Re: [whatwg/dom] Introduce DOM post-insertion steps (PR #1261)

@smaug---- commented on this pull request.



> +  modify the tree's structure, making live traversal unsafe, possibly leading to the
+  <a>post-insertion steps</a> being called multiple times on the same <a>node</a>.</p>
+ </li>
+
+ <li>
+  <p>For each <var>node</var> in <var>nodes</var>, in <a>tree order</a>:
+
+  <ol>
+   <li><p>For each <a>shadow-including inclusive descendant</a> <var>inclusiveDescendant</var> of
+   <var>node</var>, in <a>shadow-including tree order</a>, <a for=list>append</a>
+   <var>inclusiveDescendant</var> to <var>staticNodeList</var>.
+  </ol>
+ </li>
+
+ <li><p><a for=list>For each</a> <var>node</var> in <var>staticNodeList</var>, if <var>node</var> is
+ <a>connected</a>, then run the <a>post-insertion steps</a> with <var>node</var>.

Why do we have the requirement for the node to be connected? (It wasn't clear to me either when looking at blink's source code, but I didn't look at the blame for that part).


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