rem: rv = prefObj.CopyCharPref (prefName); 
add: rv = prefObj.getCharPref (prefName); 
context: function getCharPref (prefObj, prefName, defaultValue){    var e, rv;        try    {        rv = prefObj.CopyCharPref (prefName);    }    catch (e)    {        rv = defaultValue;    }    //dd ("getCharPref: returning '" + rv + "' for " + prefName);    return rv;    }
meta: 3298	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3298/fb40a907ab670c83ecbab9f81c45c2a56bfecd02/readprefs.js/buggy/xul/content/readprefs.js