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Bump 0.12.0 (#18724)

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- [x] Updated changelog
- [x] Updated breaking changes
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34
BREAKING_CHANGES.md
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@ -1,5 +1,39 @@
# Breaking Changes
## 0.12.0
- **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.
- **[`suspicious-xmle-tree-usage`](https://docs.astral.sh/ruff/rules/suspicious-xmle-tree-usage/)
(`S320`) has been removed**
## 0.11.0
This is a follow-up to release 0.10.0. Because of a mistake in the release process, the `requires-python` inference changes were not included in that release. Ruff 0.11.0 now includes this change as well as the stabilization of the preview behavior for `PGH004`.

157
CHANGELOG.md
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@ -1,5 +1,145 @@
# Changelog
## 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`](https://docs.astral.sh/ruff/rules/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))
## 0.11.13
### Preview features
@ -391,7 +531,7 @@ See also, the "Remapped rules" section which may result in disabled rules.
- **More robust noqa parsing** ([#16483](https://github.com/astral-sh/ruff/pull/16483))
The syntax for both file-level and in-line suppression comments has been unified and made more robust to certain errors. In most cases, this will result in more suppression comments being read by Ruff, but there are a few instances where previously read comments will now log an error to the user instead. Please refer to the documentation on [*Error suppression*](https://docs.astral.sh/ruff/linter/#error-suppression) for the full specification.
The syntax for both file-level and in-line suppression comments has been unified and made more robust to certain errors. In most cases, this will result in more suppression comments being read by Ruff, but there are a few instances where previously read comments will now log an error to the user instead. Please refer to the documentation on [_Error suppression_](https://docs.astral.sh/ruff/linter/#error-suppression) for the full specification.
- **Avoid unnecessary parentheses around with statements with a single context manager and a trailing comment** ([#14005](https://github.com/astral-sh/ruff/pull/14005))
@ -1803,7 +1943,7 @@ The following fixes have been stabilized:
## 0.5.6
Ruff 0.5.6 automatically enables linting and formatting of notebooks in *preview mode*.
Ruff 0.5.6 automatically enables linting and formatting of notebooks in _preview mode_.
You can opt-out of this behavior by adding `*.ipynb` to the `extend-exclude` setting.
```toml
@ -2556,7 +2696,7 @@ To setup `ruff server` with your editor, refer to the [README.md](https://github
### Server
*This section is devoted to updates for our new language server, written in Rust.*
_This section is devoted to updates for our new language server, written in Rust._
- Enable ruff-specific source actions ([#10916](https://github.com/astral-sh/ruff/pull/10916))
- Refreshes diagnostics for open files when file configuration is changed ([#10988](https://github.com/astral-sh/ruff/pull/10988))
@ -3963,7 +4103,7 @@ Read Ruff's new [versioning policy](https://docs.astral.sh/ruff/versioning/).
- \[`refurb`\] Add `single-item-membership-test` (`FURB171`) ([#7815](https://github.com/astral-sh/ruff/pull/7815))
- \[`pylint`\] Add `and-or-ternary` (`R1706`) ([#7811](https://github.com/astral-sh/ruff/pull/7811))
*New rules are added in [preview](https://docs.astral.sh/ruff/preview/).*
_New rules are added in [preview](https://docs.astral.sh/ruff/preview/)._
### Configuration
@ -4038,3 +4178,12 @@ Read Ruff's new [versioning policy](https://docs.astral.sh/ruff/versioning/).
### Playground
- Fix playground `Quick Fix` action ([#7824](https://github.com/astral-sh/ruff/pull/7824))
[`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

6
Cargo.lock generated
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@ -2510,7 +2510,7 @@ dependencies = [
[[package]]
name = "ruff"
version = "0.11.13"
version = "0.12.0"
dependencies = [
"anyhow",
"argfile",
@ -2748,7 +2748,7 @@ dependencies = [
[[package]]
name = "ruff_linter"
version = "0.11.13"
version = "0.12.0"
dependencies = [
"aho-corasick",
"anyhow",
@ -3085,7 +3085,7 @@ dependencies = [
[[package]]
name = "ruff_wasm"
version = "0.11.13"
version = "0.12.0"
dependencies = [
"console_error_panic_hook",
"console_log",

6
README.md
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@ -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/0.11.13/install.sh | sh
powershell -c "irm https://astral.sh/ruff/0.11.13/install.ps1 | iex"
curl -LsSf https://astral.sh/ruff/0.12.0/install.sh | sh
powershell -c "irm https://astral.sh/ruff/0.12.0/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: v0.11.13
rev: v0.12.0
hooks:
# Run the linter.
- id: ruff

2
crates/ruff/Cargo.toml
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@ -1,6 +1,6 @@
[package]
name = "ruff"
version = "0.11.13"
version = "0.12.0"
publish = true
authors = { workspace = true }
edition = { workspace = true }

2
crates/ruff_linter/Cargo.toml
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@ -1,6 +1,6 @@
[package]
name = "ruff_linter"
version = "0.11.13"
version = "0.12.0"
publish = false
authors = { workspace = true }
edition = { workspace = true }

2
crates/ruff_wasm/Cargo.toml
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@ -1,6 +1,6 @@
[package]
name = "ruff_wasm"
version = "0.11.13"
version = "0.12.0"
publish = false
authors = { workspace = true }
edition = { workspace = true }

8
docs/integrations.md
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@ -80,7 +80,7 @@ You can add the following configuration to `.gitlab-ci.yml` to run a `ruff forma
stage: build
interruptible: true
image:
name: ghcr.io/astral-sh/ruff:0.11.13-alpine
name: ghcr.io/astral-sh/ruff:0.12.0-alpine
before_script:
- cd $CI_PROJECT_DIR
- ruff --version
@ -106,7 +106,7 @@ Ruff can be used as a [pre-commit](https://pre-commit.com) hook via [`ruff-pre-c
```yaml
- repo: https://github.com/astral-sh/ruff-pre-commit
# Ruff version.
rev: v0.11.13
rev: v0.12.0
hooks:
# Run the linter.
- id: ruff
@ -119,7 +119,7 @@ To enable lint fixes, add the `--fix` argument to the lint hook:
```yaml
- repo: https://github.com/astral-sh/ruff-pre-commit
# Ruff version.
rev: v0.11.13
rev: v0.12.0
hooks:
# Run the linter.
- id: ruff
@ -133,7 +133,7 @@ To avoid running on Jupyter Notebooks, remove `jupyter` from the list of allowed
```yaml
- repo: https://github.com/astral-sh/ruff-pre-commit
# Ruff version.
rev: v0.11.13
rev: v0.12.0
hooks:
# Run the linter.
- id: ruff

2
docs/tutorial.md
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@ -369,7 +369,7 @@ This tutorial has focused on Ruff's command-line interface, but Ruff can also be
```yaml
- repo: https://github.com/astral-sh/ruff-pre-commit
# Ruff version.
rev: v0.11.13
rev: v0.12.0
hooks:
# Run the linter.
- id: ruff

2
pyproject.toml
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@ -4,7 +4,7 @@ build-backend = "maturin"
[project]
name = "ruff"
version = "0.11.13"
version = "0.12.0"
description = "An extremely fast Python linter and code formatter, written in Rust."
authors = [{ name = "Astral Software Inc.", email = "hey@astral.sh" }]
readme = "README.md"

2
scripts/benchmarks/pyproject.toml
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@ -1,6 +1,6 @@
[project]
name = "scripts"
version = "0.11.13"
version = "0.12.0"
description = ""
authors = ["Charles Marsh <charlie.r.marsh@gmail.com>"]