LWG4043 `"ASCII"` is not a registered character encoding

[tahonermann]

https://cplusplus.github.io/LWG/issue4043

[tahonermann]

SG16 discussed this issue during its 2024-02-21 meeting. The following polls were taken:

• Poll 1: Approve the addition of "ASCII" as an alias for the US-ASCII IANA encoding.
  • Attendees: 9
  • No objection to unanimous consent.

SG16 review is complete and this now rests solely in LWG's capable hands.

[jwakely]

The issue is Tentatively Ready and will be in the Tokyo polls.

[JeffGarland]

This was approved with https://wg21.link/P3180R0 in Tokyo. Closing.