This meeting is starting in 15 minutes. *Please note the time change
since we last met!*

Tom.

On 11/18/25 12:04 PM, Tom Honermann via SG16 wrote:
>
> SG16 will hold a meeting *tomorrow*, Wednesday, November 19th, at
> 19:30 UTC (timezone conversion
> <https://www.timeanddate.com/worldclock/converter.html?iso=20251119T193000&p1=1440&p2=tz_pst&p3=tz_mst&p4=tz_cst&p5=tz_est&p6=tz_cet>).
>
> *Note that daylight savings time has ended since we last met; this
> meeting will start one hour earlier local time relative to our last
> meeting.*
>
> The agenda is:
>
> * P3695R2: Deprecate implicit conversions between Unicode character
> types <https://wg21.link/p3695r2>.
> * P3688R4: ASCII character utilities <https://wg21.link/p3688r4>.
>
> *P3695R2* is a new revision that addresses SG16 feedback provided
> during the 2025-09-24 SG16 meeting
> <https://wiki.edg.com/bin/view/Wg21telecons2025/SG16Teleconference2025-09-24>.
> The new revision deprecates conversions between the char8_t and
> wchar_t types as recommended by SG16. The paper also has new prose
> with rationale for not deprecating conversions between char16_t and
> char32_t and why considering these sets of conversions as narrowing
> should not be preferred over deprecation. Corentin has kindly
> implemented support for the deprecations proposed in an earlier
> revision as warnings in Clang, so experimentation at
> https://compiler-explorer.com/z/PGdxYrxh8 is encouraged. Assuming no
> new concerns are raised, we will poll to forward the paper to CWG.
>
> *P3688R4* seeks to provide a suite of utility functions specialized
> for working with ASCII text or the ASCII subset of Unicode text.
> Predicates for querying character properties, transformers for case
> conversions, and case insensitive comparators are provided. An
> implementation is provided at https://godbolt.org/z/h41hzr5d5, so
> again, experimentation is encouraged. We'll review the proposal and,
> if all is copacetic, poll to forward it to LEWG.
>
> Tom.
>
>
>