quot; &quot;?&quot; &quot;%&quot; &quot;;&quot; &quot;.&quot;

[[7]]
[1] &quot;&lt;&quot; &quot;&gt;&quot; &quot;&lt;&quot; &quot;/&quot; &quot;&gt;&quot;

</div></pre>
  </div>
  <div class="span4">
    <!-- <ul>
      <li>rm_non_words</li>
    </ul>
    <ul>
      <li>non-words</li>
    </ul> -->
      
    <h2>See also</h2>
    
<code><a href='http://www.inside-r.org/r-doc/base/grep'>gsub</a></code>,
<code><a href='http://www.inside-r.org/packages/cran/stringi/docs/stri_extract'>stri_extract_all_regex</a