Can someone help with simple conditional class on <li>?

Hi folks,

I’ve had specific categories in a sidebar using the code below and WP would automatically insert the class “current-cat” so it was easy to style the current li.

I’ve mixed in tags now but the current-cat does not get inserted for tags. I’ve searched but can’t find an answer.

<li class="cat-group">Blah Blah</li>
	<ul class="cat-list">
	<?php wp_list_categories('include=10,20,30,40&orderby=order&show_count=1&title_li='); ?>

The code snippet below works fine – with the exception of no current class. I’ve tried creating my own conditional statement that would insert a class if the tag was the current one – but all my attempts failed. Can someone help or point me in the right direction? Thank you.

<li class="cat-group">Blah Blah
	<ul class="cat-list">
		<?php
		$tags = get_tags(array(
		'orderby' => 'order',
		'order' => 'ASC',
		'include' => '10,20,30,40'
		) );
		foreach ($tags as $tag) {
		echo '
</li>
<li><a>term_id) . '" rel="tag">' . $tag->name . '</a> (' . $tag->count . ')</li>
';
		} ?>