{{ $fig := newScratch }}
{{ if .Get "caption" }}
  {{ $fig.Set "caption" (.Get "caption") }}
{{ else if .Get "alt" }}
  {{ $fig.Set "caption" (.Get "alt") }}
{{ end }}
<figure {{ with .Get "class" }}class="{{.}}"{{ end }}>
  {{ with .Get "link"}}<a href="{{.}}">{{ end }}
    <img src="{{ .Get "src" }}" 
        {{ with $.Scratch.Get "caption" }}alt="{{ . }}"{{ end }}
        {{ with .Get "align" }}align="{{ . }}"{{ end }}
        {{ with .Get "width" }}width="{{ . }}"{{ end }} />
  {{ with .Get "link"}}</a>{{ end }}
  {{ with ($fig.Get "caption") }}
    <figcaption>
      <span class="img--caption">Figure {{ $.Page.Scratch.Get "fig" }}. {{ . }}</span>
    </figcaption>
  {{ end }}
</figure>
{{ .Page.Scratch.Add "fig" 1 }}
{{ $fig.Delete "caption"}}