* :mod:`typing`: :class:`~typing.ByteString`, deprecated since Python 3.9,
now causes a :exc:`DeprecationWarning` to be emitted when it is used.
-* :class:`!urllib.parse.Quoter`.
+* :class:`!urllib.parse.Quoter` is deprecated: it was not intended to be a
+ public API.
+ (Contributed by Gregory P. Smith in :gh:`88168`.)
* :mod:`xml.etree.ElementTree`: Testing the truth value of an
:class:`~xml.etree.ElementTree.Element` is deprecated and will raise an
* :class:`!pydoc.ErrorDuringImport`: A tuple value for *exc_info* parameter is
deprecated, use an exception instance.
-* :mod:`re`: bad character in group name.
+* :mod:`re`: More strict rules are now applied for numerical group references
+ and group names in regular expressions. Only sequence of ASCII digits is now
+ accepted as a numerical reference. The group name in bytes patterns and
+ replacement strings can now only contain ASCII letters and digits and
+ underscore.
+ (Contributed by Serhiy Storchaka in :gh:`91760`.)
* :mod:`ssl` options and protocols: