Gray out (or strike out) nicknames who have left the channel in the chat history

[fabioxgn]

22:16 : : most irc clients give you that ability, but it's really useful knowing that the person who entered and asked a question then left. 22:18 : jessta, good point, but what about just diming (not sure if its written like this) his nickname on the left side of his message? 22:18 : Like, "I'll answer that, oh wait, his nickname is gray so hi isn't here anymore" 22:19 : : perhaps an "if this person has said something in the past hour then I want to know their status" 22:19 : diming seems like a good idea