}})
+
+# Check pattern with merged defaults/configs
+class ShellConfig:
+    def __init__(self):
+        self.shell_defaults = {}
+
+    def fetch_shell_config(self, username):
+        return {}
+
+    def run(self, username):
+        Popen("true", shell={**self.shell_defaults, **self.fetch_shell_config(username)})

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S604.py

@@ -3,3 +3,6 @@ def foo(shell):
 
 
 foo(shell=True)
+
+foo(shell={**{}})
+foo(shell={**{**{}}})

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S609.py

@@ -6,3 +6,6 @@ subprocess.Popen("/bin/chown root: *", shell=True)
 subprocess.Popen(["/usr/local/bin/rsync", "*", "some_where:"], shell=True)
 subprocess.Popen("/usr/local/bin/rsync * no_injection_here:")
 os.system("tar cf foo.tar bar/*")
+
+subprocess.Popen(["chmod", "+w", "*.py"], shell={**{}})
+subprocess.Popen(["chmod", "+w", "*.py"], shell={**{**{}}})

crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B004.py

@@ -39,3 +39,16 @@ hasattr(
     "__call__",  # comment 4
     # comment 5
 )
+
+import operator
+
+assert hasattr(operator, "__call__")
+assert callable(operator) is False
+
+
+class A:
+    def __init__(self): self.__call__ = None
+
+
+assert hasattr(A(), "__call__")
+assert callable(A()) is False

crates/ruff_linter/resources/test/fixtures/flake8_commas/COM81.py

@@ -663,4 +663,15 @@ class C[
 
 type X[T,] = T
 def f[T,](): pass
-class C[T,]: pass
+class C[T,]: pass
+
+# t-string examples
+kwargs.pop("remove", t"this {trailing_comma}",)
+kwargs.pop("remove", t"this {f"{trailing_comma}"}",)
+
+t"""This is a test. {
+    "Another sentence."
+    if True else
+    "Don't add a trailing comma here ->"
+}"""
+

crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C417.py

@@ -75,3 +75,7 @@ list(map(lambda x, y: x, [(1, 2), (3, 4)]))
 _ = t"{set(map(lambda x: x % 2 == 0, nums))}"
 _ = t"{dict(map(lambda v: (v, v**2), nums))}"
 
+
+# See https://github.com/astral-sh/ruff/issues/20198
+# No error: lambda contains `yield`, so map() should not be rewritten
+map(lambda x: (yield x), [1, 2, 3])

crates/ruff_linter/resources/test/fixtures/flake8_implicit_str_concat/ISC.py

@@ -187,3 +187,24 @@ _ = (
 		# leading comment
     "end"
 )
+
+# https://github.com/astral-sh/ruff/issues/20310
+# ISC001
+t"The quick " t"brown fox."
+
+# ISC002
+t"The quick brown fox jumps over the lazy "\
+t"dog."
+
+# ISC003
+(
+    t"The quick brown fox jumps over the lazy "
+    + t"dog"
+)
+
+# nested examples with both t and f-strings
+_ = "a" f"b {t"c" t"d"} e" "f"
+_ = t"b {f"c" f"d {t"e" t"f"} g"} h"
+_ = f"b {t"abc" \
+    t"def"} g"
+

crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004.py

@@ -17,3 +17,50 @@ info(f"{__name__}")
 # Don't trigger for t-strings
 info(t"{name}")
 info(t"{__name__}")
+
+count = 5
+total = 9
+directory_path = "/home/hamir/ruff/crates/ruff_linter/resources/test/"
+logging.info(f"{count} out of {total} files in {directory_path} checked")
+
+
+
+x = 99
+fmt = "08d"
+logger.info(f"{x:{'08d'}}")
+logger.info(f"{x:>10} {x:{fmt}}")
+
+logging.info(f"")
+logging.info(f"This message doesn't have any variables.")
+
+obj = {"key": "value"}
+logging.info(f"Object: {obj!r}")
+
+items_count = 3
+logging.warning(f"Items: {items_count:d}")
+
+data = {"status": "active"}
+logging.info(f"Processing {len(data)} items")
+logging.info(f"Status: {data.get('status', 'unknown').upper()}")
+
+
+result = 123
+logging.info(f"Calculated result: {result + 100}")
+
+temperature = 123
+logging.info(f"Temperature: {temperature:.1f}°C")
+
+class FilePath:
+    def __init__(self, name: str):
+        self.name = name
+
+logging.info(f"No changes made to {file_path.name}.")
+
+user = "tron"
+balance = 123.45
+logging.error(f"Error {404}: User {user} has insufficient balance ${balance:.2f}")
+
+import logging
+
+x = 1
+logging.error(f"{x} -> %s", x)

crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004_arg_order.py

@@ -0,0 +1,10 @@
+"""Test f-string argument order."""
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+X = 1
+Y = 2
+logger.error(f"{X} -> %s", Y)
+logger.error(f"{Y} -> %s", X)

crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT015.py

@@ -23,3 +23,11 @@ def test_error():
     assert list([])
     assert set(set())
     assert tuple("")
+
+# https://github.com/astral-sh/ruff/issues/19935
+def test_all_ok():
+    assert f"{b""}"
+    assert f"{""=}"
+    assert f"{""!a}"
+    assert f"{""!r}"
+    assert f"{"":1}"

crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM910.py

@@ -55,3 +55,30 @@ def foo(some_other):
 def foo():
     dict = {"Tom": 23, "Maria": 23, "Dog": 11}
     age = dict.get("Cat", None)
+
+
+# https://github.com/astral-sh/ruff/issues/20341
+# Method call as key
+ages = {"Tom": 23, "Maria": 23, "Dog": 11}
+key_source = {"Thomas": "Tom"}
+age = ages.get(key_source.get("Thomas", "Tom"), None)
+
+# Property access as key
+class Data:
+    def __init__(self):
+        self.name = "Tom"
+
+data = Data()
+ages = {"Tom": 23, "Maria": 23, "Dog": 11}
+age = ages.get(data.name, None)
+
+# Complex expression as key
+ages = {"Tom": 23, "Maria": 23, "Dog": 11}
+age = ages.get("Tom" if True else "Maria", None)
+
+# Function call as key
+def get_key():
+    return "Tom"
+
+ages = {"Tom": 23, "Maria": 23, "Dog": 11}
+age = ages.get(get_key(), None)

crates/ruff_linter/resources/test/fixtures/flake8_use_pathlib/PTH123.py

@@ -0,0 +1,24 @@
+import builtins
+from pathlib import Path
+
+_file = "file.txt"
+_x = ("r+", -1)
+r_plus = "r+"
+
+builtins.open(file=_file)
+
+open(_file, "r+ ", -  1)
+open(mode="wb", file=_file)
+open(mode="r+", buffering=-1, file=_file, encoding="utf-8")
+open(_file, "r+", - 1, None, None, None, True, None)
+open(_file, "r+", -1, None, None, None, closefd=True, opener=None)
+open(_file, mode="r+", buffering=-1, encoding=None, errors=None, newline=None)
+open(_file, f"  {r_plus}      ", -  1)
+open(buffering=-      1, file=_file, encoding=         "utf-8")
+
+# Only diagnostic
+open()
+open(_file, *_x)
+open(_file, "r+", unknown=True)
+open(_file, "r+", closefd=False)
+open(_file, "r+", None, None, None, None, None, None, None)

crates/ruff_linter/resources/test/fixtures/flake8_use_pathlib/import_from.py

@@ -62,4 +62,4 @@ rename(
 
 rename(file, "file_2.py", src_dir_fd=None, dst_dir_fd=None)
 
-rename(file, "file_2.py", src_dir_fd=1)
+rename(file, "file_2.py", src_dir_fd=1)

crates/ruff_linter/resources/test/fixtures/perflint/PERF403.py

@@ -192,3 +192,24 @@ def issue_19005_3():
     c = {}
     for a[0], a[1] in ():
         c[a[0]] = a[1]
+
+
+def issue_19153_1():
+    v = {}
+    for o, (x,) in ["ox"]:
+        v[x,] = o
+    return v
+
+
+def issue_19153_2():
+    v = {}
+    for (o, p), x in [("op", "x")]:
+        v[x] = o, p
+    return v
+
+
+def issue_19153_3():
+    v = {}
+    for o, (x,) in ["ox"]: 
+        v[(x,)] = o 
+    return v

crates/ruff_linter/resources/test/fixtures/pycodestyle/E30.py

@@ -974,3 +974,39 @@ BANANA = 100
 APPLE = 200
 
 # end
+
+
+# https://github.com/astral-sh/ruff/issues/19752
+class foo:
+    async def recv(self, *, length=65536):
+        loop = asyncio.get_event_loop()
+        def callback():
+            loop.remove_reader(self._fd)
+        loop.add_reader(self._fd, callback)
+# end
+
+
+# E301
+class Foo:
+    if True:
+        print("conditional")
+        def test():
+            pass
+# end
+
+
+# Test case for nested class scenario
+class Bar:
+    def f():
+        x = 1
+        def g():
+            return 1
+        return 2
+
+    def f():
+        class Baz:
+            x = 1
+            def g():
+                return 1
+            return 2
+# end

crates/ruff_linter/resources/test/fixtures/pycodestyle/E731.py

@@ -190,3 +190,12 @@ foo_tooltip = (
     more
 
 )
+
+# https://github.com/astral-sh/ruff/issues/20097
+def scope():
+    from collections.abc import Callable
+    from typing import ParamSpec
+
+    P = ParamSpec("P")
+    f1: Callable[P, str] = lambda x: str(x)
+    f2: Callable[..., str] = lambda x: str(x)

crates/ruff_linter/resources/test/fixtures/pyflakes/F401_35.py

@@ -0,0 +1,16 @@
+"""
+Test: allowed-unused-imports-top-level-module
+"""
+
+# No errors
+
+def f():
+    import hvplot
+def f():
+    import hvplot.pandas
+def f():
+    import hvplot.pandas.plots
+def f():
+    from hvplot.pandas import scatter_matrix
+def f():
+    from hvplot.pandas.plots import scatter_matrix

crates/ruff_linter/resources/test/fixtures/pyflakes/F841_0.py

@@ -151,3 +151,39 @@ def f():
         pass
     except Exception as _:
         pass
+
+
+# OK, `__class__` in this case is not the special `__class__` cell, so we don't
+# emit a diagnostic. (It has its own special semantics -- see
+# https://github.com/astral-sh/ruff/pull/20048#discussion_r2298338048 -- but
+# those aren't relevant here.)
+class A:
+    __class__ = 1
+
+
+# The following three cases are flagged because they declare local `__class__`
+# variables that don't refer to the special `__class__` cell.
+class A:
+    def set_class(self, cls):
+        __class__ = cls  # F841
+
+
+class A:
+    class B:
+        def set_class(self, cls):
+            __class__ = cls  # F841
+
+
+class A:
+    def foo():
+        class B:
+            print(__class__)
+            def set_class(self, cls):
+                __class__ = cls  # F841
+
+
+# OK, the `__class__` cell is nonlocal and declared as such.
+class NonlocalDunderClass:
+    def foo():
+        nonlocal __class__
+        __class__ = 1

crates/ruff_linter/resources/test/fixtures/pylint/bidirectional_unicode.py

@@ -4,6 +4,9 @@ print("שלום‬")
 # E2502
 example = "x‏" * 100  #    "‏x" is assigned
 
+# E2502
+another = "x؜" * 50  #    "؜x" is assigned
+
 # E2502
 if access_level != "none‮⁦":  # Check if admin ⁩⁦' and access_level != 'user
     print("You are an admin.")

crates/ruff_linter/resources/test/fixtures/pylint/nonlocal_without_binding.py

@@ -44,3 +44,8 @@ def f():
     def g():
         nonlocal x
         x = 2
+
+# OK
+class A:
+    def method(self):
+        nonlocal __class__

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP008.py

@@ -141,3 +141,133 @@ class ExampleWithKeywords:
     
     def method3(self):
         super(ExampleWithKeywords, self).some_method()  # Should be fixed - no keywords
+
+# See: https://github.com/astral-sh/ruff/issues/19357
+# Must be detected
+class ParentD:
+    def f(self):
+        print("D")
+
+class ChildD1(ParentD):
+    def f(self):
+        if False: __class__ # Python injects __class__ into scope
+        builtins.super(ChildD1, self).f()
+
+class ChildD2(ParentD):
+    def f(self):
+        if False: super # Python injects __class__ into scope
+        builtins.super(ChildD2, self).f()
+
+class ChildD3(ParentD):
+    def f(self):
+        builtins.super(ChildD3, self).f()
+        super # Python injects __class__ into scope
+
+import builtins as builtins_alias
+class ChildD4(ParentD):
+    def f(self):
+        builtins_alias.super(ChildD4, self).f()
+        super # Python injects __class__ into scope
+
+class ChildD5(ParentD):
+    def f(self):
+        super = 1
+        super # Python injects __class__ into scope
+        builtins.super(ChildD5, self).f()
+
+class ChildD6(ParentD):
+    def f(self):
+        super: "Any"
+        __class__ # Python injects __class__ into scope
+        builtins.super(ChildD6, self).f()
+
+class ChildD7(ParentD):
+    def f(self):
+        def x():
+            __class__ # Python injects __class__ into scope
+        builtins.super(ChildD7, self).f()
+
+class ChildD8(ParentD):
+    def f(self):
+        def x():
+            super = 1
+        super # Python injects __class__ into scope
+        builtins.super(ChildD8, self).f()
+
+class ChildD9(ParentD):
+    def f(self):
+        def x():
+            __class__ = 1
+        __class__ # Python injects __class__ into scope
+        builtins.super(ChildD9, self).f()
+
+class ChildD10(ParentD):
+    def f(self):
+        def x():
+            __class__ = 1
+        super # Python injects __class__ into scope
+        builtins.super(ChildD10, self).f()
+
+
+# Must be ignored
+class ParentI:
+    def f(self):
+        print("I")
+
+class ChildI1(ParentI):
+    def f(self):
+        builtins.super(ChildI1, self).f() # no __class__ in the local scope
+
+
+class ChildI2(ParentI):
+    def b(self):
+        x = __class__
+        if False: super
+
+    def f(self):
+        self.b()
+        builtins.super(ChildI2, self).f() # no __class__ in the local scope
+
+class ChildI3(ParentI):
+    def f(self):
+        if False: super
+        def x(_):
+            builtins.super(ChildI3, self).f() # no __class__ in the local scope
+        x(None)
+
+class ChildI4(ParentI):
+    def f(self):
+        super: "str"
+        builtins.super(ChildI4, self).f() # no __class__ in the local scope
+
+class ChildI5(ParentI):
+    def f(self):
+        super = 1
+        __class__ = 3
+        builtins.super(ChildI5, self).f() # no __class__ in the local scope
+
+class ChildI6(ParentI):
+    def f(self):
+        __class__ = None
+        __class__
+        builtins.super(ChildI6, self).f() # no __class__ in the local scope
+
+class ChildI7(ParentI):
+    def f(self):
+        __class__ = None
+        super
+        builtins.super(ChildI7, self).f()
+
+class ChildI8(ParentI):
+    def f(self):
+        __class__: "Any"
+        super
+        builtins.super(ChildI8, self).f()
+
+class ChildI9(ParentI):
+    def f(self):
+        class A:
+            def foo(self):
+                if False: super
+                if False: __class__
+        builtins.super(ChildI9, self).f()

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP043.pyi

@@ -0,0 +1,59 @@
+from collections.abc import Generator, AsyncGenerator
+
+
+def func() -> Generator[int, None, None]:
+    yield 42
+
+
+def func() -> Generator[int, None]:
+    yield 42
+
+
+def func() -> Generator[int]:
+    yield 42
+
+
+def func() -> Generator[int, int, int]:
+    foo = yield 42
+    return foo
+
+
+def func() -> Generator[int, int, None]:
+    _ = yield 42
+    return None
+
+
+def func() -> Generator[int, None, int]:
+    yield 42
+    return 42
+
+
+async def func() -> AsyncGenerator[int, None]:
+    yield 42
+
+
+async def func() -> AsyncGenerator[int]:
+    yield 42
+
+
+async def func() -> AsyncGenerator[int, int]:
+    foo = yield 42
+    return foo
+
+
+from typing import Generator, AsyncGenerator
+
+
+def func() -> Generator[str, None, None]:
+    yield "hello"
+
+
+async def func() -> AsyncGenerator[str, None]:
+    yield "hello"
+
+
+async def func() -> AsyncGenerator[  # type: ignore
+    str,
+    None
+]:
+    yield "hello"

crates/ruff_linter/resources/test/fixtures/ruff/RUF009.py

@@ -125,4 +125,13 @@ class D:
 
 @dataclass
 class E:
-    c: C = C()
+    c: C = C()
+
+# https://github.com/astral-sh/ruff/issues/20266
+@dataclass(frozen=True)
+class C:
+    @dataclass(frozen=True)
+    class D:
+        foo: int = 1
+
+    d: D = D() # OK

crates/ruff_linter/resources/test/fixtures/ruff/RUF016.py

@@ -113,3 +113,18 @@ var = bytearray(b"abc")["x"]
 x = "x"
 var = [1, 2, 3][0:x]
 var = [1, 2, 3][x:1]
+
+# https://github.com/astral-sh/ruff/issues/20204
+
+# Should not emit for boolean index and slice bounds
+var = [1, 2, 3][False]
+var = [1, 2, 3][False:True:True]
+
+# Should emit for invalid access using t-string
+var = [1, 2][t"x"]
+
+# Should emit for invalid access using lambda
+var = [1, 2, 3][lambda: 0]
+
+# Should emit for invalid access using generator
+var = [1, 2, 3][(x for x in ())]

crates/ruff_linter/resources/test/fixtures/ruff/RUF033.py

@@ -124,3 +124,19 @@ def fun_with_python_syntax():
             ...
 
     return Foo
+
+
+@dataclass
+class C:
+    def __post_init__(self, x: tuple[int, ...] = (
+        1,
+        2,
+    )) -> None:
+        self.x = x
+
+
+@dataclass
+class D:
+    def __post_init__(self, x: int = """
+    """) -> None:
+        self.x = x

crates/ruff_linter/resources/test/fixtures/ruff/RUF037.py

@@ -107,3 +107,12 @@ deque(f"{x}" "")  # OK
 deque(t"")
 deque(t""  t"")
 deque(t"{""}") # OK
+
+# https://github.com/astral-sh/ruff/issues/20050
+deque(f"{""}")  # RUF037
+
+deque(f"{b""}")
+deque(f"{""=}")
+deque(f"{""!a}")
+deque(f"{""!r}")
+deque(f"{"":1}")

crates/ruff_linter/resources/test/fixtures/ruff/RUF060.py

@@ -42,3 +42,7 @@ b"a" in bytes("a", "utf-8")
 1 in set(set([1]))
 '' in {""}
 frozenset() in {frozenset()}
+
+# https://github.com/astral-sh/ruff/issues/20238
+"b" in f"" "" # Error
+"b" in f"" "x" # OK

crates/ruff_linter/resources/test/fixtures/ruff/RUF102.py

@@ -16,3 +16,5 @@ from collections import defaultdict  # noqa: INVALID100, INVALID200, F401
 from itertools import chain  # noqa: E402, INVALID300, F401
 # Test for mixed code types
 import json  # noqa: E402, INVALID400, V100
+# Test for rule redirects
+import pandas as pd  # noqa: TCH002

crates/ruff_linter/resources/test/fixtures/syntax_errors/yield_from_in_async_function.py

@@ -0,0 +1 @@
+async def f(): yield from x # error

crates/ruff_linter/src/checkers/ast/analyze/deferred_scopes.rs

@@ -134,7 +134,7 @@ pub(crate) fn deferred_scopes(checker: &Checker) {
                 );
             }
             if checker.is_rule_enabled(Rule::FunctionCallInDataclassDefaultArgument) {
-                ruff::rules::function_call_in_dataclass_default(checker, class_def);
+                ruff::rules::function_call_in_dataclass_default(checker, class_def, scope_id);
             }
             if checker.is_rule_enabled(Rule::MutableClassDefault) {
                 ruff::rules::mutable_class_default(checker, class_def);

crates/ruff_linter/src/checkers/ast/analyze/expression.rs

@@ -8,7 +8,7 @@ use ruff_text_size::Ranged;
 
 use crate::checkers::ast::Checker;
 use crate::preview::{
-    is_assert_raises_exception_call_enabled, is_optional_as_none_in_union_enabled,
+    is_optional_as_none_in_union_enabled, is_unnecessary_default_type_args_stubs_enabled,
 };
 use crate::registry::Rule;
 use crate::rules::{
@@ -142,7 +142,10 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
             }
 
             if checker.is_rule_enabled(Rule::UnnecessaryDefaultTypeArgs) {
-                if checker.target_version() >= PythonVersion::PY313 {
+                if checker.target_version() >= PythonVersion::PY313
+                    || is_unnecessary_default_type_args_stubs_enabled(checker.settings())
+                        && checker.semantic().in_stub_file()
+                {
                     pyupgrade::rules::unnecessary_default_type_args(checker, expr);
                 }
             }
@@ -660,6 +663,9 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
             if checker.is_rule_enabled(Rule::BlockingHttpCallInAsyncFunction) {
                 flake8_async::rules::blocking_http_call(checker, call);
             }
+            if checker.is_rule_enabled(Rule::BlockingHttpCallHttpxInAsyncFunction) {
+                flake8_async::rules::blocking_http_call_httpx(checker, call);
+            }
             if checker.is_rule_enabled(Rule::BlockingOpenCallInAsyncFunction) {
                 flake8_async::rules::blocking_open_call(checker, call);
             }
@@ -670,6 +676,9 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
             ]) {
                 flake8_async::rules::blocking_process_invocation(checker, call);
             }
+            if checker.is_rule_enabled(Rule::BlockingInputInAsyncFunction) {
+                flake8_async::rules::blocking_input(checker, call);
+            }
             if checker.is_rule_enabled(Rule::BlockingSleepInAsyncFunction) {
                 flake8_async::rules::blocking_sleep(checker, call);
             }
@@ -1042,11 +1051,9 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                 Rule::OsStat,
                 Rule::OsPathJoin,
                 Rule::OsPathSplitext,
-                Rule::BuiltinOpen,
                 Rule::PyPath,
                 Rule::Glob,
                 Rule::OsListdir,
-                Rule::OsSymlink,
             ]) {
                 flake8_use_pathlib::rules::replaceable_by_pathlib(checker, call);
             }
@@ -1127,6 +1134,9 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                 if checker.is_rule_enabled(Rule::OsSymlink) {
                     flake8_use_pathlib::rules::os_symlink(checker, call, segments);
                 }
+                if checker.is_rule_enabled(Rule::BuiltinOpen) {
+                    flake8_use_pathlib::rules::builtin_open(checker, call, segments);
+                }
                 if checker.is_rule_enabled(Rule::PathConstructorCurrentDirectory) {
                     flake8_use_pathlib::rules::path_constructor_current_directory(
                         checker, call, segments,
@@ -1287,9 +1297,7 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
             if checker.is_rule_enabled(Rule::NonOctalPermissions) {
                 ruff::rules::non_octal_permissions(checker, call);
             }
-            if checker.is_rule_enabled(Rule::AssertRaisesException)
-                && is_assert_raises_exception_call_enabled(checker.settings())
-            {
+            if checker.is_rule_enabled(Rule::AssertRaisesException) {
                 flake8_bugbear::rules::assert_raises_exception_call(checker, call);
             }
         }
@@ -1314,13 +1322,10 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                 pylint::rules::yield_in_init(checker, expr);
             }
         }
-        Expr::YieldFrom(yield_from) => {
+        Expr::YieldFrom(_) => {
             if checker.is_rule_enabled(Rule::YieldInInit) {
                 pylint::rules::yield_in_init(checker, expr);
             }
-            if checker.is_rule_enabled(Rule::YieldFromInAsyncFunction) {
-                pylint::rules::yield_from_in_async_function(checker, yield_from);
-            }
         }
         Expr::FString(f_string_expr @ ast::ExprFString { value, .. }) => {
             if checker.is_rule_enabled(Rule::FStringMissingPlaceholders) {

crates/ruff_linter/src/checkers/ast/analyze/statement.rs

@@ -1,7 +1,6 @@
 use ruff_python_ast::helpers;
 use ruff_python_ast::types::Node;
 use ruff_python_ast::{self as ast, Expr, Stmt};
-use ruff_python_semantic::ScopeKind;
 use ruff_text_size::Ranged;
 
 use crate::checkers::ast::Checker;
@@ -809,17 +808,6 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) {
                         pyflakes::rules::future_feature_not_defined(checker, alias);
                     }
                 } else if &alias.name == "*" {
-                    // F406
-                    if checker.is_rule_enabled(Rule::UndefinedLocalWithNestedImportStarUsage) {
-                        if !matches!(checker.semantic.current_scope().kind, ScopeKind::Module) {
-                            checker.report_diagnostic(
-                                pyflakes::rules::UndefinedLocalWithNestedImportStarUsage {
-                                    name: helpers::format_import_from(level, module).to_string(),
-                                },
-                                stmt.range(),
-                            );
-                        }
-                    }
                     // F403
                     checker.report_diagnostic_if_enabled(
                         pyflakes::rules::UndefinedLocalWithImportStar {

crates/ruff_linter/src/checkers/ast/analyze/unresolved_references.rs

@@ -13,7 +13,7 @@ pub(crate) fn unresolved_references(checker: &Checker) {
 
     for reference in checker.semantic.unresolved_references() {
         if reference.is_wildcard_import() {
-            // F406
+            // F405
             checker.report_diagnostic_if_enabled(
                 pyflakes::rules::UndefinedLocalWithImportStarUsage {
                     name: reference.name(checker.source()).to_string(),

crates/ruff_linter/src/checkers/ast/mod.rs

@@ -69,9 +69,12 @@ use crate::package::PackageRoot;
 use crate::preview::is_undefined_export_in_dunder_init_enabled;
 use crate::registry::Rule;
 use crate::rules::pyflakes::rules::{
-    LateFutureImport, ReturnOutsideFunction, YieldOutsideFunction,
+    LateFutureImport, ReturnOutsideFunction, UndefinedLocalWithNestedImportStarUsage,
+    YieldOutsideFunction,
+};
+use crate::rules::pylint::rules::{
+    AwaitOutsideAsync, LoadBeforeGlobalDeclaration, YieldFromInAsyncFunction,
 };
-use crate::rules::pylint::rules::{AwaitOutsideAsync, LoadBeforeGlobalDeclaration};
 use crate::rules::{flake8_pyi, flake8_type_checking, pyflakes, pyupgrade};
 use crate::settings::rule_table::RuleTable;
 use crate::settings::{LinterSettings, TargetVersion, flags};
@@ -274,7 +277,7 @@ impl<'a> Checker<'a> {
             locator,
             stylist,
             indexer,
-            importer: Importer::new(parsed, locator, stylist),
+            importer: Importer::new(parsed, locator.contents(), stylist),
             semantic,
             visit: deferred::Visit::default(),
             analyze: deferred::Analyze::default(),
@@ -657,6 +660,14 @@ impl SemanticSyntaxContext for Checker<'_> {
                     self.report_diagnostic(YieldOutsideFunction::new(kind), error.range);
                 }
             }
+            SemanticSyntaxErrorKind::NonModuleImportStar(name) => {
+                if self.is_rule_enabled(Rule::UndefinedLocalWithNestedImportStarUsage) {
+                    self.report_diagnostic(
+                        UndefinedLocalWithNestedImportStarUsage { name },
+                        error.range,
+                    );
+                }
+            }
             SemanticSyntaxErrorKind::ReturnOutsideFunction => {
                 // F706
                 if self.is_rule_enabled(Rule::ReturnOutsideFunction) {
@@ -668,6 +679,12 @@ impl SemanticSyntaxContext for Checker<'_> {
                     self.report_diagnostic(AwaitOutsideAsync, error.range);
                 }
             }
+            SemanticSyntaxErrorKind::YieldFromInAsyncFunction => {
+                // PLE1700
+                if self.is_rule_enabled(Rule::YieldFromInAsyncFunction) {
+                    self.report_diagnostic(YieldFromInAsyncFunction, error.range);
+                }
+            }
             SemanticSyntaxErrorKind::ReboundComprehensionVariable
             | SemanticSyntaxErrorKind::DuplicateTypeParameter
             | SemanticSyntaxErrorKind::MultipleCaseAssignment(_)
@@ -703,7 +720,10 @@ impl SemanticSyntaxContext for Checker<'_> {
             match scope.kind {
                 ScopeKind::Class(_) | ScopeKind::Lambda(_) => return false,
                 ScopeKind::Function(ast::StmtFunctionDef { is_async, .. }) => return *is_async,
-                ScopeKind::Generator { .. } | ScopeKind::Module | ScopeKind::Type => {}
+                ScopeKind::Generator { .. }
+                | ScopeKind::Module
+                | ScopeKind::Type
+                | ScopeKind::DunderClassCell => {}
             }
         }
         false
@@ -714,7 +734,10 @@ impl SemanticSyntaxContext for Checker<'_> {
             match scope.kind {
                 ScopeKind::Class(_) => return false,
                 ScopeKind::Function(_) | ScopeKind::Lambda(_) => return true,
-                ScopeKind::Generator { .. } | ScopeKind::Module | ScopeKind::Type => {}
+                ScopeKind::Generator { .. }
+                | ScopeKind::Module
+                | ScopeKind::Type
+                | ScopeKind::DunderClassCell => {}
             }
         }
         false
@@ -725,7 +748,7 @@ impl SemanticSyntaxContext for Checker<'_> {
             match scope.kind {
                 ScopeKind::Class(_) | ScopeKind::Generator { .. } => return false,
                 ScopeKind::Function(_) | ScopeKind::Lambda(_) => return true,
-                ScopeKind::Module | ScopeKind::Type => {}
+                ScopeKind::Module | ScopeKind::Type | ScopeKind::DunderClassCell => {}
             }
         }
         false
@@ -1092,6 +1115,24 @@ impl<'a> Visitor<'a> for Checker<'a> {
                     }
                 }
 
+                // Here we add the implicit scope surrounding a method which allows code in the
+                // method to access `__class__` at runtime. See the `ScopeKind::DunderClassCell`
+                // docs for more information.
+                let added_dunder_class_scope = if self.semantic.current_scope().kind.is_class() {
+                    self.semantic.push_scope(ScopeKind::DunderClassCell);
+                    let binding_id = self.semantic.push_binding(
+                        TextRange::default(),
+                        BindingKind::DunderClassCell,
+                        BindingFlags::empty(),
+                    );
+                    self.semantic
+                        .current_scope_mut()
+                        .add("__class__", binding_id);
+                    true
+                } else {
+                    false
+                };
+
                 self.semantic.push_scope(ScopeKind::Type);
 
                 if let Some(type_params) = type_params {
@@ -1155,6 +1196,9 @@ impl<'a> Visitor<'a> for Checker<'a> {
                 self.semantic.pop_scope(); // Function scope
                 self.semantic.pop_definition();
                 self.semantic.pop_scope(); // Type parameter scope
+                if added_dunder_class_scope {
+                    self.semantic.pop_scope(); // `__class__` cell closure scope
+                }
                 self.add_binding(
                     name,
                     stmt.identifier(),
@@ -3231,6 +3275,11 @@ impl<'a> LintContext<'a> {
     pub(crate) const fn settings(&self) -> &LinterSettings {
         self.settings
     }
+
+    #[cfg(any(feature = "test-rules", test))]
+    pub(crate) const fn source_file(&self) -> &SourceFile {
+        &self.source_file
+    }
 }
 
 /// An abstraction for mutating a diagnostic.

crates/ruff_linter/src/checkers/noqa.rs

@@ -6,7 +6,7 @@ use itertools::Itertools;
 use rustc_hash::FxHashSet;
 
 use ruff_python_trivia::CommentRanges;
-use ruff_text_size::Ranged;
+use ruff_text_size::{Ranged, TextRange};
 
 use crate::fix::edits::delete_comment;
 use crate::noqa::{
@@ -68,7 +68,7 @@ pub(crate) fn check_noqa(
         let noqa_offsets = diagnostic
             .parent()
             .into_iter()
-            .chain(std::iter::once(diagnostic.expect_range().start()))
+            .chain(diagnostic.range().map(TextRange::start).into_iter())
             .map(|position| noqa_line_for.resolve(position))
             .unique();
 

crates/ruff_linter/src/codes.rs

@@ -334,12 +334,14 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8Async, "109") => (RuleGroup::Stable, rules::flake8_async::rules::AsyncFunctionWithTimeout),
         (Flake8Async, "110") => (RuleGroup::Stable, rules::flake8_async::rules::AsyncBusyWait),
         (Flake8Async, "115") => (RuleGroup::Stable, rules::flake8_async::rules::AsyncZeroSleep),
-        (Flake8Async, "116") => (RuleGroup::Preview, rules::flake8_async::rules::LongSleepNotForever),
+        (Flake8Async, "116") => (RuleGroup::Stable, rules::flake8_async::rules::LongSleepNotForever),
         (Flake8Async, "210") => (RuleGroup::Stable, rules::flake8_async::rules::BlockingHttpCallInAsyncFunction),
+        (Flake8Async, "212") => (RuleGroup::Preview, rules::flake8_async::rules::BlockingHttpCallHttpxInAsyncFunction),
         (Flake8Async, "220") => (RuleGroup::Stable, rules::flake8_async::rules::CreateSubprocessInAsyncFunction),
         (Flake8Async, "221") => (RuleGroup::Stable, rules::flake8_async::rules::RunProcessInAsyncFunction),
         (Flake8Async, "222") => (RuleGroup::Stable, rules::flake8_async::rules::WaitForProcessInAsyncFunction),
         (Flake8Async, "230") => (RuleGroup::Stable, rules::flake8_async::rules::BlockingOpenCallInAsyncFunction),
+        (Flake8Async, "250") => (RuleGroup::Preview, rules::flake8_async::rules::BlockingInputInAsyncFunction),
         (Flake8Async, "251") => (RuleGroup::Stable, rules::flake8_async::rules::BlockingSleepInAsyncFunction),
 
         // flake8-builtins
@@ -561,7 +563,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Pyupgrade, "035") => (RuleGroup::Stable, rules::pyupgrade::rules::DeprecatedImport),
         (Pyupgrade, "036") => (RuleGroup::Stable, rules::pyupgrade::rules::OutdatedVersionBlock),
         (Pyupgrade, "037") => (RuleGroup::Stable, rules::pyupgrade::rules::QuotedAnnotation),
-        (Pyupgrade, "038") => (RuleGroup::Deprecated, rules::pyupgrade::rules::NonPEP604Isinstance),
+        (Pyupgrade, "038") => (RuleGroup::Removed, rules::pyupgrade::rules::NonPEP604Isinstance),
         (Pyupgrade, "039") => (RuleGroup::Stable, rules::pyupgrade::rules::UnnecessaryClassParentheses),
         (Pyupgrade, "040") => (RuleGroup::Stable, rules::pyupgrade::rules::NonPEP695TypeAlias),
         (Pyupgrade, "041") => (RuleGroup::Stable, rules::pyupgrade::rules::TimeoutErrorAlias),
@@ -572,7 +574,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Pyupgrade, "046") => (RuleGroup::Stable, rules::pyupgrade::rules::NonPEP695GenericClass),
         (Pyupgrade, "047") => (RuleGroup::Stable, rules::pyupgrade::rules::NonPEP695GenericFunction),
         (Pyupgrade, "049") => (RuleGroup::Stable, rules::pyupgrade::rules::PrivateTypeParameter),
-        (Pyupgrade, "050") => (RuleGroup::Preview, rules::pyupgrade::rules::UselessClassMetaclassType),
+        (Pyupgrade, "050") => (RuleGroup::Stable, rules::pyupgrade::rules::UselessClassMetaclassType),
 
         // pydocstyle
         (Pydocstyle, "100") => (RuleGroup::Stable, rules::pydocstyle::rules::UndocumentedPublicModule),
@@ -771,7 +773,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (PandasVet, "013") => (RuleGroup::Stable, rules::pandas_vet::rules::PandasUseOfDotStack),
         (PandasVet, "015") => (RuleGroup::Stable, rules::pandas_vet::rules::PandasUseOfPdMerge),
         (PandasVet, "101") => (RuleGroup::Stable, rules::pandas_vet::rules::PandasNuniqueConstantSeriesCheck),
-        (PandasVet, "901") => (RuleGroup::Deprecated, rules::pandas_vet::rules::PandasDfVariableName),
+        (PandasVet, "901") => (RuleGroup::Removed, rules::pandas_vet::rules::PandasDfVariableName),
 
         // flake8-errmsg
         (Flake8ErrMsg, "101") => (RuleGroup::Stable, rules::flake8_errmsg::rules::RawStringInException),
@@ -828,8 +830,8 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8Pyi, "056") => (RuleGroup::Stable, rules::flake8_pyi::rules::UnsupportedMethodCallOnAll),
         (Flake8Pyi, "058") => (RuleGroup::Stable, rules::flake8_pyi::rules::GeneratorReturnFromIterMethod),
         (Flake8Pyi, "057") => (RuleGroup::Stable, rules::flake8_pyi::rules::ByteStringUsage),
-        (Flake8Pyi, "059") => (RuleGroup::Preview, rules::flake8_pyi::rules::GenericNotLastBaseClass),
-        (Flake8Pyi, "061") => (RuleGroup::Preview, rules::flake8_pyi::rules::RedundantNoneLiteral),
+        (Flake8Pyi, "059") => (RuleGroup::Stable, rules::flake8_pyi::rules::GenericNotLastBaseClass),
+        (Flake8Pyi, "061") => (RuleGroup::Stable, rules::flake8_pyi::rules::RedundantNoneLiteral),
         (Flake8Pyi, "062") => (RuleGroup::Stable, rules::flake8_pyi::rules::DuplicateLiteralMember),
         (Flake8Pyi, "063") => (RuleGroup::Stable, rules::flake8_pyi::rules::Pep484StylePositionalOnlyParameter),
         (Flake8Pyi, "064") => (RuleGroup::Stable, rules::flake8_pyi::rules::RedundantFinalLiteral),
@@ -942,7 +944,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8UsePathlib, "120") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsPathDirname),
         (Flake8UsePathlib, "121") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsPathSamefile),
         (Flake8UsePathlib, "122") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::OsPathSplitext),
-        (Flake8UsePathlib, "123") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::BuiltinOpen),
+        (Flake8UsePathlib, "123") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::BuiltinOpen),
         (Flake8UsePathlib, "124") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::PyPath),
         (Flake8UsePathlib, "201") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::PathConstructorCurrentDirectory),
         (Flake8UsePathlib, "202") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsPathGetsize),
@@ -954,7 +956,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8UsePathlib, "207") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::Glob),
         (Flake8UsePathlib, "208") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::OsListdir),
         (Flake8UsePathlib, "210") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::InvalidPathlibWithSuffix),
-        (Flake8UsePathlib, "211") => (RuleGroup::Preview, rules::flake8_use_pathlib::rules::OsSymlink),
+        (Flake8UsePathlib, "211") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsSymlink),
 
         // flake8-logging-format
         (Flake8LoggingFormat, "001") => (RuleGroup::Stable, rules::flake8_logging_format::violations::LoggingStringFormat),
@@ -1030,7 +1032,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Ruff, "039") => (RuleGroup::Preview, rules::ruff::rules::UnrawRePattern),
         (Ruff, "040") => (RuleGroup::Stable, rules::ruff::rules::InvalidAssertMessageLiteralArgument),
         (Ruff, "041") => (RuleGroup::Stable, rules::ruff::rules::UnnecessaryNestedLiteral),
-        (Ruff, "043") => (RuleGroup::Preview, rules::ruff::rules::PytestRaisesAmbiguousPattern),
+        (Ruff, "043") => (RuleGroup::Stable, rules::ruff::rules::PytestRaisesAmbiguousPattern),
         (Ruff, "045") => (RuleGroup::Preview, rules::ruff::rules::ImplicitClassVarInDataclass),
         (Ruff, "046") => (RuleGroup::Stable, rules::ruff::rules::UnnecessaryCastToInt),
         (Ruff, "047") => (RuleGroup::Preview, rules::ruff::rules::NeedlessElse),
@@ -1044,7 +1046,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Ruff, "056") => (RuleGroup::Preview, rules::ruff::rules::FalsyDictGetFallback),
         (Ruff, "057") => (RuleGroup::Stable, rules::ruff::rules::UnnecessaryRound),
         (Ruff, "058") => (RuleGroup::Stable, rules::ruff::rules::StarmapZip),
-        (Ruff, "059") => (RuleGroup::Preview, rules::ruff::rules::UnusedUnpackedVariable),
+        (Ruff, "059") => (RuleGroup::Stable, rules::ruff::rules::UnusedUnpackedVariable),
         (Ruff, "060") => (RuleGroup::Preview, rules::ruff::rules::InEmptyCollection),
         (Ruff, "061") => (RuleGroup::Preview, rules::ruff::rules::LegacyFormPytestRaises),
         (Ruff, "063") => (RuleGroup::Preview, rules::ruff::rules::AccessAnnotationsFromClassDict),
@@ -1078,6 +1080,8 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Ruff, "950") => (RuleGroup::Stable, rules::ruff::rules::RedirectedToTestRule),
         #[cfg(any(feature = "test-rules", test))]
         (Ruff, "960") => (RuleGroup::Removed, rules::ruff::rules::RedirectedFromPrefixTestRule),
+        #[cfg(any(feature = "test-rules", test))]
+        (Ruff, "990") => (RuleGroup::Preview, rules::ruff::rules::PanicyTestRule),
 
 
         // flake8-django
@@ -1104,11 +1108,11 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
 
         // airflow
         (Airflow, "001") => (RuleGroup::Stable, rules::airflow::rules::AirflowVariableNameTaskIdMismatch),
-        (Airflow, "002") => (RuleGroup::Preview, rules::airflow::rules::AirflowDagNoScheduleArgument),
-        (Airflow, "301") => (RuleGroup::Preview, rules::airflow::rules::Airflow3Removal),
-        (Airflow, "302") => (RuleGroup::Preview, rules::airflow::rules::Airflow3MovedToProvider),
-        (Airflow, "311") => (RuleGroup::Preview, rules::airflow::rules::Airflow3SuggestedUpdate),
-        (Airflow, "312") => (RuleGroup::Preview, rules::airflow::rules::Airflow3SuggestedToMoveToProvider),
+        (Airflow, "002") => (RuleGroup::Stable, rules::airflow::rules::AirflowDagNoScheduleArgument),
+        (Airflow, "301") => (RuleGroup::Stable, rules::airflow::rules::Airflow3Removal),
+        (Airflow, "302") => (RuleGroup::Stable, rules::airflow::rules::Airflow3MovedToProvider),
+        (Airflow, "311") => (RuleGroup::Stable, rules::airflow::rules::Airflow3SuggestedUpdate),
+        (Airflow, "312") => (RuleGroup::Stable, rules::airflow::rules::Airflow3SuggestedToMoveToProvider),
 
         // perflint
         (Perflint, "101") => (RuleGroup::Stable, rules::perflint::rules::UnnecessaryListCast),
@@ -1135,7 +1139,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Refurb, "105") => (RuleGroup::Stable, rules::refurb::rules::PrintEmptyString),
         (Refurb, "110") => (RuleGroup::Preview, rules::refurb::rules::IfExpInsteadOfOrOperator),
         (Refurb, "113") => (RuleGroup::Preview, rules::refurb::rules::RepeatedAppend),
-        (Refurb, "116") => (RuleGroup::Preview, rules::refurb::rules::FStringNumberFormat),
+        (Refurb, "116") => (RuleGroup::Stable, rules::refurb::rules::FStringNumberFormat),
         (Refurb, "118") => (RuleGroup::Preview, rules::refurb::rules::ReimplementedOperator),
         (Refurb, "122") => (RuleGroup::Stable, rules::refurb::rules::ForLoopWrites),
         (Refurb, "129") => (RuleGroup::Stable, rules::refurb::rules::ReadlinesInFor),

crates/ruff_linter/src/directives.rs

@@ -125,26 +125,27 @@ fn extract_noqa_line_for(tokens: &Tokens, locator: &Locator, indexer: &Indexer)
     }
 
     // The capacity allocated here might be more than we need if there are
-    // nested f-strings.
-    let mut fstring_mappings = Vec::with_capacity(indexer.fstring_ranges().len());
+    // nested interpolated strings.
+    let mut interpolated_string_mappings =
+        Vec::with_capacity(indexer.interpolated_string_ranges().len());
 
-    // For nested f-strings, we expect `noqa` directives on the last line of the
-    // outermost f-string. The last f-string range will be used to skip over
-    // the inner f-strings.
-    let mut last_fstring_range: TextRange = TextRange::default();
-    for fstring_range in indexer.fstring_ranges().values() {
-        if !locator.contains_line_break(*fstring_range) {
+    // For nested interpolated strings, we expect `noqa` directives on the last line of the
+    // outermost interpolated string. The last interpolated string range will be used to skip over
+    // the inner interpolated strings.
+    let mut last_interpolated_string_range: TextRange = TextRange::default();
+    for interpolated_string_range in indexer.interpolated_string_ranges().values() {
+        if !locator.contains_line_break(*interpolated_string_range) {
             continue;
         }
-        if last_fstring_range.contains_range(*fstring_range) {
+        if last_interpolated_string_range.contains_range(*interpolated_string_range) {
             continue;
         }
         let new_range = TextRange::new(
-            locator.line_start(fstring_range.start()),
-            fstring_range.end(),
+            locator.line_start(interpolated_string_range.start()),
+            interpolated_string_range.end(),
         );
-        fstring_mappings.push(new_range);
-        last_fstring_range = new_range;
+        interpolated_string_mappings.push(new_range);
+        last_interpolated_string_range = new_range;
     }
 
     let mut continuation_mappings = Vec::new();
@@ -172,11 +173,11 @@ fn extract_noqa_line_for(tokens: &Tokens, locator: &Locator, indexer: &Indexer)
 
     // Merge the mappings in sorted order
     let mut mappings = NoqaMapping::with_capacity(
-        continuation_mappings.len() + string_mappings.len() + fstring_mappings.len(),
+        continuation_mappings.len() + string_mappings.len() + interpolated_string_mappings.len(),
     );
 
     let string_mappings = SortedMergeIter {
-        left: fstring_mappings.into_iter().peekable(),
+        left: interpolated_string_mappings.into_iter().peekable(),
         right: string_mappings.into_iter().peekable(),
     };
     let all_mappings = SortedMergeIter {
@@ -497,12 +498,35 @@ end'''
             NoqaMapping::from_iter([TextRange::new(TextSize::from(6), TextSize::from(70))])
         );
 
+        let contents = "x = 1
+y = t'''abc
+def {f'''nested
+interpolated string''' f'another nested'}
+end'''
+";
+        assert_eq!(
+            noqa_mappings(contents),
+            NoqaMapping::from_iter([TextRange::new(TextSize::from(6), TextSize::from(82))])
+        );
+
         let contents = "x = 1
 y = f'normal'
 z = f'another but {f'nested but {f'still single line'} nested'}'
 ";
         assert_eq!(noqa_mappings(contents), NoqaMapping::default());
 
+        let contents = "x = 1
+y = t'normal'
+z = t'another but {t'nested but {t'still single line'} nested'}'
+";
+        assert_eq!(noqa_mappings(contents), NoqaMapping::default());
+
+        let contents = "x = 1
+y = f'normal'
+z = f'another but {t'nested but {f'still single line'} nested'}'
+";
+        assert_eq!(noqa_mappings(contents), NoqaMapping::default());
+
         let contents = r"x = \
     1";
         assert_eq!(

crates/ruff_linter/src/fix/codemods.rs

@@ -14,6 +14,7 @@ use unicode_normalization::UnicodeNormalization;
 use ruff_python_ast::Stmt;
 use ruff_python_ast::name::UnqualifiedName;
 use ruff_python_codegen::Stylist;
+use ruff_text_size::Ranged;
 
 use crate::Locator;
 use crate::cst::matchers::match_statement;
@@ -127,10 +128,10 @@ pub(crate) fn remove_imports<'a>(
 pub(crate) fn retain_imports(
     member_names: &[&str],
     stmt: &Stmt,
-    locator: &Locator,
+    contents: &str,
     stylist: &Stylist,
 ) -> Result<String> {
-    let module_text = locator.slice(stmt);
+    let module_text = &contents[stmt.range()];
     let mut tree = match_statement(module_text)?;
 
     let Statement::Simple(body) = &mut tree else {

crates/ruff_linter/src/fix/edits.rs

@@ -370,8 +370,8 @@ pub(crate) fn adjust_indentation(
 
     // If the range includes a multi-line string, use LibCST to ensure that we don't adjust the
     // whitespace _within_ the string.
-    let contains_multiline_string =
-        indexer.multiline_ranges().intersects(range) || indexer.fstring_ranges().intersects(range);
+    let contains_multiline_string = indexer.multiline_ranges().intersects(range)
+        || indexer.interpolated_string_ranges().intersects(range);
 
     // If the range has mixed indentation, we will use LibCST as well.
     let mixed_indentation = contents.universal_newlines().any(|line| {

crates/ruff_linter/src/fs.rs

@@ -58,13 +58,3 @@ pub fn relativize_path<P: AsRef<Path>>(path: P) -> String {
     }
     format!("{}", path.display())
 }
-
-/// Convert an absolute path to be relative to the specified project root.
-pub fn relativize_path_to<P: AsRef<Path>, R: AsRef<Path>>(path: P, project_root: R) -> String {
-    format!(
-        "{}",
-        pathdiff::diff_paths(&path, project_root)
-            .expect("Could not diff paths")
-            .display()
-    )
-}

crates/ruff_linter/src/importer/mod.rs

@@ -6,10 +6,12 @@
 use std::error::Error;
 
 use anyhow::Result;
-use libcst_native::{ImportAlias, Name as cstName, NameOrAttribute};
+use libcst_native as cst;
 
+use ruff_diagnostics::Edit;
 use ruff_python_ast::{self as ast, Expr, ModModule, Stmt};
 use ruff_python_codegen::Stylist;
+use ruff_python_importer::Insertion;
 use ruff_python_parser::{Parsed, Tokens};
 use ruff_python_semantic::{
     ImportedName, MemberNameImport, ModuleNameImport, NameImport, SemanticModel,
@@ -17,22 +19,17 @@ use ruff_python_semantic::{
 use ruff_python_trivia::textwrap::indent;
 use ruff_text_size::{Ranged, TextSize};
 
-use crate::Edit;
-use crate::Locator;
 use crate::cst::matchers::{match_aliases, match_import_from, match_statement};
 use crate::fix;
 use crate::fix::codemods::CodegenStylist;
-use crate::importer::insertion::Insertion;
-
-mod insertion;
 
 pub(crate) struct Importer<'a> {
     /// The Python AST to which we are adding imports.
     python_ast: &'a [Stmt],
     /// The tokens representing the Python AST.
     tokens: &'a Tokens,
-    /// The [`Locator`] for the Python AST.
-    locator: &'a Locator<'a>,
+    /// The source code text for `python_ast`.
+    source: &'a str,
     /// The [`Stylist`] for the Python AST.
     stylist: &'a Stylist<'a>,
     /// The list of visited, top-level runtime imports in the Python AST.
@@ -44,13 +41,13 @@ pub(crate) struct Importer<'a> {
 impl<'a> Importer<'a> {
     pub(crate) fn new(
         parsed: &'a Parsed<ModModule>,
-        locator: &'a Locator<'a>,
+        source: &'a str,
         stylist: &'a Stylist<'a>,
     ) -> Self {
         Self {
             python_ast: parsed.suite(),
             tokens: parsed.tokens(),
-            locator,
+            source,
             stylist,
             runtime_imports: Vec::default(),
             type_checking_blocks: Vec::default(),
@@ -76,11 +73,10 @@ impl<'a> Importer<'a> {
         let required_import = import.to_string();
         if let Some(stmt) = self.preceding_import(at) {
             // Insert after the last top-level import.
-            Insertion::end_of_statement(stmt, self.locator, self.stylist)
-                .into_edit(&required_import)
+            Insertion::end_of_statement(stmt, self.source, self.stylist).into_edit(&required_import)
         } else {
             // Insert at the start of the file.
-            Insertion::start_of_file(self.python_ast, self.locator, self.stylist)
+            Insertion::start_of_file(self.python_ast, self.source, self.stylist)
                 .into_edit(&required_import)
         }
     }
@@ -99,17 +95,17 @@ impl<'a> Importer<'a> {
         let content = fix::codemods::retain_imports(
             &import.names,
             import.statement,
-            self.locator,
+            self.source,
             self.stylist,
         )?;
 
         // Add the import to the top-level.
         let insertion = if let Some(stmt) = self.preceding_import(at) {
             // Insert after the last top-level import.
-            Insertion::end_of_statement(stmt, self.locator, self.stylist)
+            Insertion::end_of_statement(stmt, self.source, self.stylist)
         } else {
             // Insert at the start of the file.
-            Insertion::start_of_file(self.python_ast, self.locator, self.stylist)
+            Insertion::start_of_file(self.python_ast, self.source, self.stylist)
         };
         let add_import_edit = insertion.into_edit(&content);
 
@@ -131,7 +127,7 @@ impl<'a> Importer<'a> {
         let content = fix::codemods::retain_imports(
             &import.names,
             import.statement,
-            self.locator,
+            self.source,
             self.stylist,
         )?;
 
@@ -155,7 +151,7 @@ impl<'a> Importer<'a> {
                         None
                     } else {
                         Some(Edit::range_replacement(
-                            self.locator.slice(statement.range()).to_string(),
+                            self.source[statement.range()].to_string(),
                             statement.range(),
                         ))
                     }
@@ -186,7 +182,7 @@ impl<'a> Importer<'a> {
                     None
                 } else {
                     Some(Edit::range_replacement(
-                        self.locator.slice(type_checking.range()).to_string(),
+                        self.source[type_checking.range()].to_string(),
                         type_checking.range(),
                     ))
                 };
@@ -362,7 +358,7 @@ impl<'a> Importer<'a> {
         // By adding this no-op edit, we force the `unused-imports` fix to conflict with the
         // `sys-exit-alias` fix, and thus will avoid applying both fixes in the same pass.
         let import_edit = Edit::range_replacement(
-            self.locator.slice(imported_name.range()).to_string(),
+            self.source[imported_name.range()].to_string(),
             imported_name.range(),
         );
         Ok(Some((import_edit, imported_name.into_name())))
@@ -469,11 +465,11 @@ impl<'a> Importer<'a> {
 
     /// Add the given member to an existing `Stmt::ImportFrom` statement.
     fn add_member(&self, stmt: &Stmt, member: &str) -> Result<Edit> {
-        let mut statement = match_statement(self.locator.slice(stmt))?;
+        let mut statement = match_statement(&self.source[stmt.range()])?;
         let import_from = match_import_from(&mut statement)?;
         let aliases = match_aliases(import_from)?;
-        aliases.push(ImportAlias {
-            name: NameOrAttribute::N(Box::new(cstName {
+        aliases.push(cst::ImportAlias {
+            name: cst::NameOrAttribute::N(Box::new(cst::Name {
                 value: member,
                 lpar: vec![],
                 rpar: vec![],
@@ -491,10 +487,10 @@ impl<'a> Importer<'a> {
     fn add_type_checking_block(&self, content: &str, at: TextSize) -> Result<Edit> {
         let insertion = if let Some(stmt) = self.preceding_import(at) {
             // Insert after the last top-level import.
-            Insertion::end_of_statement(stmt, self.locator, self.stylist)
+            Insertion::end_of_statement(stmt, self.source, self.stylist)
         } else {
             // Insert at the start of the file.
-            Insertion::start_of_file(self.python_ast, self.locator, self.stylist)
+            Insertion::start_of_file(self.python_ast, self.source, self.stylist)
         };
         if insertion.is_inline() {
             Err(anyhow::anyhow!(
@@ -507,7 +503,7 @@ impl<'a> Importer<'a> {
 
     /// Add an import statement to an existing `TYPE_CHECKING` block.
     fn add_to_type_checking_block(&self, content: &str, at: TextSize) -> Edit {
-        Insertion::start_of_block(at, self.locator, self.stylist, self.tokens).into_edit(content)
+        Insertion::start_of_block(at, self.source, self.stylist, self.tokens).into_edit(content)
     }
 
     /// Return the import statement that precedes the given position, if any.

crates/ruff_linter/src/linter.rs

@@ -319,6 +319,9 @@ pub fn check_path(
                         &context,
                     );
                 }
+                Rule::PanicyTestRule => {
+                    test_rules::PanicyTestRule::diagnostic(locator, comment_ranges, &context);
+                }
                 _ => unreachable!("All test rules must have an implementation"),
             }
         }
@@ -513,10 +516,9 @@ fn diagnostics_to_messages(
                 .map(|error| create_syntax_error_diagnostic(source_file.clone(), error, error)),
         )
         .chain(diagnostics.into_iter().map(|mut diagnostic| {
-            let noqa_offset = directives
-                .noqa_line_for
-                .resolve(diagnostic.expect_range().start());
-            diagnostic.set_noqa_offset(noqa_offset);
+            if let Some(range) = diagnostic.range() {
+                diagnostic.set_noqa_offset(directives.noqa_line_for.resolve(range.start()));
+            }
             diagnostic
         }))
         .collect()
@@ -983,7 +985,7 @@ mod tests {
             &parsed,
             target_version,
         );
-        diagnostics.sort_by_key(|diagnostic| diagnostic.expect_range().start());
+        diagnostics.sort_by(Diagnostic::ruff_start_ordering);
         diagnostics
     }
 
@@ -1231,6 +1233,10 @@ mod tests {
     )]
     #[test_case(Rule::AwaitOutsideAsync, Path::new("await_outside_async_function.py"))]
     #[test_case(Rule::AwaitOutsideAsync, Path::new("async_comprehension.py"))]
+    #[test_case(
+        Rule::YieldFromInAsyncFunction,
+        Path::new("yield_from_in_async_function.py")
+    )]
     fn test_syntax_errors(rule: Rule, path: &Path) -> Result<()> {
         let snapshot = path.to_string_lossy().to_string();
         let path = Path::new("resources/test/fixtures/syntax_errors").join(path);

crates/ruff_linter/src/message/github.rs

@@ -1,90 +0,0 @@
-use std::io::Write;
-
-use ruff_db::diagnostic::Diagnostic;
-use ruff_source_file::LineColumn;
-
-use crate::fs::relativize_path;
-use crate::message::{Emitter, EmitterContext};
-
-/// Generate error workflow command in GitHub Actions format.
-/// See: [GitHub documentation](https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-error-message)
-#[derive(Default)]
-pub struct GithubEmitter;
-
-impl Emitter for GithubEmitter {
-    fn emit(
-        &mut self,
-        writer: &mut dyn Write,
-        diagnostics: &[Diagnostic],
-        context: &EmitterContext,
-    ) -> anyhow::Result<()> {
-        for diagnostic in diagnostics {
-            let source_location = diagnostic.expect_ruff_start_location();
-            let filename = diagnostic.expect_ruff_filename();
-            let location = if context.is_notebook(&filename) {
-                // We can't give a reasonable location for the structured formats,
-                // so we show one that's clearly a fallback
-                LineColumn::default()
-            } else {
-                source_location
-            };
-
-            let end_location = diagnostic.expect_ruff_end_location();
-
-            write!(
-                writer,
-                "::error title=Ruff ({code}),file={file},line={row},col={column},endLine={end_row},endColumn={end_column}::",
-                code = diagnostic.secondary_code_or_id(),
-                file = filename,
-                row = source_location.line,
-                column = source_location.column,
-                end_row = end_location.line,
-                end_column = end_location.column,
-            )?;
-
-            write!(
-                writer,
-                "{path}:{row}:{column}:",
-                path = relativize_path(&filename),
-                row = location.line,
-                column = location.column,
-            )?;
-
-            if let Some(code) = diagnostic.secondary_code() {
-                write!(writer, " {code}")?;
-            } else {
-                write!(writer, " {id}:", id = diagnostic.id())?;
-            }
-
-            writeln!(writer, " {}", diagnostic.body())?;
-        }
-
-        Ok(())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use insta::assert_snapshot;
-
-    use crate::message::GithubEmitter;
-    use crate::message::tests::{
-        capture_emitter_output, create_diagnostics, create_syntax_error_diagnostics,
-    };
-
-    #[test]
-    fn output() {
-        let mut emitter = GithubEmitter;
-        let content = capture_emitter_output(&mut emitter, &create_diagnostics());
-
-        assert_snapshot!(content);
-    }
-
-    #[test]
-    fn syntax_errors() {
-        let mut emitter = GithubEmitter;
-        let content = capture_emitter_output(&mut emitter, &create_syntax_error_diagnostics());
-
-        assert_snapshot!(content);
-    }
-}

crates/ruff_linter/src/message/gitlab.rs

@@ -1,174 +0,0 @@
-use std::collections::HashSet;
-use std::collections::hash_map::DefaultHasher;
-use std::hash::{Hash, Hasher};
-use std::io::Write;
-
-use serde::ser::SerializeSeq;
-use serde::{Serialize, Serializer};
-use serde_json::json;
-
-use ruff_db::diagnostic::Diagnostic;
-
-use crate::fs::{relativize_path, relativize_path_to};
-use crate::message::{Emitter, EmitterContext};
-
-/// Generate JSON with violations in GitLab CI format
-//  https://docs.gitlab.com/ee/ci/testing/code_quality.html#implement-a-custom-tool
-pub struct GitlabEmitter {
-    project_dir: Option<String>,
-}
-
-impl Default for GitlabEmitter {
-    fn default() -> Self {
-        Self {
-            project_dir: std::env::var("CI_PROJECT_DIR").ok(),
-        }
-    }
-}
-
-impl Emitter for GitlabEmitter {
-    fn emit(
-        &mut self,
-        writer: &mut dyn Write,
-        diagnostics: &[Diagnostic],
-        context: &EmitterContext,
-    ) -> anyhow::Result<()> {
-        serde_json::to_writer_pretty(
-            writer,
-            &SerializedMessages {
-                diagnostics,
-                context,
-                project_dir: self.project_dir.as_deref(),
-            },
-        )?;
-
-        Ok(())
-    }
-}
-
-struct SerializedMessages<'a> {
-    diagnostics: &'a [Diagnostic],
-    context: &'a EmitterContext<'a>,
-    project_dir: Option<&'a str>,
-}
-
-impl Serialize for SerializedMessages<'_> {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let mut s = serializer.serialize_seq(Some(self.diagnostics.len()))?;
-        let mut fingerprints = HashSet::<u64>::with_capacity(self.diagnostics.len());
-
-        for diagnostic in self.diagnostics {
-            let filename = diagnostic.expect_ruff_filename();
-
-            let (start_location, end_location) = if self.context.is_notebook(&filename) {
-                // We can't give a reasonable location for the structured formats,
-                // so we show one that's clearly a fallback
-                Default::default()
-            } else {
-                (
-                    diagnostic.expect_ruff_start_location(),
-                    diagnostic.expect_ruff_end_location(),
-                )
-            };
-
-            let path = self.project_dir.as_ref().map_or_else(
-                || relativize_path(&filename),
-                |project_dir| relativize_path_to(&filename, project_dir),
-            );
-
-            let mut message_fingerprint = fingerprint(diagnostic, &path, 0);
-
-            // Make sure that we do not get a fingerprint that is already in use
-            // by adding in the previously generated one.
-            while fingerprints.contains(&message_fingerprint) {
-                message_fingerprint = fingerprint(diagnostic, &path, message_fingerprint);
-            }
-            fingerprints.insert(message_fingerprint);
-
-            let description = diagnostic.body();
-            let check_name = diagnostic.secondary_code_or_id();
-
-            let value = json!({
-                "check_name": check_name,
-                // GitLab doesn't display the separate `check_name` field in a Code Quality report,
-                // so prepend it to the description too.
-                "description": format!("{check_name}: {description}"),
-                "severity": "major",
-                "fingerprint": format!("{:x}", message_fingerprint),
-                "location": {
-                    "path": path,
-                    "positions": {
-                        "begin": start_location,
-                        "end": end_location,
-                    },
-                },
-            });
-
-            s.serialize_element(&value)?;
-        }
-
-        s.end()
-    }
-}
-
-/// Generate a unique fingerprint to identify a violation.
-fn fingerprint(message: &Diagnostic, project_path: &str, salt: u64) -> u64 {
-    let mut hasher = DefaultHasher::new();
-
-    salt.hash(&mut hasher);
-    message.name().hash(&mut hasher);
-    project_path.hash(&mut hasher);
-
-    hasher.finish()
-}
-
-#[cfg(test)]
-mod tests {
-    use insta::assert_snapshot;
-
-    use crate::message::GitlabEmitter;
-    use crate::message::tests::{
-        capture_emitter_output, create_diagnostics, create_syntax_error_diagnostics,
-    };
-
-    #[test]
-    fn output() {
-        let mut emitter = GitlabEmitter::default();
-        let content = capture_emitter_output(&mut emitter, &create_diagnostics());
-
-        assert_snapshot!(redact_fingerprint(&content));
-    }
-
-    #[test]
-    fn syntax_errors() {
-        let mut emitter = GitlabEmitter::default();
-        let content = capture_emitter_output(&mut emitter, &create_syntax_error_diagnostics());
-
-        assert_snapshot!(redact_fingerprint(&content));
-    }
-
-    // Redact the fingerprint because the default hasher isn't stable across platforms.
-    fn redact_fingerprint(content: &str) -> String {
-        static FINGERPRINT_HAY_KEY: &str = r#""fingerprint": ""#;
-
-        let mut output = String::with_capacity(content.len());
-        let mut last = 0;
-
-        for (start, _) in content.match_indices(FINGERPRINT_HAY_KEY) {
-            let fingerprint_hash_start = start + FINGERPRINT_HAY_KEY.len();
-            output.push_str(&content[last..fingerprint_hash_start]);
-            output.push_str("<redacted>");
-            last = fingerprint_hash_start
-                + content[fingerprint_hash_start..]
-                    .find('"')
-                    .expect("Expected terminating quote");
-        }
-
-        output.push_str(&content[last..]);
-
-        output
-    }
-}

crates/ruff_linter/src/message/grouped.rs

@@ -105,7 +105,7 @@ fn group_diagnostics_by_filename(
             .or_insert_with(Vec::new)
             .push(MessageWithLocation {
                 message: diagnostic,
-                start_location: diagnostic.expect_ruff_start_location(),
+                start_location: diagnostic.ruff_start_location().unwrap_or_default(),
             });
     }
     grouped_messages