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Subject: Re: SG16 meeting summary for January 8th, 2020
From: Tom Honermann (tom_at_[hidden])
Date: 2020-01-22 11:24:00


On 1/22/20 11:42 AM, Steve Downey via SG16 wrote:
> It was an error on my part, I couldn't find the stability
> guarantee for XID_Start and Continue. But they are guaranteed stable,
> just not immutable. Immutability is the property that things that are
> not identifiers remain not identifiers.

Ah, ok, thanks.  Ignore my last email then.  I added an editorial
comment to the meeting summary to clarify this.

Tom.

>
> On Wed, Jan 22, 2020 at 10:01 AM Corentin Jabot via SG16
> <sg16_at_[hidden] <mailto:sg16_at_[hidden]>> wrote:
>
>
>
> On Wed, 22 Jan 2020 at 15:47, Tom Honermann <tom_at_[hidden]
> <mailto:tom_at_[hidden]>> wrote:
>
> On 1/22/20 2:56 AM, Corentin Jabot via SG16 wrote:
>> XID_Continue and XID_Start are, in fact, stable
>> https://unicode.org/policies/stability_policy.html
>
> Can you elaborate?  My reading of the stability policy is that
> once a character has the XID_Start or XID_Continue property
> that it always will, but that policy doesn't state that
> (existing or new) characters that don't have those properties
> can't be granted them in the future.
>
>
> Which is the stability we care about (and basically the only one
> Unicode defines).
> Identifiers cannot stop being identifiers, well formed code will
> remain well-formed.
>
> (original reply was in reference to :
> Steve responded that they are derived properties and are not
> guaranteed to be stable, but probably will be in practice.
> )
>
> Tom.
>
>>
>> On Wed, 22 Jan 2020 at 06:23, Tom Honermann via SG16
>> <sg16_at_[hidden] <mailto:sg16_at_[hidden]>> wrote:
>>
>> The summary for the SG16 meeting held January 8th, 2020
>> is now available.  For those that attended, please review
>> and suggest corrections:
>> -
>> https://github.com/sg16-unicode/sg16-meetings#january-8th-2020
>>
>> The next meeting is scheduled for Wednesday, January
>> 22nd, from 3:30-5:00pm EST.  An invitation (from
>> invite_at_[hidden] <mailto:invite_at_[hidden]>) has
>> been sent to the mailing list and prior attendees.  The
>> draft agenda is:
>> - P1885R0: Naming Text Encodings to Demystify Them
>> <https://wg21.link/p1885>
>>   - Follow up on recent mailing list discussions.
>>   - Identify and discuss intended use cases.
>> - P2020R0: Locales, Encodings and Unicode
>> <https://wg21.link/p2020>
>>   - General discussion, corrections, suggestions, etc...
>>
>> For any new attendees: The meetings are video conferences
>> conducted via BlueJeans.  If you are planning to attend,
>> please test your system by visiting
>> https://bluejeans.com/111 before the scheduled meeting time.
>>
>> Tom.
>>
>> --
>> SG16 mailing list
>> SG16_at_[hidden] <mailto:SG16_at_[hidden]>
>> https://lists.isocpp.org/mailman/listinfo.cgi/sg16
>>
>>
>
> --
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> SG16_at_[hidden] <mailto:SG16_at_[hidden]>
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>
>



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