When a window is iconified, an ICCCM style MapRequest doesn't de-iconify
it, whereas I hoped that it would. For example with an xterm and the
xwit program,
xwit -iconify -id $WINDOWID; sleep 2; xwit -pop -id $WINDOWID
The xterm is iconified, but then the -pop does not de-iconify the way I
think it should.