Various seduction messages with a verbal component were being given
to hero even when deaf. This uses alternate messages if some cases
and bypasses the message in others. In particular, if hero is deaf
then he or she will not be given the choice to decline removing a
piece of armor--or taking off or putting on a ring of adornment--
that can ordinarily occur (based on die roll against Charisma).
The seduction code was also using '!Blind' to test whether the hero
could see his/her seducer, ignoring the possibility that it might be
invisible. I think the only ramification is that "It" would appear
in messages instead of the "She" or "He" that are explicitly used
when not seen due to blindness.
projects / nethack / commit