rem: if (match->c != 0 && comp->sequence > match->sequence && icalssutil_is_rescheduled(comp->c,match->c)){
add: attendee = icalclassify_find_attendee(comp->c,user);  if(attendee == 0){ return 0; }  param = icalproperty_get_first_parameter(attendee,ICAL_DELEGATEDFROM_PARAMETER);  if (param != 0){
context: int icalclassify_request_delegate(    struct icalclassify_parts *comp,    struct icalclassify_parts *match,     const char* user){    icalclassify_pre    if (match->c != 0 &&	comp->sequence > match->sequence &&	icalssutil_is_rescheduled(comp->c,match->c)){	rtrn = 1;    }    icalclassify_post}