jobs -q; echo $status
sleep 5 &
sleep 5 &
jobs -c
jobs -q; echo $status
bg -23 1 2>/dev/null
or echo bg: invalid option -23 >&2
fg 3
bg 3
sleep 1 &
disown
jobs -c
disown foo
disown (jobs -p)
or exit 0

# https://github.com/fish-shell/fish-shell/issues/5824
function foo
    sleep 1 &
	jobs -c
end
foo