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Re: [css-ui] text-overflow and text-orientation: upright

From: John Daggett <jdaggett@mozilla.com>
Date: Mon, 20 Apr 2015 16:11:28 +0900
Message-ID: <CALYZoVMsF9v3E5ENRDG5hzwnAcFpwW4twbWypCoaba_ASQX=ww@mail.gmail.com>
To: Florian Rivoal <florian@rivoal.net>
Cc: Xidorn Quan <quanxunzhen@gmail.com>, www-style list <www-style@w3.org>
Florian Rivoal wrote:

> > This will do want you want for this case because the 'vert' feature
> > is always applied to upright vertical textruns. Making this work for
> > fonts lacking support for vertical layout (vertical metrics,
> > vertical substitutions) is out of scope for user agents I think.
> Such fonts are in common use in CJK typography, but western authors
> are unlikely to be familiar with them. Vertical typesetting is
> certainly more rare in western text, but it does happen occasionally,
> and when it does authors would likely want the effect Xidorn mentioned.
> HTML has both &hellip; and &vellip;.
> Wouldn't it be appropriate for the UA to chose the ellipsis character
> based on the writing mode, and use &hellip; (U+2026) in horizontal
> text, and &vellip; (U+22EE) or U+FE19?
> If we don't want to mandate this outright, the spec already has a
> provision to allow UAs to pick a different character than &hellip; as
> appropriate based on language or script. We could simply allow UAs to
> also consider the writing mode.
> This would mean changing this sentence:
>   Implementations may substitute a more language/script-appropriate
>   ellipsis character, or three dots "..." if the ellipsis character
>   is unavailable
> into this:
>   Implementations may substitute a more language, script, or writing-mode
>   appropriate ellipsis character, or three dots "..." if the ellipsis
>   is unavailable.

The specific case Xidorn is pointing out has to do with *upright*
vertical Latin text. There isn't a broad use case for text-overflow:
ellipsis in this case. Your change seems fine if you really want to give
implementations a range of options.

Received on Monday, 20 April 2015 07:11:56 UTC

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