Incorrect directory order for loading core classes?

[eluser]crikey[/eluser]
@CMCDragonkai: if the file exists it breaks out of the loop, so the second iteration isn't performed.

@InsiteFX: I understand that is one way of doing it, but the User Guide doesn't indicate that... it simply says "To use one of your own system classes instead of a default one simply place your version inside your local application/core directory".

http://ellislab.com/codeigniter/user-gui...asses.html

Maybe the User Guide needs to be a bit clearer then... although it seems more like the intended behaviour is different to the actual behaviour (i.e. a bug).