Re: support for DIN SPEC 91379 encoding

U+0000 is not part of DIN SPEC 91379.

--
Boris

> Am 27.03.2022 um 19:47 schrieb Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>:
>
> On 2022-Mar-27, Ralf Schuchardt wrote:
>
>> where did you read, that this DIN SPEC 91379 norm is incompatible with UTF-8?
>>
>> In the document „String.Latin+ 1.2: eine kommentierte und erweiterte
>> Fassung der DIN SPEC 91379. Inklusive einer umfangreichen Liste häufig
>> gestellter Fragen. Herausgegeben von der Fachgruppe String.Latin“
>> linked here https://www.xoev.de/downloads-2316#StringLatin it is said,
>> that the spec is a strict subset of unicode (E.1.6), and it is also
>> mentioned in E.1.4, that in UTF-8 all unicode characters can be
>> encoded. Therefore UTF-8 can be used to encode all DIN SPEC 91379
>> characters.
>
> So the remaining question is whether DIN SPEC 91379 requires an
> implementation to support character U+0000. If it does, then PostgreSQL
> is not conformant, because that character is the only one in Unicode
> that we don't support. If U+0000 is not required, then PostgreSQL is
> okay.
>
> --
> Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/
>
>