{% for tag in tags %}
<li>
  <button
    hx-post="/select_tag"
    hx-target="previous .tags"
    hx-swap="outerHTML"
    hx-vals='{"selection_end": {{ selection_end }}, "new_tag": {{ tag.value | json | safe }}}'
  >
    {{ tag.name }}
  </button>
</li>
{% endfor %}