{{ $page := . }}

{{ $result := slice }}

{{ with $page.Keywords }}
    {{ $result = . }}
{{ end }}

{{ with $page.GetTerms "categories" }}
    {{ range . }}
        {{ $result = $result | append (.Title | markdownify | plainify | htmlUnescape) }}
    {{ end }}
{{ else }}
    {{ $result = $result | append $page.Params.categories }}
{{ end }}

{{ with $page.GetTerms "tags" }}
    {{ range . }}
        {{ $result = $result | append (.Title | markdownify | plainify | htmlUnescape) }}
    {{ end }}
{{ else }}
    {{ $result = $result | append $page.Params.tags }}
{{ end }}

{{ $result = delimit ($result | uniq | sort) ", " }}

{{ return $result }}