title: Regular Expression for "string not empty"
body: <p>Need some help to write a regex that catches this</p>
  
  <pre><code>/applicant-resume-upload?tfa_3352=ANYCHARACTERS
  </code></pre>
  
  <p>but not this</p>
  
  <pre><code>/applicant-resume-upload?tfa_3352=
  </code></pre>
  
  <p>(blank instead of any characters for the value).</p>