From aa5099c771f4a086d97c1dfdc4776dc797935828 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20P=C3=A9ters?= <fpeters@entrouvert.com>
Date: Sat, 11 Jan 2020 20:27:32 +0100
Subject: [PATCH] general: only apply accessible foldable support once (#38900)

---
 combo/public/static/js/combo.public.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/combo/public/static/js/combo.public.js b/combo/public/static/js/combo.public.js
index 05b05642..0780b223 100644
--- a/combo/public/static/js/combo.public.js
+++ b/combo/public/static/js/combo.public.js
@@ -220,6 +220,9 @@ $(function() {
       return;
     }
     var $cell_title = $cell.find('> div > h2:first-child');
+    if ($cell_title.attr('aria-expanded') !== undefined) {  // already prepared
+      return;
+    }
     $cell_title.attr('tabindex', '0');
     $cell_title.attr('role', 'button');
     function set_aria_expanded() {