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Re: [csswg-drafts] [css-fonts] FontFaceSet uses referential equality for calculating .has()

From: litherum via GitHub <sysbot+gh@w3.org>
Date: Thu, 07 Jul 2016 16:03:55 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-231125921-1467907433-sysbot+gh@w3.org>
The implementation of this comparison function is site-specific, and 
therefore cannot be implemented by the browser. For example, the 
browser doesn't know th example to questions like these:

- Many browsers don't implement font-stretch. Should this be a part of
 the comparison function? What happens when these browsers start 
implementing it? Existing websites break?
- Should two URLs with different fragment identifiers be considered 
- What about "url(foo.woff)" compared with "url(foo.woff), 
url(fallback.woff)". These appear to be the same only if all the 
characters in the elements styled with them are supported by foo.woff
- foo.woff and foo.woff2 are often conceptually same font
- Are url(foo.ttf) and local(foo) distinct?
- How about unicode-range? If the ranges for the two fonts don't 
overlap? If they overlap by only one code point?

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Received on Thursday, 7 July 2016 16:04:08 UTC

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