Re: [css-ruby] Default font-size of ruby annotation with ruby-position: inter-character

On 12/16/2014 11:11 AM, Koji Ishii wrote:
> On Tue, Dec 16, 2014 at 9:40 AM, Xidorn Quan <quanxunzhen@gmail.com> wrote:
>> Hi,
>>
>> According to documents provided by editors of CLReq, the standard font size
>> of bopomofo in inter-character ruby is 30% of the base text, not 50% like
>> Japanese ruby.
>>
>> The current WebKit implementation introduces a new keyword
>> -webkit-ruby-text, and interpret this to 25% when ruby-position is
>> inter-character, and 50% otherwise.
>>
>> I suggest that this behavior have its place in the spec, but I'm not sure
>> what's the best way to do so.
>
> Thank you for bringing this up. There was a request for a property to
> specify the ruby text size, but from spec-perspective, it was lower
> priority so we postponed. So one way is to spec what WebKit does,
> either by investigating or by asking, and if you implement, we'll get
> two implementations.
>
> The other option is you do whatever you like internally, and we don't
> need to spec.
>
> Whichever you prefer is fine with me, I just want to avoid to spec
> something that is low priority and won't be implemented by at least
> two UAs.
>
> What do you think?

The property for specifying the size of ruby text is 'font-size'.
Saying anything else needs to be approved by the WG (and I think
will get rejected, it makes no sense).

We had a suggested default UA style sheet that specified the size
of ruby text at 50% of the base text.

This was all very clearly specified, and writing anything else about
the font size is not a "clarification", it's a very significant change.

If we need to add a new automagic keyword to 'font-size' to handle
ruby, we can bring that up for consideration. But adding a paragraph
saying the font size is UA-dependent is IMHO not the right approach.

~fantasai