Issue 5150: Add rstrip() menu option to IDLE.
diff --git a/Misc/ACKS b/Misc/ACKS
index e6b9469..4813083 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -658,6 +658,7 @@
 Žiga Seilnach
 Fred Sells
 Jiwon Seo
+Roger D, Serwy
 Jerry Seutter
 Denis Severson
 Ian Seyer
diff --git a/Misc/NEWS b/Misc/NEWS
index 12dfbac..7d3a237 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -262,6 +262,9 @@
 - Issue #5311: bdist_msi can now build packages that do not depend on a
   specific Python version.
 
+- Issue #5150: IDLE's format menu now has an option to strip trailing
+  whitespace.
+
 - Issue #5940: distutils.command.build_clib.check_library_list was not doing 
   the right type checkings anymore.