Forwarded to the contact form from a github "issue": in some
circumtances clairvoyance lets you move the cursor around to examine
the revealed map, and when doing so starts with "for instructions
type '?'". When extended clairvoyance periodically kicks in, as
opposed to explicitly casting the spell, there wasn't sufficient
context to figure out what it was prompting for (unless you actually
answer '?' to get instructions). Depending upon the most recent
message, it could seem like quite a strange prompt. Explicitly give
a clairvoyance-specific message prior to that.
Also, the getpos() help was including suggestions for targetting
monsters that aren't appropriate when it's being used for detection.
do_name.c has had quite a bit of formatting rot slip in since 3.6.0.
This fixes up the stuff I spotted by manual inspection.