Cleanup of mjsunit.js code and make assertEquals more strict.

test/mjsunit/regexp-capture.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 21 matching lines @@
 assertEquals(["y", undefined], /(x)?y/.exec("y"));
 assertEquals(["y", undefined], "y".match(/(x)?\1y/));
 assertEquals(["y", undefined], "y".match(/(x)?y/));
 assertEquals(["y"], "y".match(/(x)?\1y/g));
 assertEquals(["", undefined, ""], "y".split(/(x)?\1y/));
 assertEquals(["", undefined, ""], "y".split(/(x)?y/));
 assertEquals(0, "y".search(/(x)?\1y/));
 assertEquals("z", "y".replace(/(x)?\1y/, "z"));
 assertEquals("", "y".replace(/(x)?y/, "$1"));
 assertEquals("undefined", "y".replace(/(x)?\1y/,
-    function($0, $1){ 
-        return String($1); 
+    function($0, $1){
+        return String($1);
     }));
-assertEquals("undefined", "y".replace(/(x)?y/, 
-    function($0, $1){ 
-        return String($1); 
+assertEquals("undefined", "y".replace(/(x)?y/,
+    function($0, $1){
+        return String($1);
     }));
-assertEquals("undefined", "y".replace(/(x)?y/, 
-    function($0, $1){ 
-        return $1; 
+assertEquals("undefined", "y".replace(/(x)?y/,
+    function($0, $1){
+        return $1;
     }));
 
 // See https://bugzilla.mozilla.org/show_bug.cgi?id=476146
-assertEquals("bbc,b", /^(b+|a){1,2}?bc/.exec("bbc"));
-assertEquals("bbaa,a,,a", /((\3|b)\2(a)){2,}/.exec("bbaababbabaaaaabbaaaabba"));
+assertEquals(["bbc", "b"], /^(b+|a){1,2}?bc/.exec("bbc"));
+assertEquals(["bbaa", "a", "", "a"],
+             /((\3|b)\2(a)){2,}/.exec("bbaababbabaaaaabbaaaabba"));