Merge #21777 from 3.4

diff --cc Misc/NEWS
index aea2df99c716c4a8d7528e633fdd6fe27d5f160c,247a4f3c9f8d51dc259f45c67c6785ea2c188fe4..3e5f01bb89c1a54d440296fdf99ae6af73c8444a
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -794,8 -610,6 +794,12 @@@ C AP
  Documentation
  -------------
  
++- Issue #21777: The binary sequence methods on bytes and bytearray are now
++  documented explicitly, rather than assuming users will be able to derive
++  the expected behaviour from the behaviour of the corresponding str methods.
++
 +- Issue #6916: undocument deprecated asynchat.fifo class.
 +
  - Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make
    it much more comparable to ``Doc/Makefile``.