[2.0.1] Improve special case handling for <script>

- DirectLex now honors comments with greater than or less than signs in them
- Comments are transformed into script elements, ending comments are scrapped
- Buggy generator code rewritten to be more error-proof
- AttrValidator checks if token has attributes before processing
- Remove invalid documentation from Scripting
- "Commenting" of script elements switched to the more advanced version

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1189 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/GeneratorTest.php

@@ -141,9 +141,31 @@ class HTMLPurifier_GeneratorTest extends HTMLPurifier_Harness
                 new HTMLPurifier_Token_Text('alert(3 < 5);'),
                 new HTMLPurifier_Token_End('script')
             ),
-            "<script><!--\nalert(3 < 5);\n// --></script>"
+            "<script><!--//--><![CDATA[//><!--\nalert(3 < 5);\n//--><!]]></script>"
         );
         
+        // if missing close tag, don't do anything
+        $this->assertGeneration(
+            array(
+                new HTMLPurifier_Token_Start('script'),
+                new HTMLPurifier_Token_Text('alert(3 < 5);'),
+            ),
+            "<script>alert(3 &lt; 5);"
+        );
+        
+        // if two script blocks, don't do anything
+        $this->assertGeneration(
+            array(
+                new HTMLPurifier_Token_Start('script'),
+                new HTMLPurifier_Token_Text('alert(3 < 5);'),
+                new HTMLPurifier_Token_Text('foo();'),
+                new HTMLPurifier_Token_End('script')
+            ),
+            "<script>alert(3 &lt; 5);foo();</script>"
+        );
+        
+        
+        
         $this->config = HTMLPurifier_Config::createDefault();
         $this->config->set('Core', 'CommentScriptContents', false);