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Bug 10844 - Mono ruby, group ruby, and jukugo ruby
Summary: Mono ruby, group ruby, and jukugo ruby
Status: RESOLVED NEEDSINFO
Alias: None
Product: HTML WG
Classification: Unclassified
Component: pre-LC1 HTML5 spec (editor: Ian Hickson) (show other bugs)
Version: unspecified
Hardware: All All
: P2 normal
Target Milestone: ---
Assignee: Ian 'Hixie' Hickson
QA Contact: HTML WG Bugzilla archive list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-09-30 00:44 UTC by Murata
Modified: 2010-10-04 13:56 UTC (History)
5 users (show)

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Description Murata 2010-09-30 00:44:23 UTC
There are three styles of Japanese ruby, as shown in the W3C JLReq (http://www.w3.org/TR/jlreq/#en-subheading2_3).  They are mono ruby, group ruby, and jukugo ruby.  It is not clear which of these three styles can be represented in HTML5.

Location in reviewed document:
4.6.18 The ruby element
[http://www.w3.org/TR/2010/WD-html5-20100624/text-level-semantics.html#the-ruby-element]

There are two sources of information.

    * An e-mail to the public-html-ig-jp@w3.org by Roland Steiner (the author of the current WebKit implementation of ruby) shows how to capture mono/group/jukugo ruby in HTML5. 

    * Ruby use cases from the JLReq document shows how HTML5 and and Ruby Annotation (XHTML) can be used for capturing mono, group, and jukugo ruby. 

More about this, see http://code.google.com/p/epub-revision/wiki/EGLS_solutions#Solutions_to_Ruby_and_Emphasis_Dots


Please incorporate information from these sources to HTML5 and make clear which style of ruby is supported.  I think that the examples in the current HTML5 spec is jukugo ruby.
Comment 1 Tab Atkins Jr. 2010-09-30 00:47:29 UTC
The definition and specification of ruby rendering in browsers is controlled by CSS.  Please refer to the CSS3 Ruby Module for details: http://www.w3.org/TR/css3-ruby/ .
Comment 2 Ian 'Hixie' Hickson 2010-09-30 07:40:55 UTC
EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the tracker issue; or you may create a tracker issue yourself, if you are able to do so. For more details, see this document:
   http://dev.w3.org/html5/decision-policy/decision-policy.html

Status: Did Not Understand Request
Change Description: no spec change
Rationale: If you would like more examples, please provide fragments of HTML with those examples in ASCII files (with the CJK characters marked up as numeric character references) along with images showing how those examples are expected to render and along with sufficient explanatory material that I can just put in the spec with those examples. I am unfortunately not qualified to create such examples myself, but I would be very happy to add such text to the specification if such text were provided.
Comment 3 Murata 2010-09-30 10:15:32 UTC
(In reply to comment #1)
> The definition and specification of ruby rendering in browsers is controlled by
> CSS.  Please refer to the CSS3 Ruby Module for details:
> http://www.w3.org/TR/css3-ruby/ .

It is true that stylesheets are needed to have full control of ruby layout.  However, I do not think that an HTML5 fragment for mono ruby can be rendered as jukugo ruby by a CSS stylesheet.  HTML5 should provide enough logical markup for ruby so that CSS can do ruby formatting.  Quite a few people believe HTML5 already does the job, but the spec needs clarification.
Comment 4 Murata 2010-09-30 10:19:26 UTC
(In reply to comment #2)

> Rationale: If you would like more examples, please provide fragments of HTML
> with those examples in ASCII files (with the CJK characters marked up as
> numeric character references) along with images showing how those examples are
> expected to render and along with sufficient explanatory material that I can
> just put in the spec with those examples.

Thanks.  I will do so after IDPF EPUB WG and its Enhanced Global Language Support sub-group review the examples in 
http://code.google.com/p/epub-revision/wiki/EGLS_solutions#Solutions_to_Ruby_and_Emphasis_Dots



IDPF EPUB WG/EGLS Sub-Group coordinator
MURATA Makoto