Yesterday's identical post:
See "Are reposts ok?": <https://news.ycombinator.com/newsfaq.html>
Recent-ish dang comment clarifying further: <https://news.ycombinator.com/item?id=37484775>
If I note prior submissions (often because I'd seen the earlier submission in the "New" queue, I'll specifically note whether or not it's a dupe.