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[csswg-drafts] Issue: [css-text-decor] `text-decoration-skip: ink` should allow not to skip for CJK and certain ideographic scripts marked as i18n-tracking

From: r12a via GitHub <sysbot+gh@w3.org>
Date: Thu, 17 Nov 2016 12:49:19 +0000
To: www-international@w3.org
Message-ID: <issues.labeled-189126432-None-sysbot+gh@w3.org>
r12a has just labeled an issue for https://github.com/w3c/csswg-drafts
 as "i18n-tracking":

== [css-text-decor] `text-decoration-skip: ink` should allow not to 
skip for CJK and certain ideographic scripts ==
Currently we're considering implementing `text-decoration-skip: ink`, 
and investigating what to do with CJK.

* CJK does not want to skip ink in general.
* Blink has not implemented heuristics to draw underlines to `under` 
position for CJK yet, and therefore underlines have high possibility 
to overlap with glyphs.

Implementing `text-underline-position: auto` to draw at `under` 
position for CJK is one way to solve this, and we're investigating 
this option.

The other option, we found WebKit does not skip ink for characters in 
CJK and Linear B ideogram blocks.

This might make sense since when font-size is small, no matter what we
 do, there may be overlaps.

On the other hand, some special fancy CJK fonts such as 
[Kazuraki](https://typekit.com/fonts/kazuraki-sp2n) may want to skip 
ink.

I haven't come to the conclusion yet, but should the 
`text-decoration-skip: ink` allow not to skip for some scripts or 
under certain conditions? I mean I think it should, though I'm not 
clear how to define it properly yet.

Thoughts?

cc @litherum @fantasai @drott @masayuki-nakano @dbaron @upsuper @r12a 

See https://github.com/w3c/csswg-drafts/issues/707
Received on Thursday, 17 November 2016 12:49:25 UTC

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