pt">) {</span>
        data <span class="hl opt">=</span> node<span class="hl opt">.</span>data || <span class="hl str">''</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>data<span class="hl opt">.</span>length <span class="hl opt">===</span> <span class="hl num">0</span> || data<span class="hl opt">.</span><span class="hl kwd">search</span><span class="hl opt">(/</span><span class="hl esc">\r</span>|<span class="hl esc">\n</span><span class="hl opt">/