[css3-syntax] Allow WS to be repeated in the URL diagram but not in escape.

Author: SimonSapin

css3-syntax/Diagrams.src.html

@@ -84,18 +84,18 @@ <h2 id=markup>Markup</h2>
 	Choice(0, 'l', 'L'),
 	'(',
 	Choice(1,
-		Optional(NonTerminal('WS')),
+		ZeroOrMore(NonTerminal('WS')),
 		Sequence(
-			Optional(NonTerminal('WS')),
+			ZeroOrMore(NonTerminal('WS')),
 			NonTerminal('STRING'),
-			Optional(NonTerminal('WS'))),
+			ZeroOrMore(NonTerminal('WS'))),
 		Sequence(
-			Optional(NonTerminal('WS')),
+			ZeroOrMore(NonTerminal('WS')),
 			OneOrMore(
 				Choice(0,
 					NonTerminal('not " \' ( ) \\ WS or NPC'),
 					NonTerminal('escape'))),
-			Optional(NonTerminal('WS')))),
+			ZeroOrMore(NonTerminal('WS')))),
 	')'));
 
 add('NUMBER', Diagram(