site/themes/minimo/layouts/shortcodes/convo.html

<div class='convo'>
  <ol>
    {{ range ( split .Inner "\n" ) }}
      {{ with . }}
      <li>
        {{ range $i, $chunk := ( split . "::" ) }}
          {{ if or $chunk "s" }}
            {{ if eq $i 0 }}
              <div class='person'>
                {{- $chunk | markdownify -}}
              </div>
            {{ else }}
              <div class='sep'>
                {{- print " " ( $.Get "sep" | default ":" ) " " -}}
              </div>
              <div class='text'>
                {{- $chunk | markdownify -}}
              </div>
            {{ end }}
          {{ end }}
        {{ end }}
      </li>
      {{ end }}
    {{ end }}
  </ol>
</div>