hugo-theme-relearn/layouts/partials/meta.html

    <meta charset="utf-8">
    {{- /* to avoid that user swiping to the left leaves a gap on the right side, we set minimum-scale, even if not advised to */}}
    <meta name="viewport" content="height=device-height, width=device-width, initial-scale=1.0, minimum-scale=1.0">
    {{- if (ne .Site.Params.disableGeneratorVersion true) }}
        {{- $gen := hugo.Generator }}
        {{- $gen = replaceRE "\\s*/>$" ">" $gen }}
    {{ $gen | safeHTML }}
        {{- $ver := partial "version.txt" }}
        {{- $ver := printf "<meta name=\"generator\" content=\"%s %s\">" "Relearn" $ver }}
    {{ $ver | safeHTML }}
    {{- end }}
    {{- $title := partial "title.gotmpl" (dict "page" . "linkTitle" true) }}
    {{- if not (and $title .RelPermalink (or (ne .Site.Params.disableSeoHiddenPages true) (not (partialCached "_relearn/pageIsHiddenSelfOrAncestor.gotmpl" (dict "page" . "to" .Site.Home) .Path .Site.Home.Path) ) ) ) }}
    <meta name="robots" content="noindex, nofollow, noarchive, noimageindex">
    {{- end }}
    {{- $url := "" }}
    {{- $errorlevel := or .Params.link.errorlevel .Site.Params.link.errorlevel }}
    {{- if .Params.menuPageRef }}
        {{- with site.Home.GetPage (.Params.menuPageRef) }}
            {{- $url = partial "permalink.gotmpl" (dict "to" .) }}
        {{- else }}
            {{- if eq $errorlevel "warning" }}
                {{- warnf "%q: menu link '%s' is not a page but linked anyways" .File.Filename .Params.menuPageRef }}
            {{- else if eq $errorlevel "error" }}
                {{- errorf "%q: menu link '%s' is not a page" .File.Filename .Params.menuPageRef }}
            {{- end }}
        {{- end }}
    {{- else if .Params.menuUrl }}
        {{- $url = .Params.menuUrl }}
        {{- $u := urls.Parse $url }}
        {{- if $u.IsAbs }}
            {{- partialCached "_relearn/urlExists.gotmpl" (dict "url" $url "page" . "type" "menu link") $u.String }}
        {{- else }}
            {{- if eq $errorlevel "warning" }}
                {{- warnf "%q: local menu link '%s' was given by 'menuURL'; if it points to a page inside your Hugo site use 'menuPageRef' instead; link created anyways" .File.Filename .Params.menuUrl }}
            {{- else if eq $errorlevel "error" }}
                {{- errorf "%q: local menu link '%s' was given by 'menuURL'; if it points to a page inside your Hugo site use 'menuPageRef' instead" .File.Filename .Params.menuUrl }}
            {{- end }}
        {{- end }}
    {{- end }}
    {{- if $url }}
    <meta http-equiv="refresh" content="0; url={{ $url }}">
    {{- end }}
    <meta name="description" content="{{ with trim (or .Description .Summary | plainify | htmlUnescape) "\n\r\t " }}{{ . }}{{ end }}">
    {{- $authorName := partialCached "_relearn/authorName.gotmpl" . }}
    <meta name="author" content="{{ $authorName }}">
    {{- partial "twitter_cards.html" . }}
    {{- partial "opengraph.html" . }}
    {{- partial "schema.html" . }}