On Thu, Feb 27, 2020 at 11:53 AM Victor Zverovich via Lib <
lib_at_[hidden]> wrote:

> I agree that Hubert's last option is the one we want here.
>
I agree it is a reasonable option; however, it is also not my first choice
as an interpretation of what the current wording says.
Can we have an LWG issue opened for this?


>
> > encoding schemes that support escape sequences or some other form of
> markup should be excluded
>
> Could you give an example of such encoding scheme?
>
> - Victor
>
> On Wed, Feb 26, 2020 at 7:22 AM Tom Honermann <tom_at_[hidden]> wrote:
>
>> On 2/26/20 2:39 AM, Corentin Jabot via Lib wrote:
>>
>>
>>
>> On Wed, 26 Feb 2020 at 02:38, Hubert Tong via SG16 <sg16_at_[hidden]>
>> wrote:
>>
>>> In [format.string.std], the meaning of "Unicode encoding" added by
>>> P1868R2 is unclear. One interpretation of what was meant by "Unicode
>>> encoding" is "UCS encoding scheme" (as defined by ISO/IEC 10646). Another
>>> interpretation is an encoding scheme capable of encoding all UCS code
>>> points that have been assigned to characters. Yet another interpretation is
>>> an encoding scheme capable of encoding all UCS scalar values.
>>>
>>
>> Any encoding scheme capable of encoding any UCS codepoint - where a UCS
>> codepoint is tautologically any value in the UCS codespace (U+0 -
>> U+10FFFF)
>>
>> I'd like Victor to weigh in, but I think Hubert's last interpretation
>> meets minimum requirements. It might be simplified to "any encoding scheme
>> that encodes (only) UCS scalar values" (encoding schemes that support
>> escape sequences or some other form of markup should be excluded).
>>
>> I think the definition/description of "Unicode Character Encoding
>> Schemes" in UTR #17 section 5 (
>> https://www.unicode.org/reports/tr17/#CharacterEncodingScheme) fits what
>> we're after.
>>
>> Tom.
>>
>>
>>
>>> --
>>> SG16 mailing list
>>> SG16_at_[hidden]
>>> https://lists.isocpp.org/mailman/listinfo.cgi/sg16
>>>
>>
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