Bug#4298: arrow keys in dselect don't work after search

[Ian Jackson <ian@chiark.chu.cam.ac.uk>]

Joey Hess writes ("Bug#4298: arrow keys in dselect don't work after search"):
...
> I'm running dselect in an xterm. I go to the "[S]elect" part of it, and
> the up and down addor keys scroll through the list of packages. But when I
> type "/mosaic\n", to search for mosaic, the arrow keys stop working.
> ctrl-p and ctrl-n still work, as do pageup and pagedown and all the other
> keys, except for the up and down arrows.

This is a four-month-old bug in ncurses, which has previously been
reported as #2962 and #3974.  I'm reassigning it to ncurses3.0 and
merging it with those others.

Ian.