{{ printf `<?xml version="1.0" encoding="utf-8"?>` | safeHTML }} {{/* ref: https://validator.w3.org/feed/docs/atom.html */}}
<feed xmlns="http://www.w3.org/2005/Atom"{{ with .Site.Language.Lang }} xml:lang="{{ . }}"{{ end }}>
    <generator uri="https://gohugo.io/" version="{{ hugo.Version }}">Hugo</generator>
    {{- $title := .Site.Title -}}
    {{- with .Title -}}
        {{- if (not (eq . $title)) -}}
            {{- $title = printf `%s on %s` . $title -}}
        {{- end -}}
    {{- end -}}
    {{ printf `<title type="html"><![CDATA[%s]]></title>` $title | safeHTML }}
    {{ with .Site.Params.subtitle }}
        {{ printf `<subtitle type="html"><![CDATA[%s]]></subtitle>` . | safeHTML }}
    {{ end }}
    {{ $output_formats := .OutputFormats }}
    {{ range $output_formats -}}
        {{- $rel := (or (and (eq "atom" (.Name | lower)) "self") "alternate") -}}
        {{ with $output_formats.Get .Name }}
            {{ printf `<link href=%q rel=%q type=%q title=%q />` .Permalink $rel .MediaType.Type .Name | safeHTML }}
        {{- end -}}
    {{- end }}
    <updated>{{ now.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</updated>
    {{ with .Site.Params.GeekblogAuthor -}}
        {{ with index $.Site.Data.authors . }}
        <author>
            <name>{{ .name }}</name>
            {{ with .email }}
                <email>{{ . }}</email>
            {{ end -}}
        </author>
        {{ end }}
    {{- end }}
    <id>{{ .Permalink }}</id>
    {{- $pages := where .RegularPages "Type" "in" .Site.Params.mainSections -}}
    {{- if (eq .Kind "home") -}}
        {{- $pages = where .Site.RegularPages "Type" "in" .Site.Params.mainSections -}}
    {{- end -}}
    {{- range $pages }}
        {{ $page := . }}
        <entry>
            {{ printf `<title type="html"><![CDATA[%s]]></title>` .Title | safeHTML }}
            <link href="{{ .Permalink }}?utm_source=atom_feed" rel="alternate" type="text/html" {{ with .Site.Language.Lang }} hreflang="{{ . }}"{{ end }} />
            <id>{{ .Permalink }}</id>
            {{ with .Params.authors -}}
                {{- range sort . -}}
                    {{ $author := index $.Site.Data.authors . }}
                    <author>
                        <name>{{ $author.name }}</name>
                    </author>
                {{- end -}}
            {{- end }}
            <published>{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</published>
            <updated>{{ .Lastmod.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</updated>
            {{ $desc := .Description | default "" }}
            {{ $description := (cond (eq "" $desc) "" (printf "<blockquote>%s</blockquote>" ($desc | $.Page.RenderString))) }}
            {{ printf `<content type="html"><![CDATA[%s%s]]></content>` $description .Content | safeHTML }}
            {{ with .Site.Taxonomies }}
                {{ range $taxo,$_ := . }} <!-- Defaults taxos: "tags", "categories" -->
                    {{ with $page.Param $taxo }}
                        {{ $taxo_list := . }} <!-- $taxo_list will be the tags/categories list -->
                        {{ with $.Site.GetPage (printf "/%s" $taxo) }}
                            {{ $taxonomy_page := . }}
                            {{ range $taxo_list }} <!-- Below, assuming pretty URLs -->
                                <category scheme="{{ printf "%s%s" $taxonomy_page.Permalink (. | urlize) }}" term="{{ (. | urlize) }}" label="{{ . }}" />
                            {{ end }}
                        {{ end }}
                    {{ end }}
                {{ end }}
            {{ end }}
        </entry>
    {{ end }}
</feed>