if _, err := w.w.WriteRune(w.Comma); err != nil {
				return err
			}
		}

		// If we don't have to have a quoted field then just
		// write out the field and continue to the next field.
		if !w.fieldNeedsQuotes(field) {
			if _, err := w.w.WriteString(field); err != nil {
				return err
			}
			continue
		}

		if err := w.w.WriteByte('"'); err != nil {
			return err
		}
		for len(field) > 0 {