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lukewarlowlukewarlow
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Update how the enforcement is done
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‎dom.bs

+61-43
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@@ -4487,8 +4487,7 @@ dom-Range-extractContents, dom-Range-cloneContents -->
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<ol>
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<li><p>Let <var>copyAttribute</var> be a <a>clone</a> of <var>attribute</var>.
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<li><p><a lt="append an attribute">Append</a> <var>copyAttribute</var> to <var>copy</var>,
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with false.
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<li><p><a lt="append an attribute">Append</a> <var>copyAttribute</var> to <var>copy</var>.
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</ol>
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</li>
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</ol>
@@ -6406,33 +6405,17 @@ given a <var>document</var>, <var>localName</var>, <var>namespace</var>, and opt
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<ol>
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<li><p>Let <var>oldValue</var> be <var>attribute</var>'s <a for=Attr>value</a>.</p></li>
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<li><p><a>Verify and set attribute value</a> <var>value</var> for <var>attribute</var>, with
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<var>attribute</var>'s <a for=Attr>element</a>.
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<li><p>Set <var>attribute</var>'s <a for=Attr>value</a> to <var>value</var>.
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<li><p>If <var>attribute</var>'s <a for=Attr>element</a>
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<a lt="has an attribute">has an attribute</a>, then <a>handle attribute changes</a> for
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<var>attribute</var> with <var>attribute</var>'s <a for=Attr>element</a>, <var>oldValue</var>, and
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<var>value</var>.
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<li><p>Otherwise, throw an "{{InvalidStateError!!exception}}" {{DOMException}}.
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<li><p><a>Handle attribute changes</a> for <var>attribute</var> with <var>attribute</var>'s
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<a for=Attr>element</a>, <var>oldValue</var>, and <var>value</var>.
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</ol>
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<p>To <dfn export id=concept-element-attributes-append lt="append an attribute">append</dfn> an
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<a>attribute</a> <var>attribute</var> to an <a for=/>element</a> <var>element</var>, with an
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optional boolean <var>validate</var> (default true):
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<a>attribute</a> <var>attribute</var> to an <a for=/>element</a> <var>element</var>, run these
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steps:
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<ol>
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<li>
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<p>If <var>validate</var> is true:
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<ol>
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<li><p><a>Verify and set attribute value</a>
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<var>attribute</var>'s <a for="Attr">value</a> for <var>attribute</var>, with <var>element</var>.
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<li><p>If <var>element</var> <a lt="has an attribute">has</a> an <a>attribute</a>
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<var>attribute</var>, then throw an "{{InvalidStateError!!exception}}" {{DOMException}}.
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</ol>
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<li><p><a for=list>Append</a> <var>attribute</var> to <var>element</var>'s
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<a for=Element>attribute list</a>.
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@@ -6461,9 +6444,6 @@ optional boolean <var>validate</var> (default true):
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<a>attribute</a> <var>oldAttr</var> with an <a>attribute</a> <var>newAttr</var>, run these steps:
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<ol>
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<li><p><a>Verify and set attribute value</a> <var>newAttr</var>'s <a for="Attr">value</a> for
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<var>newAttr</var>, with <var>oldAttr</var>'s <a for=Attr>element</a>.
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<li><p><a for=list>Replace</a> <var>oldAttr</var> by <var>newAttr</var> in <var>oldAttr</var>'s
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<a for=Attr>element</a>'s <a for=Element>attribute list</a>.
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@@ -6477,16 +6457,14 @@ optional boolean <var>validate</var> (default true):
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<a for=Attr>value</a>.
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</ol>
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<p>To <dfn>verify and set attribute value</dfn>
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<p>To <dfn>verify attribute value</dfn>
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{{TrustedType}} or string <var>value</var> for an <a>attribute</a> <var>attribute</var>, given an
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<a for=/>Element</a> <var>element</var>:
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<ol>
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<li><p>Let <var>verifiedValue</var> be the result of calling
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<li><p>Return the result of calling
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<a abstract-op>get Trusted Types-compliant attribute value</a> for <var>attribute</var>, with
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<var>element</var>, <var>value</var>. [[!TRUSTED-TYPES]]
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<li><p>Set <var>attribute</var>'s <a for=Attr>value</a> to <var>verifiedValue</var>.
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</ol>
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<hr>
@@ -6551,6 +6529,11 @@ string <var>namespace</var> (default null):</p>
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<li><p>If <var>oldAttr</var> is <var>attr</var>, return <var>attr</var>.
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<li><p>Let <var>verifiedValue</var> be the result of calling <a>verify attribute value</a>
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<var>attr</var>'s <a for=Attr>value</a> for <var>attr</var>, with <var>element</var>.
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<li><p>Set <var>attr</var>'s <a for=Attr>value</a> to <var>verifiedValue</var>.
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<li><p>If <var>oldAttr</var> is non-null, then <a lt="replace an attribute">replace</a>
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<var>oldAttr</var> with <var>attr</var>.
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@@ -6571,14 +6554,30 @@ or string <var>namespace</var> (default null):
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<a lt="get an attribute by namespace and local name">getting an attribute</a> given
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<var>namespace</var>, <var>localName</var>, and <var>element</var>.
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<li>If <var>attribute</var> is null, create an <a>attribute</a> whose <a for=Attr>namespace</a> is
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<var>namespace</var>, <a for=Attr>namespace prefix</a> is <var>prefix</var>,
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<a for=Attr>local name</a> is <var>localName</var>, <a for=Attr>value</a> is <var>value</var>, and
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<a for=Node>node document</a> is <var>element</var>'s <a for=Node>node document</a>, then
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<a lt="append an attribute">append</a> this <a>attribute</a> to <var>element</var>, and then
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return.
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<li><p>Let <var>attributeExists</var> be false if <var>attribute</var> is null, and true otherwise.
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<li><p>If <var>attributeExists</var> is false, set <var>attribute</var> to an <a>attribute</a>
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whose <a for=Attr>namespace</a> is <var>namespace</var>, <a for=Attr>namespace prefix</a> is
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<var>prefix</var>, <a for=Attr>local name</a> is <var>localName</var>, <a for=Attr>value</a> is
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<var>value</var>, and <a for=Node>node document</a> is <var>element</var>'s <a for=Node>node
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document</a>.
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<li><p><a lt="change an attribute">Change</a> <var>attribute</var> to <var>value</var>.
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<li><p>Let <var>verifiedValue</var> be the result of calling <a>verify attribute value</a>
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<var>value</var> for <var>attribute</var>, with <var>element</var>.
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<li><p>Set <var>attributeExists</var> to true if <var>element</var> <a lt="has an attribute">has
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an attribute</a> <var>attribute</var>; otherwise false.
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<li><p>If <var>attributeExists</var> is true, <a lt="change an attribute">change</a>
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<var>attribute</var> to <var>verifiedValue</var>.
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<li><p>Otherwise:
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<ol>
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<li><p>Set <var>attribute</var>'s <a for=Attr>value</a> to <var>verifiedValue</var>.
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<li><p><a lt="append an attribute">Append</a> this <a>attribute</a> to
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<var>element</var>.
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</ol>
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</ol>
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</div>
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@@ -6839,12 +6838,25 @@ method steps are:
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and null otherwise.
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<!-- This is step 2 of "get an attribute by name", modified as appropriate -->
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<li><p>If <var>attribute</var> is null, create an <a>attribute</a> whose
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<a for=Attr>local name</a> is <var>qualifiedName</var>, <a for=Attr>value</a> is
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<var>value</var>, and <a for=Node>node document</a> is <a>this</a>'s <a for=Node>node document</a>,
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then <a lt="append an attribute">append</a> this <a>attribute</a> to <a>this</a>, and then return.
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<li><p>Let <var>attributeExists</var> be false if <var>attribute</var> is null, and true otherwise.
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<li><p>If <var>attributeExists</var> is false, set <var>attribute</var> to an <a>attribute</a>
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whose <a for=Attr>local name</a> is <var>qualifiedName</var>, <a for=Attr>value</a> is
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<var>value</var>, and <a for=Node>node document</a> is <a>this</a>'s <a for=Node>node
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document</a>.
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<li><p>Let <var>verifiedValue</var> be the result of calling <a>verify attribute value</a>
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<var>value</var> for <var>attribute</var>, with <a>this</a>.
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<li><p><a lt="change an attribute">Change</a> <var>attribute</var> to <var>value</var>.
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<li><p>Set <var>attribute</var>'s <a for=Attr>value</a> to <var>verifiedValue</var>.
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<li><p>Set <var>attributeExists</var> to true if <a>this</a> <a lt="has an attribute">has an
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attribute</a> <var>attribute</var>; otherwise false.
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<li><p>If <var>attributeExists</var> is true, <a lt="change an attribute">change</a>
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<var>attribute</var> to <var>value</var>.
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<li><p>Otherwise <a lt="append an attribute">append</a> this <a>attribute</a> to <a>this</a>.
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</ol>
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<p>The
@@ -7414,7 +7426,13 @@ string <var>value</var>, run these steps:
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<li><p>If <var>attribute</var>'s <a for=Attr>element</a> is null, then set <var>attribute</var>'s
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<a for=Attr>value</a> to <var>value</var>.
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<li><p>Otherwise, <a lt="change an attribute">change</a> <var>attribute</var> to <var>value</var>.
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<li><p>Otherwise:
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<ol>
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<li><p>Let <var>verifiedValue</var> be the result of calling <a>verify attribute value</a>
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<var>value</var> for <var>attribute</var>, with <a>this</a>.
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<li><p><a lt="change an attribute">Change</a> <var>attribute</var> to <var>verifiedValue</var>.
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</ol>
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</ol>
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<p>The {{Attr/value}} setter steps are to <a>set an existing attribute value</a> with <a>this</a>

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