{#
/**
 * @file
 * Theme override for the search form submit button.
 *
 * Available variables:
 * - attributes: A list of HTML attributes for the input element.
 * - children: Optional additional rendered elements.
 *
 * @see\Drupal\Core\Form\FormPreprocess::preprocessInput()
 */
#}
<button{{ attributes }}>
    <span class="icon--search"></span>
    <span class="visually-hidden">{{ attributes.value }}</span>
</button>
{{ children }}