diff -r f5d22f504ab9 -r 7e12ad2f6672 src/HOL/Library/Library.thy
--- a/src/HOL/Library/Library.thy	Wed Jan 26 13:50:59 2005 +0100
+++ b/src/HOL/Library/Library.thy	Wed Jan 26 16:39:44 2005 +0100
@@ -10,6 +10,7 @@
   NatPair
   Nat_Infinity
   Nested_Environment
+  OptionalSugar
   Permutation
   Primes
   Quotient