From de9a361ffea2dd7bd61e31ee7764fc5632fd573d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartosz=20Dziewo=C5=84ski?= <matma.rex@gmail.com>
Date: Mon, 2 Mar 2020 17:08:15 +0100
Subject: [PATCH] jquery.makeCollapsible: Escape user-generated CSS selectors

Bug: T246602
Change-Id: Iea64a258499ab597b9a8900418a42162fdb5f391
---
 resources/src/jquery/jquery.makeCollapsible.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/resources/src/jquery/jquery.makeCollapsible.js b/resources/src/jquery/jquery.makeCollapsible.js
index de307a69d9..32a5d3de72 100644
--- a/resources/src/jquery/jquery.makeCollapsible.js
+++ b/resources/src/jquery/jquery.makeCollapsible.js
@@ -243,6 +243,7 @@
 			} else {
 				collapsibleId = $collapsible.attr( 'id' ) || '';
 				if ( collapsibleId.indexOf( 'mw-customcollapsible-' ) === 0 ) {
+					collapsibleId = $.escapeSelector( collapsibleId );
 					$customTogglers = $( '.' + collapsibleId.replace( 'mw-customcollapsible', 'mw-customtoggle' ) )
 						.addClass( 'mw-customtoggle' );
 				}
-- 
2.17.1.windows.2