Pushed 1.3.12 to trunk.

src/v8natives.js

Index: src/v8natives.js
===================================================================
--- src/v8natives.js	(revision 2947)
+++ src/v8natives.js	(working copy)
@@ -276,6 +276,13 @@
 }
 
 
+function ObjectKeys(obj) {
+  if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
+    throw MakeTypeError('object_keys_non_object', [obj]);
+  return %LocalKeys(obj);
+}
+
+
 %SetCode($Object, function(x) {
   if (%_IsConstructCall()) {
     if (x == null) return this;
@@ -304,6 +311,9 @@
     "__defineSetter__", ObjectDefineSetter,
     "__lookupSetter__", ObjectLookupSetter
   ));
+  InstallFunctions($Object, DONT_ENUM, $Array(
+    "keys", ObjectKeys
+  ));
 }
 
 SetupObject();
@@ -514,7 +524,7 @@
   }
 
   var source = %FunctionGetSourceCode(func);
-  if (!IS_STRING(source)) {
+  if (!IS_STRING(source) || %FunctionIsBuiltin(func)) {
     var name = %FunctionGetName(func);
     if (name) {
       // Mimic what KJS does.
@@ -524,12 +534,6 @@
     }
   }
 
-  // Censor occurrences of internal calls.  We do that for all
-  // functions and don't cache under the assumption that people rarly
-  // convert functions to strings.  Note that we (apparently) can't
-  // use regular expression literals in natives files.
-  var regexp = ORIGINAL_REGEXP("%(\\w+\\()", "gm");
-  if (source.match(regexp)) source = source.replace(regexp, "$1");
   var name = %FunctionGetName(func);
   return 'function ' + name + source;
 }