kohana/core — comment on commit 9ef1896fa04e1f94d2bea9def35cf5584fb8d6c6
File: classes/Kohana/Core.php line 331
By Yahasana:

Oh, it's a good feature. however the customize class has to keep 100% API compatible as you do.
as I never try to 100% replaced Ko's classes, I miss this kind of feature. thanks