Bug: Passing parameter to filter doesn't work from template variable

[asacarter]

There seems to be a bug when passing a template variable as the second parameter.

Input

{{ item.content | highlight: search.terms }}

Output

<!-- If the search term was "Yellow" -->
<strong class="highlight">Yellow</strong> shirts are the best!

{{ search.terms }} // Yellow
{{ item.content | highlight: search.terms }}  // Fails
{{ item.content | highlight: 'Yellow' }} // Passes

class AdditionalFilter {
	public function highlight ($str, $search_terms = '') {		
		$terms = explode (' ', $search_terms);
		$terms = array_map ('trim', $terms);

		foreach ($terms as $term) {
			$from = array ('<strong class="highlight">' . $term . '</strong>', $term);
			$to = array ($term, '<strong class="highlight">' . $term . '</strong>');
			$str = str_replace ($from, $to, $str);
		}

		return $str;
	}
}

[asacarter]

After a little more testing I noticed that outputting the search terms inside the pagination loop results in no output:

Outputs search terms

{{ search.terms }}
{% paginate search.results by 10 %}
{% endpaginate %}

No output

{% paginate search.results by 10 %}
	{{ search.terms }}
{% endpaginate %}

Reassigning the variable outside of the pagination loop works:

{% assign terms = search.terms %}
{% paginate search.results by 10 %}
	{% for item in search.results %}
		<div class="article">
			<h3 class="title"><a href="{{ item.url }}">{{ item.title }}</a></h3>
			<div class="content rte">{{ item.content | highlight: terms }}</div>
		</div>
	{% endfor %}
{% endpaginate %}