NAM — Naming FTF: Stringified name ambiguity

Summary: I think we all agree that the following stringified names are syntax errors:

/ab
a//b
ab/

That is to ensure that there is only a single representation of empty
id and kind fields. In other words, the above names are correctly expressed
as:

./ab
a/./b
ab/.

It occurred to me that we have a related problem with empty kind fields.
For example, the following two strings appear to denote the same
name component:

ab.
ab

In other words, the spec isn"t clear whether the trailing dot is permitted.

Original submission intention is for a name to have a single valid stringified representation. Clar