--- a/compiler/PPCOptionalNode.st	Thu Apr 30 23:43:14 2015 +0200
+++ b/compiler/PPCOptionalNode.st	Sun May 10 06:28:36 2015 +0100
@@ -12,26 +12,26 @@
 !PPCOptionalNode methodsFor:'accessing'!
 
 prefix
-	^ #opt
+    ^ #opt
 ! !
 
 !PPCOptionalNode methodsFor:'analysis'!
 
 acceptsEpsilon
-	^ true
+    ^ true
 !
 
 acceptsEpsilonOpenSet: set
-	^ true
+    ^ true
 !
 
 isNullable
-	^ true
+    ^ true
 ! !
 
 !PPCOptionalNode methodsFor:'visiting'!
 
 accept: visitor
-	^ visitor visitOptionalNode: self
+    ^ visitor visitOptionalNode: self
 ! !