escape = params.get("f." + field + '.' + CSV_ESCAPE);
CSVSharedBufPrinter csvPrinter = csvPrinterMV;
if (sep != null || encapsulator != null || escape != null) {
// create a new strategy + printer if there were any per-field overrides
strat = (CSVStrategy)mvStrategy.clone();
if (sep!=null) {
if (sep.length()!=1) throw new SolrException( SolrException.ErrorCode.BAD_REQUEST,"Invalid mv separator:'"+sep+"'");
strat.setDelimiter(sep.charAt(0));
}
if (encapsulator!=null) {