[urlpattern] Fix unexpected stripping of default port substrings during compilation whatwg/urlpattern@aeb2019

Author: triple-underscore

urlpattern-ja.html

@@ -123,8 +123,8 @@
 ●●options
 
 spec_title:URL
-spec_date:2026-03-20
-trans_update:2026-03-20
+spec_date:2026-06-15
+trans_update:2026-06-17
 source_checked:250812
 spec_status:LS
 original_url:https://urlpattern.spec.whatwg.org/
@@ -953,7 +953,7 @@
 	<a href="https://whatwg.org/chat">Chat on Matrix</a>
 Commits:
 	<a href="https://github.com/whatwg/urlpattern/commits">GitHub whatwg/urlpattern/commits</a>
-	<a href="/commit-snapshots/203d435c32272a10bdccc2c6dfa8a51ee5c6b92c/" id="commit-snapshot-link">Snapshot as of this commit</a>
+	<a href="/commit-snapshots/aeb2019cf3aa1fb31af134a682c0255302a41297/" id="commit-snapshot-link">Snapshot as of this commit</a>
 	<a href="https://twitter.com/urlpatterns">@urlpatterns</a>
 Tests:
 	<a href="https://github.com/web-platform-tests/wpt/tree/master/urlpattern">web-platform-tests urlpattern/</a> (<a href="https://github.com/web-platform-tests/wpt/labels/urlpattern">ongoing work</a>)
@@ -8733,23 +8733,25 @@ <h3 title="Encoding callbacks">3.1. 符号化~callback</h3>
 </li>
 	<li>
 <p>
-~IF［
-%~protocol値 ~NEQ ε
-］
-⇒
-%~dummy~URL の`~scheme$url ~SET %~protocol値
-◎
-If protocolValue was given, then set dummyURL’s scheme to protocolValue.
+%~dummy~URL の`~scheme$url ~SET %~protocol値 に応じて
+⇒＃
+ε ならば空~文字列 ／
+~ELSE_ %~protocol値
 </p>
 
 <p class="note">注記：
 ここで`~scheme$urlを設定するのは、［
 `基本~URL構文解析器$が`既定~port$を認識して正規化する
 ］ようにするためである。
+</p>
+
+◎
+If protocolValue was given, then set dummyURL’s scheme to protocolValue.
 ◎
 Note, we set the URL record’s scheme in order for the basic URL parser to recognize and normalize default port values.
-</p>
-	</li>
+◎
+Otherwise, set dummyURL’s scheme to the empty string.
+</li>
 	<li>
 %構文解析-結果 ~LET `~API用に~URL構文解析する$( %~port値, %~dummy~URL, `~port$st )
 ◎