From cc972c1acd8dd60a21bd1a4c01598bafd4f45e3c Mon Sep 17 00:00:00 2001
From: JC-Chung <52159296+JC-Chung@users.noreply.github.com>
Date: Fri, 31 Jul 2026 11:26:19 +0800
Subject: [PATCH] fix: off-by-one in commit message subject length calculation

---
 src/Views/CommitMessageToolBox.axaml.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Views/CommitMessageToolBox.axaml.cs b/src/Views/CommitMessageToolBox.axaml.cs
index 214f7fd8b..90128444f 100644
--- a/src/Views/CommitMessageToolBox.axaml.cs
+++ b/src/Views/CommitMessageToolBox.axaml.cs
@@ -243,7 +243,7 @@ protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs chang
                     }
                 }
 
-                if (lastLineStart < lastNonLineBreakCharIdx)
+                if (lastLineStart <= lastNonLineBreakCharIdx)
                 {
                     var validCharLen = text.Substring(lastLineStart).TrimEnd().Length;
                     if (subjectLen > 0)