4 ms·
Try https://addons.mozilla.org/en-US/firefox/addon/warn-before-quit/ https://addons.mozilla.org/en-US/firefox/addon/warn-before-q...
by nsm 10y ago
Try https://addons.mozilla.org/en-US/firefox/addon/warn-before-quit/ https://addons.mozilla.org/en-US/firefox/addon/warn-before-q...