Re: [heycam/webidl] Added a definition of {{StringContext}} extended attribute. (#841)

koto commented on this pull request.



> @@ -10496,6 +10504,40 @@ that does specify [{{SecureContext}}].
     </pre>
 </div>
 
+<h4 id="StringContext" extended-attribute lt="StringContext">[StringContext]</h4>
+
+If the [{{StringContext}}] [=extended attribute=] appears on {{DOMString}} or {{USVString}}, it
+modifies how the value is converted to the IDL type, causing additional value validation to
+adhere to the context the string is used in.
+
+The [{{StringContext}}] extended attribute must [=takes an identifier|take an identifier=]. The [=identifier=]
+must be one of "<code>html</code>", "<code>script-url</code>" and "<code>script</code>".
+
+A type annotated with the [{{StringContext}}] extended attribute must not appear in a construct
+that is not a [=regular attribute=] or a [=regular operation=]. A type annotated with the [{{StringContext}}]

I updated the PR such that "the intent is to limit this thing to types of attributes and operation arguments" is explicit.

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