[Aileen]

Originally Posted by Echo5ive My problem appears to be that the event doesn't pass on any arguments whatsoever.

Are you sure? Try:

function WangFu:CHAT_MSG_COMBAT_FACTION_CHANGE()
	ace:print(arg1)
end

I was working on a faction addon for a little while before SCT got the faction info in it, and this is an example what I used:

function Foo:Enable()
  self:RegisterEvent("CHAT_MSG_COMBAT_FACTION_CHANGE", "FactionChange")
end

function Foo:FactionChange()
  local _, _, faction, change, direction = strfind(arg1, "Your reputation with (.+) has .+. %((%d+) reputation (.+)%")
  if faction then
    self:Msg("You have %s %d reputation with %s.", direction, change, faction)
  end
end

This would look for something like "Your reputation with Timbermaw Hold has increased. (25 reputation gained)" and print out "You have gained 25 reputation with Timbermaw Hold."