From fed37fcc829903c57319dbaa34fe33609c022448 Mon Sep 17 00:00:00 2001
From: David Lynch <dlynch@wikimedia.org>
Date: Fri, 31 Mar 2023 00:18:28 -0500
Subject: [PATCH] preloadparams on other platforms supports numbered indexes

Change-Id: I4f1f5e8758007ab95e342ad5429c909f495d8deb
---
 extension.json                  | 1 +
 modules/ReplyLinksController.js | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/extension.json b/extension.json
index 1ad7ed0f5..7a9d9d481 100644
--- a/extension.json
+++ b/extension.json
@@ -97,6 +97,7 @@
 				"oojs-ui-windows",
 				"mediawiki.api",
 				"mediawiki.Title",
+				"mediawiki.Uri",
 				"mediawiki.util",
 				"mediawiki.storage",
 				"mediawiki.String",
diff --git a/modules/ReplyLinksController.js b/modules/ReplyLinksController.js
index ad383832e..60f6de5f2 100644
--- a/modules/ReplyLinksController.js
+++ b/modules/ReplyLinksController.js
@@ -174,7 +174,8 @@ ReplyLinksController.prototype.parseNewTopicLink = function ( href ) {
 		data.preload = url.searchParams.get( 'preload' );
 	}
 	if ( url.searchParams.getAll( 'preloadparams[]' ).length ) {
-		data.preloadparams = url.searchParams.getAll( 'preloadparams[]' );
+		// Handle numbered array parameters like MediaWiki's PHP code does (T231382)
+		data.preloadparams = new mw.Uri( url.toString(), { arrayParams: true } ).query.preloadparams;
 	}
 	if ( url.searchParams.get( 'preloadtitle' ) ) {
 		data.preloadtitle = url.searchParams.get( 'preloadtitle' );