Deactivate Ctrl+U capturers

ctrlU.js

(() => {
	const targets = [window, document, document.documentElement, document.body].filter(Boolean);
	const eventTypes = ['keydown', 'keypress', 'keyup'];

	const backup = [];
	for (const t of targets) {
		backup.push({
			target: t,
			onkeydown: t.onkeydown,
			onkeypress: t.onkeypress,
			onkeyup: t.onkeyup
		});
		t.onkeydown = null;
		t.onkeypress = null;
		t.onkeyup = null;
	}

	if (typeof getEventListeners === 'function') {
		for (const t of targets) {
			const all = getEventListeners(t);
			for (const type of eventTypes) {
				for (const l of (all[type] || [])) {
					try {
						t.removeEventListener(type, l.listener, l.useCapture ?? l.capture ?? false);
					} catch {}
				}
			}
		}
	}

	const guard = e => {
		if (e.ctrlKey && String(e.key).toLowerCase() === 'u') {
			e.stopImmediatePropagation();
		}
	};

	for (const t of targets) {
		for (const type of eventTypes) {
			t.addEventListener(type, guard, true);
		}
	}

	globalThis.__ctrlu_unblock_restore = () => {
		for (const t of targets) {
			for (const type of eventTypes) {
				t.removeEventListener(type, guard, true);
			}
		}
		for (const b of backup) {
			b.target.onkeydown = b.onkeydown;
			b.target.onkeypress = b.onkeypress;
			b.target.onkeyup = b.onkeyup;
		}
		delete globalThis.__ctrlu_unblock_restore;
	};

	console.log('Ctrl+U unblock active; restore with __ctrlu_unblock_restore()');
})();