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Fix "create an element for a token" with duplicate attributes #1637

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Fix "create an element for a token" with duplicate attributes #1637

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9 changes: 5 additions & 4 deletions source
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Original file line number Diff line number Diff line change
Expand Up @@ -103201,8 +103201,8 @@ dictionary <dfn>StorageEventInit</dfn> : <span>EventInit</span> {

<li><p>Let <var>local name</var> be the tag name of the token.</p></li>

<li><p>Let <var>is</var> be the value of the "<code data-x="attr-is">is</code>" attribute in the
given token, if such an attribute exists, or null otherwise.</p></li>
<li><p>Let <var>is</var> be the value of the first "<code data-x="attr-is">is</code>" attribute
in the given token, if such an attribute exists, or null otherwise.</p></li>

<li><p>Let <var>definition</var> be the result of <span data-x="look up a custom element
definition">looking up a custom element definition</span> given <var>document</var>, <var>given
Expand Down Expand Up @@ -103251,8 +103251,9 @@ dictionary <dfn>StorageEventInit</dfn> : <span>EventInit</span> {
</li>

<li>
<p><span data-x="concept-element-attributes-append">Append</span> each attribute in the given
token to <var>element</var>.</p>
<p>For each attribute in the given token, if <var>element</var> does not already have an
attribute with the same name, <span data-x="concept-element-attributes-append">append</span> the
attribute to <var>element</var>.</p>

<p class="note">This can <span>enqueue a custom element callback reaction</span> for the
<code data-x="">attributeChangedCallback</code>, which might run immediately (in the next
Expand Down