From c7baa96f97b09aa4972955916ed189f9f4152d4c Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Mon, 25 May 2026 17:39:23 -0700
Subject: [PATCH] fix(addon-search): ignore zero-length matches in reverse
 regex search

Skip empty regex matches in the reverse path to match forward behavior and
avoid unstable result selection.

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 addons/addon-search/src/SearchEngine.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/addons/addon-search/src/SearchEngine.ts b/addons/addon-search/src/SearchEngine.ts
index 515720a31..22b3d8d2e 100644
--- a/addons/addon-search/src/SearchEngine.ts
+++ b/addons/addon-search/src/SearchEngine.ts
@@ -289,6 +289,9 @@ export class SearchEngine {
       if (isReverseSearch) {
         // This loop will get the resultIndex of the _last_ regex match in the range 0..offset
         while (foundTerm = searchRegex.exec(searchStringLine.slice(0, offset))) {
+          if (foundTerm[0].length === 0) {
+            continue;
+          }
           resultIndex = searchRegex.lastIndex - foundTerm[0].length;
           term = foundTerm[0];
           searchRegex.lastIndex -= (term.length - 1);