{{- $username := .Get 0 -}}
{{- $username_url := $username | urlize -}}
{{- $taxonomy := "authors" -}}
{{- $profile_page := site.GetPage (printf "/%s/%s" $taxonomy $username_url) -}}
{{- $name := $profile_page.Title | default ($username|markdownify) -}}
{{- with $profile_page -}}
  <a href="{{$profile_page.RelPermalink}}">{{$name}}</a>
{{- else -}}
  {{- $name -}}
{{- end -}}