Replying so that this message is reflected in the SG16 list archives due
to an archive failure following the transition to the new SG16 mailing list.

Tom.

On 11/23/19 9:02 PM, Victor Zverovich via SG16 wrote:
> Dear Unicoders,
>
> Per Zach's suggestion I'm writing to clarify the origin of the width
> estimate table in P1868.
>
> The table is based on Markus Kuhn's open-source implementation of
> `wcwidth()` and `wcswidth()` for Unicode
> (https://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c) which is listed in the
> references. We translated it from code into a table form.
>
> There are other implementations of display width estimation, some of
> which were overfit to particular terminals. The one by Kuhn was simple
> enough and gave reasonable results in tests which is why we used it.
>
> Cheers,
> Victor
>
>