[MPEG-OTSPEC] Defining the text shaping working group’s scope

[suzuki toshiya]

Dear Vladimir,

Thank you for reminding the ongoing discussion to W3C Font and Text CG!!
Although I'm almost silent about the recent discussion (due to my business in
the university and the epidemic issues), I'm aware of the migration to the new
group. I would participate the group too (oh, sorry for too late action), thanks
again!

Regards,
mpsuzuki

Levantovsky, Vladimir wrote:
> Dear Suzuki-san,
> 
> My apologies for a very late response to your email, I just found it stuck in my spam filter archive.
> 
> I realize that a lot of discussions took place since early August until now, I just want to make sure that you’re aware that he continued discussions on the subjects of text layout and shaping will be happening as part of the activities of the newly formed W3C Font and Text CG: https://www.w3.org/community/font-text/<https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.w3.org%2Fcommunity%2Ffont-text%2F&data=02%7C01%7Cmpsuzuki%40hiroshima-u.ac.jp%7C1f26a8b564284d8e546d08d85501d431%7Cc40454ddb2634926868d8e12640d3750%7C1%7C1%7C637352813630868824&sdata=YJ88L6V%2FlcRtdWcJYq9x4NJLMOw8O2W%2FdXQ8m35wehk%3D&reserved=0>
> 
> I am looking forward to your continued participation and contributions on these subjects, and would like to encourage you to join the CG.
> 
> Thank you,
> Vladimir
> 
> 
> From: suzuki toshiya <mpsuzuki at hiroshima-u.ac.jp>
> Sent: Monday, August 3, 2020 9:51 PM
> To: Levantovsky, Vladimir <Vladimir.Levantovsky at monotype.com>
> Cc: mpeg-otspec at lists.aau.at
> Subject: Re: Defining the text shaping working group’s scope
> 
> Dear AHG Convenor,
> 
> Maybe it's too late to ask such question, but please let me ask about the coverage of "Text Shaping". The first web page suggested by Google for "Text Shaping" is the document of harfbuzz library. I understand "Text Shaping" does the selection or extraction of the graphic data for an appropriate glyph, or grapheme, or ligature, or cluster by a specified single font instance, from the string of the coded character set. It does not assume the input is marked-up text like HTML.
> 
> I guess, "Text Shaping" is a part of "Text Layout", but some of "Text Layout" might be out of the scope of "Text Shaping". For example, the vertical layout of Japanese text, like,
> 
> On 2020/03/26 4:56, 'Levantovsky, Vladimir' vladimir.levantovsky at monotype.com<mailto:vladimir.levantovsky at monotype.com> [mpeg-OTspec] wrote:
>> 3. Compatibility problem with ‘vert’
>> The discussion linked from https://lists.w3.org/Archives/Public/www-archive/2019Dec/<https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fprotect-us.mimecast.com%2Fs%2Fe1pACBB2pPc7kXLkFNVkdS&data=02%7C01%7Cmpsuzuki%40hiroshima-u.ac.jp%7C1f26a8b564284d8e546d08d85501d431%7Cc40454ddb2634926868d8e12640d3750%7C1%7C1%7C637352813630868824&sdata=3WpvOqJ9eitmGoISP0d7LXe%2F3qybtcZOmXGypx8ntdE%3D&reserved=0><https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.w3.org%2FArchives%2FPublic%2Fwww-archive%2F2019Dec%2F&data=02%7C01%7Cmpsuzuki%40hiroshima-u.ac.jp%7Cb7c64ddd8e5e42d1d7ae08d7d0f6af90%7Cc40454ddb2634926868d8e12640d3750%7C1%7C1%7C637207630239695678&sdata=wPI25fu%2FEiHrhkIAFGIU893TUG1OVlD6DxVWrgI2tCE%3D&reserved=0<https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fprotect-us.mimecast.com%2Fs%2F9hR6CDk2rQt5WL8WuZNUOG&data=02%7C01%7Cmpsuzuki%40hiroshima-u.ac.jp%7C1f26a8b564284d8e546d08d85501d431%7Cc40454ddb2634926868d8e12640d3750%7C1%7
C1%7C637352813630878824&sdata=nvxDitulITfziRgZb0ZaKTM1YzIJrYGWmg9apqVl%2BMw%3D&reserved=0>> seem to be specific to a particular behavior of existing version of Adobe InDesign application and Adobe Japanese font set. Considering the recent changes introduced by ISO/IEC 14496-22:2019/AMD1, I am not sure how much more (if anything) need to be done on the spec side. I do realize that both applications and fonts need to be updated to be compliant with new feature descriptions.
> 
> is covered by "Text Shaping" ? I believe, "Text Layout" covers it, but I'm not sure whether "Text Shaping" covers it.
> 
> Regards,
> mpsuzuki
>