I oppose loading groff down with AI. Recall the angst of \s, where \s30 summoned huge type and \s40 tiny.
I have enough battles with Word and its imitators trying to outguess me*, or with Tex throwing a tantrum about paragraphs that it deems unaesthetic. I am much happier with groff, which in general obediently does what you tell it to. The big exception is hyphenation, and see how much mechanism exists to support that one small feature and how many info screens are needed to describe it. "Semantic newline" warnings are relatively innocuous. The occasional pitch on this mailing list for paragraph awareness is far less so. Bad things happen when "prettiness" overrides predictability and one has to psych out the AI to fix the trouble. Doug * Truth be told, some of the idiocy is fun to complain about. My all-time favorite is Open Office inferring that my name, M. Douglas McIlroy, is the beginning of a numbered paragraph and carrying on to number the following paragraphs MI, MII, MIII, ...
