Issue with self.

[DakJaniels]

I've noticed that 'self' is sometimes not parsed correctly. Here is a section of code where 'self' is a parameter; it should trigger the colon in chatSystem.textEntry:AddCommandHistory(text), correct?

do
    local parts = {};
    local chatSystem = CHAT_SYSTEM;
    local originalAddCommandHistory = chatSystem.textEntry.AddCommandHistory;
    function chatSystem.textEntry:AddCommandHistory(text)
        -- Don't add the switch when chat is restored
        if db.addChannelAndTargetToHistory and pChatData.isAddonInitialized then
            local currentChannel = chatSystem.currentChannel;
            local currentTarget = chatSystem.currentTarget;
            local switch = chatSystem.switchLookup[currentChannel];
            if switch ~= nil then
                parts[1] = switch;
                if currentTarget then
                    parts[2] = currentTarget;
                    parts[3] = text;
                else
                    parts[2] = text;
                    parts[3] = nil;
                end;
                text = table.concat(parts, ' ');
            end;
        end;

        originalAddCommandHistory(self, text);
    end;
end;

[CppCXY]

I'm not quite sure what the issue is, but it's likely related to my previous restrictions. I'm currently rewriting the language server, so let's discuss any issues after I finish.