From 8f5833061e23757b7d36fd0e158e0bef0d93b5ac Mon Sep 17 00:00:00 2001
From: Tom Najdek <tom@doppnet.com>
Date: Tue, 9 Jun 2026 17:34:59 +0200
Subject: [PATCH] Clear undo/redo history when emptying the trash

---
 chrome/content/zotero/zoteroPane.js |  1 +
 test/tests/zoteroPaneTest.js        | 27 +++++++++++++++++++++++++--
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/chrome/content/zotero/zoteroPane.js b/chrome/content/zotero/zoteroPane.js
index 027d0feef0..2a1b1adf27 100644
--- a/chrome/content/zotero/zoteroPane.js
+++ b/chrome/content/zotero/zoteroPane.js
@@ -2562,6 +2562,7 @@ var ZoteroPane = new function () {
 				Zotero.hideZoteroPaneOverlays();
 			}
 			await Zotero.purgeDataObjects();
+			Zotero.UndoHistory.clear();
 		}
 	};
 	
diff --git a/test/tests/zoteroPaneTest.js b/test/tests/zoteroPaneTest.js
index b4fe9b147e..6422068855 100644
--- a/test/tests/zoteroPaneTest.js
+++ b/test/tests/zoteroPaneTest.js
@@ -862,8 +862,31 @@ describe("ZoteroPane", function () {
 			assert.isTrue(item.deleted);
 		});
 	});
-	
-	
+
+
+	describe("#emptyTrash()", function () {
+		it("should clear the undo/redo history", async function () {
+			// Record an undo entry
+			Zotero.UndoHistory.clear();
+			var collection = await createDataObject('collection', { name: 'Original' });
+			collection.name = 'Renamed';
+			await collection.saveTx({ undoAction: 'undo-action-rename-collection' });
+			assert.isTrue(Zotero.UndoHistory.canUndo());
+
+			// Put something in the trash to empty
+			await createDataObject('item', { deleted: true });
+
+			await selectTrash(win);
+			var promise = waitForDialog();
+			await zp.emptyTrash();
+			await promise;
+
+			assert.isFalse(Zotero.UndoHistory.canUndo());
+			assert.isFalse(Zotero.UndoHistory.canRedo());
+		});
+	});
+
+
 	describe("#setVirtual()", function () {
 		var cv;