Patch #1093585: raise a ValueError for negative history items in
remove_history and replace_history. Will backport to 2.4.
diff --git a/Misc/NEWS b/Misc/NEWS
index 7d6a9e6..68762a6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -34,6 +34,9 @@
 Extension Modules
 -----------------
 
+- Patch #1093585: raise a ValueError for negative history items in readline.
+  {remove_history,replace_history}
+
 - The spwd module has been added, allowing access to the shadow password
   database.