FR-008-011 22.14 [format] Support formatting of thread::id

[wg21bot]

std::format is not fully integrated with the rest of the standard library.

Please consider adopting P1636R2 so that format and print can be used with standard library types, especially thread::id which is often used for logging purposes. (Integration with filesystem::path has unresolved complexity and should probably be deferred)

[brycelelbach]

The proposed resolution is to adopt P1636 cplusplus/papers#425, which is somewhat stalled, but I think we can look at it anyways and cut it down to just the parts we want.

[brycelelbach]

The updated paper for this NB comment is cplusplus/papers#1358

[tahonermann]

SG16 reviewed P2693R0 (Formatting thread::id and stacktrace) during its 2022-11-30 telecon. The following poll was taken.

• Poll 2: P2693R0: Forward to LEWG as the recommended resolution of FR-008-011.
  • Attendees: 10
  • No objection to unanimous consent.

@brycelelbach, I am removing the SG16 label; this issue is ready for LEWG review.

[JeffGarland]

Reviewed and approved at Issaquah -- see paper issue for details.

[jwakely]

Accepted with modification.