From 0ba72788b3652790da6e37b1d533cfc5d79ad176 Mon Sep 17 00:00:00 2001
From: mkslanc <mkslanc@gmail.com>
Date: Sun, 29 Dec 2024 18:55:56 +0400
Subject: [PATCH] fix: rare bug with not added fold

---
 diff0/twoway.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/diff0/twoway.js b/diff0/twoway.js
index 188618e7a5..3f531446cd 100644
--- a/diff0/twoway.js
+++ b/diff0/twoway.js
@@ -120,8 +120,10 @@ class DiffView {
                 var f1 = this.orig.session.addFold(sep, new Range(s, 0, s + l, Number.MAX_VALUE));
                 s = prev.new.end.row + 2;
                 var f2 = this.edit.session.addFold(sep, new Range(s, 0, s + l, Number.MAX_VALUE));
-                f1.other = f2;
-                f2.other = f1;
+                if (f2 && f1) {
+                    f1.other = f2;
+                    f2.other = f1;
+                }
             }
 
             prev = current;