Re: [css-ruby] Computing writing-mode for inter-character ruby

Ping on this problem.

On Mon, Feb 16, 2015 at 4:03 PM, Xidorn Quan <quanxunzhen@gmail.com> wrote:

> The current spec says:
>
> This value forces the computed value of writing-mode of the ruby
> annotation container to be vertical-rl.
>
> And according to the discussions in CSSWG F2F meeting in Sydney, because
> of the cyclic dependency between writing-mode and display, the spec should
> be changed to something like
>
> The writing-mode of a ruby annotation is computed to vertical-rl if the
> ruby-position of its container is inter-character.
>
> But both forms have a problem encountered from the inheriting rule of
> anonymous boxes. Since either ruby annotation or its container could be an
> anonymous box (but never both), in which case, its computed writing-mode
> value cannot be inherited by its descendants.
>
> I have no idea how to solve this. If the cyclic dependency above is
> allowed, though, probably we can say the writing-mode is computed to
> vertical-rl for both ruby annotation and ruby annotation container.
>
> - Xidorn
>