    # File lib/vmail/imap_client.rb, line 183
        def fetch_row_text(id_set, are_uids=false, is_update=false)
          log "fetch_row_text: #{id_set.inspect}"
          if id_set.is_a?(String)
            id_set = id_set.split(',')
          end
          if id_set.to_a.empty?
            log "- empty set"
            return ""
          end
          new_message_rows = fetch_envelopes(id_set, are_uids, is_update)
          new_message_rows.map {|x| x[:row_text]}.join("\n")
        rescue # Encoding::CompatibilityError (only in 1.9.2)
          log "Error in fetch_row_text:\n#{$!}\n#{$!.backtrace}"
          new_message_rows.map {|x| Iconv.conv('US-ASCII//TRANSLIT//IGNORE', 'UTF-8', x[:row_text])}.join("\n")
        end