>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3199781. --> Reported by: [yannickoo](https://www.drupal.org/user/531118) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>We want to ensure that empty values get removed whereas values like <code>0</code> should not be discarded (needed for <code>tabindex</code> attribute)</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <ul> <li>Check string length instead of using <code>array_filter</code></li> </ul>