rem: if (exceptions.some(function (exid) { return exid.compare(occurrence.recurrenceId) == 0; })) { 
add: calendars = calendars.filter(function(el) { return !el.readOnly; }); 
context:         if (exceptions.some(function (exid) {                                return exid.compare(occurrence.recurrenceId) == 0;                            })) {
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/b8e17ac4944a53b1a7be4f857340a62c7e76bc55/calendar-item-editing.js/buggy/calendar/base/content/calendar-item-editing.js