Transfer: Changed transfer program file extension from .tr to .tra to avoid collision with Troff file extension.

transfer/examples/disjpatt.tra

@@ -0,0 +1,24 @@
+data Cat : Type where
+    VarOrWild : Cat
+    Exp : Cat
+    Ident : Cat
+
+data Tree : Cat -> Type where
+    EAbs : Tree VarOrWild -> Tree Exp -> Tree Exp
+    EPi : Tree VarOrWild -> Tree Exp -> Tree Exp -> Tree Exp
+    EVar : Tree Ident -> Tree Exp
+    EType : Tree Exp
+    EStr : String -> Tree Exp
+    EInt : Integer -> Tree Exp
+    VVar : Tree Ident -> Tree VarOrWild
+    VWild : Tree VarOrWild
+    Ident : String -> Tree Ident
+
+
+f e = case e of
+       EAbs (VWild || VVar _) e || EPi (VWild || VVar _) _ e -> doSomething e
+       Ident i -> Ident i
+       _ -> catchAll
+
+
+g (Ident x || EAbs (VWild || VVar _) t e) = x e