Re: emojis and other multi-character glyphs

[Evgeny Zajcev <lg.zevlg@gmail.com>]

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вс, 26 дек. 2021 г. в 13:51, Eli Zaretskii <eliz@gnu.org>:

> > From: Evgeny Zajcev <lg.zevlg@gmail.com>
> > Date: Sun, 26 Dec 2021 13:41:21 +0300
> > Cc: emacs-devel <emacs-devel@gnu.org>
> >
> >  > And also it will be possible to write something like
> `string-glyph-length' to return 1 for "👨‍👩‍👧‍👦"
> >  instead of 7
> >  > as `length' returns now.
> >
> >  Why would that be useful?
> >
> > Sometimes it is useful to know real string length before acting on
> > it.
>
> If you mean their width on display, then we have string-width for
> that.  And if you need absolute accuracy, use window-text-pixel-size.
>
> > In my case, I use a service that has
> > limitation on number chars it can act on and emojis are counted as
> > single char.
>
> But that is incorrect: most Emoji sequences occupy two columns on display.
>

No, no, not string-width, string length in number of glyphs, as Swift
counts them: "👨‍👩‍👧‍👦".length == 1

-- 
lg

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