[css-contain-3] Container-name requires ident, not string w3c#6405

Author: mirisuzanne

css-contain-3/Overview.bs

@@ -378,13 +378,8 @@ Container Queries</h2>
 		</pre>
 	</div>
 
-	Issue(6376): Bikeshed terms/property names to avoid confusion
-	with other usage of “contain” and “container”?
-
 	Issue(6205): Container Queries should have a matchContainer method
 
-	Issue(7033): Add CSSOM API for CSSContainerRule
-
 <h3 id="container-type">
 Creating Query Containers: the 'container-type' property</h3>
 
@@ -477,7 +472,7 @@ Naming Query Containers: the 'container-name' property</h3>
 
 	<pre class='propdef'>
 		Name: container-name
-		Value: none | [ <<custom-ident>> | <<string>> ]+
+		Value: none | <<custom-ident>>+
 		Initial: none
 		Inherited: no
 		Applies to: all elements
@@ -497,16 +492,8 @@ Naming Query Containers: the 'container-name' property</h3>
 	<dt><dfn><<custom-ident>></dfn>
 	<dd>
 		Specifies a [=query container name=] as an [=identifier=].
-	<dt><dfn><<string>></dfn>
-	<dd>
-		Specifies a [=query container name=] as a <<string>> value;
-		this computes to an [=identifier=]
-		with the same value as the given <<string>>.
 	</dl>
 
-	The keyword <css>none</css> and the string "none"
-	are invalid as <<custom-ident>> or <<string>> values.
-
 	<div class=example>
 		In some cases, we want to query aspects of a specific container,
 		even if it’s not the nearest ancestor container.
@@ -534,22 +521,6 @@ Naming Query Containers: the 'container-name' property</h3>
 		</pre>
 	</div>
 
-	<div class=example>
-		Since <<string>> values are allowed,
-		we can also generate container names from attributes:
-
-		<pre class=lang-css>
-		[data-container] {
-		  container-name: attr(data-container);
-		}
-		</pre>
-
-		This will set the the [=query container name=]
-		to use the contents of the ''data-container'' attribute when provided.
-	</div>
-
-	Issue(6405): container-name string vs ident
-
 
 <h3 id="container-shorthand">
 Creating Named Containers: the 'container' shorthand</h3>
@@ -665,8 +636,6 @@ Container Queries: the ''@container'' rule</h3>
 	that are defined inside [=container queries=]
 	are not constrained by the [=container query=] conditions.
 
-	Issue(6827): What happens to other @rules inside @container?
-
 
 <h3 id="animated-containers">
 Animated Containers</h3>
@@ -1043,6 +1012,9 @@ Changes since the 21 December 2021 First Public Working Draft</h3>
 
 	Significant changes since the <a href="https://www.w3.org/TR/2021/WD-css-contain-3-20211221/">21 December 2021 First Public Working Draft</a> include:
 
+	* Remove the <<string>> option from the 'container-name' syntax.
+		Container names must be <<custom-ident>>s.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/6405">Issue 6405</a>)
 	* Reverse the order of <<container-name>> and <<container-type>>
 		in the 'container' shorthand property, with both being optional.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/6393">Issue 6393</a>)