Bump version to 0.0.142

Add all plugin options to README reference (#936 )
Add shell completions support (#935 )
2022-11-28 00:19:27 -05:00 · 2022-11-28 00:19:14 -05:00 · 2022-11-27 23:59:36 -05:00 · 2022-11-27 23:50:24 -05:00 · 2022-11-27 22:58:42 -05:00 · 2022-11-27 22:36:17 -05:00
79 changed files with 4147 additions and 296 deletions
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.138
+    rev: v0.0.142
    hooks:
      - id: ruff

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -290,6 +290,36 @@ dependencies = [
 "termcolor",
 ]

+[[package]]
+name = "clap_complete"
+version = "4.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7b3c9eae0de7bf8e3f904a5e40612b21fb2e2e566456d177809a48b892d24da"
+dependencies = [
+ "clap 4.0.22",
+]
+
+[[package]]
+name = "clap_complete_command"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4160b4a4f72ef58bd766bad27c09e6ef1cc9d82a22f6a0f55d152985a4a48e31"
+dependencies = [
+ "clap 4.0.22",
+ "clap_complete",
+ "clap_complete_fig",
+]
+
+[[package]]
+name = "clap_complete_fig"
+version = "4.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46b30e010e669cd021e5004f3be26cff6b7c08d2a8a0d65b48d43a8cc0efd6c3"
+dependencies = [
+ "clap 4.0.22",
+ "clap_complete",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.0.21"
@@ -670,7 +700,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8-to-ruff"
-version = "0.0.138-dev.0"
+version = "0.0.142-dev.0"
 dependencies = [
 "anyhow",
 "clap 4.0.22",
@@ -1775,7 +1805,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.138"
+version = "0.0.142"
 dependencies = [
 "annotate-snippets 0.9.1",
 "anyhow",
@@ -1786,6 +1816,7 @@ dependencies = [
 "cachedir",
 "chrono",
 "clap 4.0.22",
+ "clap_complete_command",
 "clearscreen",
 "colored",
 "common-path",
@@ -1825,7 +1856,7 @@ dependencies = [

 [[package]]
 name = "ruff_dev"
-version = "0.0.138"
+version = "0.0.142"
 dependencies = [
 "anyhow",
 "clap 4.0.22",
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ members = [

 [package]
 name = "ruff"
-version = "0.0.138"
+version = "0.0.142"
 edition = "2021"
 rust-version = "1.65.0"

@@ -22,6 +22,7 @@ bitflags = { version = "1.3.2" }
 cachedir = { version = "0.3.0" }
 chrono = { version = "0.4.21", default-features = false, features = ["clock"] }
 clap = { version = "4.0.1", features = ["derive"] }
+clap_complete_command = "0.4.0"
 colored = { version = "2.0.0" }
 common-path = { version = "1.0.0" }
 dirs = { version = "4.0.0" }
--- a/25
+++ b/25
@@ -242,6 +242,31 @@ are:
    SOFTWARE.
  """

+- flake8-debugger, licensed as follows:
+  """
+    MIT License
+
+    Copyright (c) 2016 Joseph Kahn
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+  """
+
 - flake8-tidy-imports, licensed as follows:
  """
    MIT License
--- a/README.md
+++ b/README.md
@@ -20,10 +20,9 @@ An extremely fast Python linter, written in Rust.
 - 🤝  Python 3.10 compatibility
 - 🛠️  `pyproject.toml` support
 - 📦  Built-in caching, to avoid re-analyzing unchanged files
- 🔧  `--fix` support, for automatic error correction (e.g., automatically remove unused imports)
- 👀  `--watch` support, for continuous file monitoring
+- 🔧  Autofix support, for automatic error correction (e.g., automatically remove unused imports)
 - ⚖️  [Near-parity](#how-does-ruff-compare-to-flake8) with the built-in Flake8 rule set
- 🔌  Native re-implementations of popular Flake8 plugins, like [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/) ([`pydocstyle`](https://pypi.org/project/pydocstyle/))
+- 🔌  Native re-implementations of popular Flake8 plugins, like [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)

 Ruff aims to be orders of magnitude faster than alternative tools while integrating more
 functionality behind a single, common interface. Ruff can be used to replace Flake8 (plus a variety
@@ -32,7 +31,7 @@ of plugins), [`isort`](https://pypi.org/project/isort/), [`pydocstyle`](https://
 and [`autoflake`](https://pypi.org/project/autoflake/) all while executing tens or hundreds of times
 faster than any individual tool.

-Ruff is actively developed and used in major open-source projects like:
+Ruff is extremely actively developed and used in major open-source projects like:

 - [FastAPI](https://github.com/tiangolo/fastapi)
 - [Bokeh](https://github.com/bokeh/bokeh)
@@ -43,6 +42,26 @@ Ruff is actively developed and used in major open-source projects like:

 Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-much-much-faster).

+## Testimonials
+
+[**Sebastián Ramírez**](https://twitter.com/tiangolo/status/1591912354882764802), creator
+of [FastAPI](https://github.com/tiangolo/fastapi):
+
+> Ruff is so fast that sometimes I add an intentional bug in the code just to confirm it's actually
+> running and checking the code.
+
+[**Bryan Van de Ven**](https://github.com/bokeh/bokeh/pull/12605), co-creator
+of [Bokeh](https://github.com/bokeh/bokeh/), original author
+of [Conda](https://docs.conda.io/en/latest/):
+
+> Ruff is ~150-200x faster than flake8 on my machine, scanning the whole repo takes ~0.2s instead of
+> ~20s. This is an enormous quality of life improvement for local dev. It's fast enough that I added
+> it as an actual commit hook, which is terrific.
+
+[**Tim Abbott**](https://github.com/charliermarsh/ruff/issues/465#issuecomment-1317400028), lead developer of [Zulip](https://github.com/zulip/zulip):
+
+> This is just ridiculously fast... `ruff` is amazing.
+
 ## Table of Contents

 1. [Installation and Usage](#installation-and-usage)
@@ -56,15 +75,16 @@ Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-mu
   1. [pep8-naming (N)](#pep8-naming)
   1. [flake8-bandit (S)](#flake8-bandit)
   1. [flake8-comprehensions (C)](#flake8-comprehensions)
+   1. [flake8-boolean-trap (FBT)](#flake8-boolean-trap)
   1. [flake8-bugbear (B)](#flake8-bugbear)
   1. [flake8-builtins (A)](#flake8-builtins)
+   1. [flake8-debugger (T)](#flake8-debugger)
   1. [flake8-tidy-imports (I25)](#flake8-tidy-imports)
   1. [flake8-print (T)](#flake8-print)
   1. [flake8-quotes (Q)](#flake8-quotes)
   1. [flake8-annotations (ANN)](#flake8-annotations)
   1. [flake8-2020 (YTT)](#flake8-2020)
   1. [flake8-blind-except (BLE)](#flake8-blind-except)
-   1. [flake8-boolean-trap (FBT)](#flake8-boolean-trap)
   1. [mccabe (C90)](#mccabe)
   1. [Ruff-specific rules (RUF)](#ruff-specific-rules)
   1. [Meta rules (M)](#meta-rules)
@@ -73,6 +93,7 @@ Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-mu
 1. [Development](#development)
 1. [Releases](#releases)
 1. [Benchmarks](#benchmarks)
+1. [Reference](#reference)
 1. [License](#license)
 1. [Contributing](#contributing)

@@ -80,12 +101,18 @@ Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-mu

 ### Installation

-Available as [`ruff`](https://pypi.org/project/ruff/) on PyPI:
+Ruff is available as [`ruff`](https://pypi.org/project/ruff/) on PyPI:

 ```shell
 pip install ruff
 ```

+If you're a **macOS Homebrew** or a **Linuxbrew** user, you can also install `ruff` via Homebrew:
+
+```shell
+brew install ruff
+```
+
 ### Usage

 To run Ruff, try any of the following:
@@ -107,7 +134,7 @@ Ruff also works with [pre-commit](https://pre-commit.com):
 ```yaml
 repos:
  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.138
+    rev: v0.0.142
    hooks:
      - id: ruff
 ```
@@ -117,8 +144,10 @@ _Note: prior to `v0.0.86`, `ruff-pre-commit` used `lint` (rather than `ruff`) as

 ## Configuration

-Ruff is configurable both via `pyproject.toml` and the command line. If left unspecified, the
-default configuration is equivalent to:
+Ruff is configurable both via `pyproject.toml` and the command line. For a full list of configurable
+options, see the [API reference](#reference).
+
+If left unspecified, the default configuration is equivalent to:

 ```toml
 [tool.ruff]
@@ -179,8 +208,10 @@ ignore = ["E501"]
 fix = true
 unfixable = ["F401"]

-# Ignore `E402` (import violations in any `__init__.py` file, and in `path/to/file.py`.
-per-file-ignores = {"__init__.py" = ["E402"], "path/to/file.py" = ["E402"]}
+# Ignore `E402` (import violations) in all `__init__.py` files, and in `path/to/file.py`.
+[tool.ruff.per-file-ignores]
+"__init__.py" = ["E402"]
+"path/to/file.py" = ["E402"]
 ```

 Plugin configurations should be expressed as subsections, e.g.:
@@ -194,7 +225,9 @@ select = ["E", "F", "Q"]
 docstring-quotes = "double"
 ```

-Alternatively, common configuration settings can be provided via the command-line:
+For a full list of configurable options, see the [API reference](#reference).
+
+Some common configuration settings can be provided via the command-line:

 ```shell
 ruff path/to/code/ --select F401 --select F403
@@ -271,21 +304,10 @@ Options:
          Print version information
 ```

-### Excluding files
-
-Exclusions are based on globs, and can be either:
-
- Single-path patterns, like `.mypy_cache` (to exclude any directory named `.mypy_cache` in the
-  tree), `foo.py` (to exclude any file named `foo.py`), or `foo_*.py` (to exclude any file matching
-  `foo_*.py` ).
- Relative patterns, like `directory/foo.py` (to exclude that specific file) or `directory/*.py`
-  (to exclude any Python files in `directory`). Note that these paths are relative to the
-  project root (e.g., the directory containing your `pyproject.toml`).
-
 ### Ignoring errors

 To omit a lint check entirely, add it to the "ignore" list via `--ignore` or `--extend-ignore`,
-either  on the command-line or in your `project.toml` file.
+either on the command-line or in your `project.toml` file.

 To ignore an error in-line, Ruff uses a `noqa` system similar to [Flake8](https://flake8.pycqa.org/en/3.1.1/user/ignoring-errors.html).
 To ignore an individual error, add `# noqa: {code}` to the end of the line, like so:
@@ -350,7 +372,20 @@ For more, see [Pyflakes](https://pypi.org/project/pyflakes/2.5.0/) on PyPI.
 | F405 | ImportStarUsage | `...` may be undefined, or defined from star imports: `...` |  |
 | F406 | ImportStarNotPermitted | `from ... import *` only allowed at module level |  |
 | F407 | FutureFeatureNotDefined | Future feature `...` is not defined |  |
+| F501 | PercentFormatInvalidFormat | '...' % ... has invalid format string: ... |  |
+| F502 | PercentFormatExpectedMapping | '...' % ... expected mapping but got sequence |  |
+| F503 | PercentFormatExpectedSequence | '...' % ... expected sequence but got mapping |  |
+| F504 | PercentFormatExtraNamedArguments | '...' % ... has unused named argument(s): ... |  |
+| F505 | PercentFormatMissingArgument | '...' % ... is missing argument(s) for placeholder(s): ... |  |
+| F506 | PercentFormatMixedPositionalAndNamed | '...' % ... has mixed positional and named placeholders |  |
+| F507 | PercentFormatPositionalCountMismatch | '...' % ... has 4 placeholder(s) but 2 substitution(s) |  |
+| F508 | PercentFormatStarRequiresSequence | '...' % ... `*` specifier requires sequence |  |
+| F509 | PercentFormatUnsupportedFormatCharacter | '...' % ... has unsupported format character 'c' |  |
 | F521 | StringDotFormatInvalidFormat | '...'.format(...) has invalid format string: ... |  |
+| F522 | StringDotFormatExtraNamedArguments | '...'.format(...) has unused named argument(s): ... |  |
+| F523 | StringDotFormatExtraPositionalArguments | '...'.format(...) has unused arguments at position(s): ... |  |
+| F524 | StringDotFormatMissingArguments | '...'.format(...) is missing argument(s) for placeholder(s): ... |  |
+| F525 | StringDotFormatMixingAutomatic | '...'.format(...) mixes automatic and manual numbering |  |
 | F541 | FStringMissingPlaceholders | f-string without any placeholders |  |
 | F601 | MultiValueRepeatedKeyLiteral | Dictionary key literal repeated |  |
 | F602 | MultiValueRepeatedKeyVariable | Dictionary key `...` repeated |  |
@@ -534,6 +569,14 @@ For more, see [flake8-comprehensions](https://pypi.org/project/flake8-comprehens
 | C416 | UnnecessaryComprehension | Unnecessary `(list\|set)` comprehension (rewrite using `(list\|set)()`) | 🛠 |
 | C417 | UnnecessaryMap | Unnecessary `map` usage (rewrite using a `(list\|set\|dict)` comprehension) |  |

+### flake8-debugger
+
+For more, see [flake8-debugger](https://pypi.org/project/flake8-debugger/4.1.2/) on PyPI.
+
+| Code | Name | Message | Fix |
+| ---- | ---- | ------- | --- |
+| T100 | Debugger | Import for `...` found |  |
+
 ### flake8-boolean-trap

 For more, see [flake8-boolean-trap](https://pypi.org/project/flake8-boolean-trap/0.1.0/) on PyPI.
@@ -571,6 +614,7 @@ For more, see [flake8-bugbear](https://pypi.org/project/flake8-bugbear/22.10.27/
 | B020 | LoopVariableOverridesIterator | Loop control variable `...` overrides iterable it iterates |  |
 | B021 | FStringDocstring | f-string used as docstring. This will be interpreted by python as a joined string rather than a docstring. |  |
 | B022 | UselessContextlibSuppress | No arguments passed to `contextlib.suppress`. No exceptions will be suppressed and therefore this context manager is redundant |  |
+| B023 | FunctionUsesLoopVariable | Function definition does not bind loop variable `...` |  |
 | B024 | AbstractBaseClassWithoutAbstractMethod | `...` is an abstract base class, but it has no abstract methods |  |
 | B025 | DuplicateTryBlockException | try-except block with duplicate exception `Exception` |  |
 | B026 | StarArgUnpackingAfterKeywordArg | Star-arg unpacking after a keyword argument is strongly discouraged |  |
@@ -804,28 +848,28 @@ stylistic lint rules that are obviated by autoformatting.
 (Coming from Flake8? Try [`flake8-to-ruff`](https://pypi.org/project/flake8-to-ruff/) to
 automatically convert your existing configuration.)

-Ruff can be used as a (near) drop-in replacement for Flake8 when used (1) without or with a small
-number of plugins, (2) alongside Black, and (3) on Python 3 code.
+Ruff can be used as a drop-in replacement for Flake8 when used (1) without or with a small number of
+plugins, (2) alongside Black, and (3) on Python 3 code.

-Under those conditions Ruff is missing 14 rules related to string `.format` calls, 1 rule related
-to docstring parsing, and 1 rule related to redefined variables.
+Under those conditions, Ruff implements every rule in Flake8, with the exception of `F811`.

-Ruff re-implements some of the most popular Flake8 plugins and related code quality tools natively,
-including:
+Ruff also re-implements some of the most popular Flake8 plugins and related code quality tools
+natively,  including:

 - [`pydocstyle`](https://pypi.org/project/pydocstyle/)
 - [`pep8-naming`](https://pypi.org/project/pep8-naming/)
 - [`yesqa`](https://github.com/asottile/yesqa)
+- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)
+- [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/)
 - [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/)
 - [`flake8-builtins`](https://pypi.org/project/flake8-builtins/)
+- [`flake8-debugger`](https://pypi.org/project/flake8-debugger/)
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
 - [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/) (1/3)
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-annotations`](https://pypi.org/project/flake8-annotations/)
- [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/)
 - [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) (6/40)
- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (27/32)
 - [`flake8-2020`](https://pypi.org/project/flake8-2020/)
 - [`flake8-blind-except`](https://pypi.org/project/flake8-blind-except/)
 - [`flake8-boolean-trap`](https://pypi.org/project/flake8-boolean-trap/)
@@ -834,12 +878,12 @@ including:
 - [`pyupgrade`](https://pypi.org/project/pyupgrade/) (16/33)
 - [`autoflake`](https://pypi.org/project/autoflake/) (1/7)

-Beyond rule-set parity, Ruff suffers from the following limitations vis-à-vis Flake8:
+Beyond the rule set, Ruff suffers from the following limitations vis-à-vis Flake8:

 1. Ruff does not yet support a few Python 3.9 and 3.10 language features, including structural
   pattern matching and parenthesized context managers.
-2. Flake8 has a plugin architecture and supports writing custom lint rules. (To date, popular Flake8
-   plugins have been re-implemented within Ruff directly.)
+2. Flake8 has a plugin architecture and supports writing custom lint rules. (Instead, popular Flake8
+   plugins are re-implemented in Rust as part of Ruff itself.)

 ### Which tools does Ruff replace?

@@ -847,16 +891,17 @@ Today, Ruff can be used to replace Flake8 when used with any of the following pl

 - [`pydocstyle`](https://pypi.org/project/pydocstyle/)
 - [`pep8-naming`](https://pypi.org/project/pep8-naming/)
+- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)
+- [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/)
 - [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/)
 - [`flake8-builtins`](https://pypi.org/project/flake8-builtins/)
+- [`flake8-debugger`](https://pypi.org/project/flake8-debugger/)
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
 - [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/) (1/3)
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-annotations`](https://pypi.org/project/flake8-annotations/)
 - [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) (6/40)
- [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/)
- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (27/32)
 - [`flake8-2020`](https://pypi.org/project/flake8-2020/)
 - [`flake8-blind-except`](https://pypi.org/project/flake8-blind-except/)
 - [`flake8-boolean-trap`](https://pypi.org/project/flake8-boolean-trap/)
@@ -1141,6 +1186,614 @@ Summary
  389.73 ± 9.92 times faster than 'flake8 resources/test/cpython'
 ```

+## Reference
+
+### Options
+
+#### [`dummy_variable_rgx`](#dummy_variable_rgx)
+
+A regular expression used to identify "dummy" variables, or those which should be ignored when evaluating
+(e.g.) unused-variable checks.
+
+**Default value**: `"^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"` (matches `_`, `__`, and `_var`, but not `_var_`)
+
+**Type**: `Regex`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Only ignore variables named "_".
+dummy_variable_rgx = "^_$"
+```
+
+---
+
+#### [`exclude`](#exclude)
+
+A list of file patterns to exclude from linting.
+
+Exclusions are based on globs, and can be either:
+
+- Single-path patterns, like `.mypy_cache` (to exclude any directory named `.mypy_cache` in the
+  tree), `foo.py` (to exclude any file named `foo.py`), or `foo_*.py` (to exclude any file matching
+  `foo_*.py` ).
+- Relative patterns, like `directory/foo.py` (to exclude that specific file) or `directory/*.py`
+  (to exclude any Python files in `directory`). Note that these paths are relative to the
+  project root (e.g., the directory containing your `pyproject.toml`).
+
+Note that you'll typically want to use [`extend_exclude`](#extend_exclude) to modify the excluded
+paths.
+
+**Default value**: `[".bzr", ".direnv", ".eggs", ".git", ".hg", ".mypy_cache", ".nox", ".pants.d", ".ruff_cache", ".svn", ".tox", ".venv", "__pypackages__", "_build", "buck-out", "build", "dist", "node_modules", "venv"]`
+
+**Type**: `Vec<FilePattern>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+exclude = [".venv"]
+````
+
+---
+
+#### [`extend_exclude`](#extend_exclude)
+
+A list of file patterns to omit from linting, in addition to those specified by `exclude`.
+
+**Default value**: `[]`
+
+**Type**: `Vec<FilePattern>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# In addition to the standard set of exclusions, omit all tests, plus a specific file.
+extend-exclude = ["tests", "src/bad.py"]
+````
+
+---
+
+#### [`ignore`](#ignore)
+
+A list of check code prefixes to ignore. Prefixes can specify exact checks (like `F841`), entire
+categories (like `F`), or anything in between.
+
+When breaking ties between enabled and disabled checks (via `select` and `ignore`, respectively),
+more specific prefixes override less specific prefixes.
+
+**Default value**: `[]`
+
+**Type**: `Vec<CheckCodePrefix>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Skip unused variable checks (`F841`).
+ignore = ["F841"]
+```
+
+---
+
+#### [`extend_ignore`](#extend_ignore)
+
+A list of check code prefixes to ignore, in addition to those specified by `ignore`.
+
+**Default value**: `[]`
+
+**Type**: `Vec<CheckCodePrefix>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Skip unused variable checks (`F841`).
+extend-ignore = ["F841"]
+```
+
+---
+
+#### [`select`](#select)
+
+A list of check code prefixes to enable. Prefixes can specify exact checks (like `F841`), entire
+categories (like `F`), or anything in between.
+
+When breaking ties between enabled and disabled checks (via `select` and `ignore`, respectively),
+more specific prefixes override less specific prefixes.
+
+**Default value**: `["E", "F"]`
+
+**Type**: `Vec<CheckCodePrefix>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# On top of the defaults (`E`, `F`), enable flake8-bugbear (`B`) and flake8-quotes (`Q`).
+select = ["E", "F", "B", "Q"]
+```
+
+---
+
+#### [`extend_select`](#extend_select)
+
+A list of check code prefixes to enable, in addition to those specified by `select`.
+
+**Default value**: `[]`
+
+**Type**: `Vec<CheckCodePrefix>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# On top of the default `select` (`E`, `F`), enable flake8-bugbear (`B`) and flake8-quotes (`Q`).
+extend-select = ["B", "Q"]
+```
+
+---
+
+#### [`fix`](#fix)
+
+Enable autofix behavior by-default when running `ruff` (overridden by the `--fix` and `--no-fix`
+command-line flags).
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+fix = true
+```
+
+---
+
+#### [`fixable`](#fixable)
+
+A list of check code prefixes to consider autofix-able.
+
+**Default value**: `["A", "ANN", "B", "BLE", "C", "D", "E", "F", "FBT", "I", "M", "N", "Q", "RUF", "S", "T", "U", "W", "YTT"]`
+
+**Type**: `Vec<CheckCodePrefix>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Only allow autofix behavior for `E` and `F` checks.
+fixable = ["E", "F"]
+```
+
+---
+
+#### [`unfixable`](#unfixable)
+
+A list of check code prefixes to consider un-autofix-able.
+
+**Default value**: `[]`
+
+**Type**: `Vec<CheckCodePrefix>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Disable autofix for unused imports (`F401`).
+unfixable = ["F401"]
+```
+
+---
+
+#### [`line_length`](#line_length)
+
+The line length to use when enforcing long-lines violations (like E501).
+
+**Default value**: `88`
+
+**Type**: `usize`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Allow lines to be as long as 120 characters.
+line-length = 120
+```
+
+---
+
+#### [`per_file_ignores`](#per_file_ignores)
+
+A list of mappings from file pattern to check code prefixes to exclude, when considering any
+matching files.
+
+**Default value**: `{}`
+
+**Type**: `HashMap<String, Vec<CheckCodePrefix>>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Ignore `E402` (import violations) in all `__init__.py` files, and in `path/to/file.py`.
+[tool.ruff.per-file-ignores]
+"__init__.py" = ["E402"]
+"path/to/file.py" = ["E402"]
+```
+
+---
+
+#### [`show_source`](#show_source)
+
+Whether to show source code snippets when reporting lint error violations (overridden by the
+`--show-source` command-line flag).
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# By default, always show source code snippets.
+show_source = true
+```
+
+---
+
+#### [`src`](#src)
+
+The source code paths to consider, e.g., when resolving first- vs. third-party imports.
+
+**Default value**: `["."]`
+
+**Type**: `Vec<PathBuf>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Allow imports relative to the "src" and "test" directories.
+src = ["src", "test"]
+```
+
+---
+
+#### [`target_version`](#target_version)
+
+The Python version to target, e.g., when considering automatic code upgrades, like rewriting type
+annotations. Note that the target version will _not_ be inferred from the _current_ Python version,
+and instead must be specified explicitly (as seen below).
+
+**Default value**: `"py310"`
+
+**Type**: `PythonVersion`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+# Always generate Python 3.7-compatible code.
+target-version = "py37"
+```
+
+### `flake8-annotations`
+
+#### [`mypy_init_return`](#mypy_init_return)
+
+Whether to allow the omission of a return type hint for `__init__` if at least one argument is
+annotated.
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-annotations]
+mypy_init_return = true
+```
+
+---
+
+#### [`suppress_dummy_args`](#suppress_dummy_args)
+
+Whether to suppress `ANN000`-level errors for arguments matching the "dummy" variable regex (like
+`_`).
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-annotations]
+suppress_dummy_args = true
+```
+
+---
+
+#### [`suppress_none_returning`](#suppress_none_returning)
+
+Whether to suppress `ANN200`-level errors for functions that meet either of the following criteria:
+
+- Contain no `return` statement.
+- Explicit `return` statement(s) all return `None` (explicitly or implicitly).
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-annotations]
+suppress_none_returning = true
+```
+
+---
+
+#### [`allow_star_arg_any`](#allow_star_arg_any)
+
+Whether to suppress `ANN401` for dynamically typed `*args` and `**kwargs` arguments.
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-annotations]
+allow_star_arg_any = true
+```
+
+### `flake8-bugbear`
+
+#### [`extend_immutable_calls`](#extend_immutable_calls)
+
+Additional callable functions to consider "immutable" when evaluating, e.g., no-mutable-default-argument
+checks (`B006`).
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-bugbear]
+# Allow default arguments like, e.g., `data: List[str] = fastapi.Query(None)`.
+extend-immutable-calls = ["fastapi.Depends", "fastapi.Query"]
+```
+
+### `flake8-quotes`
+
+#### [`inline_quotes`](#inline_quotes)
+
+Quote style to prefer for inline strings (either "single" (`'`) or "double" (`"`)).
+
+**Default value**: `"double"`
+
+**Type**: `Quote`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-quotes]
+inline-quotes = "single"
+```
+
+---
+
+#### [`multiline_quotes`](#multiline_quotes)
+
+Quote style to prefer for multiline strings (either "single" (`'`) or "double" (`"`)).
+
+**Default value**: `"double"`
+
+**Type**: `Quote`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-quotes]
+multiline-quotes = "single"
+```
+
+---
+
+#### [`docstring_quotes`](#docstring_quotes)
+
+Quote style to prefer for docstrings (either "single" (`'`) or "double" (`"`)).
+
+**Default value**: `"double"`
+
+**Type**: `Quote`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-quotes]
+docstring-quotes = "single"
+```
+
+---
+
+#### [`avoid_escape`](#avoid_escape)
+
+Whether to avoid using single quotes if a string contains single quotes, or vice-versa with
+double quotes, as per [PEP8](https://peps.python.org/pep-0008/#string-quotes). This minimizes the
+need to escape quotation marks within strings.
+
+**Default value**: `true`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-quotes]
+# Don't bother trying to avoid escapes.
+avoid-escape = false
+```
+
+### `flake8-tidy-imports`
+
+#### [`ban_relative_imports`](#ban_relative_imports)
+
+Whether to ban all relative imports (`"all"`), or only those imports that extend into the parent
+module and beyond (`"parents"`).
+
+**Default value**: `"parents"`
+
+**Type**: `Strictness`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-tidy-imports]
+# Disallow all relative imports.
+ban-relative-imports = "all"
+```
+
+### `isort`
+
+#### [`known_first_party`](known_first_party)
+
+A list of modules to consider first-party, regardless of whether they can be identified as such
+via introspection of the local filesystem.
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+known-first-party = ["src"]
+```
+
+---
+
+#### [`known_third_party`](known_third_party)
+
+A list of modules to consider third-party, regardless of whether they can be identified as such
+via introspection of the local filesystem.
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+known-third-party = ["fastapi"]
+```
+
+---
+
+#### [`extra_standard_library`](extra_standard_library)
+
+A list of modules to consider standard-library, in addition to those known to Ruff in advance.
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.isort]
+extra-standard-library = ["path"]
+```
+
+### `mccabe`
+
+#### [`max_complexity`](#max_complexity)
+
+The maximum McCabe complexity to allow before triggering `C901` errors.
+
+**Default value**: `10`
+
+**Type**: `usize`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-tidy-imports]
+# Flag errors (`C901`) whenever the complexity level exceeds 5.
+max-complexity = 5
+```
+
+### `pep8-naming`
+
+#### [`ignore_names`](#ignore_names)
+
+A list of names to ignore when considering `pep8-naming` violations.
+
+**Default value**: `["setUp", "tearDown", "setUpClass", "tearDownClass", "setUpModule", "tearDownModule", "asyncSetUp", "asyncTearDown", "setUpTestData", "failureException", "longMessage", "maxDiff"]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.pep8-naming]
+ignore-names = ["callMethod"]
+```
+
+---
+
+#### [`classmethod_decorators`](#classmethod_decorators)
+
+A list of decorators that, when applied to a method, indicate that the method should be treated as
+a class method. For example, Ruff will expect that any method decorated by a decorator in this list
+takes a `cls` argument as its first argument.
+
+**Default value**: `["classmethod"]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.pep8-naming]
+# Allow Pydantic's `@validator` decorator to trigger class method treatment.
+classmethod-decorators = ["classmethod", "pydantic.validator"]
+```
+
+---
+
+#### [`staticmethod_decorators`](#staticmethod_decorators)
+
+A list of decorators that, when applied to a method, indicate that the method should be treated as
+a static method. For example, Ruff will expect that any method decorated by a decorator in this list
+has no `self` or `cls` argument.
+
+**Default value**: `["staticmethod"]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.pep8-naming]
+# Allow a shorthand alias, `@stcmthd`, to trigger static method treatment.
+staticmethod-decorators = ["staticmethod", "stcmthd"]
+```
+
 ## License

 MIT
--- a/flake8_to_ruff/Cargo.lock
+++ b/flake8_to_ruff/Cargo.lock
@@ -771,7 +771,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8_to_ruff"
-version = "0.0.138"
+version = "0.0.142"
 dependencies = [
 "anyhow",
 "clap",
@@ -1975,7 +1975,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.138"
+version = "0.0.142"
 dependencies = [
 "anyhow",
 "bincode",
--- a/flake8_to_ruff/Cargo.toml
+++ b/flake8_to_ruff/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "flake8-to-ruff"
-version = "0.0.138-dev.0"
+version = "0.0.142-dev.0"
 edition = "2021"

 [lib]
--- a/flake8_to_ruff/src/plugin.rs
+++ b/flake8_to_ruff/src/plugin.rs
@@ -10,6 +10,7 @@ pub enum Plugin {
    Flake8Bugbear,
    Flake8Builtins,
    Flake8Comprehensions,
+    Flake8Debugger,
    Flake8Docstrings,
    Flake8TidyImports,
    Flake8Print,
@@ -30,6 +31,7 @@ impl FromStr for Plugin {
            "flake8-bugbear" => Ok(Plugin::Flake8Bugbear),
            "flake8-builtins" => Ok(Plugin::Flake8Builtins),
            "flake8-comprehensions" => Ok(Plugin::Flake8Comprehensions),
+            "flake8-debugger" => Ok(Plugin::Flake8Debugger),
            "flake8-docstrings" => Ok(Plugin::Flake8Docstrings),
            "flake8-tidy-imports" => Ok(Plugin::Flake8TidyImports),
            "flake8-print" => Ok(Plugin::Flake8Print),
@@ -51,9 +53,10 @@ impl Plugin {
            Plugin::Flake8Bugbear => CheckCodePrefix::B,
            Plugin::Flake8Builtins => CheckCodePrefix::A,
            Plugin::Flake8Comprehensions => CheckCodePrefix::C4,
+            Plugin::Flake8Debugger => CheckCodePrefix::T1,
            Plugin::Flake8Docstrings => CheckCodePrefix::D,
            Plugin::Flake8TidyImports => CheckCodePrefix::I25,
-            Plugin::Flake8Print => CheckCodePrefix::T,
+            Plugin::Flake8Print => CheckCodePrefix::T2,
            Plugin::Flake8Quotes => CheckCodePrefix::Q,
            Plugin::Flake8Annotations => CheckCodePrefix::ANN,
            Plugin::Flake8BlindExcept => CheckCodePrefix::BLE,
@@ -69,6 +72,7 @@ impl Plugin {
            Plugin::Flake8Bugbear => vec![CheckCodePrefix::B],
            Plugin::Flake8Builtins => vec![CheckCodePrefix::A],
            Plugin::Flake8Comprehensions => vec![CheckCodePrefix::C4],
+            Plugin::Flake8Debugger => vec![CheckCodePrefix::T1],
            Plugin::Flake8Docstrings => {
                // Use the user-provided docstring.
                for key in ["docstring-convention", "docstring_convention"] {
@@ -86,7 +90,7 @@ impl Plugin {
                DocstringConvention::PEP8.select()
            }
            Plugin::Flake8TidyImports => vec![CheckCodePrefix::I25],
-            Plugin::Flake8Print => vec![CheckCodePrefix::T],
+            Plugin::Flake8Print => vec![CheckCodePrefix::T2],
            Plugin::Flake8Quotes => vec![CheckCodePrefix::Q],
            Plugin::Flake8Annotations => vec![CheckCodePrefix::ANN],
            Plugin::Flake8BlindExcept => vec![CheckCodePrefix::BLE],
@@ -364,6 +368,7 @@ pub fn infer_plugins_from_codes(codes: &BTreeSet<CheckCodePrefix>) -> Vec<Plugin
        Plugin::Flake8Bugbear,
        Plugin::Flake8Builtins,
        Plugin::Flake8Comprehensions,
+        Plugin::Flake8Debugger,
        Plugin::Flake8Docstrings,
        Plugin::Flake8TidyImports,
        Plugin::Flake8Print,
--- a/resources/test/fixtures/B023.py
+++ b/resources/test/fixtures/B023.py
@@ -0,0 +1,82 @@
+"""
+Should emit:
+B023 - on lines 12, 13, 16, 28, 29, 30, 31, 40, 42, 50, 51, 52, 53, 61, 68.
+"""
+
+functions = []
+z = 0
+
+for x in range(3):
+    y = x + 1
+    # Subject to late-binding problems
+    functions.append(lambda: x)
+    functions.append(lambda: y)  # not just the loop var
+
+    def f_bad_1():
+        return x
+
+    # Actually OK
+    functions.append(lambda x: x * 2)
+    functions.append(lambda x=x: x)
+    functions.append(lambda: z)  # OK because not assigned in the loop
+
+    def f_ok_1(x):
+        return x * 2
+
+
+def check_inside_functions_too():
+    ls = [lambda: x for x in range(2)]
+    st = {lambda: x for x in range(2)}
+    gn = (lambda: x for x in range(2))
+    dt = {x: lambda: x for x in range(2)}
+
+
+async def pointless_async_iterable():
+    yield 1
+
+
+async def container_for_problems():
+    async for x in pointless_async_iterable():
+        functions.append(lambda: x)
+
+    [lambda: x async for x in pointless_async_iterable()]
+
+
+a = 10
+b = 0
+while True:
+    a = a_ = a - 1
+    b += 1
+    functions.append(lambda: a)
+    functions.append(lambda: a_)
+    functions.append(lambda: b)
+    functions.append(lambda: c)  # not a name error because of late binding!
+    c: bool = a > 3
+    if not c:
+        break
+
+# Nested loops should not duplicate reports
+for j in range(2):
+    for k in range(3):
+        lambda: j * k
+
+
+for j, k, l in [(1, 2, 3)]:
+
+    def f():
+        j = None  # OK because it's an assignment
+        [l for k in range(2)]  # error for l, not for k
+
+        assert a and functions
+
+    a.attribute = 1  # modifying an attribute doesn't make it a loop variable
+    functions[0] = lambda: None  # same for an element
+
+for var in range(2):
+
+    def explicit_capture(captured=var):
+        return captured
+
+
+for i in range(3):
+    lambda: f"{i}"
--- a/resources/test/fixtures/E501.py
+++ b/resources/test/fixtures/E501.py
@@ -49,3 +49,6 @@ sit amet  consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labor
 sit amet  consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
 """,  # noqa: E501
 }
+
+# OK
+# A very long URL: https://loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong.url.com
--- a/resources/test/fixtures/F502.py
+++ b/resources/test/fixtures/F502.py
@@ -0,0 +1,13 @@
+dog = {"bob": "bob"}
+
+"%(bob)s" % dog
+"%(bob)s" % {"bob": "bob"}
+"%(bob)s" % {**{"bob": "bob"}}
+"%(bob)s" % ["bob"]  # F202
+"%(bob)s" % ("bob",)  # F202
+"%(bob)s" % {"bob"}  # F202
+"%(bob)s" % [*["bob"]]  # F202
+"%(bob)s" % {"bob": "bob" for _ in range(1)}
+"%(bob)s" % ["bob" for _ in range(1)]  # F202
+"%(bob)s" % ("bob" for _ in range(1))  # F202
+"%(bob)s" % {"bob" for _ in range(1)}  # F202
--- a/resources/test/fixtures/F503.py
+++ b/resources/test/fixtures/F503.py
@@ -0,0 +1,26 @@
+dog = {"bob": "bob"}
+
+# Single placeholder always fine
+"%s" % dog
+"%s" % {"bob": "bob"}
+"%s" % {**{"bob": "bob"}}
+"%s" % ["bob"]
+"%s" % ("bob",)
+"%s" % {"bob"}
+"%s" % [*["bob"]]
+"%s" % {"bob": "bob" for _ in range(1)}
+"%s" % ["bob" for _ in range(1)]
+"%s" % ("bob" for _ in range(1))
+"%s" % {"bob" for _ in range(1)}
+# Multiple placeholders
+"%s %s" % dog
+"%s %s" % {"bob": "bob"}  # F503
+"%s %s" % {**{"bob": "bob"}}  # F503
+"%s %s" % ["bob"]
+"%s %s" % ("bob",)
+"%s %s" % {"bob"}
+"%s %s" % [*["bob"]]
+"%s %s" % {"bob": "bob" for _ in range(1)}  # F503
+"%s %s" % ["bob" for _ in range(1)]
+"%s %s" % ("bob" for _ in range(1))
+"%s %s" % {"bob" for _ in range(1)}
--- a/resources/test/fixtures/F504.py
+++ b/resources/test/fixtures/F504.py
@@ -0,0 +1,6 @@
+# Ruff has no way of knowing if the following are F505s
+a = "wrong"
+"%(a)s %(c)s" % {a: "?", "b": "!"}  # F504 ("b" not used)
+
+hidden = {"a": "!"}
+"%(a)s %(c)s" % {"x": 1, **hidden}  # Ok (cannot see through splat)
--- a/resources/test/fixtures/F50x.py
+++ b/resources/test/fixtures/F50x.py
@@ -0,0 +1,25 @@
+'%(foo)' % {'foo': 'bar'}  # F501
+'%s %(foo)s' % {'foo': 'bar'}  # F506
+'%(foo)s %s' % {'foo': 'bar'}  # F506
+'%j' % (1,)  # F509
+'%s %s' % (1,)  # F507
+'%s %s' % (1, 2, 3)  # F507
+'%(bar)s' % {}  # F505
+'%(bar)s' % {'bar': 1, 'baz': 2}  # F504
+'%(bar)s' % (1, 2, 3)  # F502
+'%s %s' % {'k': 'v'}  # F503
+'%(bar)*s' % {'bar': 'baz'}  # F506, F508
+
+# ok: single %s with mapping
+'%s' % {'foo': 'bar', 'baz': 'womp'}
+# ok: %% should not count towards placeholder count
+'%% %s %% %s' % (1, 2)
+# ok: * consumes one positional argument
+'%.*f' % (2, 1.1234)
+'%*.*f' % (5, 2, 3.1234)
+# ok *args and **kwargs
+a = []
+'%s %s' % [*a]
+'%s %s' % (*a,)
+k = {}
+'%(k)s' % {**k}
--- a/resources/test/fixtures/F521.py
+++ b/resources/test/fixtures/F521.py
@@ -8,14 +8,6 @@
 "{foo..}".format(foo=1)
 "{foo..bar}".format(foo=1)

-# "{} {1}".format(1, 2)  # F525
-# "{0} {}".format(1, 2)  # F525
-# "{}".format(1, 2)  # F523
-# "{}".format(1, bar=2)  # F522
-# "{} {}".format(1)  # F524
-# "{2}".format()  # F524
-# "{bar}".format()  # F524
-
 # The following are all "good" uses of .format
 "{.__class__}".format("")
 "{foo[bar]}".format(foo={"bar": "barv"})
--- a/resources/test/fixtures/F522.py
+++ b/resources/test/fixtures/F522.py
@@ -0,0 +1,4 @@
+"{}".format(1, bar=2)  # F522
+"{bar}{}".format(1, bar=2, spam=3)  # F522
+"{bar:{spam}}".format(bar=2, spam=3)  # No issues
+"{bar:{spam}}".format(bar=2, spam=3, eggs=4, ham=5)  # F522
--- a/resources/test/fixtures/F523.py
+++ b/resources/test/fixtures/F523.py
@@ -0,0 +1,12 @@
+# With indexes
+"{0}".format(1, 2)  # F523
+"{1}".format(1, 2, 3)  # F523
+"{1:{0}}".format(1, 2)  # No issues
+"{1:{0}}".format(1, 2, 3)  # F523
+"{0}{2}".format(1, 2)  # F523, # F524
+
+# With no indexes
+"{}".format(1, 2)  # F523
+"{}".format(1, 2, 3)  # F523
+"{:{}}".format(1, 2)  # No issues
+"{:{}}".format(1, 2, 3)  # F523
--- a/resources/test/fixtures/F524.py
+++ b/resources/test/fixtures/F524.py
@@ -0,0 +1,6 @@
+"{} {}".format(1)  # F524
+"{2}".format()  # F524
+"{bar}".format()  # F524
+"{0} {bar}".format(1)  # F524
+"{0} {bar}".format()  # F524
+"{bar} {0}".format()  # F524
--- a/resources/test/fixtures/F525.py
+++ b/resources/test/fixtures/F525.py
@@ -0,0 +1,2 @@
+"{} {1}".format(1, 2)  # F525
+"{0} {}".format(1, 2)  # F523, F525
--- a/resources/test/fixtures/F821_3.py
+++ b/resources/test/fixtures/F821_3.py
@@ -12,3 +12,13 @@ x: dict["key", "value"]

 # OK
 x: dict[str, str]
+
+# OK
+def unimportant(name):
+    pass
+
+
+def dang(dict, set, list):
+    unimportant(name=dict["name"])
+    unimportant(name=set["name"])
+    unimportant(name=list["name"])
--- a/resources/test/fixtures/T100.py
+++ b/resources/test/fixtures/T100.py
@@ -0,0 +1,14 @@
+breakpoint()
+
+
+import pdb
+from builtins import breakpoint
+from pdb import set_trace as st
+from celery.contrib.rdb import set_trace
+from celery.contrib import rdb
+import celery.contrib.rdb
+
+
+breakpoint()
+st()
+set_trace()
--- a/resources/test/fixtures/U009_0.py
+++ b/resources/test/fixtures/U009_0.py
@@ -1,3 +1,3 @@
 # coding=utf8

-print('Hello world')
+print("Hello world")
--- a/resources/test/fixtures/U009_4.py
+++ b/resources/test/fixtures/U009_4.py
@@ -0,0 +1,3 @@
+# coding=utf8 # noqa: U009
+
+print("Hello world")
--- a/resources/test/fixtures/U015.py
+++ b/resources/test/fixtures/U015.py
@@ -36,3 +36,45 @@ with open("foo", "U") as fa, open("bar", "U") as fb:
    pass
 with open("foo", "Ub") as fa, open("bar", "Ub") as fb:
    pass
+
+open("foo", mode="U")
+open(name="foo", mode="U")
+open(mode="U", name="foo")
+
+with open("foo", mode="U") as f:
+    pass
+with open(name="foo", mode="U") as f:
+    pass
+with open(mode="U", name="foo") as f:
+    pass
+
+open("foo", mode="Ub")
+open(name="foo", mode="Ub")
+open(mode="Ub", name="foo")
+
+with open("foo", mode="Ub") as f:
+    pass
+with open(name="foo", mode="Ub") as f:
+    pass
+with open(mode="Ub", name="foo") as f:
+    pass
+
+open(file="foo", mode='U', buffering=- 1, encoding=None, errors=None, newline=None, closefd=True, opener=None)
+open(file="foo", buffering=- 1, encoding=None, errors=None, newline=None, closefd=True, opener=None, mode='U')
+open(file="foo", buffering=- 1, encoding=None, errors=None, mode='U', newline=None, closefd=True, opener=None)
+open(mode='U', file="foo", buffering=- 1, encoding=None, errors=None, newline=None, closefd=True, opener=None)
+
+open(file="foo", mode='Ub', buffering=- 1, encoding=None, errors=None, newline=None, closefd=True, opener=None)
+open(file="foo", buffering=- 1, encoding=None, errors=None, newline=None, closefd=True, opener=None, mode='Ub')
+open(file="foo", buffering=- 1, encoding=None, errors=None, mode='Ub', newline=None, closefd=True, opener=None)
+open(mode='Ub', file="foo", buffering=- 1, encoding=None, errors=None, newline=None, closefd=True, opener=None)
+
+open = 1
+open("foo", "U")
+open("foo", "Ur")
+open("foo", "Ub")
+open("foo", "rUb")
+open("foo", "r")
+open("foo", "rt")
+open("f", "r", encoding="UTF-8")
+open("f", "wt")
--- a/resources/test/fixtures/canonical_google_examples.py
+++ b/resources/test/fixtures/canonical_google_examples.py
@@ -44,7 +44,7 @@ expectation.expected.add((
@expect("D407: Missing dashed underline after section ('Returns')",
        arg_count=3)
@expect("D413: Missing blank line after last section ('Raises')", arg_count=3)
-def fetch_bigtable_rows(big_table, keys, other_silly_variable=None):
+def fetch_bigtable_rows(big_table, keys, other_silly_variable=None, **kwargs):
    """Fetches rows from a Bigtable.

    Retrieves rows pertaining to the given keys from the Table instance
@@ -57,6 +57,7 @@ def fetch_bigtable_rows(big_table, keys, other_silly_variable=None):
            to fetch.
        other_silly_variable: Another optional variable, that has a much
            longer name than the other args, and which does nothing.
+        **kwargs: More keyword arguments.

    Returns:
        A dict mapping keys to the corresponding table row data
--- a/resources/test/fixtures/canonical_numpy_examples.py
+++ b/resources/test/fixtures/canonical_numpy_examples.py
@@ -73,7 +73,7 @@ expectation.expected.add((
        "(found 'A')", arg_count=3)
@expect("D413: Missing blank line after last section ('Examples')",
        arg_count=3)
-def foo(var1, var2, long_var_name='hi'):
+def foo(var1, var2, long_var_name='hi', **kwargs):
    r"""A one-line summary that does not use variable names.

    Several sentences providing an extended description. Refer to
@@ -91,6 +91,8 @@ def foo(var1, var2, long_var_name='hi'):
        detail, e.g. ``(N,) ndarray`` or ``array_like``.
    long_var_name : {'hi', 'ho'}, optional
        Choices in brackets, default first when optional.
+    **kwargs : int
+        More keyword arguments.

    Returns
    -------
--- a/ruff_dev/Cargo.toml
+++ b/ruff_dev/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruff_dev"
-version = "0.0.138"
+version = "0.0.142"
 edition = "2021"

 [dependencies]
--- a/ruff_dev/src/generate_check_code_prefix.rs
+++ b/ruff_dev/src/generate_check_code_prefix.rs
@@ -117,7 +117,8 @@ pub fn main(cli: &Cli) -> Result<()> {

    // Construct the output contents.
    let mut output = String::new();
-    output.push_str("//! File automatically generated by examples/generate_check_code_prefix.rs.");
+    output
+        .push_str("//! File automatically generated by `examples/generate_check_code_prefix.rs`.");
    output.push('\n');
    output.push('\n');
    output.push_str("use serde::{{Serialize, Deserialize}};");
@@ -129,6 +130,21 @@ pub fn main(cli: &Cli) -> Result<()> {
    output.push('\n');
    output.push('\n');
    output.push_str(&scope.to_string());
+    output.push('\n');
+    output.push('\n');
+
+    // Add the list of output categories (not generated).
+    output.push_str("pub const CATEGORIES: &[CheckCodePrefix] = &[");
+    output.push('\n');
+    for prefix in prefix_to_codes.keys() {
+        if prefix.chars().all(char::is_alphabetic) {
+            output.push_str(&format!("CheckCodePrefix::{prefix},"));
+            output.push('\n');
+        }
+    }
+    output.push_str("];");
+    output.push('\n');
+    output.push('\n');

    // Write the output to `src/checks_gen.rs` (or stdout).
    if cli.dry_run {
--- a/src/ast/helpers.rs
+++ b/src/ast/helpers.rs
@@ -1,7 +1,9 @@
 use once_cell::sync::Lazy;
 use regex::Regex;
 use rustc_hash::{FxHashMap, FxHashSet};
-use rustpython_ast::{Excepthandler, ExcepthandlerKind, Expr, ExprKind, Location, Stmt, StmtKind};
+use rustpython_ast::{
+    Arguments, Excepthandler, ExcepthandlerKind, Expr, ExprKind, Location, Stmt, StmtKind,
+};

 use crate::ast::types::Range;
 use crate::SourceCodeLocator;
@@ -213,6 +215,27 @@ pub fn extract_handler_names(handlers: &[Excepthandler]) -> Vec<Vec<&str>> {
    handler_names
 }

+/// Return the set of all bound argument names.
+pub fn collect_arg_names<'a>(arguments: &'a Arguments) -> FxHashSet<&'a str> {
+    let mut arg_names: FxHashSet<&'a str> = FxHashSet::default();
+    for arg in &arguments.posonlyargs {
+        arg_names.insert(arg.node.arg.as_str());
+    }
+    for arg in &arguments.args {
+        arg_names.insert(arg.node.arg.as_str());
+    }
+    if let Some(arg) = &arguments.vararg {
+        arg_names.insert(arg.node.arg.as_str());
+    }
+    for arg in &arguments.kwonlyargs {
+        arg_names.insert(arg.node.arg.as_str());
+    }
+    if let Some(arg) = &arguments.kwarg {
+        arg_names.insert(arg.node.arg.as_str());
+    }
+    arg_names
+}
+
 /// Returns `true` if a call is an argumented `super` invocation.
 pub fn is_super_call_with_arguments(func: &Expr, args: &[Expr]) -> bool {
    // Check: is this a `super` call?
--- a/src/ast/types.rs
+++ b/src/ast/types.rs
@@ -1,7 +1,7 @@
 use std::sync::atomic::{AtomicUsize, Ordering};

 use rustc_hash::FxHashMap;
-use rustpython_ast::{Expr, Keyword};
+use rustpython_ast::{Expr, Keyword, Stmt};
 use rustpython_parser::ast::{Located, Location};

 fn id() -> usize {
@@ -9,6 +9,12 @@ fn id() -> usize {
    COUNTER.fetch_add(1, Ordering::Relaxed)
 }

+#[derive(Clone)]
+pub enum Node<'a> {
+    Stmt(&'a Stmt),
+    Expr(&'a Expr),
+}
+
 #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Range {
    pub location: Location,
--- a/src/check_ast.rs
+++ b/src/check_ast.rs
@@ -19,8 +19,8 @@ use crate::ast::helpers::{
 use crate::ast::operations::extract_all_names;
 use crate::ast::relocate::relocate_expr;
 use crate::ast::types::{
-    Binding, BindingContext, BindingKind, ClassScope, FunctionScope, ImportKind, Range, Scope,
-    ScopeKind,
+    Binding, BindingContext, BindingKind, ClassScope, FunctionScope, ImportKind, Node, Range,
+    Scope, ScopeKind,
 };
 use crate::ast::visitor::{walk_excepthandler, walk_withitem, Visitor};
 use crate::ast::{helpers, operations, visitor};
@@ -33,11 +33,13 @@ use crate::python::typing::SubscriptKind;
 use crate::settings::types::PythonVersion;
 use crate::settings::Settings;
 use crate::source_code_locator::SourceCodeLocator;
+use crate::vendored::cformat::{CFormatError, CFormatErrorType};
 use crate::visibility::{module_visibility, transition_scope, Modifier, Visibility, VisibleScope};
 use crate::{
    docstrings, flake8_2020, flake8_annotations, flake8_bandit, flake8_blind_except,
-    flake8_boolean_trap, flake8_bugbear, flake8_builtins, flake8_comprehensions, flake8_print,
-    flake8_tidy_imports, mccabe, pep8_naming, pycodestyle, pydocstyle, pyflakes, pyupgrade, rules,
+    flake8_boolean_trap, flake8_bugbear, flake8_builtins, flake8_comprehensions, flake8_debugger,
+    flake8_print, flake8_tidy_imports, mccabe, pep8_naming, pycodestyle, pydocstyle, pyflakes,
+    pyupgrade, rules,
 };

 const GLOBAL_SCOPE_INDEX: usize = 0;
@@ -83,6 +85,8 @@ pub struct Checker<'a> {
    futures_allowed: bool,
    annotations_future_enabled: bool,
    except_handlers: Vec<Vec<Vec<&'a str>>>,
+    // Check-specific state.
+    pub(crate) seen_b023: Vec<&'a Expr>,
 }

 impl<'a> Checker<'a> {
@@ -127,6 +131,8 @@ impl<'a> Checker<'a> {
            futures_allowed: true,
            annotations_future_enabled: false,
            except_handlers: vec![],
+            // Check-specific state.
+            seen_b023: vec![],
        }
    }

@@ -173,6 +179,15 @@ impl<'a> Checker<'a> {
            || (typing::in_extensions(target)
                && match_call_path(call_path, "typing_extensions", target, &self.from_imports))
    }
+
+    /// Return `true` if `member` is bound as a builtin.
+    pub fn is_builtin(&self, member: &str) -> bool {
+        self.current_scopes()
+            .find_map(|scope| scope.values.get(member))
+            .map_or(false, |binding| {
+                matches!(binding.kind, BindingKind::Builtin)
+            })
+    }
 }

 impl<'a, 'b> Visitor<'b> for Checker<'a>
@@ -622,6 +637,15 @@ where
                        );
                    }

+                    // flake8-debugger
+                    if self.settings.enabled.contains(&CheckCode::T100) {
+                        if let Some(check) =
+                            flake8_debugger::checks::debugger_import(stmt, None, &alias.node.name)
+                        {
+                            self.add_check(check);
+                        }
+                    }
+
                    if let Some(asname) = &alias.node.asname {
                        for alias in names {
                            if let Some(asname) = &alias.node.asname {
@@ -690,12 +714,7 @@ where
                        self.from_imports
                            .entry(module)
                            .or_insert_with(FxHashSet::default)
-                            .extend(
-                                names
-                                    .iter()
-                                    .filter(|alias| alias.node.asname.is_none())
-                                    .map(|alias| alias.node.name.as_str()),
-                            );
+                            .extend(names.iter().map(|alias| alias.node.name.as_str()));
                    }
                    for alias in names {
                        if let Some(asname) = &alias.node.asname {
@@ -851,6 +870,17 @@ where
                        }
                    }

+                    // flake8-debugger
+                    if self.settings.enabled.contains(&CheckCode::T100) {
+                        if let Some(check) = flake8_debugger::checks::debugger_import(
+                            stmt,
+                            module.as_ref().map(String::as_str),
+                            &alias.node.name,
+                        ) {
+                            self.add_check(check);
+                        }
+                    }
+
                    if let Some(asname) = &alias.node.asname {
                        if self.settings.enabled.contains(&CheckCode::N811) {
                            if let Some(check) =
@@ -951,8 +981,16 @@ where
                    flake8_bugbear::plugins::assert_raises_exception(self, stmt, items);
                }
            }
+            StmtKind::While { .. } => {
+                if self.settings.enabled.contains(&CheckCode::B023) {
+                    flake8_bugbear::plugins::function_uses_loop_variable(self, &Node::Stmt(stmt));
+                }
+            }
            StmtKind::For {
                target, body, iter, ..
+            }
+            | StmtKind::AsyncFor {
+                target, body, iter, ..
            } => {
                if self.settings.enabled.contains(&CheckCode::B007) {
                    flake8_bugbear::plugins::unused_loop_control_variable(self, target, body);
@@ -960,6 +998,9 @@ where
                if self.settings.enabled.contains(&CheckCode::B020) {
                    flake8_bugbear::plugins::loop_variable_overrides_iterator(self, target, iter);
                }
+                if self.settings.enabled.contains(&CheckCode::B023) {
+                    flake8_bugbear::plugins::function_uses_loop_variable(self, &Node::Stmt(stmt));
+                }
            }
            StmtKind::Try { handlers, .. } => {
                if self.settings.enabled.contains(&CheckCode::F707) {
@@ -1244,20 +1285,73 @@ where
                keywords,
            } => {
                // pyflakes
-                if let ExprKind::Attribute { value, attr, .. } = &func.node {
-                    if let ExprKind::Constant {
-                        value: Constant::Str(value),
-                        ..
-                    } = &value.node
-                    {
-                        if attr == "format" {
-                            // "...".format(...) call
-                            if self.settings.enabled.contains(&CheckCode::F521) {
+                if self.settings.enabled.contains(&CheckCode::F521)
+                    || self.settings.enabled.contains(&CheckCode::F522)
+                    || self.settings.enabled.contains(&CheckCode::F523)
+                    || self.settings.enabled.contains(&CheckCode::F524)
+                    || self.settings.enabled.contains(&CheckCode::F525)
+                {
+                    if let ExprKind::Attribute { value, attr, .. } = &func.node {
+                        if let ExprKind::Constant {
+                            value: Constant::Str(value),
+                            ..
+                        } = &value.node
+                        {
+                            if attr == "format" {
+                                // "...".format(...) call
                                let location = Range::from_located(expr);
-                                if let Some(check) =
-                                    pyflakes::checks::string_dot_format_invalid(value, location)
-                                {
-                                    self.add_check(check);
+                                match pyflakes::format::FormatSummary::try_from(value.as_ref()) {
+                                    Err(e) => {
+                                        if self.settings.enabled.contains(&CheckCode::F521) {
+                                            self.add_check(Check::new(
+                                                CheckKind::StringDotFormatInvalidFormat(
+                                                    e.to_string(),
+                                                ),
+                                                location,
+                                            ));
+                                        }
+                                    }
+                                    Ok(summary) => {
+                                        if self.settings.enabled.contains(&CheckCode::F522) {
+                                            if let Some(check) =
+                                                pyflakes::checks::string_dot_format_extra_named_arguments(
+                                                    &summary, keywords, location,
+                                                )
+                                            {
+                                                self.add_check(check);
+                                            }
+                                        }
+
+                                        if self.settings.enabled.contains(&CheckCode::F523) {
+                                            if let Some(check) =
+                                                pyflakes::checks::string_dot_format_extra_positional_arguments(
+                                                    &summary, args, location,
+                                                )
+                                            {
+                                                self.add_check(check);
+                                            }
+                                        }
+
+                                        if self.settings.enabled.contains(&CheckCode::F524) {
+                                            if let Some(check) =
+                                                pyflakes::checks::string_dot_format_missing_argument(
+                                                    &summary, args, keywords, location,
+                                                )
+                                            {
+                                                self.add_check(check);
+                                            }
+                                        }
+
+                                        if self.settings.enabled.contains(&CheckCode::F525) {
+                                            if let Some(check) =
+                                                pyflakes::checks::string_dot_format_mixing_automatic(
+                                                    &summary, location,
+                                                )
+                                            {
+                                                self.add_check(check);
+                                            }
+                                        }
+                                    }
                                }
                            }
                        }
@@ -1557,6 +1651,18 @@ where
                    }
                }

+                // flake8-debugger
+                if self.settings.enabled.contains(&CheckCode::T100) {
+                    if let Some(check) = flake8_debugger::checks::debugger_call(
+                        expr,
+                        func,
+                        &self.from_imports,
+                        &self.import_aliases,
+                    ) {
+                        self.add_check(check);
+                    }
+                }
+
                // Ruff
                if self.settings.enabled.contains(&CheckCode::RUF101) {
                    rules::plugins::convert_exit_to_sys_exit(self, func);
@@ -1611,6 +1717,116 @@ where
                    pyflakes::plugins::invalid_print_syntax(self, left);
                }
            }
+            ExprKind::BinOp {
+                left,
+                op: Operator::Mod,
+                right,
+            } => {
+                if let ExprKind::Constant {
+                    value: Constant::Str(value),
+                    ..
+                } = &left.node
+                {
+                    if self.settings.enabled.contains(&CheckCode::F501)
+                        || self.settings.enabled.contains(&CheckCode::F502)
+                        || self.settings.enabled.contains(&CheckCode::F503)
+                        || self.settings.enabled.contains(&CheckCode::F504)
+                        || self.settings.enabled.contains(&CheckCode::F505)
+                        || self.settings.enabled.contains(&CheckCode::F506)
+                        || self.settings.enabled.contains(&CheckCode::F507)
+                        || self.settings.enabled.contains(&CheckCode::F508)
+                        || self.settings.enabled.contains(&CheckCode::F509)
+                    {
+                        let location = Range::from_located(expr);
+                        match pyflakes::cformat::CFormatSummary::try_from(value.as_ref()) {
+                            Err(CFormatError {
+                                typ: CFormatErrorType::UnsupportedFormatChar(c),
+                                ..
+                            }) => {
+                                if self.settings.enabled.contains(&CheckCode::F509) {
+                                    self.add_check(Check::new(
+                                        CheckKind::PercentFormatUnsupportedFormatCharacter(c),
+                                        location,
+                                    ));
+                                }
+                            }
+                            Err(e) => {
+                                if self.settings.enabled.contains(&CheckCode::F501) {
+                                    self.add_check(Check::new(
+                                        CheckKind::PercentFormatInvalidFormat(e.to_string()),
+                                        location,
+                                    ));
+                                }
+                            }
+                            Ok(summary) => {
+                                if self.settings.enabled.contains(&CheckCode::F502) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_expected_mapping(
+                                            &summary, right, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                                if self.settings.enabled.contains(&CheckCode::F503) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_expected_sequence(
+                                            &summary, right, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                                if self.settings.enabled.contains(&CheckCode::F504) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_extra_named_arguments(
+                                            &summary, right, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                                if self.settings.enabled.contains(&CheckCode::F505) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_missing_arguments(
+                                            &summary, right, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                                if self.settings.enabled.contains(&CheckCode::F506) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_mixed_positional_and_named(
+                                            &summary, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                                if self.settings.enabled.contains(&CheckCode::F507) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_positional_count_mismatch(
+                                            &summary, right, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                                if self.settings.enabled.contains(&CheckCode::F508) {
+                                    if let Some(check) =
+                                        pyflakes::checks::percent_format_star_requires_sequence(
+                                            &summary, right, location,
+                                        )
+                                    {
+                                        self.add_check(check);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
            ExprKind::UnaryOp { op, operand } => {
                let check_not_in = self.settings.enabled.contains(&CheckCode::E713);
                let check_not_is = self.settings.enabled.contains(&CheckCode::E714);
@@ -1757,9 +1973,15 @@ where
                        self.add_check(check);
                    };
                }
+                if self.settings.enabled.contains(&CheckCode::B023) {
+                    flake8_bugbear::plugins::function_uses_loop_variable(self, &Node::Expr(expr));
+                }
                self.push_scope(Scope::new(ScopeKind::Generator));
            }
            ExprKind::GeneratorExp { .. } | ExprKind::DictComp { .. } => {
+                if self.settings.enabled.contains(&CheckCode::B023) {
+                    flake8_bugbear::plugins::function_uses_loop_variable(self, &Node::Expr(expr));
+                }
                self.push_scope(Scope::new(ScopeKind::Generator));
            }
            _ => {}
@@ -1890,6 +2112,7 @@ where
                        value,
                        &self.from_imports,
                        &self.import_aliases,
+                        |member| self.is_builtin(member),
                    ) {
                        Some(subscript) => {
                            match subscript {
--- a/src/check_lines.rs
+++ b/src/check_lines.rs
@@ -16,13 +16,16 @@ use crate::settings::Settings;
 static CODING_COMMENT_REGEX: Lazy<Regex> =
    Lazy::new(|| Regex::new(r"^[ \t\f]*#.*?coding[:=][ \t]*utf-?8").expect("Invalid regex"));

+static URL_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"^https?://\S+$").expect("Invalid regex"));
+
 /// Whether the given line is too long and should be reported.
 fn should_enforce_line_length(line: &str, length: usize, limit: usize) -> bool {
    if length > limit {
        let mut chunks = line.split_whitespace();
        if let (Some(first), Some(_)) = (chunks.next(), chunks.next()) {
-            // Do not enforce the line length for commented lines with a single word
-            !(first == "#" && chunks.next().is_none())
+            // Do not enforce the line length for commented lines that end with a URL
+            // or contain only a single word.
+            !(first == "#" && chunks.last().map_or(false, |c| URL_REGEX.is_match(c)))
        } else {
            // Single word / no printable chars - no way to make the line shorter
            false
@@ -38,6 +41,7 @@ pub fn check_lines(
    noqa_line_for: &IntMap<usize, usize>,
    settings: &Settings,
    autofix: bool,
+    ignore_noqa: bool,
 ) {
    let enforce_unnecessary_coding_comment = settings.enabled.contains(&CheckCode::U009);
    let enforce_line_too_long = settings.enabled.contains(&CheckCode::E501);
@@ -53,6 +57,30 @@ pub fn check_lines(
        assert!(check.location.row() >= 1);
    }

+    macro_rules! add_if {
+        ($check:expr, $noqa:expr) => {{
+            match $noqa {
+                (Directive::All(..), matches) => {
+                    matches.push($check.kind.code().as_ref());
+                    if ignore_noqa {
+                        line_checks.push($check);
+                    }
+                }
+                (Directive::Codes(.., codes), matches) => {
+                    if codes.contains(&$check.kind.code().as_ref()) {
+                        matches.push($check.kind.code().as_ref());
+                        if ignore_noqa {
+                            line_checks.push($check);
+                        }
+                    } else {
+                        line_checks.push($check);
+                    }
+                }
+                (Directive::None, ..) => line_checks.push($check),
+            }
+        }};
+    }
+
    let lines: Vec<&str> = contents.lines().collect();
    for (lineno, line) in lines.iter().enumerate() {
        // Grab the noqa (logical) line number for the current (physical) line.
@@ -65,21 +93,24 @@ pub fn check_lines(
            if lineno < 2 {
                // PEP3120 makes utf-8 the default encoding.
                if CODING_COMMENT_REGEX.is_match(line) {
-                    let line_length = line.len();
                    let mut check = Check::new(
                        CheckKind::PEP3120UnnecessaryCodingComment,
                        Range {
                            location: Location::new(lineno + 1, 0),
-                            end_location: Location::new(lineno + 1, line_length + 1),
+                            end_location: Location::new(lineno + 2, 0),
                        },
                    );
                    if autofix && settings.fixable.contains(check.kind.code()) {
                        check.amend(Fix::deletion(
                            Location::new(lineno + 1, 0),
-                            Location::new(lineno + 1, line_length + 1),
+                            Location::new(lineno + 2, 0),
                        ));
                    }
-                    line_checks.push(check);
+
+                    let noqa = noqa_directives.entry(noqa_lineno).or_insert_with(|| {
+                        (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![])
+                    });
+                    add_if!(check, noqa);
                }
            }
        }
@@ -109,7 +140,7 @@ pub fn check_lines(
                        ignored.push(index);
                    }
                }
-                (Directive::None, _) => {}
+                (Directive::None, ..) => {}
            }
        }

@@ -117,10 +148,6 @@ pub fn check_lines(
        if enforce_line_too_long {
            let line_length = line.chars().count();
            if should_enforce_line_length(line, line_length, settings.line_length) {
-                let noqa = noqa_directives
-                    .entry(noqa_lineno)
-                    .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));
-
                let check = Check::new(
                    CheckKind::LineTooLong(line_length, settings.line_length),
                    Range {
@@ -129,35 +156,19 @@ pub fn check_lines(
                    },
                );

-                match noqa {
-                    (Directive::All(..), matches) => {
-                        matches.push(check.kind.code().as_ref());
-                    }
-                    (Directive::Codes(.., codes), matches) => {
-                        if codes.contains(&check.kind.code().as_ref()) {
-                            matches.push(check.kind.code().as_ref());
-                        } else {
-                            line_checks.push(check);
-                        }
-                    }
-                    (Directive::None, _) => line_checks.push(check),
-                }
+                let noqa = noqa_directives
+                    .entry(noqa_lineno)
+                    .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));
+                add_if!(check, noqa);
            }
        }
    }

-    // Enforce newlines at end of files.
+    // Enforce newlines at end of files (W292).
    if settings.enabled.contains(&CheckCode::W292) && !contents.ends_with('\n') {
        // Note: if `lines.last()` is `None`, then `contents` is empty (and so we don't
        // want to raise W292 anyway).
        if let Some(line) = lines.last() {
-            let lineno = lines.len() - 1;
-            let noqa_lineno = noqa_line_for.get(&(lineno + 1)).unwrap_or(&(lineno + 1)) - 1;
-
-            let noqa = noqa_directives
-                .entry(noqa_lineno)
-                .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));
-
            let check = Check::new(
                CheckKind::NoNewLineAtEndOfFile,
                Range {
@@ -166,23 +177,16 @@ pub fn check_lines(
                },
            );

-            match noqa {
-                (Directive::All(..), matches) => {
-                    matches.push(check.kind.code().as_ref());
-                }
-                (Directive::Codes(.., codes), matches) => {
-                    if codes.contains(&check.kind.code().as_ref()) {
-                        matches.push(check.kind.code().as_ref());
-                    } else {
-                        line_checks.push(check);
-                    }
-                }
-                (Directive::None, _) => line_checks.push(check),
-            }
+            let lineno = lines.len() - 1;
+            let noqa_lineno = noqa_line_for.get(&(lineno + 1)).unwrap_or(&(lineno + 1)) - 1;
+            let noqa = noqa_directives
+                .entry(noqa_lineno)
+                .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));
+            add_if!(check, noqa);
        }
    }

-    // Enforce that the noqa directive was actually used.
+    // Enforce that the noqa directive was actually used (M001).
    if enforce_noqa {
        for (row, (directive, matches)) in noqa_directives {
            match directive {
@@ -245,9 +249,11 @@ pub fn check_lines(
        }
    }

-    ignored.sort_unstable();
-    for index in ignored.iter().rev() {
-        checks.swap_remove(*index);
+    if !ignore_noqa {
+        ignored.sort_unstable();
+        for index in ignored.iter().rev() {
+            checks.swap_remove(*index);
+        }
    }
    checks.extend(line_checks);
 }
@@ -275,6 +281,7 @@ mod tests {
                    ..Settings::for_rule(CheckCode::E501)
                },
                true,
+                false,
            );
            checks
        };
--- a/src/checks.rs
+++ b/src/checks.rs
@@ -7,6 +7,7 @@ use strum_macros::{AsRefStr, EnumIter, EnumString};

 use crate::ast::types::Range;
 use crate::autofix::Fix;
+use crate::flake8_debugger::types::DebuggerUsingType;
 use crate::flake8_quotes::settings::Quote;
 use crate::flake8_tidy_imports::settings::Strictness;
 use crate::pyupgrade::types::Primitive;
@@ -52,7 +53,20 @@ pub enum CheckCode {
    F405,
    F406,
    F407,
+    F501,
+    F502,
+    F503,
+    F504,
+    F505,
+    F506,
+    F507,
+    F508,
+    F509,
    F521,
+    F522,
+    F523,
+    F524,
+    F525,
    F541,
    F601,
    F602,
@@ -100,6 +114,7 @@ pub enum CheckCode {
    B020,
    B021,
    B022,
+    B023,
    B024,
    B025,
    B026,
@@ -124,6 +139,8 @@ pub enum CheckCode {
    C415,
    C416,
    C417,
+    // flake8-debugger
+    T100,
    // mccabe
    C901,
    // flake8-tidy-imports
@@ -267,6 +284,7 @@ pub enum CheckCategory {
    PEP8Naming,
    Flake8Bandit,
    Flake8Comprehensions,
+    Flake8Debugger,
    Flake8BooleanTrap,
    Flake8Bugbear,
    Flake8Builtins,
@@ -292,6 +310,7 @@ impl CheckCategory {
            CheckCategory::Flake8Builtins => "flake8-builtins",
            CheckCategory::Flake8Bugbear => "flake8-bugbear",
            CheckCategory::Flake8Comprehensions => "flake8-comprehensions",
+            CheckCategory::Flake8Debugger => "flake8-debugger",
            CheckCategory::Flake8TidyImports => "flake8-tidy-imports",
            CheckCategory::Flake8Print => "flake8-print",
            CheckCategory::Flake8Quotes => "flake8-quotes",
@@ -321,6 +340,9 @@ impl CheckCategory {
            CheckCategory::Flake8Comprehensions => {
                Some("https://pypi.org/project/flake8-comprehensions/3.10.1/")
            }
+            CheckCategory::Flake8Debugger => {
+                Some("https://pypi.org/project/flake8-debugger/4.1.2/")
+            }
            CheckCategory::Flake8TidyImports => {
                Some("https://pypi.org/project/flake8-tidy-imports/4.8.0/")
            }
@@ -402,9 +424,22 @@ pub enum CheckKind {
    LateFutureImport,
    MultiValueRepeatedKeyLiteral,
    MultiValueRepeatedKeyVariable(String),
+    PercentFormatExpectedMapping,
+    PercentFormatExpectedSequence,
+    PercentFormatExtraNamedArguments(Vec<String>),
+    PercentFormatInvalidFormat(String),
+    PercentFormatMissingArgument(Vec<String>),
+    PercentFormatMixedPositionalAndNamed,
+    PercentFormatPositionalCountMismatch(usize, usize),
+    PercentFormatStarRequiresSequence,
+    PercentFormatUnsupportedFormatCharacter(char),
    RaiseNotImplemented,
    ReturnOutsideFunction,
+    StringDotFormatExtraNamedArguments(Vec<String>),
+    StringDotFormatExtraPositionalArguments(Vec<String>),
    StringDotFormatInvalidFormat(String),
+    StringDotFormatMissingArguments(Vec<String>),
+    StringDotFormatMixingAutomatic,
    TwoStarredExpressions,
    UndefinedExport(String),
    UndefinedLocal(String),
@@ -419,32 +454,33 @@ pub enum CheckKind {
    // flake8-blind-except
    BlindExcept,
    // flake8-bugbear
-    UnaryPrefixIncrement,
-    AssignmentToOsEnviron,
-    UnreliableCallableCheck,
-    StripWithMultiCharacters,
-    MutableArgumentDefault,
-    UnusedLoopControlVariable(String),
-    FunctionCallArgumentDefault(Option<String>),
-    GetAttrWithConstant,
-    SetAttrWithConstant,
-    DoNotAssertFalse,
-    JumpStatementInFinally(String),
-    RedundantTupleInExceptionHandler(String),
-    DuplicateHandlerException(Vec<String>),
-    UselessComparison,
-    CannotRaiseLiteral,
-    NoAssertRaisesException,
-    UselessExpression,
-    CachedInstanceMethod,
-    LoopVariableOverridesIterator(String),
-    FStringDocstring,
-    UselessContextlibSuppress,
    AbstractBaseClassWithoutAbstractMethod(String),
+    AssignmentToOsEnviron,
+    CachedInstanceMethod,
+    CannotRaiseLiteral,
+    DoNotAssertFalse,
+    DuplicateHandlerException(Vec<String>),
    DuplicateTryBlockException(String),
-    StarArgUnpackingAfterKeywordArg,
    EmptyMethodWithoutAbstractDecorator(String),
+    FStringDocstring,
+    FunctionCallArgumentDefault(Option<String>),
+    FunctionUsesLoopVariable(String),
+    GetAttrWithConstant,
+    JumpStatementInFinally(String),
+    LoopVariableOverridesIterator(String),
+    MutableArgumentDefault,
+    NoAssertRaisesException,
    RaiseWithoutFromInsideExcept,
+    RedundantTupleInExceptionHandler(String),
+    SetAttrWithConstant,
+    StarArgUnpackingAfterKeywordArg,
+    StripWithMultiCharacters,
+    UnaryPrefixIncrement,
+    UnreliableCallableCheck,
+    UnusedLoopControlVariable(String),
+    UselessComparison,
+    UselessContextlibSuppress,
+    UselessExpression,
    // flake8-comprehensions
    UnnecessaryGeneratorList,
    UnnecessaryGeneratorSet,
@@ -462,6 +498,8 @@ pub enum CheckKind {
    UnnecessarySubscriptReversal(String),
    UnnecessaryComprehension(String),
    UnnecessaryMap(String),
+    // flake8-debugger
+    Debugger(DebuggerUsingType),
    // flake8-tidy-imports
    BannedRelativeImport(Strictness),
    // flake8-print
@@ -648,7 +686,24 @@ impl CheckCode {
            }
            CheckCode::F406 => CheckKind::ImportStarNotPermitted("...".to_string()),
            CheckCode::F407 => CheckKind::FutureFeatureNotDefined("...".to_string()),
+            CheckCode::F501 => CheckKind::PercentFormatInvalidFormat("...".to_string()),
+            CheckCode::F502 => CheckKind::PercentFormatExpectedMapping,
+            CheckCode::F503 => CheckKind::PercentFormatExpectedSequence,
+            CheckCode::F504 => CheckKind::PercentFormatExtraNamedArguments(vec!["...".to_string()]),
+            CheckCode::F505 => CheckKind::PercentFormatMissingArgument(vec!["...".to_string()]),
+            CheckCode::F506 => CheckKind::PercentFormatMixedPositionalAndNamed,
+            CheckCode::F507 => CheckKind::PercentFormatPositionalCountMismatch(4, 2),
+            CheckCode::F508 => CheckKind::PercentFormatStarRequiresSequence,
+            CheckCode::F509 => CheckKind::PercentFormatUnsupportedFormatCharacter('c'),
            CheckCode::F521 => CheckKind::StringDotFormatInvalidFormat("...".to_string()),
+            CheckCode::F522 => {
+                CheckKind::StringDotFormatExtraNamedArguments(vec!["...".to_string()])
+            }
+            CheckCode::F523 => {
+                CheckKind::StringDotFormatExtraPositionalArguments(vec!["...".to_string()])
+            }
+            CheckCode::F524 => CheckKind::StringDotFormatMissingArguments(vec!["...".to_string()]),
+            CheckCode::F525 => CheckKind::StringDotFormatMixingAutomatic,
            CheckCode::F541 => CheckKind::FStringMissingPlaceholders,
            CheckCode::F601 => CheckKind::MultiValueRepeatedKeyLiteral,
            CheckCode::F602 => CheckKind::MultiValueRepeatedKeyVariable("...".to_string()),
@@ -700,6 +755,7 @@ impl CheckCode {
            CheckCode::B020 => CheckKind::LoopVariableOverridesIterator("...".to_string()),
            CheckCode::B021 => CheckKind::FStringDocstring,
            CheckCode::B022 => CheckKind::UselessContextlibSuppress,
+            CheckCode::B023 => CheckKind::FunctionUsesLoopVariable("...".to_string()),
            CheckCode::B024 => CheckKind::AbstractBaseClassWithoutAbstractMethod("...".to_string()),
            CheckCode::B025 => CheckKind::DuplicateTryBlockException("Exception".to_string()),
            CheckCode::B026 => CheckKind::StarArgUnpackingAfterKeywordArg,
@@ -735,6 +791,8 @@ impl CheckCode {
            }
            CheckCode::C416 => CheckKind::UnnecessaryComprehension("(list|set)".to_string()),
            CheckCode::C417 => CheckKind::UnnecessaryMap("(list|set|dict)".to_string()),
+            // flake8-debugger
+            CheckCode::T100 => CheckKind::Debugger(DebuggerUsingType::Import("...".to_string())),
            // flake8-tidy-imports
            CheckCode::I252 => CheckKind::BannedRelativeImport(Strictness::All),
            // flake8-print
@@ -915,7 +973,20 @@ impl CheckCode {
            CheckCode::F405 => CheckCategory::Pyflakes,
            CheckCode::F406 => CheckCategory::Pyflakes,
            CheckCode::F407 => CheckCategory::Pyflakes,
+            CheckCode::F501 => CheckCategory::Pyflakes,
+            CheckCode::F502 => CheckCategory::Pyflakes,
+            CheckCode::F503 => CheckCategory::Pyflakes,
+            CheckCode::F504 => CheckCategory::Pyflakes,
+            CheckCode::F505 => CheckCategory::Pyflakes,
+            CheckCode::F506 => CheckCategory::Pyflakes,
+            CheckCode::F507 => CheckCategory::Pyflakes,
+            CheckCode::F508 => CheckCategory::Pyflakes,
+            CheckCode::F509 => CheckCategory::Pyflakes,
            CheckCode::F521 => CheckCategory::Pyflakes,
+            CheckCode::F522 => CheckCategory::Pyflakes,
+            CheckCode::F523 => CheckCategory::Pyflakes,
+            CheckCode::F524 => CheckCategory::Pyflakes,
+            CheckCode::F525 => CheckCategory::Pyflakes,
            CheckCode::F541 => CheckCategory::Pyflakes,
            CheckCode::F601 => CheckCategory::Pyflakes,
            CheckCode::F602 => CheckCategory::Pyflakes,
@@ -961,6 +1032,7 @@ impl CheckCode {
            CheckCode::B020 => CheckCategory::Flake8Bugbear,
            CheckCode::B021 => CheckCategory::Flake8Bugbear,
            CheckCode::B022 => CheckCategory::Flake8Bugbear,
+            CheckCode::B023 => CheckCategory::Flake8Bugbear,
            CheckCode::B024 => CheckCategory::Flake8Bugbear,
            CheckCode::B025 => CheckCategory::Flake8Bugbear,
            CheckCode::B026 => CheckCategory::Flake8Bugbear,
@@ -983,6 +1055,7 @@ impl CheckCode {
            CheckCode::C415 => CheckCategory::Flake8Comprehensions,
            CheckCode::C416 => CheckCategory::Flake8Comprehensions,
            CheckCode::C417 => CheckCategory::Flake8Comprehensions,
+            CheckCode::T100 => CheckCategory::Flake8Debugger,
            CheckCode::I252 => CheckCategory::Flake8TidyImports,
            CheckCode::T201 => CheckCategory::Flake8Print,
            CheckCode::T203 => CheckCategory::Flake8Print,
@@ -1138,9 +1211,22 @@ impl CheckKind {
            CheckKind::NoneComparison(_) => &CheckCode::E711,
            CheckKind::NotInTest => &CheckCode::E713,
            CheckKind::NotIsTest => &CheckCode::E714,
+            CheckKind::PercentFormatExpectedMapping => &CheckCode::F502,
+            CheckKind::PercentFormatExpectedSequence => &CheckCode::F503,
+            CheckKind::PercentFormatExtraNamedArguments(_) => &CheckCode::F504,
+            CheckKind::PercentFormatInvalidFormat(_) => &CheckCode::F501,
+            CheckKind::PercentFormatMissingArgument(_) => &CheckCode::F505,
+            CheckKind::PercentFormatMixedPositionalAndNamed => &CheckCode::F506,
+            CheckKind::PercentFormatPositionalCountMismatch(..) => &CheckCode::F507,
+            CheckKind::PercentFormatStarRequiresSequence => &CheckCode::F508,
+            CheckKind::PercentFormatUnsupportedFormatCharacter(_) => &CheckCode::F509,
            CheckKind::RaiseNotImplemented => &CheckCode::F901,
            CheckKind::ReturnOutsideFunction => &CheckCode::F706,
+            CheckKind::StringDotFormatExtraNamedArguments(_) => &CheckCode::F522,
+            CheckKind::StringDotFormatExtraPositionalArguments(_) => &CheckCode::F523,
            CheckKind::StringDotFormatInvalidFormat(_) => &CheckCode::F521,
+            CheckKind::StringDotFormatMissingArguments(_) => &CheckCode::F524,
+            CheckKind::StringDotFormatMixingAutomatic => &CheckCode::F525,
            CheckKind::SyntaxError(_) => &CheckCode::E999,
            CheckKind::ExpressionsInStarAssignment => &CheckCode::F621,
            CheckKind::TrueFalseComparison(..) => &CheckCode::E712,
@@ -1160,32 +1246,33 @@ impl CheckKind {
            CheckKind::BuiltinArgumentShadowing(_) => &CheckCode::A002,
            CheckKind::BuiltinAttributeShadowing(_) => &CheckCode::A003,
            // flake8-bugbear
-            CheckKind::UnaryPrefixIncrement => &CheckCode::B002,
-            CheckKind::AssignmentToOsEnviron => &CheckCode::B003,
-            CheckKind::UnreliableCallableCheck => &CheckCode::B004,
-            CheckKind::StripWithMultiCharacters => &CheckCode::B005,
-            CheckKind::MutableArgumentDefault => &CheckCode::B006,
-            CheckKind::UnusedLoopControlVariable(_) => &CheckCode::B007,
-            CheckKind::FunctionCallArgumentDefault(_) => &CheckCode::B008,
-            CheckKind::GetAttrWithConstant => &CheckCode::B009,
-            CheckKind::SetAttrWithConstant => &CheckCode::B010,
-            CheckKind::DoNotAssertFalse => &CheckCode::B011,
-            CheckKind::JumpStatementInFinally(_) => &CheckCode::B012,
-            CheckKind::RedundantTupleInExceptionHandler(_) => &CheckCode::B013,
-            CheckKind::DuplicateHandlerException(_) => &CheckCode::B014,
-            CheckKind::UselessComparison => &CheckCode::B015,
-            CheckKind::CannotRaiseLiteral => &CheckCode::B016,
-            CheckKind::NoAssertRaisesException => &CheckCode::B017,
-            CheckKind::UselessExpression => &CheckCode::B018,
-            CheckKind::CachedInstanceMethod => &CheckCode::B019,
-            CheckKind::LoopVariableOverridesIterator(_) => &CheckCode::B020,
-            CheckKind::FStringDocstring => &CheckCode::B021,
-            CheckKind::UselessContextlibSuppress => &CheckCode::B022,
            CheckKind::AbstractBaseClassWithoutAbstractMethod(_) => &CheckCode::B024,
+            CheckKind::AssignmentToOsEnviron => &CheckCode::B003,
+            CheckKind::CachedInstanceMethod => &CheckCode::B019,
+            CheckKind::CannotRaiseLiteral => &CheckCode::B016,
+            CheckKind::DoNotAssertFalse => &CheckCode::B011,
+            CheckKind::DuplicateHandlerException(_) => &CheckCode::B014,
            CheckKind::DuplicateTryBlockException(_) => &CheckCode::B025,
-            CheckKind::StarArgUnpackingAfterKeywordArg => &CheckCode::B026,
            CheckKind::EmptyMethodWithoutAbstractDecorator(_) => &CheckCode::B027,
+            CheckKind::FStringDocstring => &CheckCode::B021,
+            CheckKind::FunctionCallArgumentDefault(_) => &CheckCode::B008,
+            CheckKind::FunctionUsesLoopVariable(_) => &CheckCode::B023,
+            CheckKind::GetAttrWithConstant => &CheckCode::B009,
+            CheckKind::JumpStatementInFinally(_) => &CheckCode::B012,
+            CheckKind::LoopVariableOverridesIterator(_) => &CheckCode::B020,
+            CheckKind::MutableArgumentDefault => &CheckCode::B006,
+            CheckKind::NoAssertRaisesException => &CheckCode::B017,
            CheckKind::RaiseWithoutFromInsideExcept => &CheckCode::B904,
+            CheckKind::RedundantTupleInExceptionHandler(_) => &CheckCode::B013,
+            CheckKind::SetAttrWithConstant => &CheckCode::B010,
+            CheckKind::StarArgUnpackingAfterKeywordArg => &CheckCode::B026,
+            CheckKind::StripWithMultiCharacters => &CheckCode::B005,
+            CheckKind::UnaryPrefixIncrement => &CheckCode::B002,
+            CheckKind::UnreliableCallableCheck => &CheckCode::B004,
+            CheckKind::UnusedLoopControlVariable(_) => &CheckCode::B007,
+            CheckKind::UselessComparison => &CheckCode::B015,
+            CheckKind::UselessContextlibSuppress => &CheckCode::B022,
+            CheckKind::UselessExpression => &CheckCode::B018,
            // flake8-blind-except
            CheckKind::BlindExcept => &CheckCode::BLE001,
            // flake8-comprehensions
@@ -1205,6 +1292,8 @@ impl CheckKind {
            CheckKind::UnnecessarySubscriptReversal(_) => &CheckCode::C415,
            CheckKind::UnnecessaryComprehension(..) => &CheckCode::C416,
            CheckKind::UnnecessaryMap(_) => &CheckCode::C417,
+            // flake8-debugger
+            CheckKind::Debugger(_) => &CheckCode::T100,
            // flake8-tidy-imports
            CheckKind::BannedRelativeImport(_) => &CheckCode::I252,
            // flake8-print
@@ -1421,15 +1510,59 @@ impl CheckKind {
            },
            CheckKind::NotInTest => "Test for membership should be `not in`".to_string(),
            CheckKind::NotIsTest => "Test for object identity should be `is not`".to_string(),
+            CheckKind::PercentFormatInvalidFormat(message) => {
+                format!("'...' % ... has invalid format string: {message}")
+            }
+            CheckKind::PercentFormatUnsupportedFormatCharacter(char) => {
+                format!("'...' % ... has unsupported format character '{char}'")
+            }
+            CheckKind::PercentFormatExpectedMapping => {
+                "'...' % ... expected mapping but got sequence".to_string()
+            }
+            CheckKind::PercentFormatExpectedSequence => {
+                "'...' % ... expected sequence but got mapping".to_string()
+            }
+            CheckKind::PercentFormatExtraNamedArguments(missing) => {
+                let message = missing.join(", ");
+                format!("'...' % ... has unused named argument(s): {message}")
+            }
+            CheckKind::PercentFormatMissingArgument(missing) => {
+                let message = missing.join(", ");
+                format!("'...' % ... is missing argument(s) for placeholder(s): {message}")
+            }
+            CheckKind::PercentFormatMixedPositionalAndNamed => {
+                "'...' % ... has mixed positional and named placeholders".to_string()
+            }
+            CheckKind::PercentFormatPositionalCountMismatch(wanted, got) => {
+                format!("'...' % ... has {wanted} placeholder(s) but {got} substitution(s)")
+            }
+            CheckKind::PercentFormatStarRequiresSequence => {
+                "'...' % ... `*` specifier requires sequence".to_string()
+            }
            CheckKind::RaiseNotImplemented => {
                "`raise NotImplemented` should be `raise NotImplementedError`".to_string()
            }
            CheckKind::ReturnOutsideFunction => {
                "`return` statement outside of a function/method".to_string()
            }
+            CheckKind::StringDotFormatExtraNamedArguments(missing) => {
+                let message = missing.join(", ");
+                format!("'...'.format(...) has unused named argument(s): {message}")
+            }
+            CheckKind::StringDotFormatExtraPositionalArguments(missing) => {
+                let message = missing.join(", ");
+                format!("'...'.format(...) has unused arguments at position(s): {message}")
+            }
            CheckKind::StringDotFormatInvalidFormat(message) => {
                format!("'...'.format(...) has invalid format string: {message}")
            }
+            CheckKind::StringDotFormatMissingArguments(missing) => {
+                let message = missing.join(", ");
+                format!("'...'.format(...) is missing argument(s) for placeholder(s): {message}")
+            }
+            CheckKind::StringDotFormatMixingAutomatic => {
+                "'...'.format(...) mixes automatic and manual numbering".to_string()
+            }
            CheckKind::SyntaxError(message) => format!("SyntaxError: {message}"),
            CheckKind::ExpressionsInStarAssignment => {
                "Too many expressions in star-unpacking assignment".to_string()
@@ -1515,6 +1648,9 @@ impl CheckKind {
                    "Do not perform function call in argument defaults".to_string()
                }
            }
+            CheckKind::FunctionUsesLoopVariable(name) => {
+                format!("Function definition does not bind loop variable `{name}`")
+            }
            CheckKind::GetAttrWithConstant => "Do not call `getattr` with a constant attribute \
                                               value. It is not any safer than normal property \
                                               access."
@@ -1671,6 +1807,11 @@ impl CheckKind {
                    format!("Unnecessary `map` usage (rewrite using a `{obj_type}` comprehension)")
                }
            }
+            // flake8-debugger
+            CheckKind::Debugger(using_type) => match using_type {
+                DebuggerUsingType::Call(name) => format!("Trace found: `{name}` used"),
+                DebuggerUsingType::Import(name) => format!("Import for `{name}` found"),
+            },
            // flake8-tidy-imports
            CheckKind::BannedRelativeImport(strictness) => match strictness {
                Strictness::Parents => {
--- a/src/checks_gen.rs
+++ b/src/checks_gen.rs
@@ -59,6 +59,7 @@ pub enum CheckCodePrefix {
    B020,
    B021,
    B022,
+    B023,
    B024,
    B025,
    B026,
@@ -186,6 +187,12 @@ pub enum CheckCodePrefix {
    F406,
    F407,
    F5,
+    F52,
+    F521,
+    F522,
+    F523,
+    F524,
+    F525,
    F54,
    F541,
    F6,
@@ -283,6 +290,9 @@ pub enum CheckCodePrefix {
    S106,
    S107,
    T,
+    T1,
+    T10,
+    T100,
    T2,
    T20,
    T201,
@@ -415,6 +425,7 @@ impl CheckCodePrefix {
                CheckCode::B020,
                CheckCode::B021,
                CheckCode::B022,
+                CheckCode::B023,
                CheckCode::B024,
                CheckCode::B025,
                CheckCode::B026,
@@ -443,6 +454,7 @@ impl CheckCodePrefix {
                CheckCode::B020,
                CheckCode::B021,
                CheckCode::B022,
+                CheckCode::B023,
                CheckCode::B024,
                CheckCode::B025,
                CheckCode::B026,
@@ -492,6 +504,7 @@ impl CheckCodePrefix {
                CheckCode::B020,
                CheckCode::B021,
                CheckCode::B022,
+                CheckCode::B023,
                CheckCode::B024,
                CheckCode::B025,
                CheckCode::B026,
@@ -500,6 +513,7 @@ impl CheckCodePrefix {
            CheckCodePrefix::B020 => vec![CheckCode::B020],
            CheckCodePrefix::B021 => vec![CheckCode::B021],
            CheckCodePrefix::B022 => vec![CheckCode::B022],
+            CheckCodePrefix::B023 => vec![CheckCode::B023],
            CheckCodePrefix::B024 => vec![CheckCode::B024],
            CheckCodePrefix::B025 => vec![CheckCode::B025],
            CheckCodePrefix::B026 => vec![CheckCode::B026],
@@ -847,7 +861,20 @@ impl CheckCodePrefix {
                CheckCode::F405,
                CheckCode::F406,
                CheckCode::F407,
+                CheckCode::F501,
+                CheckCode::F502,
+                CheckCode::F503,
+                CheckCode::F504,
+                CheckCode::F505,
+                CheckCode::F506,
+                CheckCode::F507,
+                CheckCode::F508,
+                CheckCode::F509,
                CheckCode::F521,
+                CheckCode::F522,
+                CheckCode::F523,
+                CheckCode::F524,
+                CheckCode::F525,
                CheckCode::F541,
                CheckCode::F601,
                CheckCode::F602,
@@ -895,7 +922,26 @@ impl CheckCodePrefix {
            CheckCodePrefix::F405 => vec![CheckCode::F405],
            CheckCodePrefix::F406 => vec![CheckCode::F406],
            CheckCodePrefix::F407 => vec![CheckCode::F407],
-            CheckCodePrefix::F5 => vec![CheckCode::F541],
+            CheckCodePrefix::F5 => vec![
+                CheckCode::F521,
+                CheckCode::F522,
+                CheckCode::F523,
+                CheckCode::F524,
+                CheckCode::F525,
+                CheckCode::F541,
+            ],
+            CheckCodePrefix::F52 => vec![
+                CheckCode::F521,
+                CheckCode::F522,
+                CheckCode::F523,
+                CheckCode::F524,
+                CheckCode::F525,
+            ],
+            CheckCodePrefix::F521 => vec![CheckCode::F521],
+            CheckCodePrefix::F522 => vec![CheckCode::F522],
+            CheckCodePrefix::F523 => vec![CheckCode::F523],
+            CheckCodePrefix::F524 => vec![CheckCode::F524],
+            CheckCodePrefix::F525 => vec![CheckCode::F525],
            CheckCodePrefix::F54 => vec![CheckCode::F541],
            CheckCodePrefix::F541 => vec![CheckCode::F541],
            CheckCodePrefix::F6 => vec![
@@ -1115,7 +1161,10 @@ impl CheckCodePrefix {
            CheckCodePrefix::S105 => vec![CheckCode::S105],
            CheckCodePrefix::S106 => vec![CheckCode::S106],
            CheckCodePrefix::S107 => vec![CheckCode::S107],
-            CheckCodePrefix::T => vec![CheckCode::T201, CheckCode::T203],
+            CheckCodePrefix::T => vec![CheckCode::T100, CheckCode::T201, CheckCode::T203],
+            CheckCodePrefix::T1 => vec![CheckCode::T100],
+            CheckCodePrefix::T10 => vec![CheckCode::T100],
+            CheckCodePrefix::T100 => vec![CheckCode::T100],
            CheckCodePrefix::T2 => vec![CheckCode::T201, CheckCode::T203],
            CheckCodePrefix::T20 => vec![CheckCode::T201, CheckCode::T203],
            CheckCodePrefix::T201 => vec![CheckCode::T201],
@@ -1289,6 +1338,7 @@ impl CheckCodePrefix {
            CheckCodePrefix::B020 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B021 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B022 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::B023 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B024 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B025 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B026 => PrefixSpecificity::Explicit,
@@ -1416,6 +1466,12 @@ impl CheckCodePrefix {
            CheckCodePrefix::F406 => PrefixSpecificity::Explicit,
            CheckCodePrefix::F407 => PrefixSpecificity::Explicit,
            CheckCodePrefix::F5 => PrefixSpecificity::Hundreds,
+            CheckCodePrefix::F52 => PrefixSpecificity::Tens,
+            CheckCodePrefix::F521 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::F522 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::F523 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::F524 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::F525 => PrefixSpecificity::Explicit,
            CheckCodePrefix::F54 => PrefixSpecificity::Tens,
            CheckCodePrefix::F541 => PrefixSpecificity::Explicit,
            CheckCodePrefix::F6 => PrefixSpecificity::Hundreds,
@@ -1513,6 +1569,9 @@ impl CheckCodePrefix {
            CheckCodePrefix::S106 => PrefixSpecificity::Explicit,
            CheckCodePrefix::S107 => PrefixSpecificity::Explicit,
            CheckCodePrefix::T => PrefixSpecificity::Category,
+            CheckCodePrefix::T1 => PrefixSpecificity::Hundreds,
+            CheckCodePrefix::T10 => PrefixSpecificity::Tens,
+            CheckCodePrefix::T100 => PrefixSpecificity::Explicit,
            CheckCodePrefix::T2 => PrefixSpecificity::Hundreds,
            CheckCodePrefix::T20 => PrefixSpecificity::Tens,
            CheckCodePrefix::T201 => PrefixSpecificity::Explicit,
@@ -1562,3 +1621,25 @@ impl CheckCodePrefix {
        }
    }
 }
+
+pub const CATEGORIES: &[CheckCodePrefix] = &[
+    CheckCodePrefix::A,
+    CheckCodePrefix::ANN,
+    CheckCodePrefix::B,
+    CheckCodePrefix::BLE,
+    CheckCodePrefix::C,
+    CheckCodePrefix::D,
+    CheckCodePrefix::E,
+    CheckCodePrefix::F,
+    CheckCodePrefix::FBT,
+    CheckCodePrefix::I,
+    CheckCodePrefix::M,
+    CheckCodePrefix::N,
+    CheckCodePrefix::Q,
+    CheckCodePrefix::RUF,
+    CheckCodePrefix::S,
+    CheckCodePrefix::T,
+    CheckCodePrefix::U,
+    CheckCodePrefix::W,
+    CheckCodePrefix::YTT,
+];
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -114,6 +114,9 @@ pub struct Cli {
    /// Explain a rule.
    #[arg(long)]
    pub explain: Option<CheckCode>,
+    /// Generate shell completion
+    #[arg(long, hide = true, value_name = "SHELL")]
+    pub generate_shell_completion: Option<clap_complete_command::Shell>,
 }

 impl Cli {
--- a/src/flake8_annotations/plugins.rs
+++ b/src/flake8_annotations/plugins.rs
@@ -21,7 +21,7 @@ where
    fn visit_stmt(&mut self, stmt: &'b Stmt) {
        match &stmt.node {
            StmtKind::FunctionDef { .. } | StmtKind::AsyncFunctionDef { .. } => {
-                // No recurse.
+                // Don't recurse.
            }
            StmtKind::Return { value } => self.returns.push(value.as_ref().map(|expr| &**expr)),
            _ => visitor::walk_stmt(self, stmt),
--- a/src/flake8_bugbear/plugins/function_uses_loop_variable.rs
+++ b/src/flake8_bugbear/plugins/function_uses_loop_variable.rs
@@ -0,0 +1,232 @@
+use rustc_hash::FxHashSet;
+use rustpython_ast::{Comprehension, Expr, ExprContext, ExprKind, Stmt, StmtKind};
+
+use crate::ast::helpers::collect_arg_names;
+use crate::ast::types::{Node, Range};
+use crate::ast::visitor;
+use crate::ast::visitor::Visitor;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind};
+
+#[derive(Default)]
+struct LoadedNamesVisitor<'a> {
+    // Tuple of: name, defining expression, and defining range.
+    names: Vec<(&'a str, &'a Expr, Range)>,
+    // If we're in an f-string, the range of the defining expression.
+    in_f_string: Option<Range>,
+}
+
+/// `Visitor` to collect all used identifiers in a statement.
+impl<'a, 'b> Visitor<'b> for LoadedNamesVisitor<'a>
+where
+    'b: 'a,
+{
+    fn visit_expr(&mut self, expr: &'b Expr) {
+        match &expr.node {
+            ExprKind::JoinedStr { .. } => {
+                let prev_in_f_string = self.in_f_string;
+                self.in_f_string = Some(Range::from_located(expr));
+                visitor::walk_expr(self, expr);
+                self.in_f_string = prev_in_f_string;
+            }
+            ExprKind::Name { id, ctx } if matches!(ctx, ExprContext::Load) => {
+                self.names.push((
+                    id,
+                    expr,
+                    self.in_f_string
+                        .unwrap_or_else(|| Range::from_located(expr)),
+                ));
+            }
+            _ => visitor::walk_expr(self, expr),
+        }
+    }
+}
+
+#[derive(Default)]
+struct SuspiciousVariablesVisitor<'a> {
+    names: Vec<(&'a str, &'a Expr, Range)>,
+}
+
+/// `Visitor` to collect all suspicious variables (those referenced in
+/// functions, but not bound as arguments).
+impl<'a, 'b> Visitor<'b> for SuspiciousVariablesVisitor<'a>
+where
+    'b: 'a,
+{
+    fn visit_stmt(&mut self, stmt: &'b Stmt) {
+        match &stmt.node {
+            StmtKind::FunctionDef { args, body, .. }
+            | StmtKind::AsyncFunctionDef { args, body, .. } => {
+                // Collect all loaded variable names.
+                let mut visitor = LoadedNamesVisitor::default();
+                for stmt in body {
+                    visitor.visit_stmt(stmt);
+                }
+
+                // Collect all argument names.
+                let arg_names = collect_arg_names(args);
+
+                // Treat any non-arguments as "suspicious".
+                self.names.extend(
+                    visitor
+                        .names
+                        .into_iter()
+                        .filter(|(id, ..)| !arg_names.contains(id)),
+                );
+            }
+            _ => visitor::walk_stmt(self, stmt),
+        }
+    }
+
+    fn visit_expr(&mut self, expr: &'b Expr) {
+        match &expr.node {
+            ExprKind::Lambda { args, body } => {
+                // Collect all loaded variable names.
+                let mut visitor = LoadedNamesVisitor::default();
+                visitor.visit_expr(body);
+
+                // Collect all argument names.
+                let arg_names = collect_arg_names(args);
+
+                // Treat any non-arguments as "suspicious".
+                self.names.extend(
+                    visitor
+                        .names
+                        .into_iter()
+                        .filter(|(id, ..)| !arg_names.contains(id)),
+                );
+            }
+            _ => visitor::walk_expr(self, expr),
+        }
+    }
+}
+
+#[derive(Default)]
+struct NamesFromAssignmentsVisitor<'a> {
+    names: FxHashSet<&'a str>,
+}
+
+/// `Visitor` to collect all names used in an assignment expression.
+impl<'a, 'b> Visitor<'b> for NamesFromAssignmentsVisitor<'a>
+where
+    'b: 'a,
+{
+    fn visit_expr(&mut self, expr: &'b Expr) {
+        match &expr.node {
+            ExprKind::Name { id, .. } => {
+                self.names.insert(id.as_str());
+            }
+            ExprKind::Starred { value, .. } => {
+                self.visit_expr(value);
+            }
+            ExprKind::List { elts, .. } | ExprKind::Tuple { elts, .. } => {
+                for expr in elts {
+                    self.visit_expr(expr);
+                }
+            }
+            _ => {}
+        }
+    }
+}
+
+#[derive(Default)]
+struct AssignedNamesVisitor<'a> {
+    names: FxHashSet<&'a str>,
+}
+
+/// `Visitor` to collect all used identifiers in a statement.
+impl<'a, 'b> Visitor<'b> for AssignedNamesVisitor<'a>
+where
+    'b: 'a,
+{
+    fn visit_stmt(&mut self, stmt: &'b Stmt) {
+        if matches!(
+            &stmt.node,
+            StmtKind::FunctionDef { .. } | StmtKind::AsyncFunctionDef { .. }
+        ) {
+            // Don't recurse.
+            return;
+        }
+
+        match &stmt.node {
+            StmtKind::Assign { targets, .. } => {
+                let mut visitor = NamesFromAssignmentsVisitor::default();
+                for expr in targets {
+                    visitor.visit_expr(expr);
+                }
+                self.names.extend(visitor.names);
+            }
+            StmtKind::AugAssign { target, .. }
+            | StmtKind::AnnAssign { target, .. }
+            | StmtKind::For { target, .. }
+            | StmtKind::AsyncFor { target, .. } => {
+                let mut visitor = NamesFromAssignmentsVisitor::default();
+                visitor.visit_expr(target);
+                self.names.extend(visitor.names);
+            }
+            _ => {}
+        }
+
+        visitor::walk_stmt(self, stmt);
+    }
+
+    fn visit_expr(&mut self, expr: &'b Expr) {
+        if matches!(&expr.node, ExprKind::Lambda { .. }) {
+            // Don't recurse.
+            return;
+        }
+
+        visitor::walk_expr(self, expr);
+    }
+
+    fn visit_comprehension(&mut self, comprehension: &'b Comprehension) {
+        let mut visitor = NamesFromAssignmentsVisitor::default();
+        visitor.visit_expr(&comprehension.target);
+        self.names.extend(visitor.names);
+
+        visitor::walk_comprehension(self, comprehension);
+    }
+}
+
+/// B023
+pub fn function_uses_loop_variable<'a, 'b>(checker: &'a mut Checker<'b>, node: &Node<'b>)
+where
+    'b: 'a,
+{
+    // Identify any "suspicious" variables. These are defined as variables that are
+    // referenced in a function or lambda body, but aren't bound as arguments.
+    let suspicious_variables = {
+        let mut visitor = SuspiciousVariablesVisitor::<'b>::default();
+        match node {
+            Node::Stmt(stmt) => visitor.visit_stmt(stmt),
+            Node::Expr(expr) => visitor.visit_expr(expr),
+        }
+        visitor.names
+    };
+
+    if !suspicious_variables.is_empty() {
+        // Identify any variables that are assigned in the loop (ignoring functions).
+        let reassigned_in_loop = {
+            let mut visitor = AssignedNamesVisitor::<'b>::default();
+            match node {
+                Node::Stmt(stmt) => visitor.visit_stmt(stmt),
+                Node::Expr(expr) => visitor.visit_expr(expr),
+            }
+            visitor.names
+        };
+
+        // If a variable was used in a function or lambda body, and assigned in the
+        // loop, flag it.
+        for (name, expr, range) in suspicious_variables {
+            if reassigned_in_loop.contains(name) {
+                if !checker.seen_b023.contains(&expr) {
+                    checker.seen_b023.push(expr);
+                    checker.add_check(Check::new(
+                        CheckKind::FunctionUsesLoopVariable(name.to_string()),
+                        range,
+                    ));
+                }
+            }
+        }
+    }
+}
--- a/src/flake8_bugbear/plugins/mod.rs
+++ b/src/flake8_bugbear/plugins/mod.rs
@@ -7,6 +7,7 @@ pub use cannot_raise_literal::cannot_raise_literal;
 pub use duplicate_exceptions::duplicate_exceptions;
 pub use f_string_docstring::f_string_docstring;
 pub use function_call_argument_default::function_call_argument_default;
+pub use function_uses_loop_variable::function_uses_loop_variable;
 pub use getattr_with_constant::getattr_with_constant;
 pub use jump_statement_in_finally::jump_statement_in_finally;
 pub use loop_variable_overrides_iterator::loop_variable_overrides_iterator;
@@ -32,6 +33,7 @@ mod cannot_raise_literal;
 mod duplicate_exceptions;
 mod f_string_docstring;
 mod function_call_argument_default;
+mod function_uses_loop_variable;
 mod getattr_with_constant;
 mod jump_statement_in_finally;
 mod loop_variable_overrides_iterator;
--- a/src/flake8_debugger/checks.rs
+++ b/src/flake8_debugger/checks.rs
@@ -0,0 +1,64 @@
+use rustc_hash::{FxHashMap, FxHashSet};
+use rustpython_ast::{Expr, Stmt};
+
+use crate::ast::helpers::{collect_call_paths, dealias_call_path, match_call_path};
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+use crate::flake8_debugger::types::DebuggerUsingType;
+
+const DEBUGGERS: &[(&str, &str)] = &[
+    ("pdb", "set_trace"),
+    ("pudb", "set_trace"),
+    ("ipdb", "set_trace"),
+    ("ipdb", "sset_trace"),
+    ("IPython.terminal.embed", "InteractiveShellEmbed"),
+    ("IPython.frontend.terminal.embed", "InteractiveShellEmbed"),
+    ("celery.contrib.rdb", "set_trace"),
+    ("builtins", "breakpoint"),
+    ("", "breakpoint"),
+];
+
+/// Checks for the presence of a debugger call.
+pub fn debugger_call(
+    expr: &Expr,
+    func: &Expr,
+    from_imports: &FxHashMap<&str, FxHashSet<&str>>,
+    import_aliases: &FxHashMap<&str, &str>,
+) -> Option<Check> {
+    let call_path = dealias_call_path(collect_call_paths(func), import_aliases);
+    if DEBUGGERS
+        .iter()
+        .any(|(module, member)| match_call_path(&call_path, module, member, from_imports))
+    {
+        Some(Check::new(
+            CheckKind::Debugger(DebuggerUsingType::Call(call_path.join("."))),
+            Range::from_located(expr),
+        ))
+    } else {
+        None
+    }
+}
+
+/// Checks for the presence of a debugger import.
+pub fn debugger_import(stmt: &Stmt, module: Option<&str>, name: &str) -> Option<Check> {
+    if let Some(module) = module {
+        if let Some((module_name, member)) = DEBUGGERS
+            .iter()
+            .find(|(module_name, member)| module_name == &module && member == &name)
+        {
+            return Some(Check::new(
+                CheckKind::Debugger(DebuggerUsingType::Import(format!("{module_name}.{member}"))),
+                Range::from_located(stmt),
+            ));
+        }
+    } else if DEBUGGERS
+        .iter()
+        .any(|(module_name, ..)| module_name == &name)
+    {
+        return Some(Check::new(
+            CheckKind::Debugger(DebuggerUsingType::Import(name.to_string())),
+            Range::from_located(stmt),
+        ));
+    }
+    None
+}
--- a/src/flake8_debugger/mod.rs
+++ b/src/flake8_debugger/mod.rs
@@ -0,0 +1,2 @@
+pub mod checks;
+pub mod types;
--- a/src/flake8_debugger/types.rs
+++ b/src/flake8_debugger/types.rs
@@ -0,0 +1,7 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub enum DebuggerUsingType {
+    Call(String),
+    Import(String),
+}
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -47,6 +47,7 @@ pub mod flake8_boolean_trap;
 pub mod flake8_bugbear;
 mod flake8_builtins;
 mod flake8_comprehensions;
+mod flake8_debugger;
 mod flake8_print;
 pub mod flake8_quotes;
 pub mod flake8_tidy_imports;
@@ -115,6 +116,7 @@ pub fn check(path: &Path, contents: &str, autofix: bool) -> Result<Vec<Check>> {
        &directives,
        &settings,
        autofix,
+        false,
    )?;

    Ok(checks)
--- a/src/linter.rs
+++ b/src/linter.rs
@@ -7,6 +7,7 @@ use std::path::Path;
 use anyhow::Result;
 #[cfg(not(target_family = "wasm"))]
 use log::debug;
+use nohash_hasher::IntMap;
 use rustpython_parser::lexer::LexResult;

 use crate::ast::types::Range;
@@ -46,6 +47,7 @@ impl AddAssign for Diagnostics {

 /// Generate a list of `Check` violations from the source code contents at the
 /// given `Path`.
+#[allow(clippy::too_many_arguments)]
 pub(crate) fn check_path(
    path: &Path,
    contents: &str,
@@ -54,6 +56,7 @@ pub(crate) fn check_path(
    directives: &Directives,
    settings: &Settings,
    autofix: bool,
+    ignore_noqa: bool,
 ) -> Result<Vec<Check>> {
    // Aggregate all checks.
    let mut checks: Vec<Check> = vec![];
@@ -113,6 +116,7 @@ pub(crate) fn check_path(
        &directives.noqa_line_for,
        settings,
        autofix,
+        ignore_noqa,
    );

    // Create path ignores.
@@ -179,6 +183,7 @@ pub fn lint_path(
            &directives,
            settings,
            autofix.into(),
+            false,
        )?;

        // Apply autofix.
@@ -242,15 +247,19 @@ pub fn add_noqa_to_path(path: &Path, settings: &Settings) -> Result<usize> {
        directives::Flags::from_settings(settings),
    );

-    // Generate checks.
+    // Generate checks, ignoring any existing `noqa` directives.
    let checks = check_path(
        path,
        &contents,
        tokens,
        &locator,
-        &directives,
+        &Directives {
+            noqa_line_for: IntMap::default(),
+            isort_exclusions: directives.isort_exclusions,
+        },
        settings,
        false,
+        true,
    )?;

    add_noqa(&checks, &contents, &directives.noqa_line_for, path)
@@ -313,6 +322,7 @@ pub fn lint_stdin(
            &directives,
            settings,
            autofix.into(),
+            false,
        )?;

        // Apply autofix.
@@ -373,6 +383,7 @@ pub fn test_path(path: &Path, settings: &Settings, autofix: bool) -> Result<Vec<
        &directives,
        settings,
        autofix,
+        false,
    )
 }

@@ -413,6 +424,7 @@ mod tests {
    #[test_case(CheckCode::B020, Path::new("B020.py"); "B020")]
    #[test_case(CheckCode::B021, Path::new("B021.py"); "B021")]
    #[test_case(CheckCode::B022, Path::new("B022.py"); "B022")]
+    #[test_case(CheckCode::B023, Path::new("B023.py"); "B023")]
    #[test_case(CheckCode::B024, Path::new("B024.py"); "B024")]
    #[test_case(CheckCode::B025, Path::new("B025.py"); "B025")]
    #[test_case(CheckCode::B026, Path::new("B026.py"); "B026")]
@@ -506,7 +518,24 @@ mod tests {
    #[test_case(CheckCode::F405, Path::new("F405.py"); "F405")]
    #[test_case(CheckCode::F406, Path::new("F406.py"); "F406")]
    #[test_case(CheckCode::F407, Path::new("F407.py"); "F407")]
+    #[test_case(CheckCode::F501, Path::new("F50x.py"); "F501")]
+    #[test_case(CheckCode::F502, Path::new("F50x.py"); "F502_0")]
+    #[test_case(CheckCode::F502, Path::new("F502.py"); "F502_1")]
+    #[test_case(CheckCode::F503, Path::new("F50x.py"); "F503_0")]
+    #[test_case(CheckCode::F503, Path::new("F503.py"); "F503_1")]
+    #[test_case(CheckCode::F504, Path::new("F50x.py"); "F504_0")]
+    #[test_case(CheckCode::F504, Path::new("F504.py"); "F504_1")]
+    #[test_case(CheckCode::F505, Path::new("F50x.py"); "F505_0")]
+    #[test_case(CheckCode::F505, Path::new("F504.py"); "F505_1")]
+    #[test_case(CheckCode::F506, Path::new("F50x.py"); "F506")]
+    #[test_case(CheckCode::F507, Path::new("F50x.py"); "F507")]
+    #[test_case(CheckCode::F508, Path::new("F50x.py"); "F508")]
+    #[test_case(CheckCode::F509, Path::new("F50x.py"); "F509")]
    #[test_case(CheckCode::F521, Path::new("F521.py"); "F521")]
+    #[test_case(CheckCode::F522, Path::new("F522.py"); "F522")]
+    #[test_case(CheckCode::F523, Path::new("F523.py"); "F523")]
+    #[test_case(CheckCode::F524, Path::new("F524.py"); "F524")]
+    #[test_case(CheckCode::F525, Path::new("F525.py"); "F525")]
    #[test_case(CheckCode::F541, Path::new("F541.py"); "F541")]
    #[test_case(CheckCode::F601, Path::new("F601.py"); "F601")]
    #[test_case(CheckCode::F602, Path::new("F602.py"); "F602")]
@@ -553,6 +582,7 @@ mod tests {
    #[test_case(CheckCode::S105, Path::new("S105.py"); "S105")]
    #[test_case(CheckCode::S106, Path::new("S106.py"); "S106")]
    #[test_case(CheckCode::S107, Path::new("S107.py"); "S107")]
+    #[test_case(CheckCode::T100, Path::new("T100.py"); "T100")]
    #[test_case(CheckCode::T201, Path::new("T201.py"); "T201")]
    #[test_case(CheckCode::T203, Path::new("T203.py"); "T203")]
    #[test_case(CheckCode::U001, Path::new("U001.py"); "U001")]
@@ -566,6 +596,7 @@ mod tests {
    #[test_case(CheckCode::U009, Path::new("U009_1.py"); "U009_1")]
    #[test_case(CheckCode::U009, Path::new("U009_2.py"); "U009_2")]
    #[test_case(CheckCode::U009, Path::new("U009_3.py"); "U009_3")]
+    #[test_case(CheckCode::U009, Path::new("U009_4.py"); "U009_4")]
    #[test_case(CheckCode::U010, Path::new("U010.py"); "U010")]
    #[test_case(CheckCode::U011, Path::new("U011_0.py"); "U011_0")]
    #[test_case(CheckCode::U011, Path::new("U011_1.py"); "U011_1")]
--- a/src/main.rs
+++ b/src/main.rs
@@ -30,7 +30,7 @@ use ::ruff::settings::{pyproject, Settings};
 use ::ruff::updates;
 use ::ruff::{cache, commands};
 use anyhow::Result;
-use clap::Parser;
+use clap::{CommandFactory, Parser};
 use colored::Colorize;
 use log::{debug, error};
 use notify::{raw_watcher, RecursiveMode, Watcher};
@@ -261,6 +261,11 @@ fn inner_main() -> Result<ExitCode> {
        return Ok(ExitCode::SUCCESS);
    }

+    if let Some(shell) = cli.generate_shell_completion {
+        shell.generate(&mut Cli::command(), &mut std::io::stdout());
+        return Ok(ExitCode::SUCCESS);
+    }
+
    if cli.show_settings && cli.show_files {
        eprintln!("Error: specify --show-settings or show-files (not both).");
        return Ok(ExitCode::FAILURE);
--- a/src/noqa.rs
+++ b/src/noqa.rs
@@ -99,18 +99,42 @@ fn add_noqa_inner(
            Some(codes) => {
                match extract_noqa_directive(line) {
                    Directive::None => {
-                        output.push_str(line);
+                        // Add existing content.
+                        output.push_str(line.trim_end());
+
+                        // Add `noqa` directive.
                        output.push_str("  # noqa: ");
+
+                        // Add codes.
+                        let codes: Vec<&str> = codes.iter().map(AsRef::as_ref).collect();
+                        let suffix = codes.join(", ");
+                        output.push_str(&suffix);
+                        output.push('\n');
+                        count += 1;
                    }
                    Directive::All(_, start, _) | Directive::Codes(_, start, ..) => {
-                        output.push_str(&line[..start]);
-                        output.push_str("# noqa: ");
+                        let mut new_line = String::new();
+
+                        // Add existing content.
+                        new_line.push_str(line[..start].trim_end());
+
+                        // Add `noqa` directive.
+                        new_line.push_str("  # noqa: ");
+
+                        // Add codes.
+                        let codes: Vec<&str> = codes.iter().map(AsRef::as_ref).collect();
+                        let suffix = codes.join(", ");
+                        new_line.push_str(&suffix);
+
+                        output.push_str(&new_line);
+                        output.push('\n');
+
+                        // Only count if the new line is an actual edit.
+                        if &new_line != line {
+                            count += 1;
+                        }
                    }
                };
-                let codes: Vec<&str> = codes.iter().map(AsRef::as_ref).collect();
-                output.push_str(&codes.join(", "));
-                output.push('\n');
-                count += 1;
            }
        }
    }
--- a/src/pydocstyle/plugins.rs
+++ b/src/pydocstyle/plugins.rs
@@ -4,7 +4,7 @@ use itertools::Itertools;
 use once_cell::sync::Lazy;
 use regex::Regex;
 use rustc_hash::FxHashSet;
-use rustpython_ast::{Arg, Constant, ExprKind, Location, StmtKind};
+use rustpython_ast::{Constant, ExprKind, Location, StmtKind};

 use crate::ast::types::Range;
 use crate::ast::whitespace;
@@ -1303,8 +1303,9 @@ fn missing_args(checker: &mut Checker, definition: &Definition, docstrings_args:
            args: arguments, ..
        } = &parent.node
        {
-            // Collect all the arguments into a single vector.
-            let mut all_arguments: Vec<&Arg> = arguments
+            // Look for arguments that weren't included in the docstring.
+            let mut missing_arg_names: BTreeSet<String> = BTreeSet::default();
+            for arg in arguments
                .args
                .iter()
                .chain(arguments.posonlyargs.iter())
@@ -1316,33 +1317,38 @@ fn missing_args(checker: &mut Checker, definition: &Definition, docstrings_args:
                            && !is_staticmethod(parent),
                    ),
                )
-                .collect();
+            {
+                let arg_name = arg.node.arg.as_str();
+                if !arg_name.starts_with('_') && !docstrings_args.contains(&arg_name) {
+                    missing_arg_names.insert(arg_name.to_string());
+                }
+            }
+
+            // Check specifically for `vararg` and `kwarg`, which can be prefixed with a
+            // single or double star, respectively.
            if let Some(arg) = &arguments.vararg {
-                all_arguments.push(arg);
+                let arg_name = arg.node.arg.as_str();
+                let starred_arg_name = format!("*{arg_name}");
+                if !arg_name.starts_with('_')
+                    && !docstrings_args.contains(&arg_name)
+                    && !docstrings_args.contains(&starred_arg_name.as_str())
+                {
+                    missing_arg_names.insert(starred_arg_name);
+                }
            }
            if let Some(arg) = &arguments.kwarg {
-                all_arguments.push(arg);
-            }
-
-            // Look for arguments that weren't included in the docstring.
-            let mut missing_args: BTreeSet<&str> = BTreeSet::default();
-            for arg in all_arguments {
                let arg_name = arg.node.arg.as_str();
-                if arg_name.starts_with('_') {
-                    continue;
+                let starred_arg_name = format!("**{arg_name}");
+                if !arg_name.starts_with('_')
+                    && !docstrings_args.contains(&arg_name)
+                    && !docstrings_args.contains(&starred_arg_name.as_str())
+                {
+                    missing_arg_names.insert(starred_arg_name);
                }
-                if docstrings_args.contains(&arg_name) {
-                    continue;
-                }
-                missing_args.insert(arg_name);
            }

-            if !missing_args.is_empty() {
-                let names = missing_args
-                    .into_iter()
-                    .map(String::from)
-                    .sorted()
-                    .collect();
+            if !missing_arg_names.is_empty() {
+                let names = missing_arg_names.into_iter().sorted().collect();
                checker.add_check(Check::new(
                    CheckKind::DocumentAllArguments(names),
                    Range::from_located(parent),
--- a/src/pyflakes/cformat.rs
+++ b/src/pyflakes/cformat.rs
@@ -0,0 +1,102 @@
+//! Implements helper functions for using vendored/cformat.rs
+use std::convert::TryFrom;
+use std::str::FromStr;
+
+use rustc_hash::FxHashSet;
+
+use crate::vendored::cformat::{
+    CFormatError, CFormatPart, CFormatQuantity, CFormatSpec, CFormatString,
+};
+
+pub(crate) struct CFormatSummary {
+    pub starred: bool,
+    pub num_positional: usize,
+    pub keywords: FxHashSet<String>,
+}
+
+impl TryFrom<&str> for CFormatSummary {
+    type Error = CFormatError;
+
+    fn try_from(literal: &str) -> Result<Self, Self::Error> {
+        let format_string = CFormatString::from_str(literal)?;
+
+        let mut starred = false;
+        let mut num_positional = 0;
+        let mut keywords = FxHashSet::default();
+
+        for format_part in format_string.parts {
+            if let CFormatPart::Spec(CFormatSpec {
+                mapping_key,
+                min_field_width,
+                precision,
+                ..
+            }) = format_part.1
+            {
+                match mapping_key {
+                    Some(k) => {
+                        keywords.insert(k);
+                    }
+                    None => {
+                        num_positional += 1;
+                    }
+                };
+                if min_field_width == Some(CFormatQuantity::FromValuesTuple) {
+                    num_positional += 1;
+                    starred = true;
+                }
+                if precision == Some(CFormatQuantity::FromValuesTuple) {
+                    num_positional += 1;
+                    starred = true;
+                }
+            }
+        }
+
+        Ok(CFormatSummary {
+            starred,
+            num_positional,
+            keywords,
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_cformat_summary() {
+        let literal = "%(foo)s %s %d %(bar)x";
+
+        let expected_positional = 2;
+        let expected_keywords = ["foo", "bar"].into_iter().map(String::from).collect();
+
+        let format_summary = CFormatSummary::try_from(literal).unwrap();
+        assert!(!format_summary.starred);
+        assert_eq!(format_summary.num_positional, expected_positional);
+        assert_eq!(format_summary.keywords, expected_keywords);
+    }
+
+    #[test]
+    fn test_cformat_summary_starred() {
+        let format_summary1 = CFormatSummary::try_from("%*s %*d").unwrap();
+        assert!(format_summary1.starred);
+        assert_eq!(format_summary1.num_positional, 4);
+
+        let format_summary2 = CFormatSummary::try_from("%s %.*d").unwrap();
+        assert!(format_summary2.starred);
+        assert_eq!(format_summary2.num_positional, 3);
+
+        let format_summary3 = CFormatSummary::try_from("%s %*.*d").unwrap();
+        assert!(format_summary3.starred);
+        assert_eq!(format_summary3.num_positional, 4);
+
+        let format_summary4 = CFormatSummary::try_from("%s %1d").unwrap();
+        assert!(!format_summary4.starred);
+    }
+
+    #[test]
+    fn test_cformat_summary_invalid() {
+        assert!(CFormatSummary::try_from("%").is_err());
+        assert!(CFormatSummary::try_from("%(foo).").is_err());
+    }
+}
--- a/src/pyflakes/checks.rs
+++ b/src/pyflakes/checks.rs
@@ -1,33 +1,351 @@
+use std::string::ToString;
+
 use regex::Regex;
 use rustc_hash::FxHashSet;
+use rustpython_ast::{Keyword, KeywordData};
 use rustpython_parser::ast::{
    Arg, Arguments, Constant, Excepthandler, ExcepthandlerKind, Expr, ExprKind, Stmt, StmtKind,
 };

 use crate::ast::types::{BindingKind, FunctionScope, Range, Scope, ScopeKind};
 use crate::checks::{Check, CheckKind};
-use crate::vendored::format::{FieldName, FormatPart, FormatString, FromTemplate};
+use crate::pyflakes::cformat::CFormatSummary;
+use crate::pyflakes::format::FormatSummary;

-// F521
-pub fn string_dot_format_invalid(literal: &str, location: Range) -> Option<Check> {
-    match FormatString::from_str(literal) {
-        Err(e) => Some(Check::new(
-            CheckKind::StringDotFormatInvalidFormat(e.to_string()),
-            location,
-        )),
-        Ok(format_string) => {
-            for part in format_string.format_parts {
-                if let FormatPart::Field { field_name, .. } = &part {
-                    if let Err(e) = FieldName::parse(field_name) {
-                        return Some(Check::new(
-                            CheckKind::StringDotFormatInvalidFormat(e.to_string()),
-                            location,
-                        ));
+fn has_star_star_kwargs(keywords: &[Keyword]) -> bool {
+    keywords.iter().any(|k| {
+        let KeywordData { arg, .. } = &k.node;
+        arg.is_none()
+    })
+}
+
+fn has_star_args(args: &[Expr]) -> bool {
+    args.iter()
+        .any(|a| matches!(&a.node, ExprKind::Starred { .. }))
+}
+
+/// F502
+pub(crate) fn percent_format_expected_mapping(
+    summary: &CFormatSummary,
+    right: &Expr,
+    location: Range,
+) -> Option<Check> {
+    if summary.keywords.is_empty() {
+        None
+    } else {
+        // Tuple, List, Set (+comprehensions)
+        match right.node {
+            ExprKind::List { .. }
+            | ExprKind::Tuple { .. }
+            | ExprKind::Set { .. }
+            | ExprKind::ListComp { .. }
+            | ExprKind::SetComp { .. }
+            | ExprKind::GeneratorExp { .. } => Some(Check::new(
+                CheckKind::PercentFormatExpectedMapping,
+                location,
+            )),
+            _ => None,
+        }
+    }
+}
+
+/// F503
+pub(crate) fn percent_format_expected_sequence(
+    summary: &CFormatSummary,
+    right: &Expr,
+    location: Range,
+) -> Option<Check> {
+    if summary.num_positional <= 1 {
+        None
+    } else {
+        match right.node {
+            ExprKind::Dict { .. } | ExprKind::DictComp { .. } => Some(Check::new(
+                CheckKind::PercentFormatExpectedSequence,
+                location,
+            )),
+            _ => None,
+        }
+    }
+}
+
+/// F504
+pub(crate) fn percent_format_extra_named_arguments(
+    summary: &CFormatSummary,
+    right: &Expr,
+    location: Range,
+) -> Option<Check> {
+    if summary.num_positional > 0 {
+        return None;
+    }
+
+    if let ExprKind::Dict { keys, values } = &right.node {
+        if values.len() > keys.len() {
+            return None; // contains **x splat
+        }
+
+        let missing: Vec<&String> = keys
+            .iter()
+            .filter_map(|k| match &k.node {
+                // We can only check that string literals exist
+                ExprKind::Constant {
+                    value: Constant::Str(value),
+                    ..
+                } => {
+                    if summary.keywords.contains(value) {
+                        None
+                    } else {
+                        Some(value)
                    }
                }
-            }
+                _ => None,
+            })
+            .collect();
+
+        if missing.is_empty() {
            None
+        } else {
+            Some(Check::new(
+                CheckKind::PercentFormatExtraNamedArguments(
+                    missing.iter().map(|&s| s.clone()).collect(),
+                ),
+                location,
+            ))
        }
+    } else {
+        None
+    }
+}
+
+/// F505
+pub(crate) fn percent_format_missing_arguments(
+    summary: &CFormatSummary,
+    right: &Expr,
+    location: Range,
+) -> Option<Check> {
+    if summary.num_positional > 0 {
+        return None;
+    }
+
+    if let ExprKind::Dict { keys, values } = &right.node {
+        if values.len() > keys.len() {
+            return None; // contains **x splat
+        }
+
+        let mut keywords = FxHashSet::default();
+        for key in keys {
+            match &key.node {
+                ExprKind::Constant {
+                    value: Constant::Str(value),
+                    ..
+                } => {
+                    keywords.insert(value);
+                }
+                _ => {
+                    return None; // Dynamic keys present
+                }
+            }
+        }
+
+        let missing: Vec<&String> = summary
+            .keywords
+            .iter()
+            .filter(|k| !keywords.contains(k))
+            .collect();
+
+        if missing.is_empty() {
+            None
+        } else {
+            Some(Check::new(
+                CheckKind::PercentFormatMissingArgument(
+                    missing.iter().map(|&s| s.clone()).collect(),
+                ),
+                location,
+            ))
+        }
+    } else {
+        None
+    }
+}
+
+/// F506
+pub(crate) fn percent_format_mixed_positional_and_named(
+    summary: &CFormatSummary,
+    location: Range,
+) -> Option<Check> {
+    if summary.num_positional == 0 || summary.keywords.is_empty() {
+        None
+    } else {
+        Some(Check::new(
+            CheckKind::PercentFormatMixedPositionalAndNamed,
+            location,
+        ))
+    }
+}
+
+/// F507
+pub(crate) fn percent_format_positional_count_mismatch(
+    summary: &CFormatSummary,
+    right: &Expr,
+    location: Range,
+) -> Option<Check> {
+    if !summary.keywords.is_empty() {
+        return None;
+    }
+
+    match &right.node {
+        ExprKind::List { elts, .. } | ExprKind::Tuple { elts, .. } | ExprKind::Set { elts, .. } => {
+            let mut found = 0;
+            for elt in elts {
+                if let ExprKind::Starred { .. } = &elt.node {
+                    return None;
+                }
+                found += 1;
+            }
+
+            if found == summary.num_positional {
+                None
+            } else {
+                Some(Check::new(
+                    CheckKind::PercentFormatPositionalCountMismatch(summary.num_positional, found),
+                    location,
+                ))
+            }
+        }
+        _ => None,
+    }
+}
+
+/// F508
+pub(crate) fn percent_format_star_requires_sequence(
+    summary: &CFormatSummary,
+    right: &Expr,
+    location: Range,
+) -> Option<Check> {
+    if summary.starred {
+        match &right.node {
+            ExprKind::Dict { .. } | ExprKind::DictComp { .. } => Some(Check::new(
+                CheckKind::PercentFormatStarRequiresSequence,
+                location,
+            )),
+            _ => None,
+        }
+    } else {
+        None
+    }
+}
+
+/// F522
+pub(crate) fn string_dot_format_extra_named_arguments(
+    summary: &FormatSummary,
+    keywords: &[Keyword],
+    location: Range,
+) -> Option<Check> {
+    if has_star_star_kwargs(keywords) {
+        return None;
+    }
+
+    let keywords = keywords.iter().filter_map(|k| {
+        let KeywordData { arg, .. } = &k.node;
+        arg.as_ref()
+    });
+
+    let missing: Vec<&String> = keywords
+        .filter(|&k| !summary.keywords.contains(k))
+        .collect();
+
+    if missing.is_empty() {
+        None
+    } else {
+        Some(Check::new(
+            CheckKind::StringDotFormatExtraNamedArguments(
+                missing.iter().map(|&s| s.clone()).collect(),
+            ),
+            location,
+        ))
+    }
+}
+
+/// F523
+pub(crate) fn string_dot_format_extra_positional_arguments(
+    summary: &FormatSummary,
+    args: &[Expr],
+    location: Range,
+) -> Option<Check> {
+    if has_star_args(args) {
+        return None;
+    }
+
+    let missing: Vec<String> = (0..args.len())
+        .filter(|i| !(summary.autos.contains(i) || summary.indexes.contains(i)))
+        .map(|i| i.to_string())
+        .collect();
+
+    if missing.is_empty() {
+        None
+    } else {
+        Some(Check::new(
+            CheckKind::StringDotFormatExtraPositionalArguments(missing),
+            location,
+        ))
+    }
+}
+
+/// F524
+pub(crate) fn string_dot_format_missing_argument(
+    summary: &FormatSummary,
+    args: &[Expr],
+    keywords: &[Keyword],
+    location: Range,
+) -> Option<Check> {
+    if has_star_args(args) || has_star_star_kwargs(keywords) {
+        return None;
+    }
+
+    let keywords: FxHashSet<_> = keywords
+        .iter()
+        .filter_map(|k| {
+            let KeywordData { arg, .. } = &k.node;
+            arg.as_ref()
+        })
+        .collect();
+
+    let missing: Vec<String> = summary
+        .autos
+        .iter()
+        .chain(summary.indexes.iter())
+        .filter(|&&i| i >= args.len())
+        .map(ToString::to_string)
+        .chain(
+            summary
+                .keywords
+                .iter()
+                .filter(|k| !keywords.contains(k))
+                .cloned(),
+        )
+        .collect();
+
+    if missing.is_empty() {
+        None
+    } else {
+        Some(Check::new(
+            CheckKind::StringDotFormatMissingArguments(missing),
+            location,
+        ))
+    }
+}
+
+/// F525
+pub(crate) fn string_dot_format_mixing_automatic(
+    summary: &FormatSummary,
+    location: Range,
+) -> Option<Check> {
+    if summary.autos.is_empty() || summary.indexes.is_empty() {
+        None
+    } else {
+        Some(Check::new(
+            CheckKind::StringDotFormatMixingAutomatic,
+            location,
+        ))
    }
 }

--- a/src/pyflakes/format.rs
+++ b/src/pyflakes/format.rs
@@ -1,7 +1,12 @@
 //! Implements helper functions for using vendored/format.rs
+use std::convert::TryFrom;
 use std::fmt;

-use crate::vendored::format::FormatParseError;
+use rustc_hash::FxHashSet;
+
+use crate::vendored::format::{
+    FieldName, FieldType, FormatParseError, FormatPart, FormatString, FromTemplate,
+};

 impl fmt::Display for FormatParseError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
@@ -20,3 +25,110 @@ impl fmt::Display for FormatParseError {
        write!(f, "{message}")
    }
 }
+
+pub(crate) struct FormatSummary {
+    pub autos: FxHashSet<usize>,
+    pub indexes: FxHashSet<usize>,
+    pub keywords: FxHashSet<String>,
+}
+
+impl TryFrom<&str> for FormatSummary {
+    type Error = FormatParseError;
+
+    fn try_from(literal: &str) -> Result<Self, Self::Error> {
+        let format_string = FormatString::from_str(literal)?;
+
+        let mut autos = FxHashSet::default();
+        let mut indexes = FxHashSet::default();
+        let mut keywords = FxHashSet::default();
+
+        for format_part in format_string.format_parts {
+            if let FormatPart::Field {
+                field_name,
+                format_spec,
+                ..
+            } = format_part
+            {
+                let parsed = FieldName::parse(&field_name)?;
+                match parsed.field_type {
+                    FieldType::Auto => autos.insert(autos.len()),
+                    FieldType::Index(i) => indexes.insert(i),
+                    FieldType::Keyword(k) => keywords.insert(k),
+                };
+
+                let nested = FormatString::from_str(&format_spec)?;
+                for nested_part in nested.format_parts {
+                    if let FormatPart::Field { field_name, .. } = nested_part {
+                        let parsed = FieldName::parse(&field_name)?;
+                        match parsed.field_type {
+                            FieldType::Auto => autos.insert(autos.len()),
+                            FieldType::Index(i) => indexes.insert(i),
+                            FieldType::Keyword(k) => keywords.insert(k),
+                        };
+                    }
+                }
+            }
+        }
+
+        Ok(FormatSummary {
+            autos,
+            indexes,
+            keywords,
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::vendored::format::FromTemplate;
+
+    #[test]
+    fn test_format_summary() {
+        let literal = "foo{foo}a{}b{2}c{2}d{1}{}{}e{bar}{foo}f{spam}";
+
+        let expected_autos = [0usize, 1usize, 2usize].into_iter().collect();
+        let expected_indexes = [1usize, 2usize].into_iter().collect();
+        let expected_keywords = ["foo", "bar", "spam"]
+            .into_iter()
+            .map(String::from)
+            .collect();
+
+        let format_summary = FormatSummary::try_from(literal).unwrap();
+
+        assert_eq!(format_summary.autos, expected_autos);
+        assert_eq!(format_summary.indexes, expected_indexes);
+        assert_eq!(format_summary.keywords, expected_keywords);
+    }
+
+    #[test]
+    fn test_format_summary_nested() {
+        let literal = "foo{foo}a{:{}{}}b{2:{3}{4}}c{2}d{1}{}e{bar:{spam}{eggs}}";
+
+        let expected_autos = [0usize, 1usize, 2usize, 3usize].into_iter().collect();
+        let expected_indexes = [1usize, 2usize, 3usize, 4usize].into_iter().collect();
+        let expected_keywords = ["foo", "bar", "spam", "eggs"]
+            .into_iter()
+            .map(String::from)
+            .collect();
+
+        let format_summary = FormatSummary::try_from(literal).unwrap();
+
+        assert_eq!(format_summary.autos, expected_autos);
+        assert_eq!(format_summary.indexes, expected_indexes);
+        assert_eq!(format_summary.keywords, expected_keywords);
+    }
+
+    #[test]
+    fn test_format_summary_invalid() {
+        assert!(FormatSummary::try_from("{").is_err());
+
+        let literal = "{foo}a{}b{bar..}";
+        assert!(FormatString::from_str(literal).is_ok());
+        assert!(FormatSummary::try_from(literal).is_err());
+
+        let literal_nested = "{foo}a{}b{bar:{spam..}}";
+        assert!(FormatString::from_str(literal_nested).is_ok());
+        assert!(FormatSummary::try_from(literal_nested).is_err());
+    }
+}
--- a/src/pyflakes/mod.rs
+++ b/src/pyflakes/mod.rs
@@ -1,4 +1,5 @@
+pub mod cformat;
 pub mod checks;
 pub mod fixes;
-mod format;
+pub mod format;
 pub mod plugins;
--- a/src/python/typing.rs
+++ b/src/python/typing.rs
@@ -209,15 +209,21 @@ pub enum SubscriptKind {
    PEP593AnnotatedSubscript,
 }

-pub fn match_annotated_subscript(
+pub fn match_annotated_subscript<F>(
    expr: &Expr,
    from_imports: &FxHashMap<&str, FxHashSet<&str>>,
    import_aliases: &FxHashMap<&str, &str>,
-) -> Option<SubscriptKind> {
+    is_builtin: F,
+) -> Option<SubscriptKind>
+where
+    F: Fn(&str) -> bool,
+{
    let call_path = dealias_call_path(collect_call_paths(expr), import_aliases);
    if !call_path.is_empty() {
        for (module, member) in SUBSCRIPTS {
-            if match_call_path(&call_path, module, member, from_imports) {
+            if match_call_path(&call_path, module, member, from_imports)
+                && (!module.is_empty() || is_builtin(member))
+            {
                return Some(SubscriptKind::AnnotatedSubscript);
            }
        }
--- a/src/pyupgrade/plugins/redundant_open_modes.rs
+++ b/src/pyupgrade/plugins/redundant_open_modes.rs
@@ -2,7 +2,7 @@ use std::str::FromStr;

 use anyhow::{anyhow, Result};
 use log::error;
-use rustpython_ast::{Constant, Expr, ExprKind, Located, Location};
+use rustpython_ast::{Constant, Expr, ExprKind, Keyword, KeywordData, Location};
 use rustpython_parser::lexer;
 use rustpython_parser::token::Tok;

@@ -14,6 +14,7 @@ use crate::checks::{Check, CheckCode, CheckKind};
 use crate::source_code_locator::SourceCodeLocator;

 const OPEN_FUNC_NAME: &str = "open";
+const MODE_KEYWORD_ARGUMENT: &str = "mode";

 enum OpenMode {
    U,
@@ -56,15 +57,19 @@ impl OpenMode {
    }
 }

-fn match_open(expr: &Expr) -> Option<&Expr> {
-    if let ExprKind::Call { func, args, .. } = &expr.node {
-        // TODO(andberger): Verify that "open" is still bound to the built-in function.
+fn match_open(expr: &Expr) -> (Option<&Expr>, Vec<Keyword>) {
+    if let ExprKind::Call {
+        func,
+        args,
+        keywords,
+    } = &expr.node
+    {
        if match_name_or_attr(func, OPEN_FUNC_NAME) {
-            // Return the "open mode" parameter.
-            return args.get(1);
+            // Return the "open mode" parameter and keywords.
+            return (args.get(1), keywords.clone());
        }
    }
-    None
+    (None, vec![])
 }

 fn create_check(
@@ -101,19 +106,36 @@ fn create_remove_param_fix(
        location: expr.location,
        end_location: expr.end_location.unwrap(),
    });
-    // Find the last comma before mode_param
-    // and delete that comma as well as mode_param.
+    // Find the last comma before mode_param and create a deletion fix
+    // starting from the comma and ending after mode_param.
    let mut fix_start: Option<Location> = None;
    let mut fix_end: Option<Location> = None;
+    let mut is_first_arg: bool = false;
+    let mut delete_first_arg: bool = false;
    for (start, tok, end) in lexer::make_tokenizer(&content).flatten() {
        let start = helpers::to_absolute(start, expr.location);
        let end = helpers::to_absolute(end, expr.location);
        if start == mode_param.location {
+            if is_first_arg {
+                delete_first_arg = true;
+                continue;
+            }
            fix_end = Some(end);
            break;
        }
+        if delete_first_arg && matches!(tok, Tok::Name { .. }) {
+            fix_end = Some(start);
+            break;
+        }
+        if matches!(tok, Tok::Lpar) {
+            is_first_arg = true;
+            fix_start = Some(end);
+        }
        if matches!(tok, Tok::Comma) {
-            fix_start = Some(start);
+            is_first_arg = false;
+            if !delete_first_arg {
+                fix_start = Some(start);
+            }
        }
    }
    match (fix_start, fix_end) {
@@ -126,20 +148,45 @@ fn create_remove_param_fix(

 /// U015
 pub fn redundant_open_modes(checker: &mut Checker, expr: &Expr) {
-    // TODO(andberger): Add "mode" keyword argument handling to handle invocations
-    // on the following formats:
-    // - `open("foo", mode="U")`
-    // - `open(name="foo", mode="U")`
-    // - `open(mode="U", name="foo")`
-    if let Some(mode_param) = match_open(expr) {
-        if let Located {
-            node:
-                ExprKind::Constant {
-                    value: Constant::Str(mode_param_value),
-                    ..
-                },
+    // If `open` has been rebound, skip this check entirely.
+    if !checker.is_builtin(OPEN_FUNC_NAME) {
+        return;
+    }
+    let (mode_param, keywords): (Option<&Expr>, Vec<Keyword>) = match_open(expr);
+    if mode_param.is_none() && !keywords.is_empty() {
+        if let Some(value) = keywords.iter().find_map(|keyword| {
+            let KeywordData { arg, value } = &keyword.node;
+            if arg
+                .as_ref()
+                .map(|arg| arg == MODE_KEYWORD_ARGUMENT)
+                .unwrap_or_default()
+            {
+                Some(value)
+            } else {
+                None
+            }
+        }) {
+            if let ExprKind::Constant {
+                value: Constant::Str(mode_param_value),
+                ..
+            } = &value.node
+            {
+                if let Ok(mode) = OpenMode::from_str(mode_param_value.as_str()) {
+                    checker.add_check(create_check(
+                        expr,
+                        value,
+                        mode.replacement_value(),
+                        checker.locator,
+                        checker.patch(&CheckCode::U015),
+                    ));
+                }
+            }
+        }
+    } else if let Some(mode_param) = mode_param {
+        if let ExprKind::Constant {
+            value: Constant::Str(mode_param_value),
            ..
-        } = mode_param
+        } = &mode_param.node
        {
            if let Ok(mode) = OpenMode::from_str(mode_param_value.as_str()) {
                checker.add_check(create_check(
--- a/src/rules/plugins/convert_exit_to_sys_exit.rs
+++ b/src/rules/plugins/convert_exit_to_sys_exit.rs
@@ -21,12 +21,7 @@ fn is_module_star_imported(checker: &Checker, module: &str) -> bool {

 /// Return `true` if `exit` is (still) bound as a built-in in the current scope.
 fn has_builtin_exit_in_scope(checker: &Checker) -> bool {
-    !is_module_star_imported(checker, "sys")
-        && checker
-            .current_scopes()
-            .find_map(|scope| scope.values.get("exit"))
-            .map(|binding| matches!(binding.kind, BindingKind::Builtin))
-            .unwrap_or_default()
+    !is_module_star_imported(checker, "sys") && checker.is_builtin("exit")
 }

 /// Return the appropriate `sys.exit` reference based on the current set of
--- a/src/settings/configuration.rs
+++ b/src/settings/configuration.rs
@@ -9,7 +9,7 @@ use once_cell::sync::Lazy;
 use path_absolutize::path_dedot;
 use regex::Regex;

-use crate::checks_gen::CheckCodePrefix;
+use crate::checks_gen::{CheckCodePrefix, CATEGORIES};
 use crate::settings::pyproject::load_options;
 use crate::settings::types::{FilePattern, PerFileIgnore, PythonVersion};
 use crate::{
@@ -117,28 +117,7 @@ impl Configuration {
                .unwrap_or_else(|| vec![CheckCodePrefix::E, CheckCodePrefix::F]),
            extend_select: options.extend_select.unwrap_or_default(),
            fix: options.fix.unwrap_or_default(),
-            fixable: options.fixable.unwrap_or_else(|| {
-                // TODO(charlie): Autogenerate this list.
-                vec![
-                    CheckCodePrefix::A,
-                    CheckCodePrefix::B,
-                    CheckCodePrefix::BLE,
-                    CheckCodePrefix::C,
-                    CheckCodePrefix::D,
-                    CheckCodePrefix::E,
-                    CheckCodePrefix::F,
-                    CheckCodePrefix::I,
-                    CheckCodePrefix::M,
-                    CheckCodePrefix::N,
-                    CheckCodePrefix::Q,
-                    CheckCodePrefix::RUF,
-                    CheckCodePrefix::S,
-                    CheckCodePrefix::T,
-                    CheckCodePrefix::U,
-                    CheckCodePrefix::W,
-                    CheckCodePrefix::YTT,
-                ]
-            }),
+            fixable: options.fixable.unwrap_or_else(|| CATEGORIES.to_vec()),
            unfixable: options.unfixable.unwrap_or_default(),
            ignore: options.ignore.unwrap_or_default(),
            line_length: options.line_length.unwrap_or(88),
--- a/src/snapshots/rufflintertests__B023_B023.py.snap
+++ b/src/snapshots/rufflintertests__B023_B023.py.snap
@@ -0,0 +1,158 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 12
+    column: 29
+  end_location:
+    row: 12
+    column: 30
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: y
+  location:
+    row: 13
+    column: 29
+  end_location:
+    row: 13
+    column: 30
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 16
+    column: 15
+  end_location:
+    row: 16
+    column: 16
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 28
+    column: 18
+  end_location:
+    row: 28
+    column: 19
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 29
+    column: 18
+  end_location:
+    row: 29
+    column: 19
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 30
+    column: 18
+  end_location:
+    row: 30
+    column: 19
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 31
+    column: 21
+  end_location:
+    row: 31
+    column: 22
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 40
+    column: 33
+  end_location:
+    row: 40
+    column: 34
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: x
+  location:
+    row: 42
+    column: 13
+  end_location:
+    row: 42
+    column: 14
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: a
+  location:
+    row: 50
+    column: 29
+  end_location:
+    row: 50
+    column: 30
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: a_
+  location:
+    row: 51
+    column: 29
+  end_location:
+    row: 51
+    column: 31
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: b
+  location:
+    row: 52
+    column: 29
+  end_location:
+    row: 52
+    column: 30
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: c
+  location:
+    row: 53
+    column: 29
+  end_location:
+    row: 53
+    column: 30
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: j
+  location:
+    row: 61
+    column: 16
+  end_location:
+    row: 61
+    column: 17
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: k
+  location:
+    row: 61
+    column: 20
+  end_location:
+    row: 61
+    column: 21
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: l
+  location:
+    row: 68
+    column: 9
+  end_location:
+    row: 68
+    column: 10
+  fix: ~
+- kind:
+    FunctionUsesLoopVariable: i
+  location:
+    row: 82
+    column: 12
+  end_location:
+    row: 82
+    column: 18
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F501_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F501_F50x.py.snap
@@ -0,0 +1,14 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    PercentFormatInvalidFormat: incomplete format
+  location:
+    row: 1
+    column: 9
+  end_location:
+    row: 1
+    column: 25
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F502_F502.py.snap
+++ b/src/snapshots/rufflintertests__F502_F502.py.snap
@@ -0,0 +1,61 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 6
+    column: 10
+  end_location:
+    row: 6
+    column: 19
+  fix: ~
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 7
+    column: 10
+  end_location:
+    row: 7
+    column: 20
+  fix: ~
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 8
+    column: 10
+  end_location:
+    row: 8
+    column: 19
+  fix: ~
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 9
+    column: 10
+  end_location:
+    row: 9
+    column: 22
+  fix: ~
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 11
+    column: 10
+  end_location:
+    row: 11
+    column: 37
+  fix: ~
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 12
+    column: 10
+  end_location:
+    row: 12
+    column: 37
+  fix: ~
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 13
+    column: 10
+  end_location:
+    row: 13
+    column: 37
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F502_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F502_F50x.py.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PercentFormatExpectedMapping
+  location:
+    row: 9
+    column: 10
+  end_location:
+    row: 9
+    column: 21
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F503_F503.py.snap
+++ b/src/snapshots/rufflintertests__F503_F503.py.snap
@@ -0,0 +1,29 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PercentFormatExpectedSequence
+  location:
+    row: 17
+    column: 8
+  end_location:
+    row: 17
+    column: 24
+  fix: ~
+- kind: PercentFormatExpectedSequence
+  location:
+    row: 18
+    column: 8
+  end_location:
+    row: 18
+    column: 28
+  fix: ~
+- kind: PercentFormatExpectedSequence
+  location:
+    row: 23
+    column: 8
+  end_location:
+    row: 23
+    column: 42
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F503_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F503_F50x.py.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PercentFormatExpectedSequence
+  location:
+    row: 10
+    column: 8
+  end_location:
+    row: 10
+    column: 20
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F504_F504.py.snap
+++ b/src/snapshots/rufflintertests__F504_F504.py.snap
@@ -0,0 +1,15 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    PercentFormatExtraNamedArguments:
+      - b
+  location:
+    row: 3
+    column: 14
+  end_location:
+    row: 3
+    column: 34
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F504_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F504_F50x.py.snap
@@ -0,0 +1,15 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    PercentFormatExtraNamedArguments:
+      - baz
+  location:
+    row: 8
+    column: 10
+  end_location:
+    row: 8
+    column: 32
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F505_F504.py.snap
+++ b/src/snapshots/rufflintertests__F505_F504.py.snap
@@ -0,0 +1,6 @@
+---
+source: src/linter.rs
+expression: checks
+---
+[]
+
--- a/src/snapshots/rufflintertests__F505_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F505_F50x.py.snap
@@ -0,0 +1,15 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    PercentFormatMissingArgument:
+      - bar
+  location:
+    row: 7
+    column: 10
+  end_location:
+    row: 7
+    column: 14
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F506_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F506_F50x.py.snap
@@ -0,0 +1,29 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PercentFormatMixedPositionalAndNamed
+  location:
+    row: 2
+    column: 13
+  end_location:
+    row: 2
+    column: 29
+  fix: ~
+- kind: PercentFormatMixedPositionalAndNamed
+  location:
+    row: 3
+    column: 13
+  end_location:
+    row: 3
+    column: 29
+  fix: ~
+- kind: PercentFormatMixedPositionalAndNamed
+  location:
+    row: 11
+    column: 11
+  end_location:
+    row: 11
+    column: 27
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F507_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F507_F50x.py.snap
@@ -0,0 +1,27 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    PercentFormatPositionalCountMismatch:
+      - 2
+      - 1
+  location:
+    row: 5
+    column: 8
+  end_location:
+    row: 5
+    column: 14
+  fix: ~
+- kind:
+    PercentFormatPositionalCountMismatch:
+      - 2
+      - 3
+  location:
+    row: 6
+    column: 8
+  end_location:
+    row: 6
+    column: 19
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F508_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F508_F50x.py.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PercentFormatStarRequiresSequence
+  location:
+    row: 11
+    column: 11
+  end_location:
+    row: 11
+    column: 27
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F509_F50x.py.snap
+++ b/src/snapshots/rufflintertests__F509_F50x.py.snap
@@ -0,0 +1,14 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    PercentFormatUnsupportedFormatCharacter: j
+  location:
+    row: 4
+    column: 5
+  end_location:
+    row: 4
+    column: 11
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F522_F522.py.snap
+++ b/src/snapshots/rufflintertests__F522_F522.py.snap
@@ -0,0 +1,36 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    StringDotFormatExtraNamedArguments:
+      - bar
+  location:
+    row: 1
+    column: 0
+  end_location:
+    row: 1
+    column: 21
+  fix: ~
+- kind:
+    StringDotFormatExtraNamedArguments:
+      - spam
+  location:
+    row: 2
+    column: 0
+  end_location:
+    row: 2
+    column: 34
+  fix: ~
+- kind:
+    StringDotFormatExtraNamedArguments:
+      - eggs
+      - ham
+  location:
+    row: 4
+    column: 0
+  end_location:
+    row: 4
+    column: 51
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F523_F523.py.snap
+++ b/src/snapshots/rufflintertests__F523_F523.py.snap
@@ -0,0 +1,77 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "1"
+  location:
+    row: 2
+    column: 0
+  end_location:
+    row: 2
+    column: 18
+  fix: ~
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "0"
+      - "2"
+  location:
+    row: 3
+    column: 0
+  end_location:
+    row: 3
+    column: 21
+  fix: ~
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "2"
+  location:
+    row: 5
+    column: 0
+  end_location:
+    row: 5
+    column: 25
+  fix: ~
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "1"
+  location:
+    row: 6
+    column: 0
+  end_location:
+    row: 6
+    column: 21
+  fix: ~
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "1"
+  location:
+    row: 9
+    column: 0
+  end_location:
+    row: 9
+    column: 17
+  fix: ~
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "1"
+      - "2"
+  location:
+    row: 10
+    column: 0
+  end_location:
+    row: 10
+    column: 20
+  fix: ~
+- kind:
+    StringDotFormatExtraPositionalArguments:
+      - "2"
+  location:
+    row: 12
+    column: 0
+  end_location:
+    row: 12
+    column: 23
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F524_F524.py.snap
+++ b/src/snapshots/rufflintertests__F524_F524.py.snap
@@ -0,0 +1,67 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    StringDotFormatMissingArguments:
+      - "1"
+  location:
+    row: 1
+    column: 0
+  end_location:
+    row: 1
+    column: 17
+  fix: ~
+- kind:
+    StringDotFormatMissingArguments:
+      - "2"
+  location:
+    row: 2
+    column: 0
+  end_location:
+    row: 2
+    column: 14
+  fix: ~
+- kind:
+    StringDotFormatMissingArguments:
+      - bar
+  location:
+    row: 3
+    column: 0
+  end_location:
+    row: 3
+    column: 16
+  fix: ~
+- kind:
+    StringDotFormatMissingArguments:
+      - bar
+  location:
+    row: 4
+    column: 0
+  end_location:
+    row: 4
+    column: 21
+  fix: ~
+- kind:
+    StringDotFormatMissingArguments:
+      - "0"
+      - bar
+  location:
+    row: 5
+    column: 0
+  end_location:
+    row: 5
+    column: 20
+  fix: ~
+- kind:
+    StringDotFormatMissingArguments:
+      - "0"
+      - bar
+  location:
+    row: 6
+    column: 0
+  end_location:
+    row: 6
+    column: 20
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F525_F525.py.snap
+++ b/src/snapshots/rufflintertests__F525_F525.py.snap
@@ -0,0 +1,21 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: StringDotFormatMixingAutomatic
+  location:
+    row: 1
+    column: 0
+  end_location:
+    row: 1
+    column: 21
+  fix: ~
+- kind: StringDotFormatMixingAutomatic
+  location:
+    row: 2
+    column: 0
+  end_location:
+    row: 2
+    column: 21
+  fix: ~
+
--- a/src/snapshots/rufflintertests__T100_T100.py.snap
+++ b/src/snapshots/rufflintertests__T100_T100.py.snap
@@ -0,0 +1,95 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    Debugger:
+      Call: breakpoint
+  location:
+    row: 1
+    column: 0
+  end_location:
+    row: 1
+    column: 12
+  fix: ~
+- kind:
+    Debugger:
+      Import: pdb
+  location:
+    row: 4
+    column: 0
+  end_location:
+    row: 4
+    column: 10
+  fix: ~
+- kind:
+    Debugger:
+      Import: builtins.breakpoint
+  location:
+    row: 5
+    column: 0
+  end_location:
+    row: 5
+    column: 31
+  fix: ~
+- kind:
+    Debugger:
+      Import: pdb.set_trace
+  location:
+    row: 6
+    column: 0
+  end_location:
+    row: 6
+    column: 31
+  fix: ~
+- kind:
+    Debugger:
+      Import: celery.contrib.rdb.set_trace
+  location:
+    row: 7
+    column: 0
+  end_location:
+    row: 7
+    column: 40
+  fix: ~
+- kind:
+    Debugger:
+      Import: celery.contrib.rdb
+  location:
+    row: 9
+    column: 0
+  end_location:
+    row: 9
+    column: 25
+  fix: ~
+- kind:
+    Debugger:
+      Call: breakpoint
+  location:
+    row: 12
+    column: 0
+  end_location:
+    row: 12
+    column: 12
+  fix: ~
+- kind:
+    Debugger:
+      Call: set_trace
+  location:
+    row: 13
+    column: 0
+  end_location:
+    row: 13
+    column: 4
+  fix: ~
+- kind:
+    Debugger:
+      Call: set_trace
+  location:
+    row: 14
+    column: 0
+  end_location:
+    row: 14
+    column: 11
+  fix: ~
+
--- a/src/snapshots/rufflintertests__U009_U009_0.py.snap
+++ b/src/snapshots/rufflintertests__U009_U009_0.py.snap
@@ -7,8 +7,8 @@ expression: checks
    row: 1
    column: 0
  end_location:
-    row: 1
-    column: 14
+    row: 2
+    column: 0
  fix:
    patch:
      content: ""
@@ -16,6 +16,6 @@ expression: checks
        row: 1
        column: 0
      end_location:
-        row: 1
-        column: 14
+        row: 2
+        column: 0

--- a/src/snapshots/rufflintertests__U009_U009_1.py.snap
+++ b/src/snapshots/rufflintertests__U009_U009_1.py.snap
@@ -7,8 +7,8 @@ expression: checks
    row: 2
    column: 0
  end_location:
-    row: 2
-    column: 24
+    row: 3
+    column: 0
  fix:
    patch:
      content: ""
@@ -16,6 +16,6 @@ expression: checks
        row: 2
        column: 0
      end_location:
-        row: 2
-        column: 24
+        row: 3
+        column: 0

--- a/src/snapshots/rufflintertests__U009_U009_4.py.snap
+++ b/src/snapshots/rufflintertests__U009_U009_4.py.snap
@@ -0,0 +1,6 @@
+---
+source: src/linter.rs
+expression: checks
+---
+[]
+
--- a/src/snapshots/rufflintertests__U015_U015.py.snap
+++ b/src/snapshots/rufflintertests__U015_U015.py.snap
@@ -386,4 +386,324 @@ expression: checks
      end_location:
        row: 37
        column: 46
+- kind: RedundantOpenModes
+  location:
+    row: 40
+    column: 0
+  end_location:
+    row: 40
+    column: 21
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 40
+        column: 10
+      end_location:
+        row: 40
+        column: 20
+- kind: RedundantOpenModes
+  location:
+    row: 41
+    column: 0
+  end_location:
+    row: 41
+    column: 26
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 41
+        column: 15
+      end_location:
+        row: 41
+        column: 25
+- kind: RedundantOpenModes
+  location:
+    row: 42
+    column: 0
+  end_location:
+    row: 42
+    column: 26
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 42
+        column: 5
+      end_location:
+        row: 42
+        column: 15
+- kind: RedundantOpenModes
+  location:
+    row: 44
+    column: 5
+  end_location:
+    row: 44
+    column: 26
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 44
+        column: 15
+      end_location:
+        row: 44
+        column: 25
+- kind: RedundantOpenModes
+  location:
+    row: 46
+    column: 5
+  end_location:
+    row: 46
+    column: 31
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 46
+        column: 20
+      end_location:
+        row: 46
+        column: 30
+- kind: RedundantOpenModes
+  location:
+    row: 48
+    column: 5
+  end_location:
+    row: 48
+    column: 31
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 48
+        column: 10
+      end_location:
+        row: 48
+        column: 20
+- kind: RedundantOpenModes
+  location:
+    row: 51
+    column: 0
+  end_location:
+    row: 51
+    column: 22
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 51
+        column: 17
+      end_location:
+        row: 51
+        column: 21
+- kind: RedundantOpenModes
+  location:
+    row: 52
+    column: 0
+  end_location:
+    row: 52
+    column: 27
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 52
+        column: 22
+      end_location:
+        row: 52
+        column: 26
+- kind: RedundantOpenModes
+  location:
+    row: 53
+    column: 0
+  end_location:
+    row: 53
+    column: 27
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 53
+        column: 10
+      end_location:
+        row: 53
+        column: 14
+- kind: RedundantOpenModes
+  location:
+    row: 55
+    column: 5
+  end_location:
+    row: 55
+    column: 27
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 55
+        column: 22
+      end_location:
+        row: 55
+        column: 26
+- kind: RedundantOpenModes
+  location:
+    row: 57
+    column: 5
+  end_location:
+    row: 57
+    column: 32
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 57
+        column: 27
+      end_location:
+        row: 57
+        column: 31
+- kind: RedundantOpenModes
+  location:
+    row: 59
+    column: 5
+  end_location:
+    row: 59
+    column: 32
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 59
+        column: 15
+      end_location:
+        row: 59
+        column: 19
+- kind: RedundantOpenModes
+  location:
+    row: 62
+    column: 0
+  end_location:
+    row: 62
+    column: 110
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 62
+        column: 15
+      end_location:
+        row: 62
+        column: 25
+- kind: RedundantOpenModes
+  location:
+    row: 63
+    column: 0
+  end_location:
+    row: 63
+    column: 110
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 63
+        column: 99
+      end_location:
+        row: 63
+        column: 109
+- kind: RedundantOpenModes
+  location:
+    row: 64
+    column: 0
+  end_location:
+    row: 64
+    column: 110
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 64
+        column: 58
+      end_location:
+        row: 64
+        column: 68
+- kind: RedundantOpenModes
+  location:
+    row: 65
+    column: 0
+  end_location:
+    row: 65
+    column: 110
+  fix:
+    patch:
+      content: ""
+      location:
+        row: 65
+        column: 5
+      end_location:
+        row: 65
+        column: 15
+- kind: RedundantOpenModes
+  location:
+    row: 67
+    column: 0
+  end_location:
+    row: 67
+    column: 111
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 67
+        column: 22
+      end_location:
+        row: 67
+        column: 26
+- kind: RedundantOpenModes
+  location:
+    row: 68
+    column: 0
+  end_location:
+    row: 68
+    column: 111
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 68
+        column: 106
+      end_location:
+        row: 68
+        column: 110
+- kind: RedundantOpenModes
+  location:
+    row: 69
+    column: 0
+  end_location:
+    row: 69
+    column: 111
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 69
+        column: 65
+      end_location:
+        row: 69
+        column: 69
+- kind: RedundantOpenModes
+  location:
+    row: 70
+    column: 0
+  end_location:
+    row: 70
+    column: 111
+  fix:
+    patch:
+      content: "\"rb\""
+      location:
+        row: 70
+        column: 10
+      end_location:
+        row: 70
+        column: 14

--- a/src/vendored/cformat.rs
+++ b/src/vendored/cformat.rs
@@ -0,0 +1,413 @@
+//! Implementation of Printf-Style string formatting
+//! as per the [Python Docs](https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting).
+//! Vendored from [cformat.rs in rustpython-vm](https://github.com/RustPython/RustPython/blob/f54b5556e28256763c5506813ea977c9e1445af0/vm/src/cformat.rs).
+//! The only changes we make are to remove dead code and code involving the vm.
+use std::fmt;
+use std::iter::{Enumerate, Peekable};
+use std::str::FromStr;
+
+#[derive(Debug, PartialEq)]
+pub(crate) enum CFormatErrorType {
+    UnmatchedKeyParentheses,
+    MissingModuloSign,
+    UnsupportedFormatChar(char),
+    IncompleteFormat,
+    IntTooBig,
+    // Unimplemented,
+}
+
+// also contains how many chars the parsing function consumed
+type ParsingError = (CFormatErrorType, usize);
+
+#[derive(Debug, PartialEq)]
+pub(crate) struct CFormatError {
+    pub(crate) typ: CFormatErrorType,
+    index: usize,
+}
+
+impl fmt::Display for CFormatError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        use CFormatErrorType::{
+            IntTooBig, MissingModuloSign, UnmatchedKeyParentheses, UnsupportedFormatChar,
+        };
+        match self.typ {
+            UnmatchedKeyParentheses => write!(f, "incomplete format key"),
+            CFormatErrorType::IncompleteFormat => write!(f, "incomplete format"),
+            UnsupportedFormatChar(c) => write!(
+                f,
+                "unsupported format character '{}' ({:#x}) at index {}",
+                c, c as u32, self.index
+            ),
+            IntTooBig => write!(f, "width/precision too big"),
+            MissingModuloSign => write!(f, "unexpected error parsing format string"),
+        }
+    }
+}
+
+#[derive(Debug, PartialEq)]
+pub(crate) enum CFormatQuantity {
+    Amount(usize),
+    FromValuesTuple,
+}
+
+#[derive(Debug, PartialEq)]
+pub(crate) struct CFormatSpec {
+    pub mapping_key: Option<String>,
+    pub min_field_width: Option<CFormatQuantity>,
+    pub precision: Option<CFormatQuantity>,
+}
+
+impl CFormatSpec {
+    fn parse<T, I>(iter: &mut ParseIter<I>) -> Result<Self, ParsingError>
+    where
+        T: Into<char> + Copy,
+        I: Iterator<Item = T>,
+    {
+        let mapping_key = parse_spec_mapping_key(iter)?;
+        consume_flags(iter);
+        let min_field_width = parse_quantity(iter)?;
+        let precision = parse_precision(iter)?;
+        consume_length(iter);
+        parse_format_type(iter)?;
+
+        Ok(CFormatSpec {
+            mapping_key,
+            min_field_width,
+            precision,
+        })
+    }
+}
+
+#[derive(Debug, PartialEq)]
+pub(crate) enum CFormatPart<T> {
+    Literal(T),
+    Spec(CFormatSpec),
+}
+
+#[derive(Debug, PartialEq)]
+pub(crate) struct CFormatString {
+    pub parts: Vec<(usize, CFormatPart<String>)>,
+}
+
+impl FromStr for CFormatString {
+    type Err = CFormatError;
+
+    fn from_str(text: &str) -> Result<Self, Self::Err> {
+        let mut iter = text.chars().enumerate().peekable();
+        Self::parse(&mut iter)
+    }
+}
+
+impl CFormatString {
+    pub(crate) fn parse<I: Iterator<Item = char>>(
+        iter: &mut ParseIter<I>,
+    ) -> Result<Self, CFormatError> {
+        let mut parts = vec![];
+        let mut literal = String::new();
+        let mut part_index = 0;
+        while let Some((index, c)) = iter.next() {
+            if c == '%' {
+                if let Some(&(_, second)) = iter.peek() {
+                    if second == '%' {
+                        iter.next().unwrap();
+                        literal.push('%');
+                        continue;
+                    }
+                    if !literal.is_empty() {
+                        parts.push((
+                            part_index,
+                            CFormatPart::Literal(std::mem::take(&mut literal)),
+                        ));
+                    }
+                    let spec = CFormatSpec::parse(iter).map_err(|err| CFormatError {
+                        typ: err.0,
+                        index: err.1,
+                    })?;
+                    parts.push((index, CFormatPart::Spec(spec)));
+                    if let Some(&(index, _)) = iter.peek() {
+                        part_index = index;
+                    }
+                } else {
+                    return Err(CFormatError {
+                        typ: CFormatErrorType::IncompleteFormat,
+                        index: index + 1,
+                    });
+                }
+            } else {
+                literal.push(c);
+            }
+        }
+        if !literal.is_empty() {
+            parts.push((part_index, CFormatPart::Literal(literal)));
+        }
+        Ok(Self { parts })
+    }
+}
+
+type ParseIter<I> = Peekable<Enumerate<I>>;
+
+fn parse_quantity<T, I>(iter: &mut ParseIter<I>) -> Result<Option<CFormatQuantity>, ParsingError>
+where
+    T: Into<char> + Copy,
+    I: Iterator<Item = T>,
+{
+    #![allow(clippy::cast_possible_wrap)] // A single digit will never overflow
+
+    if let Some(&(_, c)) = iter.peek() {
+        let c: char = c.into();
+        if c == '*' {
+            iter.next().unwrap();
+            return Ok(Some(CFormatQuantity::FromValuesTuple));
+        }
+        if let Some(i) = c.to_digit(10) {
+            let mut num = i as i32;
+            iter.next().unwrap();
+            while let Some(&(index, c)) = iter.peek() {
+                if let Some(i) = c.into().to_digit(10) {
+                    num = num
+                        .checked_mul(10)
+                        .and_then(|num| num.checked_add(i as i32))
+                        .ok_or((CFormatErrorType::IntTooBig, index))?;
+                    iter.next().unwrap();
+                } else {
+                    break;
+                }
+            }
+            return Ok(Some(CFormatQuantity::Amount(num.unsigned_abs() as usize)));
+        }
+    }
+    Ok(None)
+}
+
+fn parse_precision<T, I>(iter: &mut ParseIter<I>) -> Result<Option<CFormatQuantity>, ParsingError>
+where
+    T: Into<char> + Copy,
+    I: Iterator<Item = T>,
+{
+    if let Some(&(_, c)) = iter.peek() {
+        if c.into() == '.' {
+            iter.next().unwrap();
+            return parse_quantity(iter);
+        }
+    }
+    Ok(None)
+}
+
+fn parse_text_inside_parentheses<T, I>(iter: &mut ParseIter<I>) -> Option<String>
+where
+    T: Into<char>,
+    I: Iterator<Item = T>,
+{
+    let mut counter: i32 = 1;
+    let mut contained_text = String::new();
+    loop {
+        let (_, c) = iter.next()?;
+        let c = c.into();
+        match c {
+            _ if c == '(' => {
+                counter += 1;
+            }
+            _ if c == ')' => {
+                counter -= 1;
+            }
+            _ => (),
+        }
+
+        if counter > 0 {
+            contained_text.push(c);
+        } else {
+            break;
+        }
+    }
+
+    Some(contained_text)
+}
+
+fn parse_spec_mapping_key<T, I>(iter: &mut ParseIter<I>) -> Result<Option<String>, ParsingError>
+where
+    T: Into<char> + Copy,
+    I: Iterator<Item = T>,
+{
+    if let Some(&(index, c)) = iter.peek() {
+        if c.into() == '(' {
+            iter.next().unwrap();
+            return match parse_text_inside_parentheses(iter) {
+                Some(key) => Ok(Some(key)),
+                None => Err((CFormatErrorType::UnmatchedKeyParentheses, index)),
+            };
+        }
+    }
+    Ok(None)
+}
+
+fn consume_flags<T, I>(iter: &mut ParseIter<I>)
+where
+    T: Into<char> + Copy,
+    I: Iterator<Item = T>,
+{
+    while let Some(&(_, c)) = iter.peek() {
+        match c.into() {
+            '#' | '0' | '-' | ' ' | '+' => {
+                iter.next().unwrap();
+                continue;
+            }
+            _ => break,
+        };
+    }
+}
+
+fn consume_length<T, I>(iter: &mut ParseIter<I>)
+where
+    T: Into<char> + Copy,
+    I: Iterator<Item = T>,
+{
+    if let Some(&(_, c)) = iter.peek() {
+        let c = c.into();
+        if c == 'h' || c == 'l' || c == 'L' {
+            iter.next().unwrap();
+        }
+    }
+}
+
+fn parse_format_type<T, I>(iter: &mut ParseIter<I>) -> Result<(), ParsingError>
+where
+    T: Into<char>,
+    I: Iterator<Item = T>,
+{
+    let (index, c) = match iter.next() {
+        Some((index, c)) => (index, c.into()),
+        None => {
+            return Err((
+                CFormatErrorType::IncompleteFormat,
+                iter.peek().map_or(0, |x| x.0),
+            ));
+        }
+    };
+    match c {
+        'd' | 'i' | 'u' | 'o' | 'x' | 'X' | 'e' | 'E' | 'f' | 'F' | 'g' | 'G' | 'c' | 'r' | 's'
+        | 'b' | 'a' => Ok(()),
+        _ => Err((CFormatErrorType::UnsupportedFormatChar(c), index)),
+    }
+}
+
+impl FromStr for CFormatSpec {
+    type Err = ParsingError;
+
+    fn from_str(text: &str) -> Result<Self, Self::Err> {
+        let mut chars = text.chars().enumerate().peekable();
+        if chars.next().map(|x| x.1) != Some('%') {
+            return Err((CFormatErrorType::MissingModuloSign, 1));
+        }
+
+        CFormatSpec::parse(&mut chars)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse_key() {
+        let expected = Ok(CFormatSpec {
+            mapping_key: Some("amount".to_owned()),
+            min_field_width: None,
+            precision: None,
+        });
+        assert_eq!("%(amount)d".parse::<CFormatSpec>(), expected);
+
+        let expected = Ok(CFormatSpec {
+            mapping_key: Some("m((u(((l((((ti))))p)))l))e".to_owned()),
+            min_field_width: None,
+            precision: None,
+        });
+        assert_eq!(
+            "%(m((u(((l((((ti))))p)))l))e)d".parse::<CFormatSpec>(),
+            expected
+        );
+    }
+
+    #[test]
+    fn test_format_parse_key_fail() {
+        assert_eq!(
+            "%(aged".parse::<CFormatString>(),
+            Err(CFormatError {
+                typ: CFormatErrorType::UnmatchedKeyParentheses,
+                index: 1
+            })
+        );
+    }
+
+    #[test]
+    fn test_format_parse_type_fail() {
+        assert_eq!(
+            "Hello %n".parse::<CFormatString>(),
+            Err(CFormatError {
+                typ: CFormatErrorType::UnsupportedFormatChar('n'),
+                index: 7
+            })
+        );
+    }
+
+    #[test]
+    fn test_incomplete_format_fail() {
+        assert_eq!(
+            "Hello %".parse::<CFormatString>(),
+            Err(CFormatError {
+                typ: CFormatErrorType::IncompleteFormat,
+                index: 7
+            })
+        );
+    }
+
+    #[test]
+    fn test_consume_flags() {
+        let expected = Ok(CFormatSpec {
+            min_field_width: Some(CFormatQuantity::Amount(10)),
+            precision: None,
+            mapping_key: None,
+        });
+        let parsed = "%  0   -+++###10d".parse::<CFormatSpec>();
+        assert_eq!(parsed, expected);
+    }
+
+    #[test]
+    fn test_parse_string() {
+        assert!("%5.4s".parse::<CFormatSpec>().is_ok());
+        assert!("%-5.4s".parse::<CFormatSpec>().is_ok());
+    }
+
+    #[test]
+    fn test_format_parse() {
+        let fmt = "Hello, my name is %s and I'm %d years old";
+        let expected = Ok(CFormatString {
+            parts: vec![
+                (0, CFormatPart::Literal("Hello, my name is ".to_owned())),
+                (
+                    18,
+                    CFormatPart::Spec(CFormatSpec {
+                        mapping_key: None,
+                        min_field_width: None,
+                        precision: None,
+                    }),
+                ),
+                (20, CFormatPart::Literal(" and I'm ".to_owned())),
+                (
+                    29,
+                    CFormatPart::Spec(CFormatSpec {
+                        mapping_key: None,
+                        min_field_width: None,
+                        precision: None,
+                    }),
+                ),
+                (31, CFormatPart::Literal(" years old".to_owned())),
+            ],
+        });
+        let result = fmt.parse::<CFormatString>();
+        assert_eq!(
+            result, expected,
+            "left = {:#?} \n\n\n right = {:#?}",
+            result, expected
+        );
+    }
+}
--- a/src/vendored/mod.rs
+++ b/src/vendored/mod.rs
@@ -1 +1,2 @@
+pub mod cformat;
 pub mod format;
Author	SHA1	Message	Date
Charlie Marsh	e2c4a098de	Bump version to 0.0.142	2022-11-28 00:19:27 -05:00
Charlie Marsh	e865f58426	Add all plugin options to README reference (#936 )	2022-11-28 00:19:14 -05:00
messense	23b4e16b1d	Add shell completions support (#935 )	2022-11-27 23:59:36 -05:00
Charlie Marsh	ae2ac905dc	Document all top-level configuration options (#934 )	2022-11-27 23:50:24 -05:00
Charlie Marsh	55619b321a	Run cargo fmt	2022-11-27 22:58:42 -05:00
Harutaka Kawamura	6f31b002f8	Do not enforce line length limit for comments ending with a URL (#920 )	2022-11-27 22:36:17 -05:00
Charlie Marsh	1a79965aa0	Allow varargs and kwargs to be prefixed with stars (#933 )	2022-11-27 22:08:27 -05:00
Charlie Marsh	16da183f8e	Add some user testimonials (#932 )	2022-11-27 21:55:01 -05:00
Charlie Marsh	3f689917cb	Use alternative TOML format for per-file-ignores in README (#931 )	2022-11-27 21:38:43 -05:00
Charlie Marsh	a4a215e8a3	Add Homebrew installation to README (#930 )	2022-11-27 21:37:34 -05:00
Charlie Marsh	aa1c884910	Tweak Flake8 parity in README	2022-11-27 21:34:47 -05:00
Oliver Margetts	7fb55c6d99	F50x implementation (#919 )	2022-11-27 21:30:55 -05:00
Charlie Marsh	04ea523ad8	Track aliased import-from members (#929 )	2022-11-27 17:27:27 -05:00
Charlie Marsh	9897f81cf3	Bump version to 0.0.141	2022-11-26 16:33:08 -05:00
Charlie Marsh	1a2559b001	Avoid flagging redundant open modes when open is rebound (#918 )	2022-11-26 16:24:41 -05:00
Denis Gavrilyuk	721a1e9443	Add flake8-debugger (#909 )	2022-11-26 16:21:03 -05:00
Charlie Marsh	f38bba18ee	Fix clippy warnings	2022-11-26 15:56:33 -05:00
Charlie Marsh	14cf36f922	Bump version to 0.0.140	2022-11-26 15:05:46 -05:00
Charlie Marsh	d28e026525	Preserve existing noqa codes in --add-noqa (#913 )	2022-11-26 14:42:19 -05:00
Jonathan Plasse	d19a8aa54d	Auto-generate CheckCodePrefix::fixables() (#916 )	2022-11-26 14:10:30 -05:00
Charlie Marsh	f299940452	Respect noqa comments in U009 (#917 )	2022-11-26 14:03:18 -05:00
Charlie Marsh	e1ab7163ac	Respect f-string locations in B023 check (#914 )	2022-11-26 10:31:23 -05:00
Jonathan Plasse	9edc479c6c	Fix F821 false positive (#911 )	2022-11-26 10:12:07 -05:00
Charlie Marsh	560558b814	Bump version to 0.0.139	2022-11-25 18:38:26 -05:00
Andri Bergsson	bef601b994	Add keyword argument handling for redundant open modes. (#906 )	2022-11-25 18:38:05 -05:00
Charlie Marsh	7445d00b88	Implement B023 (function uses loop variable) (#907 )	2022-11-25 18:29:54 -05:00
Charlie Marsh	7c78d4e103	Use docstring comment for CheckCode	2022-11-25 13:15:43 -05:00
Oliver Margetts	8b14f1b8cc	Implement F522-F525 (#899 )	2022-11-25 13:14:31 -05:00
Xuan (Sean) Hu	5a6b51e623	Minor changes in README. (#903 )	2022-11-25 09:49:16 -05:00