Add preProcess and postProcess infrastructure to HTMLModule and HTMLDefinition so that almost all functionality that does not involve merging the modules together can be factored into modules.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@733 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/HTMLModule/Legacy.php

@@ -5,7 +5,9 @@
  * deprecated.
  * 
  * @note Not all legacy elements have been implemented yet, which
- *       is a bit of a reverse problem as compared to browsers!
+ *       is a bit of a reverse problem as compared to browsers! In
+ *       addition, this legacy module may implement a bit more than
+ *       mandated by XHTML 1.1.
  * 
  * This module can be used in combination with TransformToStrict in order
  * to transform as many deprecated elements as possible, but retain

library/HTMLPurifier/HTMLModule/TransformToStrict.php

@@ -27,6 +27,10 @@ class HTMLPurifier_HTMLModule_TransformToStrict extends HTMLPurifier_HTMLModule
         )
     );
     
+    var $info_attr_transform_post = array(
+        'lang' => false // placeholder
+    );
+    
     function HTMLPurifier_HTMLModule_TransformToStrict($config) {
         // deprecated tag transforms
         $this->info_tag_transform['font']   = new HTMLPurifier_TagTransform_Font();

library/HTMLPurifier/HTMLModule/TransformToXHTML11.php

@@ -14,7 +14,15 @@
 class HTMLPurifier_HTMLModule_TransformToXHTML11 extends HTMLPurifier_HTMLModule
 {
     
-    // unimplemented
+    var $attr_collections = array(
+        'Lang' => array(
+            'lang' => false // remove it
+        )
+    );
+    
+    var $info_attr_transform_post = array(
+        'lang' => false // remove it
+    );
     
 }