hextra/layouts/partials/utils/icon.html

{{- $icon := index .context.Site.Data.icons .name -}}

{{- if not $icon -}}
  {{ errorf "icon %q not found" .name }}
{{- end -}}

{{- $icon = $icon | safeHTML -}}

{{- if .attributes -}}
  {{- $icon = replaceRE "<svg" (printf "<svg %s" .attributes) $icon -}}
{{- end -}}

{{- return ($icon | safeHTML) -}}