mbstring regexp working in 4.2.3?

I've been testing some the regexp functions (two so far) of the mbstring functions in 4.2.3 and they don't work. I've submitted two bug reports but before continuing my testing of more mbstring functions I wanted to ask ... 1- did any of the regexp (split, ereg_match ...) ever work in this library 2- or are they still under development 3- they got borked in the upgrade to 4.2.3 The other mbstring functions seem to work fine but the regexp ones don't ... Jc