title: How can I remove all whitespaces and linebreaks in Perl?
body: <p>I have a string that looks like this...</p>
  
  <blockquote>
    <p>"<br>
    <a href="http://www.example.com/" rel="noreferrer">http://www.example.com/</a></p>
    
    <p>example.pdf"</p>
  </blockquote>
  
  <p>I need to remove the whitespaces and linebreaks. How do I do this? My result should be</p>
  
  <p><code>"http://www.example.com/example.pdf"</code></p>