--- a/src/HOL/Product_Type.thy Fri Dec 17 17:08:56 2010 +0100
+++ b/src/HOL/Product_Type.thy Fri Dec 17 17:43:54 2010 +0100
@@ -173,8 +173,7 @@
abstractions.
*}
-nonterminals
- tuple_args patterns
+nonterminal tuple_args and patterns
syntax
"_tuple" :: "'a => tuple_args => 'a * 'b" ("(1'(_,/ _'))")