bug#33664: 26.1; Document vars and functions in `cursor-sensor.el'

[Drew Adams]

> +1.  The bug can be closed, IMO.

Oh, but one other thing:

We're still saying that it's enough that
the variable be Boolean.  OK - that's true,
and that's perhaps all that matters to
`cursor-sensor.el'.

But what about Isearch's use of it?  There
seems to be a disconnect of sorts, wrt
intention.

Should the variable be documented more in
line with the Isearch use of it: encourage
pushing to a list value instead of just
setting to some other non-nil value?