I have seen this technique (send all the indexed search terms) a few times in the wild. Racket (a scheme derivative specifically made for teaching) has a search

I have seen this technique (send all the indexed search terms) a few times in the wild. Racket (a scheme derivative specifically made for teaching) has a search page where everything public is indexed [1] (see plt-index.js) and it works really well. [1] https://docs.racket-lang.org/search/index.html https://docs.racket-lang.org/search/index.html