Comment 7 for bug 1742378

@Julian I had considered that. This could be more easily done with "on_ac_power || return 1" - there is no need for full "if...then...fi".

But both those solutions would have different semantics than what the script _apparently_ intends to do: on_ac_power returns 0 on AC, 1 on battery and 255 if the power status cannot be determined. The current code of the script indicates that in this case /usr/lib/apt/apt.systemd.daily should be executed and _only_ be omitted if on_ac_power returns exactly 1.