added #1337 from github adityatelange/hugo-PaperMod

i18n/de.yaml

@@ -9,6 +9,9 @@
     one: "1 Minute"
     other: "{{ .Count }} Minuten"
 
+- id: lastmod
+  translation: "Zuletzt Geändert"
+
 - id: words
   translation:
     one : "Wort"

i18n/en.yaml

@@ -9,6 +9,9 @@
     one : "1 min"
     other: "{{ .Count }} min"
 
+- id: lastmod
+  translation: "Last modified"
+
 - id: words
   translation:
     one : "word"

layouts/partials/post_meta.html

@@ -8,6 +8,10 @@
 {{- $scratch.Add "meta" (slice (i18n "read_time" .ReadingTime | default (printf "%d min" .ReadingTime))) }}
 {{- end }}
 
+{{- if and (.Param "Lastmod") (ne (.Param "Lastmod"| time.Format "2023-10-15") (.Date | time.Format "2023-10-15" )) }}
+{{- $scratch.Add "meta" (slice (printf "<span title='%s'>%s: %s</span>" (.Lastmod) (i18n "lastmod") (.Lastmod | time.Format (default "January 2, 2006" site.Params.DateFormat)))) }}
+{{- end }}
+
 {{- if (.Param "ShowWordCount") -}}
 {{- $scratch.Add "meta" (slice (i18n "words" .WordCount | default (printf "%d words" .WordCount))) }}
 {{- end }}