pan><span class="n">eq</span><span class="p">.</span><span class="s1">&#39;&#39;</span><span class="p">)</span><span class="k">then</span>
<span class="k">              write</span><span class="p">(</span><span class="o">*</span><span class="p">,</span><span class="o">*</span><span class="p">)</span><span class="s2">&quot;usage: find pattern.&quot;</span><span class="w"></span>
<span class="w">           </span><span class="n">elseif</span><span class="p">(</span><span class="n">getpat</span><span class="p"