Enable the RUF100 lint in Ruff

.ruff.toml

@@ -266,7 +266,7 @@ select = [
     "RUF046",  # Value being casted is already an integer
     "RUF048",  # `__version__` may contain non-integral-like elements
     "RUF055",  # Plain string pattern passed to `re` function
-#    "RUF100",  # Unused `noqa` directive
+    "RUF100",  # Unused `noqa` directive
     "RUF101",  # `{original}` is a redirect to `{target}`
     "RUF200",  # Failed to parse pyproject.toml: {message}
     # flake8-bandit ('S')

doc/conf.py

@@ -179,7 +179,7 @@ nitpick_ignore = {
     (
         'cpp:class',
         'template<typename TOuter> template<typename TInner> Wrapper::Outer<TOuter>::Inner',
-    ),  # NoQA: E501
+    ),
     ('cpp:identifier', 'MyContainer'),
     ('js:func', 'SomeError'),
     ('js:func', 'number'),
@@ -312,7 +312,7 @@ REDIRECT_TEMPLATE = """
         <a href="{{rel_url}}">If not, click here to continue.</a>
     </body>
 </html>
-"""  # noqa: E501
+"""  # NoQA: E501
 
 
 def build_redirects(app: Sphinx, exception: Exception | None) -> None:

sphinx/_cli/__init__.py

@@ -168,11 +168,8 @@ class _RootArgumentParser(argparse.ArgumentParser):
         raise ValueError(msg)
 
     def error(self, message: str) -> NoReturn:
-        sys.stderr.write(
+        msg = __("{0}: error: {1}\nRun '{0} --help' for information")
-            __(
+        sys.stderr.write(msg.format(self.prog, message))
-                "{0}: error: {1}\nRun '{0} --help' for information"  # NoQA: COM812
-            ).format(self.prog, message)
-        )
         raise SystemExit(2)
 
 

sphinx/builders/latex/__init__.py

@@ -9,7 +9,7 @@ from typing import TYPE_CHECKING, Any
 
 from docutils.frontend import OptionParser
 
-import sphinx.builders.latex.nodes  # NoQA: F401,E501  # Workaround: import this before writer to avoid ImportError
+import sphinx.builders.latex.nodes  # NoQA: F401  # Workaround: import this before writer to avoid ImportError
 from sphinx import addnodes, highlighting, package_dir
 from sphinx.builders import Builder
 from sphinx.builders.latex.constants import (

sphinx/builders/linkcheck.py

@@ -545,7 +545,7 @@ class HyperlinkAvailabilityCheckWorker(Thread):
                 status_code = response.status_code
                 redirect_status_code = (
                     response.history[-1].status_code if response.history else None
-                )  # NoQA: E501
+                )
                 retry_after = response.headers.get('Retry-After', '')
                 response_url = f'{response.url}'
                 response.raise_for_status()

sphinx/cmd/quickstart.py

@@ -273,7 +273,7 @@ def ask_user(d: dict[str, Any]) -> None:
                 'for custom HTML templates and "_static" for custom stylesheets and other static\n'  # NoQA: E501
                 'files. You can enter another prefix (such as ".") to replace the underscore.'
             )
-        )  # NoQA: E501
+        )
         d['dot'] = do_prompt(__('Name prefix for templates and static dir'), '_', ok)
 
     if 'project' not in d:

sphinx/domains/c/__init__.py

@@ -762,7 +762,7 @@ class CDomain(Domain):
         # generated object types
         'functionParam': ObjType(
             _('function parameter'), 'identifier', 'var', 'member', 'data'
-        ),  # NoQA: E501
+        ),
     }
 
     directives = {

sphinx/domains/c/_ast.py

@@ -25,7 +25,7 @@ if TYPE_CHECKING:
     from sphinx.environment import BuildEnvironment
     from sphinx.util.cfamily import StringifyTransform
 
-DeclarationType: TypeAlias = Union[  # NoQA: UP007
+DeclarationType: TypeAlias = Union[
     'ASTStruct',
     'ASTUnion',
     'ASTEnum',

sphinx/domains/c/_parser.py

@@ -933,7 +933,7 @@ class DefinitionParser(BaseParser):
                         header = 'Type must be either just a name or a '
                         header += 'typedef-like declaration.'
                         raise self._make_multi_error(prev_errors, header) from ex_typed
-                    else:  # NoQA: RET506
+                    else:
                         # For testing purposes.
                         # do it again to get the proper traceback (how do you
                         # reliably save a traceback when an exception is

sphinx/domains/cpp/__init__.py

@@ -947,7 +947,7 @@ class CPPDomain(Domain):
         # generated object types
         'functionParam': ObjType(
             _('function parameter'), 'identifier', 'member', 'var'
-        ),  # NoQA: E501
+        ),
         'templateParam': ObjType(
             _('template parameter'),
             'identifier',
@@ -957,7 +957,7 @@ class CPPDomain(Domain):
             'member',
             'var',
             'type',
-        ),  # NoQA: E501
+        ),
     }
 
     directives = {

sphinx/domains/cpp/_parser.py

@@ -1685,7 +1685,7 @@ class DefinitionParser(BaseParser):
                         else:
                             raise AssertionError from ex_untyped
                         raise self._make_multi_error(prev_errors, header) from ex_typed
-                    else:  # NoQA: RET506
+                    else:
                         # For testing purposes.
                         # do it again to get the proper traceback (how do you
                         # reliably save a traceback when an exception is

sphinx/domains/python/__init__.py

@@ -80,7 +80,7 @@ class ModuleEntry(NamedTuple):
 class PyFunction(PyObject):
     """Description of a function."""
 
-    option_spec: ClassVar[OptionSpec] = PyObject.option_spec.copy()  # noqa: F821
+    option_spec: ClassVar[OptionSpec] = PyObject.option_spec.copy()
     option_spec.update({
         'async': directives.flag,
     })

sphinx/environment/collectors/toctree.py

@@ -219,7 +219,7 @@ class TocTreeCollector(EnvironmentCollector):
                     _walk_toc(subnode, secnums, depth - 1, titlenode)
                     numstack.pop()
                     titlenode = None
-                elif isinstance(subnode, nodes.list_item):  # NoQA: SIM114
+                elif isinstance(subnode, nodes.list_item):
                     _walk_toc(subnode, secnums, depth, titlenode)
                     titlenode = None
                 elif isinstance(subnode, addnodes.only):

sphinx/ext/doctest.py

@@ -326,7 +326,7 @@ class DocTestBuilder(Builder):
         date = time.strftime('%Y-%m-%d %H:%M:%S')
 
         outpath = self.outdir.joinpath('output.txt')
-        self.outfile = outpath.open('w', encoding='utf-8')  # NoQA: SIM115
+        self.outfile = outpath.open('w', encoding='utf-8')
         line = '=' * len(date)
         self.outfile.write(
             f'Results of doctest builder run on {date}\n'

sphinx/ext/napoleon/__init__.py

@@ -265,7 +265,7 @@ class Config:
         Use the type annotations of class attributes that are documented in the docstring
         but do not have a type in the docstring.
 
-    """  # NoQA: D301
+    """
 
     _config_values: dict[str, tuple[Any, _ConfigRebuild]] = {
         'napoleon_google_docstring': (True, 'env'),

sphinx/ext/napoleon/docstring.py

@@ -558,7 +558,7 @@ class GoogleDocstring:
         return [(' ' * n) + line for line in lines]
 
     def _is_indented(self, line: str, indent: int = 1) -> bool:
-        for i, s in enumerate(line):  # NoQA: SIM110
+        for i, s in enumerate(line):
             if i >= indent:
                 return True
             elif not s.isspace():

sphinx/highlighting.py

@@ -32,7 +32,7 @@ if TYPE_CHECKING:
     from pygments.style import Style
 
 if tuple(map(int, pygments.__version__.split('.')[:2])) < (2, 18):
-    from pygments.formatter import Formatter  # NoQA: F811
+    from pygments.formatter import Formatter
 
     Formatter.__class_getitem__ = classmethod(lambda cls, name: cls)  # type: ignore[attr-defined]
 

sphinx/locale/__init__.py

@@ -207,7 +207,7 @@ def get_translation(catalog: str, namespace: str = 'general') -> Callable[[str],
     def gettext(message: str) -> str:
         if not is_translator_registered(catalog, namespace):
             # not initialized yet
-            return _TranslationProxy(catalog, namespace, message)  # type: ignore[return-value]  # NoQA: E501
+            return _TranslationProxy(catalog, namespace, message)  # type: ignore[return-value]
         else:
             translator = get_translator(catalog, namespace)
             return translator.gettext(message)

sphinx/registry.py

@@ -589,7 +589,7 @@ class SphinxComponentRegistry:
 def merge_source_suffix(app: Sphinx, config: Config) -> None:
     """Merge any user-specified source_suffix with any added by extensions."""
     for suffix, filetype in app.registry.source_suffix.items():
-        if suffix not in app.config.source_suffix:  # NoQA: SIM114
+        if suffix not in app.config.source_suffix:
             app.config.source_suffix[suffix] = filetype
         elif app.config.source_suffix[suffix] == 'restructuredtext':
             # The filetype is not specified (default filetype).

sphinx/testing/fixtures.py

@@ -222,7 +222,7 @@ def _shared_result_cache() -> None:
 
 
 @pytest.fixture
-def if_graphviz_found(app: SphinxTestApp) -> None:  # NoQA: PT004
+def if_graphviz_found(app: SphinxTestApp) -> None:
     """
     The test will be skipped when using 'if_graphviz_found' fixture and graphviz
     dot command is not found.
@@ -246,7 +246,7 @@ def sphinx_test_tempdir(tmp_path_factory: pytest.TempPathFactory) -> Path:
 
 
 @pytest.fixture
-def rollback_sysmodules() -> Iterator[None]:  # NoQA: PT004
+def rollback_sysmodules() -> Iterator[None]:
     """
     Rollback sys.modules to its value before testing to unload modules
     during tests.

sphinx/testing/path.py

@@ -157,7 +157,7 @@ class path(str):  # NoQA: FURB189
         os.utime(self, arg)
 
     def open(self, mode: str = 'r', **kwargs: Any) -> IO[str]:
-        return open(self, mode, **kwargs)  # NoQA: SIM115
+        return open(self, mode, **kwargs)
 
     def write_text(self, text: str, encoding: str = 'utf-8', **kwargs: Any) -> None:
         """

sphinx/util/docutils.py

@@ -29,7 +29,7 @@ report_re = re.compile(
 )
 
 if TYPE_CHECKING:
-    from collections.abc import Callable, Iterator  # NoQA: TC003
+    from collections.abc import Callable, Iterator
     from types import ModuleType, TracebackType
 
     from docutils.frontend import Values
@@ -378,7 +378,7 @@ def switch_source_input(state: State, content: StringList) -> Iterator[None]:
         # replace it by new one
         state_machine: StateMachine[None] = StateMachine([], None)  # type: ignore[arg-type]
         state_machine.input_lines = content
-        state.memo.reporter.get_source_and_line = state_machine.get_source_and_line  # type: ignore[attr-defined]  # NoQA: E501
+        state.memo.reporter.get_source_and_line = state_machine.get_source_and_line  # type: ignore[attr-defined]
 
         yield
     finally:

tests/test_builders/test_build_latex.py

@@ -2136,7 +2136,7 @@ def test_latex_code_role(app):
         r'\PYG{k}{pass}'
     )
     assert (
-        r'Inline \sphinxcode{\sphinxupquote{%'  # NoQA: ISC003
+        r'Inline \sphinxcode{\sphinxupquote{%'
         + '\n'
         + common_content
         + '%\n}} code block'

tests/test_domains/test_domain_c.py

@@ -835,7 +835,7 @@ def test_domain_c_build_intersphinx(tmp_path, app):
 
 .. c:type:: _type
 .. c:function:: void _functionParam(int param)
-"""  # NoQA: F841
+"""
     inv_file = tmp_path / 'inventory'
     inv_file.write_bytes(
         b"""\
@@ -858,7 +858,7 @@ _type c:type 1 index.html#c.$ -
 _union c:union 1 index.html#c.$ -
 _var c:member 1 index.html#c.$ -
 """)
-    )  # NoQA: W291
+    )
     app.config.intersphinx_mapping = {
         'local': ('https://localhost/intersphinx/c/', str(inv_file)),
     }

tests/test_domains/test_domain_cpp.py

@@ -1863,7 +1863,7 @@ def test_domain_cpp_build_intersphinx(tmp_path, app):
 .. cpp:enum-class:: _enumClass
 .. cpp:function:: void _functionParam(int param)
 .. cpp:function:: template<typename TParam> void _templateParam()
-"""  # NoQA: F841
+"""
     inv_file = tmp_path / 'inventory'
     inv_file.write_bytes(
         b"""\
@@ -1893,7 +1893,7 @@ _type cpp:type 1 index.html#_CPPv45$ -
 _union cpp:union 1 index.html#_CPPv46$ -
 _var cpp:member 1 index.html#_CPPv44$ -
 """)
-    )  # NoQA: W291
+    )
     app.config.intersphinx_mapping = {
         'test': ('https://localhost/intersphinx/cpp/', str(inv_file)),
     }

tests/test_extensions/test_ext_napoleon_docstring.py

@@ -2881,7 +2881,7 @@ None py:data 1 none.html -
 list py:class 1 list.html -
 int py:class 1 int.html -
 """)
-    )  # NoQA: W291
+    )
     app.config.intersphinx_mapping = {'python': ('127.0.0.1:5555', str(inv_file))}
     validate_intersphinx_mapping(app, app.config)
     load_mappings(app)

tests/test_util/test_util_inspect.py

@@ -811,7 +811,7 @@ def test_isproperty():
 def test_isgenericalias():
     #: A list of int
     T = List[int]  # NoQA: UP006
-    S = list[Union[str, None]]  # NoQA: UP006, UP007
+    S = list[Union[str, None]]  # NoQA: UP007
 
     C = Callable[[int], None]  # NoQA: UP006  # a generic alias not having a doccomment