This one had been intended for longer than several years, but I
hadn't gotten around to it. When consorting with succubi and
incubi, very high Cha+Int no longer guarantees that a positive
outcome will occur.
Chance of positive outcome is still quite high and most of the
negative outcomes are pretty easy to repair, so this isn't likely
to make a significant impact. However, the possibility of losing
spell power will matter for some players....
projects / nethack / commit