title: REGEXP_REPLACE back-reference with function call
body: <p>Can I use some function call on <code>REGEXP_REPLACE</code> back-reference value?</p>
  
  <p>For example I want to call <code>chr()</code> or any other function on back-reference value, but this</p>
  
  <pre><code>SELECT REGEXP_REPLACE('a 98 c 100', '(\d+)', ASCII('\1')) FROM dual;
  </code></pre>
  
  <p>just returns ASCII value of '\':</p>
  
  <blockquote>
    <p>'a 92 c 92'</p>
  </blockquote>
  
  <p>I want that the last parameter (replacement string) to be evaluated first and then to replace string. So result would be:</p>
  
  <blockquote>
    <p>'a b c d'</p>
  </blockquote>