From 69c2da0dd4e35642ec4fde1038774b7da4beb4c3 Mon Sep 17 00:00:00 2001
From: rebornix <penn.lv@gmail.com>
Date: Wed, 1 Jul 2020 14:38:33 -0700
Subject: [PATCH] avoid revert if it is not dirty

---
 .../workbench/contrib/notebook/browser/notebookEditorInput.ts   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vs/workbench/contrib/notebook/browser/notebookEditorInput.ts b/src/vs/workbench/contrib/notebook/browser/notebookEditorInput.ts
index 382fce7d995..8dfb595f64c 100644
--- a/src/vs/workbench/contrib/notebook/browser/notebookEditorInput.ts
+++ b/src/vs/workbench/contrib/notebook/browser/notebookEditorInput.ts
@@ -133,7 +133,7 @@ export class NotebookEditorInput extends EditorInput {
 	}
 
 	async revert(group: GroupIdentifier, options?: IRevertOptions): Promise<void> {
-		if (this._textModel) {
+		if (this._textModel && this._textModel.object.isDirty()) {
 			await this._textModel.object.revert(options);
 		}