Various miscellaneous improvements (#12578)

sphinx/builders/html/__init__.py

@@ -969,26 +969,24 @@ class StandaloneHTMLBuilder(Builder):
 
         # user sidebar settings
         html_sidebars = self.get_builder_config('sidebars', 'html')
-        for pattern, patsidebars in html_sidebars.items():
+        msg = __('page %s matches two patterns in html_sidebars: %r and %r')
+        for pattern, pat_sidebars in html_sidebars.items():
             if patmatch(pagename, pattern):
-                if matched:
-                    if has_wildcard(pattern):
-                        # warn if both patterns contain wildcards
-                        if has_wildcard(matched):
-                            logger.warning(__('page %s matches two patterns in '
-                                              'html_sidebars: %r and %r'),
-                                           pagename, matched, pattern)
-                        # else the already matched pattern is more specific
-                        # than the present one, because it contains no wildcard
-                        continue
+                if matched and has_wildcard(pattern):
+                    # warn if both patterns contain wildcards
+                    if has_wildcard(matched):
+                        logger.warning(msg, pagename, matched)
+                    # else the already matched pattern is more specific
+                    # than the present one, because it contains no wildcard
+                    continue
                 matched = pattern
-                sidebars = patsidebars
+                sidebars = pat_sidebars
 
         if len(sidebars) == 0:
             # keep defaults
             pass
 
-        ctx['sidebars'] = sidebars
+        ctx['sidebars'] = list(sidebars)
 
     # --------- these are overwritten by the serialization builder
 

sphinx/domains/python/_object.py

@@ -89,6 +89,10 @@ class PyXrefMixin:
 
         return result
 
+    _delimiters_re = re.compile(
+        r'(\s*[\[\]\(\),](?:\s*o[rf]\s)?\s*|\s+o[rf]\s+|\s*\|\s*|\.\.\.)'
+    )
+
     def make_xrefs(
         self,
         rolename: str,
@@ -100,9 +104,7 @@ class PyXrefMixin:
         inliner: Inliner | None = None,
         location: Node | None = None,
     ) -> list[Node]:
-        delims = r'(\s*[\[\]\(\),](?:\s*o[rf]\s)?\s*|\s+o[rf]\s+|\s*\|\s*|\.\.\.)'
-        delims_re = re.compile(delims)
-        sub_targets = re.split(delims, target)
+        sub_targets = self._delimiters_re.split(target)
 
         split_contnode = bool(contnode and contnode.astext() == target)
 
@@ -112,13 +114,13 @@ class PyXrefMixin:
             if split_contnode:
                 contnode = nodes.Text(sub_target)
 
-            if in_literal or delims_re.match(sub_target):
+            if in_literal or self._delimiters_re.match(sub_target):
                 results.append(contnode or innernode(sub_target, sub_target))  # type: ignore[call-arg]
             else:
                 results.append(self.make_xref(rolename, domain, sub_target,
                                               innernode, contnode, env, inliner, location))
 
-            if sub_target in ('Literal', 'typing.Literal', '~typing.Literal'):
+            if sub_target in {'Literal', 'typing.Literal', '~typing.Literal'}:
                 in_literal = True
 
         return results

sphinx/transforms/__init__.py

@@ -22,8 +22,10 @@ from sphinx.util.nodes import apply_source_workaround, is_smartquotable
 
 if TYPE_CHECKING:
     from collections.abc import Iterator
+    from typing import Literal
 
     from docutils.nodes import Node, Text
+    from typing_extensions import TypeAlias, TypeIs
 
     from sphinx.application import Sphinx
     from sphinx.config import Config
@@ -31,15 +33,22 @@ if TYPE_CHECKING:
     from sphinx.environment import BuildEnvironment
     from sphinx.util.typing import ExtensionMetadata
 
+    _DEFAULT_SUBSTITUTION_NAMES: TypeAlias = Literal[
+        'version',
+        'release',
+        'today',
+        'translation progress',
+    ]
+
 
 logger = logging.getLogger(__name__)
 
-default_substitutions = {
+_DEFAULT_SUBSTITUTIONS = frozenset({
     'version',
     'release',
     'today',
     'translation progress',
-}
+})
 
 
 class SphinxTransform(Transform):
@@ -105,20 +114,25 @@ class DefaultSubstitutions(SphinxTransform):
 
     def apply(self, **kwargs: Any) -> None:
         # only handle those not otherwise defined in the document
-        to_handle = default_substitutions - set(self.document.substitution_defs)
+        to_handle = _DEFAULT_SUBSTITUTIONS - set(self.document.substitution_defs)
         for ref in self.document.findall(nodes.substitution_reference):
-            refname = ref['refname']
-            if refname in to_handle:
-                if refname == 'translation progress':
-                    # special handling: calculate translation progress
-                    text = _calculate_translation_progress(self.document)
-                else:
-                    text = self.config[refname]
-                if refname == 'today' and not text:
-                    # special handling: can also specify a strftime format
-                    text = format_date(self.config.today_fmt or _('%b %d, %Y'),
-                                       language=self.config.language)
-                ref.replace_self(nodes.Text(text))
+            if (name := ref['refname']) in to_handle:
+                ref.replace_self(self._handle_default_substitution(name))
+
+    def _handle_default_substitution(self, name: _DEFAULT_SUBSTITUTION_NAMES) -> nodes.Text:
+        if name == 'translation progress':
+            # special handling: calculate translation progress
+            return nodes.Text(_calculate_translation_progress(self.document))
+        if name == 'today':
+            if text := self.config.today:
+                return nodes.Text(text)
+            # special handling: can also specify a strftime format
+            return nodes.Text(format_date(
+                self.config.today_fmt or _('%b %d, %Y'),
+                language=self.config.language,
+            ))
+        # config.version and config.release
+        return nodes.Text(getattr(self.config, name))
 
 
 def _calculate_translation_progress(document: nodes.document) -> str:
@@ -263,15 +277,15 @@ class ExtraTranslatableNodes(SphinxTransform):
     default_priority = 10
 
     def apply(self, **kwargs: Any) -> None:
-        targets = self.config.gettext_additional_targets
-        target_nodes = [v for k, v in TRANSLATABLE_NODES.items() if k in targets]
+        targets = frozenset(self.config.gettext_additional_targets)
+        target_nodes = tuple(v for k, v in TRANSLATABLE_NODES.items() if k in targets)
         if not target_nodes:
             return
 
-        def is_translatable_node(node: Node) -> bool:
-            return isinstance(node, tuple(target_nodes))
+        def is_translatable_node(node: Node) -> TypeIs[nodes.Element]:
+            return isinstance(node, target_nodes)
 
-        for node in self.document.findall(is_translatable_node):  # type: nodes.Element
+        for node in self.document.findall(is_translatable_node):
             node['translatable'] = True