From 913150fe13ff45379accd92d67dc71ebf54d4f98 Mon Sep 17 00:00:00 2001
From: ntchjb <ntch.jai@gmail.com>
Date: Sat, 29 Dec 2018 03:03:23 +0700
Subject: [PATCH] Fix search addons: searchTerm should not be matched if the
 beginning of matching index < 0

---
 src/addons/search/SearchHelper.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/addons/search/SearchHelper.ts b/src/addons/search/SearchHelper.ts
index 42a3a122..96cd845d 100644
--- a/src/addons/search/SearchHelper.ts
+++ b/src/addons/search/SearchHelper.ts
@@ -222,7 +222,9 @@ export class SearchHelper implements ISearchHelper {
       }
     } else {
       if (isReverseSearch) {
-        resultIndex = searchStringLine.lastIndexOf(searchTerm, col - searchTerm.length);
+        if (col - searchTerm.length >= 0) {
+          resultIndex = searchStringLine.lastIndexOf(searchTerm, col - searchTerm.length);
+        }
       } else {
         resultIndex = searchStringLine.indexOf(searchTerm, col);
       }