Forcing trans_sid on?

This code in session.c looks odd to me: if (!PS(use_cookies) && send_cookie) { PS(apply_trans_sid) = 1; send_cookie = 0; } Basically what this says is that if session.use_cookies is off, trans_sid will be automatically used regardless of the session.use_trans_sid setting. This doesn't make sense to me. If I specially turn off use_cookies and trans_sid in my php.ini file because I want to control things using my own <?=SID?> tags trans_sid getting forced on screws me over because it will add a second PHPSESSION=..... to every link. It won't break my app, since multiply-defining the session id is ok, but it sure makes my urls ugly. What was the logic behind forcing trans_sid on in that case instead of using the current trans_sid setting? -Rasmus