It was decided -- here, long ago and without much discussion -- that Pali (the language) isn't Buddhism and therefore isn't on topic -- though of course the meanings (translations, analysis and so on) of Pali Buddhist texts have always been on-topic.
It's argued in comments under this answer that this prohibition does more harm than good -- is unwelcoming to people who might want Q&A about this topic (i.e. Pali), and who might stay to become members of the community in other topics.
So this proposal is that "Pali", as well as "Buddhist Hybrid Sanskrit", should be taken as on-topic here and not closed.
If you have an opinion which decision would be better for the site, please up-vote yes or no.
If you have more to say on this subject you may also post an answer.