Today's programming challenge - How's your Range-Fu ?

[Panke via Digitalmars-d]

> That doesn't make sense to me, because the umlauts and the 
> accented e all have Unicode code point assignments.

Yes, but you may have perfectly fine unicode text where the 
combined form is used. Actually there is a normalization form for 
unicode that requires the combined form. To be fully correct 
phobos needs to handle that as well.