paring against the default and
supplemental (<code>regex_supplement</code>) dictionaries.  This
means that a string such as "@before_" will be returned as
"\\w+?(?= ((%s|%s)\\b))".  If the user wanted to use a regular
expression that was literally "@before_" the <code>escape</code> function classes
the character string and tells the <span class = "pkg">qdapRegex</span> functions not to parse it
(i.e., keep it as a literal string).</p>
  
    </div>
    
    <h2 id="examples">Examples</h2>
    <pre class="ex