# File lib/vmail/imap_client.rb, line 729
    def save_attachments(dir)
      log "save_attachments #{dir}"
      if !@current_mail
        log "missing a current message"
      end
      return unless dir && @current_mail
      attachments = @current_mail.attachments
      `mkdir -p #{dir}`
      saved = attachments.map do |x|
        path = File.join(dir, x.filename)
        log "saving #{path}"
        File.open(path, 'wb') {|f| f.puts x.decoded}
        path
      end
      "saved:\n" + saved.map {|x| "- #{x}"}.join("\n")
    end