Hi.

That's weird. What would a `u' be confused with?

Well, "n", at least with the handwriting of my parents and grandparents, "u" and "n" could be easily confused, and they all use a straight bar to mark the "u". However, my primary school teacher (I am still (loose) friends with her, even over 15 years after I left primary school) used to use a straight bar instead of the umlaut (but you couldn't confuse her "n" and "u").

cu,
sven