Merge branch '3.4.x' into 3.x

CHANGES

@@ -19,7 +19,7 @@ Bugs fixed
 Testing
 --------
 
-Release 3.4.1 (in development)
+Release 3.4.2 (in development)
 ==============================
 
 Dependencies
@@ -37,16 +37,25 @@ Features added
 Bugs fixed
 ----------
 
+Testing
+--------
+
+Release 3.4.1 (released Dec 25, 2020)
+=====================================
+
+Bugs fixed
+----------
+
 * #8559: autodoc: AttributeError is raised when using forward-reference type
   annotations
 * #8568: autodoc: TypeError is raised on checking slots attribute
 * #8567: autodoc: Instance attributes are incorrectly added to Parent class
+* #8566: autodoc: The ``autodoc-process-docstring`` event is emitted to the
+  alias classes unexpectedly
+* #8583: autodoc: Unnecessary object comparision via ``__eq__`` method
 * #8565: linkcheck: Fix PriorityQueue crash when link tuples are not
   comparable
 
-Testing
---------
-
 Release 3.4.0 (released Dec 20, 2020)
 =====================================
 

sphinx/ext/autodoc/__init__.py

@@ -586,10 +586,12 @@ class Documenter:
     def add_content(self, more_content: Optional[StringList], no_docstring: bool = False
                     ) -> None:
         """Add content from docstrings, attribute documentation and user."""
-        if no_docstring:
-            warnings.warn("The 'no_docstring' argument to %s.add_content() is deprecated."
-                          % self.__class__.__name__,
-                          RemovedInSphinx50Warning, stacklevel=2)
+        # Suspended temporarily (see https://github.com/sphinx-doc/sphinx/pull/8533)
+        #
+        # if no_docstring:
+        #     warnings.warn("The 'no_docstring' argument to %s.add_content() is deprecated."
+        #                   % self.__class__.__name__,
+        #                   RemovedInSphinx50Warning, stacklevel=2)
 
         # set sourcename and add content from attribute documentation
         sourcename = self.get_sourcename()
@@ -1660,8 +1662,9 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
                     ) -> None:
         if self.doc_as_attr:
             more_content = StringList([_('alias of %s') % restify(self.object)], source='')
-
-        super().add_content(more_content)
+            super().add_content(more_content, no_docstring=True)
+        else:
+            super().add_content(more_content)
 
     def document_members(self, all_members: bool = False) -> None:
         if self.doc_as_attr:
@@ -1827,7 +1830,7 @@ class UninitializedGlobalVariableMixin(DataDocumenterMixinBase):
                 return False
 
     def should_suppress_value_header(self) -> bool:
-        return (self.object == UNINITIALIZED_ATTR or
+        return (self.object is UNINITIALIZED_ATTR or
                 super().should_suppress_value_header())
 
     def get_doc(self, encoding: str = None, ignore: int = None) -> List[List[str]]: