Collation sort orders and digraphs

[Sylvia Sotomayor]

Hi,

I found the documentation for adding a new collation to MySQL and it works fine! Except, there doesn't seem to be any instructions on how to treat a digraph as a single letter for sorting purposes. For example, the digraph 'ch' might be sorted after 'cz' as in utf8_spanish2_ci. Is it even possible to add this sort of thing to a custom collation? How would I go about doing this? Is there some documentation somewhere?

Thanks,
-Sylvia