--- a/analyzer/extensions.st	Sat Oct 04 21:26:15 2014 +0100
+++ b/analyzer/extensions.st	Sun Oct 05 00:29:07 2014 +0100
@@ -41,7 +41,7 @@
 	copies := OrderedCollection new.
 	parsers do: [ :each |
 		| result |
-		result := each 
+		result := each
 			copyInContext: aDictionary
 			seen: aSeenDictionary.
 		result isCollection
@@ -70,7 +70,7 @@
 !PPNotParser methodsFor:'*petitanalyzer-private'!
 
 firstSets: aFirstDictionary into: aSet
-	
+
 ! !
 
 !PPNotParser methodsFor:'*petitanalyzer-testing'!
@@ -101,7 +101,7 @@
 allNamedParsersDo: aBlock
 	"Iterate over all the named parse nodes of the receiver."
 
-	self allParsersDo: [ :each | 
+	self allParsersDo: [ :each |
 		each name notNil
 			ifTrue: [ aBlock value: each ] ]
 ! !
@@ -116,8 +116,8 @@
 
 copyInContext: aDictionary seen: aSeenDictionary
 	| copy |
-	aSeenDictionary 
-		at: self 
+	aSeenDictionary
+		at: self
 		ifPresent: [ :value | ^ value ].
 	copy := aSeenDictionary
 		at: self
@@ -133,7 +133,7 @@
 
 cycleSet
 	"Answer a set of all nodes that are within one or more cycles of left-recursion. This is generally not a problem if at least one of the nodes is memoized, but it might make the grammar very inefficient and should be avoided if possible."
-	
+
 	| cycles |
 	cycles := IdentitySet new.
 	self cycleSet: OrderedCollection new firstSets: self firstSets into: cycles.
@@ -155,7 +155,7 @@
 
 	| index |
 	self isTerminal
-		ifTrue: [ ^ self ].	
+		ifTrue: [ ^ self ].
 	(index := aStack indexOf: self) > 0
 		ifTrue: [ ^ aSet addAll: (aStack copyFrom: index to: aStack size) ].
 	aStack addLast: self.
@@ -168,7 +168,7 @@
 
 firstSet
 	"Answer the first-set of the receiver. Note, this implementation is inefficient when called on different receivers of the same grammar, instead use #firstSets to calculate the first-sets at once."
-	
+
 	^ self firstSets at: self
 ! !
 
@@ -176,7 +176,7 @@
 
 firstSets
 	"Answer a dictionary with all the parsers reachable from the receiver as key and their first-set as value. The first-set of a parser is the list of terminal parsers that begin the parser derivable from that parser."
-	
+
 	| firstSets |
 	firstSets := IdentityDictionary new.
 	self allParsersDo: [ :each |
@@ -215,7 +215,7 @@
 
 followSets
 	"Answer a dictionary with all the parsers reachable from the receiver as key and their follow-set as value. The follow-set of a parser is the list of terminal parsers that can appear immediately to the right of that parser."
-	
+
 	| current previous continue firstSets followSets |
 	current := previous := 0.
 	firstSets := self firstSets.
@@ -223,7 +223,7 @@
 	self allParsersDo: [ :each | followSets at: each put: IdentitySet new ].
 	(followSets at: self) add: PPSentinel instance.
 	[	followSets keysAndValuesDo: [ :parser :follow |
-			parser 
+			parser
 				followSets: followSets
 				firstSets: firstSets
 				into: follow ].
@@ -240,7 +240,7 @@
 
 followSets: aFollowDictionary firstSets: aFirstDictionary into: aSet
 	"PRIVATE: Try to add additional elements to the follow-set aSet of the receiver, use the incomplete aFollowDictionary and the complete aFirstDictionary."
-	
+
 	self children do: [ :parser | (aFollowDictionary at: parser) addAll: aSet ]
 ! !
 
@@ -267,7 +267,7 @@
 
 innerChildrenDo: aBlock seen: aSet
 	"Iterate over the inner children of the receiver."
-	
+
 	self children do: [ :each |
 		(aSet includes: each)
 			ifTrue: [ ^ self ].
@@ -289,7 +289,7 @@
 
 isNullable
 	"Answer true if the receiver is a nullable parser, e.g. it can successfully parse nothing."
-	
+
 	^ false
 ! !
 
@@ -335,9 +335,9 @@
 		currentIndex := parserIndex - 1.
 		[ currentDictionary := aDictionary copy.
 		currentSeen := aSet copy.
-		parserList size < currentIndex or: [ 
+		parserList size < currentIndex or: [
 			parsers := parserList copyFrom: parserIndex to: currentIndex.
-			(currentDictionary at: parser ifAbsentPut: [ parsers ]) = parsers and: [ 
+			(currentDictionary at: parser ifAbsentPut: [ parsers ]) = parsers and: [
 				(self
 					matchList: matchList
 					index: matchIndex + 1
@@ -345,7 +345,7 @@
 					index: currentIndex + 1
 					inContext: currentDictionary
 					seen: currentSeen)
-					ifTrue: [ 
+					ifTrue: [
 						currentDictionary keysAndValuesDo: [ :key :value | aDictionary at: key put: value ].
 						^ true ].
 				false ] ] ] whileFalse: [ currentIndex := currentIndex + 1 ].
@@ -386,7 +386,7 @@
 
 namedChildrenDo: aBlock seen: aSet
 	"Iterate over the named children of the receiver."
-	
+
 	self children do: [ :each |
 		(aSet includes: each)
 			ifTrue: [ ^ self ].
@@ -448,7 +448,7 @@
 followSets: aFollowDictionary firstSets: aFirstDictionary into: aSet
 	| firstSet |
 	super followSets: aFollowDictionary firstSets:  aFirstDictionary into: aSet.
-	
+
 	firstSet := aFirstDictionary at: self.
 	self children do: [:p | (aFollowDictionary at: p) addAll: (firstSet reject: [:each | each isNullable]) ]
 ! !
@@ -500,13 +500,13 @@
 		index = parsers size
 			ifTrue: [ followSet addAll: aSet ]
 			ifFalse: [
-				(self class withAll: (parsers 
+				(self class withAll: (parsers
 					copyFrom: index + 1 to: parsers size))
 						firstSets: aFirstDictionary
 						into: (firstSet := IdentitySet new).
 				(firstSet anySatisfy: [ :each | each isNullable ])
 					ifTrue: [ followSet addAll: aSet ].
-				followSet addAll: (firstSet 
+				followSet addAll: (firstSet
 					reject: [ :each | each isNullable ]) ] ]
 ! !