{{- $author := "" -}}

{{- with .Params.author -}}
    {{- if (reflect.IsSlice .) -}}
        {{- $author = delimit . ", " -}}
    {{- else -}}
        {{- $author = . -}}
    {{- end -}}
{{- else -}}
    {{- $author = site.Params.author.name -}}
{{- end -}}

{{- return $author -}}