Folks often post links to Rust Playground, e.g.:
But you have to click through to see the code they're talking about. Discourse has a feature called "Onebox" that can inline a rich summary for links. For instance there's a Onebox implemented for Gists:
It looks like the Onebox repo is at GitHub - discourse/onebox: A gem for turning URLs into website previews. Would folks here be interested in having a Onebox that would expand Rust Playground links the same way the gist link above is expanded?