[css-sizing-3] Handle automatic minimum sizes alongside other intrins…

…ic sizes in cyclic percentage handling. #2674

css-sizing-3/Overview.bs

@@ -948,7 +948,8 @@ Extrinsic Size Determination</h2>
 	Sometimes the size of a percentage-sized box’s <a>containing block</a>
 	depends on the intrinsic size contribution of the box itself,
 	creating a cyclic dependency.
-	When calculating the <a>intrinsic size contribution</a> of such a box,
+	When calculating the <a>intrinsic size contribution</a> of such a box
+	(including any calculations for a content-based <a>automatic minimum size</a>),
 	a <dfn>cyclic percentage</dfn>--
 	that is,
 	a percentage value that would resolve against a containing block size
@@ -993,6 +994,10 @@ Extrinsic Size Determination</h2>
 		The UA may additionally floor this size based on UI considerations,
 		such as ensuring certain UI elements remain visible
 		(for example, the dropdown arrow on a <{select}>).
+		This rule also applies when calculating
+		a content-based <a>automatic minimum size</a>
+		or its corresponding size contribution,
+		yielding a <a>definite</a> “specified size suggestion”.
 
 		<div class=example>
 			For example,
@@ -1221,7 +1226,8 @@ Changes</h2>
 		<li>More rigorously specified handling of <a>cyclic percentages</a>.
 			(<a href="https://github.com/w3c/csswg-drafts/issues/1132">#1132</a>,
 			 <a href="https://github.com/w3c/csswg-drafts/issues/2384">#2384</a>,
-			 <a href="https://github.com/w3c/csswg-drafts/issues/2297">#2297</a>)
+			 <a href="https://github.com/w3c/csswg-drafts/issues/2297">#2297</a>,
+			 <a href="https://github.com/w3c/csswg-drafts/issues/2674">#2674</a>)
 		<li>Changed the ''*-content'' values applied to the bock axis
 			to not compute to the property’s initial value,
 			but to rather “behave as” the property’s initial value.