From 84ac77971b79a908e0ef10de0a3cbc1805901d7d Mon Sep 17 00:00:00 2001
From: leo <longshuang@msn.cn>
Date: Fri, 28 Oct 2022 09:57:50 +0800
Subject: [PATCH] optimize<WorkingCopy>: do not re-diff when file not changed

---
 src/Views/Widgets/DiffViewer.xaml.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Views/Widgets/DiffViewer.xaml.cs b/src/Views/Widgets/DiffViewer.xaml.cs
index 33871fff..0bb091ec 100644
--- a/src/Views/Widgets/DiffViewer.xaml.cs
+++ b/src/Views/Widgets/DiffViewer.xaml.cs
@@ -69,7 +69,9 @@ namespace SourceGit.Views.Widgets {
                     if (wcFileID == lastWCFileId) return;
                     lastWCFileId = wcFileID;
                 } else {
-                    lastWCFileId = "";
+                    var wcFileID = string.Format("{0}@-1", opt.Path);
+                    if (wcFileID == lastWCFileId) return;
+                    lastWCFileId = wcFileID;
                 }
             } else {
                 lastWCFileId = "";