{{ range first 1 . }}
<span class="tag"><a href="{{ "/tags/" | relURL }}{{ . | urlize }}/">#{{ . }}</a></span>
{{ end }}

{{ if gt (len .) 1 }}
{{ range after 1 . }}
| <span class="tag"><a href="{{ "/tags/" | relURL }}{{ . | urlize }}/">#{{ . }}</a></span>
{{ end }}
{{ end }}