Allow markup inside drupal 8 Link function

Always try to use the core functions for linking inside custom formatters or modules. The following snippet allows html inside the link text.

use Drupal\Core\Link;
use Drupal\Core\Url;
use Drupal\Core\Render\Markup;

$linkText = 'My link <br> containing tags';
$linkMarkup = Markup::create($linkText);
$link = Link::fromTextAndUrl($linkMarkup, $url);
$link = $link->toRenderable();