{% macro span_date(value) %}
<span class="{%- match df -%}
    {% when DateFormat::RFC3339 %}
        date-rfc3339
    {% when DateFormat::Strftime(_) %}
{%- endmatch -%}">{{ value|date(df) }}</span>
{% endmacro %}
{% macro table(post) %}
<div class="table">
    {% match post.created_at %}
        {% when Some(created_at) %}
            <div class="created">written</div>
            <div class="created value">{% call span_date(created_at) %}</div>
        {% when None %}
    {% endmatch %}
    {% match post.modified_at %}
        {% when Some(modified_at) %}
            <div class="modified">last modified</div>
            <div class="modified value">{% call span_date(modified_at) %}</div>
        {% when None %}
    {% endmatch %}
    {% if !post.tags.is_empty() %}
        <div class="tags">tags</div>
        <div class="tags value">
        {% for tag in post.tags %}
            <a href="/?tag={{ tag }}" title="view all posts with this tag">{{ tag }}</a>
        {% endfor %}
        </div>
    {% endif %}
</div>
{% endmacro %}