X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Flib%2Fbasics%2Fbool.ma;h=0d790efc54c590f0e5e8b4f47257d5b9ad99ad3f;hb=12d58352dbd62df65d44becc0f69fc5a7b370866;hp=587ab9ed6fde1a22ce752675be2313aaa60df731;hpb=a87c9d012b588c381dc82c53fd0652762a9e50c9;p=helm.git

diff --git a/matita/matita/lib/basics/bool.ma b/matita/matita/lib/basics/bool.ma
index 587ab9ed6..0d790efc5 100644
--- a/matita/matita/lib/basics/bool.ma
+++ b/matita/matita/lib/basics/bool.ma
@@ -97,7 +97,7 @@ definition xorb : bool → bool → bool ≝
 notation > "'if' term 46 e 'then' term 46 t 'else' term 46 f" non associative with precedence 46
  for @{ match $e in bool with [ true ⇒ $t | false ⇒ $f]  }.
 notation < "hvbox('if' \nbsp term 46 e \nbsp break 'then' \nbsp term 46 t \nbsp break 'else' \nbsp term 49 f \nbsp)" non associative with precedence 46
- for @{ match $e with [ true ⇒ $t | false ⇒ $f]  }.
+ for @{ match $e return $T with [ true ⇒ $t | false ⇒ $f]  }.
 
 theorem bool_to_decidable_eq: 
   ∀b1,b2:bool. decidable (b1=b2).