rem: return this; 
add: return this; 
context: function f() {    return this;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/f5797aeb2410e2259028142b87595fe71f03e531/15.5.4.6-2.js/buggy/js/tests/ecma/String/15.5.4.6-2.js