Fix issue 2522.  locale.format now checks that it is passed
exactly one pattern, which avoids mysterious errors where it
had seemed to fail to do localization.
diff --git a/Misc/NEWS b/Misc/NEWS
index 6907c97..d51a360 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -200,6 +200,10 @@
 Library
 -------
 
+- Issue #2522: locale.format now checks its first argument to ensure it has
+  been passed only one pattern, avoiding mysterious errors where it appeared
+  that it was failing to do localization.
+
 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
   Brandl.