Some members of the Unicode Consortium appear to have been doing some
work in this area. The following paper was recently added to the UTC
document register <https://www.unicode.org/L2/L-curdoc.htm>.

  * L2/23-107
    <https://www.unicode.org/L2/L2023/23107-terminal-suppt.pdf>: Proper
    Complex Script Support in Text Terminals

Those interested in std::format and formatting textual displays might
also find Will McGugan <https://www.willmcgugan.com/>'s work on Rich
<https://github.com/Textualize/rich> interesting. Rich is a Python
library for text formatting. (I'm guessing Victor is aware of it and I
wouldn't be surprised to hear that there has already been some
cross-pollination of ideas).

Tom.

On 4/3/23 12:22 AM, Tom Honermann via SG16 wrote:
>
> The adoption of P2675 (LWG3780: The Paper: format's width estimation
> is too approximate and not forward compatible)
> <https://wg21.link/p2675> prompted me to file an enhancement request
> for ICU to consider providing an interface to query EGC display width
> for monospace applications.
>
> * ICU-22344 <https://unicode-org.atlassian.net/browse/ICU-22344>:
> Support for estimating the monospace display width of a sequence
> of EGCs in a terminal or console
>
> Please feel free to take a look and offer corrections or additional
> comments.
>
> Tom.
>
>