renunciation

Alright, I am just wondering whats Sikhism reaction to Apostasy, because I heard that for Islam that they kill those who leave their faith? I know that Sikhism doesn't do that, but what do they do when someone leaves their faith? Also, I am not leaving Sikhism I am just wondering.

http://religion.info/english/articles/article_127.shtml India: politics of renunciation, traditional and modern - Analysis Religioscope, Switzerland - Dec 11, 2004 ... Thirdly, by nominating Manmohan Singh, a Sikh, as the prime minister, she not only sent a secular message across, but also...