Please review the following. If you agree with the proposed change and have no further information to add, then there is no need to respond. If you disagree with the proposed change, have corrections or new information to offer, or have comments on the candidate polls, then please reply by Monday, October 31st.

FR [format.string.std] codepoints with width 2

GitHub nbballot issue #409.
LWG issue 3780.
P2675R0: LWG 3780: The Paper (format's width estimation is too approximate and not forward compatible).


The range of codepoints to be considered of width 2 is not compatible with recent and future unicode versions.

Proposed change:

Please adopt LWG3780 for C++23, backported to C++20

SG16 chair notes:

Thank you to Corentin for filing LWG issue 3780 and for authoring P2675 in response to requests for a more thorough analysis of the consequences of the proposal.

Candidate polls: