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Re: [css-ruby] Add "text-orientation: upright" for bopomofo annotation

From: fantasai <fantasai.lists@inkedblade.net>
Date: Tue, 25 Aug 2015 16:15:59 +0200
Message-ID: <55DC789F.10607@inkedblade.net>
To: Xidorn Quan <quanxunzhen@gmail.com>, www-style list <www-style@w3.org>
On 08/25/2015 02:59 PM, Xidorn Quan wrote:
> Hi,
>
> I propose that we should add "text-orientation: upright" to the
> "rt:lang(zh-TW)" rule.
>
> The reason is that, all the tone marks in bopomofo (U+02CA, U+02C7,
> U+02CB, U+02D9) have Vertical_Orientation property "R" while the
> bopomofo characters are all "U". It means, without explicitly setting
> text-orientation to upright, the text run would break between them,
> which makes it impossible to use font feature to place the tone mark
> properly.

I think it would make more sense to have Unicode update UTR50 to make
these characters upright in mixed-orientation text (or otherwise tailor
it within CSS as a whole). It's not just a problem with ruby.

~fantasai
Received on Tuesday, 25 August 2015 14:16:29 UTC

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