{{- $pid := or (.Get "pid") (.Get "page") -}}
{{- $frag := or (.Get "id") (.Get "anchor") -}}
{{- $this := $.Page -}}
{{- $linkid := or ($this.Scratch.Get "linkid") 1 -}}
{{- $this.Scratch.Set "linkid" (add $linkid 1) -}}
{{- $pages := where .Site.RegularPages "Params.pageid" "eq" $pid -}}
{{- $fragsep := cond (eq $frag "") "" "#" -}}
{{- $btext := or (.Get "btext") (printf "%d" $linkid) -}}
{{- $btitle := .Get "btitle" -}}
{{- $anchor := printf "link-%d" $linkid -}}
{{- $inner := .Inner -}}
{{- range $pages -}}
  {{- $url := printf "%s%s%s" .Permalink $fragsep $frag -}}
  {{- $text := or $inner .Title -}}
  <a id="{{ $anchor }}" 
     href="{{ $url }}">{{ $text | markdownify }}</a>
  {{- .Scratch.Add "backlinks" (slice (dict "anchor" $anchor "page" $this "btext" $btext "btitle" $btitle)) -}}
{{- end -}}