[css-sizing] Try to define the contributions of replaced elements.

Author: tabatkins

css-sizing/Overview.bs

@@ -96,11 +96,11 @@ Terminology</h2>
 		<dd>
 			The <i>fill-available fit</i> into a given size
 			is that size,
-			minus the element's computed margins (not collapsed, treating ''auto'' as zero),
+			minus the element's computed margins (not collapsed, treating ''margin/auto'' as zero),
 			border, and padding in the given dimension.
 
 			<p class='note'>
-				Note: This is the formula used to calculate the ''auto'' widths
+				Note: This is the formula used to calculate the ''width/auto'' widths
 				of non-replaced blocks in normal flow in <a href="http://www.w3.org/TR/CSS21/visudet.html#blockwidth">CSS2.1§10.3.3</a>.
 
 		<dt><dfn title="fallback|fallback size">fallback size</dfn>
@@ -310,7 +310,7 @@ Column Sizing Keywords</h3>
 	New values: fill | max-content | min-content | fit-content
 	</pre>
 
-	<p>When  used as values for <a href="http://www.w3.org/TR/css3-multicol/#cw">'column-width'</a>,
+	<p>When  used as values for 'column-width',
 		the new keywords specify the optimal column width:
 
 	<dl dfn-type=value dfn-for="column-width">
@@ -351,6 +351,11 @@ Intrinsic Sizes of Replaced Elements</h3>
 		of the element,
 		calculated with an unconstrained specified size.
 
+	The <a>min-content contribution</a> and <a>max-content contribution</a> in each axis
+	is the element's specified outer size in that axis, if definite,
+	and the <a>min-content size</a>, as specified above, plus the element's margin/border/padding in that axis otherwise,
+	clamped by the element's min and max size properties in that axis.
+
 <h3 id='inline-intrinsic'>
 Intrinsic Sizes of Non-Replaced Inlines</h3>
 
@@ -440,38 +445,38 @@ Intrinsic Sizes in Multi-column Layout</h3>
 
 	<p>
 		The <i>min-content inline-size</i> of a multi-column element
-		with a computed 'column-width' not ''auto''
+		with a computed 'column-width' not ''column-width/auto''
 		is the smaller of
 		its 'column-width'
 		and the largest <i>min-content inline-size contribution</i> of its contents.
 
 	<p>
 		The <i>min-content inline-size</i> of a multi-column element
-		with a computed 'column-width' of ''auto''
+		with a computed 'column-width' of ''column-width/auto''
 		is the largest <i>min-content inline-size contribution</i> of its contents
 		multiplied by its 'column-count'
-		(treating ''auto'' as ''1'').
+		(treating ''column-count/auto'' as ''1'').
 
 	<p>
 		The <i>max-content inline-size</i> of a multi-column element
 		with unrestrained column heights
-		and a computed 'column-count' not ''auto''
+		and a computed 'column-count' not ''column-count/auto''
 		is its 'column-count'
 		multiplied by the larger of
-		its 'column-width' (treating ''auto'' as 0)
+		its 'column-width' (treating ''column-width/auto'' as 0)
 		and the largest <i>max-content inline-size contribution</i> of its contents.
 
 	<p>
 		The <i>max-content inline-size</i> of a multi-column element
 		with unrestrained column heights
-		and a computed 'column-count' of ''auto''
+		and a computed 'column-count' of ''column-count/auto''
 		is its 'column-width'
 		multiplied by the number of columns obtained by taking all allowed column breaks [[CSS3-BREAK]].
 
 	<!--
 	The above was decided based on dholbert's example in http://lists.w3.org/Archives/Public/www-style/2012Oct/0017.html .
 	These definitions make multicols work well in flexbox,
-	both in 'stretch' and non-'stretch' cases,
+	both in ''stretch'' and non-''stretch'' cases,
 	without wasted space or needless overflow.
 	-->
 
@@ -483,7 +488,7 @@ Intrinsic Sizes in Multi-column Layout</h3>
 
 	<ul>
 		<li>
-			Laying out the element with column-spanning elements given 'display: none',
+			Laying out the element with column-spanning elements given ''display: none'',
 			and taking a inline-size that includes all the columns.
 
 		<li>
@@ -511,7 +516,7 @@ Intrinsic Sizes in Multi-column Layout</h3>
 
 	<p>
 		The <i>preferred inline-size</i> of a multi-column element
-		with non-''auto'' 'column-width' and 'column-count'
+		with non-''column-width/auto'' 'column-width' and 'column-count'
 		is the product of the 'column-width' and 'column-count',
 		plus the appropriate amount of column gaps.
 		In all other cases,
@@ -538,7 +543,7 @@ Extrinsic Size Determination</h2>
 		</ul>
 	<p>
 		&hellip;less the box's <i>inline-axis</i> margins
-		(after any <a href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">margin collapsing</a>, and treating ''auto'' margins as zero),
+		(after any <a href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins">margin collapsing</a>, and treating ''margin/auto'' margins as zero),
 		borders, and padding.
 
 	<p>