/**
 * Implements hook_transliteration_overrides_alter().
 */
function {{ machine_name }}_transliteration_overrides_alter(&$overrides, $langcode) {
  // Provide special overrides for German for a custom site.
  if ($langcode == 'de') {
    // The core-provided transliteration of Ä is Ae, but we want just A.
    $overrides[0xC4] = 'A';
  }
}