text: CREATE OR REPLACE FUNCTION ts2_page_title()
  RETURNS TRIGGER
  LANGUAGE plpgsql AS
  $mw$
  BEGIN
  IF TG_OP = 'INSERT' THEN
    NEW.titlevector = to_tsvector('default',REPLACE(NEW.page_title,'/',' '));
  ELSIF NEW.page_title != OLD.page_title THEN
    NEW.titlevector := to_tsvector('default',REPLACE(NEW.page_title,'/',' '));
  END IF;
  RETURN NEW;
  END;
  $mw$;
  