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Re: [csswg-drafts] [css-grid] Percentages and intrinsic size

From: Tab Atkins Jr. via GitHub <sysbot+gh@w3.org>
Date: Thu, 02 Feb 2017 21:52:35 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-277095944-1486072353-sysbot+gh@w3.org>
They're not defined that way; there's a non-normative summary sentence
 (using the word "essentially", and another one using "as if") making 
a general statement that they operate as if they're empty.  But 
there's nothing normative stating that; as the spec is written, "treat
 as `auto`" would indeed result in different sizes in some cases.

However, we discussed this at the F2F 
 and resolved that percentages are 0 for determining intrinsic width, 
but still resolve at used-value time, giving us the Chrome behavior 
(where the yellow track overflows the grid container, in Manuel's 

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