Fix variants of deque.extend:  d.extend(d)   d+=d  d.extendleft(d)
diff --git a/Misc/NEWS b/Misc/NEWS
index 0b16414..622ec92 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -33,6 +33,8 @@
 Library
 -------
 
+- Fix variations of extending deques:  d.extend(d)  d.extendleft(d)  d+=d
+
 - Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is 
   generated in Distutils. Patch by Stephen Emslie.