[css-display-3] display: contents computes to display: none on replaced elements. #2755 per WG resolution

Author: fantasai

css-display-3/Overview.bs

@@ -572,7 +572,7 @@ Box Generation: the ''display/none'' and ''display/contents'' keywords</h3>
 			and property <a>inheritance</a>,
 			are not affected.
 
-			This value behaves as ''display: none'' on replaced elements
+			This value computes to ''display: none'' on replaced elements
 			and other elements whose rendering is not entirely controlled by CSS;
 			see [[#unbox]] for details.
 
@@ -1194,7 +1194,7 @@ HTML Elements {#unbox-html}
 	: <{textarea}>
 	: <{select}>
 	::
-		''display: contents'' behaves as ''display: none''.
+		''display: contents'' computes to ''display: none''.
 
 	: <{legend}>
 	::
@@ -1221,7 +1221,7 @@ SVG Elements {#unbox-svg}
 		(this includes all <{svg}> whose parent is an HTML element,
 		as well as document root elements)
 	::
-		''display: contents'' behaves as ''display: none''.
+		''display: contents'' computes to ''display: none''.
 
 	: All other SVG [=container elements=] that are also [=renderable elements=]
 	: SVG [=text content child elements=]
@@ -1233,7 +1233,7 @@ SVG Elements {#unbox-svg}
 
 	: any other SVG elements
 	::
-		''display: contents'' behaves as ''display: none''.
+		''display: contents'' computes to ''display: none''.
 
 	<div class="note">
 		The intention here is that
@@ -1296,7 +1296,7 @@ MathML Elements {#unbox-mathml}
 -------------------------------
 
 	For all MathML elements,
-	''display: contents'' behaves as ''display: none''.
+	''display: contents'' computes to ''display: none''.
 
 <h2 class=no-num id="box-guidelines">
 Appendix C: Box Construction Guidelines for Spec Authors</h2>
@@ -1346,6 +1346,14 @@ Acknowledgments</h2>
 <h2 class=no-num id="changes">
 Changes</h2>
 
+	Changes since the <a href="https://www.w3.org/TR/2018/WD-css-display-3-20180420/">20 April 2018 Working Draft</a> include:
+
+	<ul>
+		<li>
+			Elements with ''display: contents'' that behave as ''display: none'' now <em>compute to</em> ''display: none''.
+			(<a href="https://github.com/w3c/csswg-drafts/issues/2755">Issue 2755</a>)
+	</ul>
+
 	Changes since the <a href="https://www.w3.org/TR/2017/WD-css-display-3-20170720/">20 July 2017 Working Draft</a> include:
 
 	* Tightened up rules for the <a>blockification</a> of ''display/inline-block'' / ''inline flow-root''