Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/pages/configuring-a-custom-domain-for-your-github-pages-site/about-custom-domains-and-github-pages#using-an-apex-domain-for-your-github-pages-site

https://docs.github.com/en/pages/configuring-a-custom-domain-for-your-github-pages-site/managing-a-custom-domain-for-your-github-pages-site#configuring-an-apex-domain-and-the-www-subdomain-variant

What part(s) of the article would you like to see updated?

The current articles do not describe what happens when the domain is configured to example.com (www.example.com redirects to example.com).

The current articles say that no redirect is set up for other subdomains, but www.blog.example.com will redirect to blog.example.com if blog.example.com is configured, and blog.example.com will redirect to www.blog.example.com if www.blog.example.com is configured.

It is not possible to configure a domain that starts with www.www., and for a pair of www.<domain> and <domain>, if a repo is already configured for one of them, another repo cannot be configured for the other.

Additional information

No response