Some reading on IRIs and IDNs

It was thus said that the Great Philip Linde once stated:
> On Fri, 11 Dec 2020 18:14:47 -0500
> Sean Conner <sean at conman.org> wrote:
> 
> > I know, because I tried on a few systems I have access to,
> > and they all failed to look up "caf?.mozz.us" (yes, via getaddrinfo() even). 
> > They all worked when I looked up "xn--caf-dma.mozz.us".
> 
> I don't think Stephane means different systems in the sense of
> different computers, but different systems as in different name
> resolution systems. 

  Yes, I understand that, but on the systems I used, all FAILED to resolve
"caf?.mozz.us".  Does that mean the client just gives up and says "domain
not found?" because local configuration doesn't work with UTF-8 domain
names?  That, to me, sounds like what Stephane is advocating for when they
say "no conversion to punycode".  It's wonderful that Stephane's language
du jour will apparently handle it for the user, but are the rest of us out
of luck? [1]  THIS is what I'm asking about.

  -spc

[1]	And a response of "here's a nickel, get yourself a real computer
	language" is NOT a valid resonse.

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