Not exactly an appearance, but I definitely give emacs a shout-out in the end notes of my new novel: https://www.amazon.com/dp/B0GYCZJVGX
Amazon! Are you selling an e-book? I couldn't access the site. I wouldn't buy from them anyway as I am sure they require DRM. I don't buy DRM.
That’s funny, I launched a startup novel three days ago [1] where I also referenced emacs in one of the scenes
[1] https://news.ycombinator.com/item?id=48447484