{{- $pid := or (.Get "pid") (.Get "page") -}}
{{- $frag := or (.Get "id") (.Get "anchor") -}}
{{- $this := $.Page -}}
{{- $pages := where .Site.RegularPages "Params.pageid" "eq" $pid -}}
{{- $fragsep := cond (eq $frag "") "" "#" -}}
{{- $inner := .Inner -}}
{{- range $pages -}}
  {{- $url := printf "%s%s%s" .Permalink $fragsep $frag -}}
  {{- $text := or $inner .Title -}}
  {{- $anchor := $text | anchorize -}}
  <a id="{{ $anchor }}"
     href="{{ $url }}">{{ $text | markdownify }}</a>
  {{- .Scratch.Add "backlinks" (slice (dict "anchor" $anchor "page" $this)) -}}
{{- end -}}