Switch to use 1.0+ slugify filter instead

_includes/layouts/post.njk

@@ -6,7 +6,7 @@ templateClass: tmpl-post
 
 <time datetime="{{ page.date | htmlDateString }}">{{ page.date | readableDate }}</time>
 {%- for tag in tags | filterTagList %}
-{%- set tagUrl %}/tags/{{ tag | slug }}/{% endset %}
+{%- set tagUrl %}/tags/{{ tag | slugify }}/{% endset %}
 <a href="{{ tagUrl | url }}" class="post-tag">{{ tag }}</a>
 {%- endfor %}
 

_includes/postslist.njk

@@ -4,7 +4,7 @@
     <a href="{{ post.url | url }}" class="postlist-link">{% if post.data.title %}{{ post.data.title }}{% else %}<code>{{ post.url }}</code>{% endif %}</a>
     <time class="postlist-date" datetime="{{ post.date | htmlDateString }}">{{ post.date | readableDate }}</time>
     {% for tag in post.data.tags | filterTagList %}
-      {% set tagUrl %}/tags/{{ tag | slug }}/{% endset %}
+      {% set tagUrl %}/tags/{{ tag | slugify }}/{% endset %}
       <a href="{{ tagUrl | url }}" class="post-tag">{{ tag }}</a>
     {% endfor %}
   </li>