From f21b85e34eaa2597b738f27bb285a7ee1884e55a Mon Sep 17 00:00:00 2001
From: Demian Katz <demian.katz@villanova.edu>
Date: Thu, 16 Jan 2025 10:52:18 -0500
Subject: [PATCH] Add comment.

---
 themes/bootstrap3/js/facets.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/themes/bootstrap3/js/facets.js b/themes/bootstrap3/js/facets.js
index 86e3a94d7cb..1bbd0475ef2 100644
--- a/themes/bootstrap3/js/facets.js
+++ b/themes/bootstrap3/js/facets.js
@@ -171,6 +171,8 @@ VuFind.register('multiFacetsSelection', function multiFacetsSelection() {
    * @returns string
    */
   function normalizeSearchQueryKey(key) {
+    // Advanced search parameters could take one of two forms -- e.g. lookfor0[] or lookfor0[0]; this
+    // regular expression normalizes them to the more common non-indexed form for uniform comparisons.
     return key.replace(/(bool|lookfor|type)(\d+)\[\d+\]/, '$1$2[]');
   }