rem: this.doDelete(); 
add: this.doDelete(tree); 
context: function nsTreeController_cut(tree){    if (this.copy()) {        this.doDelete();        return true;            // copy succeeded, don't care if delete failed    } else        return false;           // copy failed, so did cut}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/38677ffc36feb978e39dfc7c07c8d8d1e1833fb9/nsTreeController.js/buggy/xpfe/global/resources/content/nsTreeController.js