Not sure if anything should be done here?

cc @Daraan

Not sure if anything should be done here?

typing_extensions/src/typing_extensions.py

Lines 1337 to 1341 in 4525e9d

	def _could_be_inserted_optional(t):
	"""detects Union[..., None] pattern"""
	# 3.8+ compatible checking before _UnionGenericAlias
	if get_origin(t) is not Union:
	return False

cc @Daraan

3.9 introduced _UnionGenericAlias. The code can now be adjusted to use it directly like this:

 def _could_be_inserted_optional(t): 
     """detects Union[..., None] pattern""" 
-     # 3.8+ compatible checking before _UnionGenericAlias 
-     if get_origin(t) is not Union: 
+     if not isinstance(t, typing._UnionGenericAlias):
         return False