scope oshi_batteryLevel_withZeroPercentFix.

static int #last = -1;

// We assume actual 0% never appear longer than this
static WaitForStableValue<Bool> zeroSince = new(60.0);

static double oshi_batteryLevel_withZeroPercentFix() {
  double dd = oshi_batteryLevel();
  if (isNaN(dd)) ret dd;
  int d = iround(dd);
  zeroSince.set(d == 0);
  if (d == 0 && (last < 0 || last >= 99 || isTrue(zeroSince!)))
    d = 100;
  ret last = d;
}

end scope

Began life as a copy of #1016190