I am trying to figure out what the normative rules are for Non-ASCII characters in URLs in Hugo.

For instance I am using the Academic Theme and I can create a new .md file manually (projects) with the name U̱t-Ma’in noun or U̱t-Ma’

in each case the saltillo U+A78C causes hugo to not compile so it just hangs.

$ hugo new project/U̱t-Ma’

But the following works:

hugo new project/U̱

I’ve read the following but it doesn’t clearly answer my question