hugo-geekblog/layouts/partials/head/meta.html

<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">

{{ $description := default (default .Site.Title .Site.Params.description) (default .Summary .Description) }}
{{ $keywords := default .Site.Params.Keywords .Keywords }}
{{ $authors := default (slice .Site.Params.GeekblogAuthor) .Params.authors }}

{{ with $description }}
    <meta name="description" content="{{ . }}">
{{ end }}
{{ with $keywords }}
    <meta name="keywords" content="{{ delimit . "," }}">
{{ end }}
{{ with $authors }}
    {{ $list := slice }}
    {{ range sort . }}
        {{ with . }}
            {{ $author := index $.Site.Data.authors . }}
            {{ $list = $list | append $author.name }}
        {{ end }}
    {{ end }}

    {{ with $list }}
    <meta name="author" content="{{ delimit . "," }}">
    {{ end }}
{{ end }}