- From: MURATA Makoto <eb2m-mrt@asahi-net.or.jp>
- Date: Fri, 22 Feb 2013 17:12:16 +0900
- To: "CJK discussion (public-i18n-cjk@w3.org)" <public-i18n-cjk@w3.org>
- Cc: 董福興 <bobbytung@wanderer.tw>
Dear colleagues, I would like to thank those who are very interested in HTML5 Ruby. They help CJK users a lot. But I would like to request more study of requirements and prioritization. First, Bopomofo ruby of Taiwan is not supported well. More about this, see the attached mail from Bobby Tung. Second, in a workshop "eBooks: Great Expectations for Web Standards", the CSS WG chair pointed out an issue with CSS Ruby(WD), from which EPUB3 borrows a feature (-epub-ruby-position). But this working draft is old and is not being developed by any member of the CSS WG. IDPF is aware that this feature is mandatory for the support of Bopomofo ruby for horizontal writing. Third, the Electronic Book Publishers Association of Japan conducted a survey of requirements last year. Twenty features are about Ruby. All features except the distinction of mono/group/jukugo ruby are ruby formatting. Double-side ruby is not mentioned. http://www.ebpaj.jp/images/youbou.pdf (in Japanese) Fourth, a number of pages in JLREQ are devoted to Ruby. Again, they are about the distinction of mono/group/jukugo ruby as well as ruby formatting. Only two sentences are devoted to double-side ruby, and it is described as "very rare." http://www.w3.org/TR/jlreq/#ruby_and_emphasis_dots Fifth, some of you remember that I am against HTML double-side ruby. My mails did not change anything, but they are available at: http://lists.w3.org/Archives/Public/public-i18n-cjk/2012JanMar/0071.html http://lists.w3.org/Archives/Public/public-i18n-cjk/2012JanMar/0067.html http://lists.w3.org/Archives/Public/public-i18n-cjk/2012JanMar/0057.html Regards, Makoto (lead of the Enhanced Global Language Support sub-group of the IDPF EPUB WG) ---------- Forwarded message ---------- From: 董福興 Bobby Tung <bobbytung@wanderer.tw> Date: 2013/2/21 Subject: RE: Bopomofo ruby in EPUB3: -epub-rub-position To: eb2mmrt@gmail.com Cc: Markus Gylling <markus.gylling@gmail.com>, 龐 文真 <sophie.pang@dpublishing.org.tw> Mr. Murata I'm Bobby Tung from Wanderer Digital Publishing Inc. in Taiwan. Sophie Pang forward this letter to me. If possible, please forward to members in mail-list and let me follow the discussion. I've made a Bopomofo ruby sample as attachment for testing. Bopomofo is used in education area, usually for pre-school and primary school. So It should be displayed accurately as print textbook for adoption. Practically, neither browsers nor reading system support Bopomofo ruby well. I'll list reasons below: 1, Ruby-position: inter-character Bopomofo should be all displayed vertically along the right side of the glyph. In vertical writing, it performs well but need letter-spacing fine tuned by reading system. In horizontal writing, none of browsers support ruby-position: inter-charater attribution. 2, Tone markings Bopomofo has 4 tone marking: ˙ˊˇˋ. First one ˙should be positioned top in ruby text area, so that's ok in practice. But others should be along the right side of ruby text area(二重構造になります). This structure is not in Ruby Module Draft. That results Bopomofo display unable to fulfill educational requirement, and hard to practice well. 3, Ruby-align: center Bopomofo usually combines with 1~3 characters. And as mentioned in tone markings, one of them should be placed in the top. To maximum 4 characters for each glyph. In educational usage, all glyph should be with their Bopomofo. So as W3C draft, when ruby-align: center , narrow-cell glyph ruby behavior have to be implied by reading system to reach practical level. Hope reasons listed above able to let you figure out Bopomofo ruby in practice. The most critical problem is position of tone markings. Once solved, with browsers' and reading systems' implement and tool to add characters and tone marking to every glyph. It will be sufficient to use EPUB 3 in language learning in Taiwan. Regards Bobby Tung WANDERER Digital Publishing Inc. Bobby Tung Mobile:+886-975068558 E-mail:bobbytung@wanderer.tw Web:http://wanderer.tw
Received on Friday, 22 February 2013 08:12:50 UTC