Hide TOC if only one heading available

support
3

Adding to the code from your previous related topic, replace .Content in your template with:

{{ if gt ((findRE `(?i)<h2` .Content) | len) 1 }}
  {{ replaceRE `(?s)(.*?)(<h2.*)` (print "$1" .TableOfContents "$2")  .Content | safeHTML }}
{{ else }}
  {{ .Content }}
{{ end }}

Example:

git clone --single-branch -b hugo-forum-topic-42666 https://github.com/jmooring/hugo-testing hugo-forum-topic-42666
cd hugo-forum-topic-42666
hugo server