{{- /* Turns a repo path ("/static/images/x.webp") into a CDN URL on site.Params.cdn_domain,
       or into the site's own copy when there's no CDN (development) or the CDN won't serve it.
       cdn-fallback.html retries anything that fails on the CDN from the site's own copy. */ -}}
{{- $path := . -}}
{{- $domain := site.Params.cdn_domain -}}
{{- $local := $path | replaceRE "^/static/" "/" -}}
{{- /* cdn.jsdmirror.cn (used for zh) only mirrors some file types from GitHub; js, css, jpg and ico 404 */ -}}
{{- $ext := path.Ext $path -}}
{{- $mirrorRefuses := and (eq $domain "cdn.jsdmirror.cn") $ext (not (in (slice ".webp" ".mp4" ".pdf") $ext)) -}}
{{- if or (not $domain) $mirrorRefuses -}}
  {{- $local -}}
{{- else -}}
  {{- /* The stylesheet is published to static/css by `make deploy` */ -}}
  {{- if strings.HasPrefix $path "/css/" -}}
    {{- $path = printf "/static%s" $path -}}
  {{- end -}}
  {{- printf "https://%s/gh/Brinsleym/website@master%s" $domain $path -}}
{{- end -}}