From 7ec083e4265672ca1e616af283c237493302c95e Mon Sep 17 00:00:00 2001
From: Michael Howell <michael@notriddle.com>
Date: Tue, 8 Jul 2025 09:37:04 -0700
Subject: [PATCH] Work around compat break in old index.hbs templates with new
 searcher.js

Problem reported in

https://github.com/rust-lang/mdBook/pull/2742#discussion_r2190930557
---
 src/front-end/searcher/searcher.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/front-end/searcher/searcher.js b/src/front-end/searcher/searcher.js
index 17af071aec..18daa6e239 100644
--- a/src/front-end/searcher/searcher.js
+++ b/src/front-end/searcher/searcher.js
@@ -434,7 +434,10 @@ window.search = window.search || {};
 
     function showSearch(yes) {
         if (yes) {
-            loadSearchScript(window.path_to_searchindex_js, 'search-index');
+            loadSearchScript(
+                window.path_to_searchindex_js ||
+                path_to_root + '{{ resource "searchindex.js" }}',
+                'search-index');
             search_wrap.classList.remove('hidden');
             searchicon.setAttribute('aria-expanded', 'true');
         } else {