Issue #5219: Prevent event handler cascade in IDLE.
Patch by Roger Serwy.
diff --git a/Misc/NEWS b/Misc/NEWS
index 6ef8376..709d5be 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -20,6 +20,8 @@
 Library
 -------
 
+- Issue #5219: Prevent event handler cascade in IDLE.
+
 - Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under
   Windows when the child process has already exited.