Re: Musings about Usernames in adduser and Debian
On Tue, Dec 03, 2024 at 09:39:03PM +0100, Gioele Barabucci wrote:
> On 03/12/24 17:59, Marc Haber wrote:
> > > in preparation for a PRECIS future, couldn't adduser pass the usernames
> > > through NFC instead of doing no normalization?
> > >
> > > RFC 8264 5.2.4 Normalization Rule states:
> > >
> > > In accordance with [RFC5198], Normalization Form C (NFC) is
> > > RECOMMENDED.
> >
> > that would solve the étienne and étienne issue (where the two characters
> > are just different renderings of the same character), but not the
> > Ohm-against-Omega issue, right?
>
> NFC would solve both of these "problems":
>
> * Both U+00E9 (é) and U+0065, U+0301 are NFC-normalized to U+00E9,
> * Both U+2126 (Ohm sign) and U+0349 (omega) are NFC-normalized to U+0349
> (omega).
Converting Ohm into an Omega is losing intended information, isnt it?
> Thanks for taking the time to delve into this issue,
I have learned many things.
Greetings
Marc
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