Youon digraphs as a single character?


Was there ever any practice of writing youon digraphs as a single character
(taking up the same amount of space as a monograph), and if not would that be
a good idea?

e.g. ハロｳｨーン or ハロｳｲーン instead of ハロウィーン, where ｳｲ (ｳｨ) would be treated as a
single character.




There is no such rule in the Japanese grammar and I don't think it would be a
good idea. I think it just weird.

