# HG changeset patch
# User wenzelm
# Date 879430454 -3600
# Node ID 38c91213f26b94233e3cdabb5810d6b42b606e0f
# Parent  3d9e551bc5a6576b1c867cb83e5cc0cf0d2c7b46
fixed record parser;

diff -r 3d9e551bc5a6 -r 38c91213f26b src/HOL/thy_syntax.ML
--- a/src/HOL/thy_syntax.ML	Thu Nov 13 12:43:17 1997 +0100
+++ b/src/HOL/thy_syntax.ML	Thu Nov 13 15:14:14 1997 +0100
@@ -37,7 +37,7 @@
 
 val record_decl =
   (type_args -- name >> (mk_pair o apfst mk_list)) --$$ "="
-    -- optional (typ --$$ "+" >> cat "Some") "None"
+    -- optional (typ --$$ "+" >> (parens o cat "Some")) "None"
     -- repeat1 ((name --$$ "::" -- typ) >> mk_pair)
   >> (fn ((x, y), zs) => cat_lines [x, y, mk_big_list zs]);