How to suppress CHAT WHISPERS? Like CTRA does?

[Jakobud]

Hey guys, I'm taking a look at the code for CTRaidAssist. Specifically I'm looking at the auto-invite functionality. It's where someone whispers the raid leader a keyword like this:

/w jakobud invite

and then the raid leader automatically sees the keyword and invites them.

However, if you are the raid leader and someone whispers the auto-invite keyword to you, you do NOT see the whisper. All you see is some text in your chat field from CTRA that says "Auto-inviting whoever to the raid" or something similar. You never see the actual whisper from the person in chat.

I'm looking at the code for CTRA and I don't understand how they are suppressing that chat whisper from actually being displayed in the raid leaders chat window. Any thoughts?

[Gello]

local oldChatFrame_OnEvent = ChatFrame_OnEvent
function ChatFrame_OnEvent(event)
if event~="CHAT_MSG_WHISPER" or arg1~="invite" then
oldChatFrame_OnEvent(event)
end
end

will let everything except CHAT_MSG_WHISPERs of "invite" through.