alert("ä".match(/\u00e4/)) correctly yields "ä" in firefox and opera, but not in safari/ToT. on the other hand, alert("ä".match(/ä/)) works fine across the board. i didn't see this listed as part of bug 4885.
This is highly related to bug 7253 and bug 6257.
geoff's patch from bug 6257 fixes this, so i'm going to mark as dupe. *** This bug has been marked as a duplicate of 6257 ***