So your options are literal quotes, "code" formatting like you've done, italics like I've done, or the '>' convention, but that doesn't actually apply formatting. Would be nice if it were added.
And the "code" formatting for quotes is generally a bad choice because people read on a variety of screen sizes, and "code" formatting can screw that up (try reading the quote with a really narrow window).
I couldn't get any of the others work and I lost patience. I really do disline using Markdown variants as they never behave the same and "being surprised" is not really what I want when trying to post a comment.
I don't think there is a way comparable to markdown, since the formatting options are limited: https://news.ycombinator.com/formatdoc
So your options are literal quotes, "code" formatting like you've done, italics like I've done, or the '>' convention, but that doesn't actually apply formatting. Would be nice if it were added.