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Re: [css-writing-modes] feedback: bottom-to-top scripts?

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 9 Oct 2013 11:11:24 -0700
Message-ID: <CAAWBYDAyGaTKeC1OCa8jRprQKzUtZ=wUa9zuTnpD_qDzLc+seA@mail.gmail.com>
To: mholmes@uvic.ca
Cc: www-style list <www-style@w3.org>
On Tue, Sep 3, 2013 at 10:52 AM, Martin Holmes <mholmes@uvic.ca> wrote:
> Hi there,
>
> The current draft of the CSS Writing Modes specification states:
>
> "Inherently bottom-to-top scripts are not handled in this version. See
> [UTN22] for an explanation of relevant issues."
>
> However, I can't find in UTN 22 any justification for the omission of
> bottom-to-top scripts; UTN 22 in fact includes:
>
> ltr-btt
>         Left to right directionality in horizontal text; Bottom to top
>         directionality  in vertical text. (Bi-orientational script)
>         Example: Ogham.
>
> Other bottom-to-top scripts exist (such as Ancient Berber).
>
> I'm therefore a little puzzled by the decision to exclude bottom-to-top from
> CSS Writing Modes. Is it simply because the range of use-cases is so narrow,
> so the implementation burden placed on user-agent developers was not felt to
> be justifiable?

You got it in one.

~TJ
Received on Wednesday, 9 October 2013 18:12:18 UTC

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