X wakes the monitor on any key press, so by the time the Del key reaches the backend the monitor is already on and a toggle going by the monitor would switch it straight back off. Only `off` ever enables DPMS, so toggle goes by that instead. on/off now print the state they set, which the backend uses for its blubb's direction. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>