Re: Use IDNA on all network connections

[Eli Zaretskii]

> From: Lars Ingebrigtsen <address@hidden>
> Cc: address@hidden,  address@hidden
> Date: Tue, 29 Dec 2015 17:28:55 +0100
> 
> So they're saying that even if it's otherwise latin, a, say,
> KATAKANA-HIRAGANA DOUBLE HYPHEN still doesn't take it out of the Highly
> Restrictive class?

I think so, yes.

> but zero width characters in domain names?

They are needed to force or prevent character composition, I guess
that's the reason.  Emacs displays them as a thin space, so someone
with sharp enough eyes will be able to notice, I think.