{% load i18n corpus_extras %}
{% spaceless %} {# disable pagination when sorted randomly #}
    <nav class="pagination {% if form.sort.value == 'random' %}disabled{% endif %}">
        {# Translators: Label for "previous page" button in search results #}
        {% translate 'Previous' as previous_page %}
        {% if page_obj.has_previous %}
            <a name="{{ previous_page }}" title="{{ previous_page }}" class="prev" rel="prev" href="?{% querystring_replace page=page_obj.previous_page_number %}">
                {{ previous_page }}
            </a>
        {% else %}
            <span class="disabled prev">
                {{ previous_page }}
            </span>
        {% endif %}

        {% for number in page_obj.paginator.page_range %}

            {# Translators: Title for link to page number in search results #}
            {% blocktranslate asvar page_number_title %}page {{ number }}{% endblocktranslate %}

            {% if number == page_obj.number %}
                {#  always display current page, marked as current page #}
                <a title="{{ page_number_title }}" class="pagelink" aria-current="page" href="?{% querystring_replace page=number %}">{{ number }}</a>

            {% elif page_obj.number <= 2  and number <= 5 %}
                {# for current page 1 or 2, display first 5 #}
                <a title="{{ page_number_title }}" class="pagelink" href="?{% querystring_replace page=number %}">{{ number }}</a>

            {% elif page_obj.number|add:1 >= page_obj.paginator.num_pages and number >= page_obj.paginator.num_pages|add:-4 %}
                {# for current page last or next to last, display last 5 pages #}
                <a title="{{ page_number_title }}" class="pagelink" href="?{% querystring_replace page=number %}">{{ number }}</a>

            {% elif page_obj.number|add:2 >= number and page_obj.number|add:-2 <= number and number <= 100 %}
                {# display the two numbers before and after the current page (up to 100) #}
                <a title="{{ page_number_title }}" class="pagelink" href="?{% querystring_replace page=number %}">{{ number }}</a>

            {% elif page_obj.number|add:1 >= number and page_obj.number|add:-1 <= number and number > 100 %}
                {# display the one numbers before and after the current page (after 100) #}
                <a title="{{ page_number_title }}" class="pagelink" href="?{% querystring_replace page=number %}">{{ number }}</a>

            {% elif forloop.first %}
                {# always display the first page (not current page) #}
                <a title="{{ page_number_title }}" class="pagelink" href="?{% querystring_replace page=number %}">{{ number }}</a>
                {# if there is a gap between 1 and group around current page #}
                {% if page_obj.number > 4 and page_obj.paginator.num_pages > 6 %}
                    <span class="ellipsis">...</span>
                {% endif %}

            {% elif forloop.last %}
                {# always display last page (not current, not around current page) #}
                {# indicate if there is a gap between current and last #}
                {% if page_obj.number|add:3 < number and number > 6 %}
                    <span class="ellipsis">...</span>
                {% endif %}
                <a title="{{ page_number_title }}" class="pagelink" href="?{% querystring_replace page=number %}">{{ number }}</a>
            {% endif%}
        {% endfor %}

        {# Translators: Label for "next page" button in search results #}
        {% translate 'Next' as next_page %}
        {% if page_obj.has_next %}
            <a name="{{ next_page }}" title="{{ next_page }}" class="next" rel="next" href="?{% querystring_replace page=page_obj.next_page_number %}">
                {{ next_page }}
            </a>
        {% else %}
            <span class="disabled next">
                {{ next_page }}
            </span>
        {% endif %}
    </nav>
{% endspaceless %}