Hi,
I was playing with IDNs, and found out that if a name is somehow legit [1], it won’t get punycode’d, e.g. λ1.com and δ1.com.
However, single character IDNs aren’t the case: λ.com, for example, is turned into xn--wxa.com, and δ.com to xn--pxa.com, etc.
I wonder if this is necessary.