bug#47712: 27.1; Provide `string-display-width` function, which takes properties into account, `substring-width`

[Eli Zaretskii]

> Cc: 47712@debbugs.gnu.org
> From: Daniel Mendler <mail@daniel-mendler.de>
> Date: Tue, 13 Apr 2021 14:25:18 +0200
> 
> Yes, `string-width` is broken for face-dependent purposes. However there 
> are still these handful of use cases which will probably not go away 
> (org-mode table, formatting monospaced text, ...). In those existing 
> cases the `string-width` function is often used in combination with 
> `substring`, i.e., `(string-width (substring str beg end)`.
> 
> Therefore I would be happy with the following resolution:
> 
> 1. Add two arguments begin and end to `string-width` to improve the 
> current uses of `string-width`.
> 
> 2. Document the caveats of `string-width` in the docstring (works only 
> reliable in text mode for multi-width chars) and maybe mention 
> `window-text-pixel-size` or the `string-pixel-width` function by Martin.

Your wishes have been granted, see the latest master branch.

Is there anything else to do with this bug report, or can we close it?