That's actually a feature I wish existed in e.g. StackOverflow. They actually do know which language code is written in, so they should include a comment before

That's actually a feature I wish existed in e.g. StackOverflow. They actually do know which language code is written in, so they should include a comment before the copied code which links to the question. I do this myself with any snippets I copy from sites, since I always find myself going back to the site at least once.