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Re: [css-writing-modes] 'direction' vs. vertical text

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 7 May 2014 09:27:37 -0700
Message-ID: <CAAWBYDDUfU2KkrnxEahnSuDkNvbU_HnYeyXxfAs3=Up6VuHNfA@mail.gmail.com>
To: Simon Sapin <simon.sapin@exyr.org>
Cc: www-style list <www-style@w3.org>
On Wed, May 7, 2014 at 7:59 AM, Simon Sapin <simon.sapin@exyr.org> wrote:
> In "Introduction to Writing Modes", the inline base direction is defined
> such that it exists in all writing modes. However, the current definition of
> the 'direction' property seems to assume an horizontal writing mode:
>> Values for this property have the following meanings:
>> ltr
>>     Left-to-right directionality.
>> rtl
>>     Right-to-left directionality.
> What do these values mean for vertical text?
> Should they map to top-down and bottom-up respectively, or should the
> inline-start direction always be up, or something else?
> (This may be defined in another part of the spec that I haven’t read yet,
> but it should at least be linked from here, if not defined here.)

It could perhaps be clarified that it refers to line-left to
line-right directionality, etc.  (Those are the line-relative

Received on Wednesday, 7 May 2014 16:28:24 UTC

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