Re: [w3c/payment-request] Add regionCode attribute (#690)

domenic commented on this pull request.



> @@ -2138,6 +2139,22 @@ <h2>
                 </li>
               </ol>
             </li>
+            <li>If <var>details</var>["<a>regionCode</a>"] is present and not
+            the empty string:
+              <ol>
+                <li>Let <var>regionCode</var> be the result of <a>strip leading
+                and trailing ASCII whitespace</a> and <a data-cite=
+                "!INFRA#ascii-uppercase">ASCII uppercasing</a>
+                <var>details</var>["<a>regionCode</a>"].
+                </li>
+                <li>If <var>regionCode</var> is not a valid [[!ISO3166-2]]
+                subdivision code, throw a <a>RangeError</a> exception.

Hmm. I guess 1 is good. I was going to say 2 was nice because then you don't have to pay for ISO3166-2 to implement this spec, but it turns out you would still have to do so for your step 7, so let's just stick with 1.

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