How to display a filtered message for everyone?

I've took the ChatManager code from: http://wiki.roblox.com/index.php?title=Custom_chat_GUI

Unfortunately it only displays filtered messages for other players, while the player who sent it doesn't see his own message.

Is there a way to make it so everyone (including the player who sent the message) could view the filtered message in chat?

Remove sender ~= player, and remove its corresponding end. In that if statement, it checks to see if the player's name doesn't match the sender's, but of course that's not what you want.