--- a/UIObjectView.st	Mon Feb 25 21:02:03 2002 +0100
+++ b/UIObjectView.st	Tue Feb 26 13:59:45 2002 +0100
@@ -1268,25 +1268,24 @@
     |coll|
 
     selectionHiddenLevel == 0 ifTrue:[
-	self hideSelection.
-	device flush.
+        self hideSelection.
+        device flush.
     ].
     selectionHiddenLevel := selectionHiddenLevel + 1.
 
-    aBlock valueNowOrOnUnwindDo:[
-	selectionHiddenLevel == 1 ifTrue:[
-	    setOfSuperViewsSizeChanged notEmpty ifTrue:[
-		coll := self minSetOfSuperViews:setOfSuperViewsSizeChanged.
-		coll do:[:aView| aView sizeChanged:nil].
-		setOfSuperViewsSizeChanged := IdentitySet new
-	    ].
-	    selectionHiddenLevel := 0.
-	    self selectionDo:[:aView| self showSelected:aView].
-	] ifFalse:[
-	    selectionHiddenLevel := selectionHiddenLevel - 1.
-	]
+    aBlock ensure:[
+        selectionHiddenLevel == 1 ifTrue:[
+            setOfSuperViewsSizeChanged notEmpty ifTrue:[
+                coll := self minSetOfSuperViews:setOfSuperViewsSizeChanged.
+                coll do:[:aView| aView sizeChanged:nil].
+                setOfSuperViewsSizeChanged := IdentitySet new
+            ].
+            selectionHiddenLevel := 0.
+            self selectionDo:[:aView| self showSelected:aView].
+        ] ifFalse:[
+            selectionHiddenLevel := selectionHiddenLevel - 1.
+        ]
     ]
-
 !
 
 withoutSelectionDo:aBlock