From cf86f6848f8ec9e53c5e9f2850762451b054460f Mon Sep 17 00:00:00 2001
From: Zachary Yedidia <zyedidia@gmail.com>
Date: Sat, 4 Jul 2020 20:09:44 -0400
Subject: [PATCH] Don't set fastdirty base if modified

---
 internal/buffer/settings.go | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/internal/buffer/settings.go b/internal/buffer/settings.go
index 156d842f..e04d7061 100644
--- a/internal/buffer/settings.go
+++ b/internal/buffer/settings.go
@@ -10,9 +10,11 @@ func (b *Buffer) SetOptionNative(option string, nativeValue interface{}) error {
 
 	if option == "fastdirty" {
 		if !nativeValue.(bool) {
-			e := calcHash(b, &b.origHash)
-			if e == ErrFileTooLarge {
-				b.Settings["fastdirty"] = false
+			if !b.Modified() {
+				e := calcHash(b, &b.origHash)
+				if e == ErrFileTooLarge {
+					b.Settings["fastdirty"] = false
+				}
 			}
 		}
 	} else if option == "statusline" {