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Re: [csswg-drafts] [css-fonts-4] [varfont] font format (src descriptor) function should be updated

From: Sergey Malkin via GitHub <sysbot+gh@w3.org>
Date: Thu, 20 Oct 2016 18:55:35 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-255195947-1476989733-sysbot+gh@w3.org>

Based on your analysis, this looks like correct statement:

> Therefore, neither of these fallback mechanisms will work properly 
in these two existing browsers.

However, this is not because Edge and Firefox violate the spec as you 

> In both examples, because these extra arguments are not treated as 
parse errors in those browsers, current versions of these two browsers
 will erroneously fetch the one marked as needing variations despite 
the browser not understanding variations. 

In fact, per css-fonts-4 spec, these browsers process format hints 

> The format hint contains a comma-separated list of format strings 
that denote well-known font formats. Conformant user agents must skip 
downloading a font resource if the format hints indicate only 
unsupported or unknown font formats.

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Received on Thursday, 20 October 2016 18:55:45 UTC

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