From a5083741c45791e058b450874509b6e7b63ef15f Mon Sep 17 00:00:00 2001
From: Anibal Svarcas <anibal@marmelab.com>
Date: Tue, 31 Mar 2026 10:36:26 -0300
Subject: [PATCH] Escape backslashes in escapePath

---
 packages/ra-core/src/util/escapePath.spec.ts | 13 +++++++++++++
 packages/ra-core/src/util/escapePath.ts      |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 packages/ra-core/src/util/escapePath.spec.ts

diff --git a/packages/ra-core/src/util/escapePath.spec.ts b/packages/ra-core/src/util/escapePath.spec.ts
new file mode 100644
index 00000000000..9b00e27f94c
--- /dev/null
+++ b/packages/ra-core/src/util/escapePath.spec.ts
@@ -0,0 +1,13 @@
+import expect from 'expect';
+
+import escapePath from './escapePath';
+
+describe('escapePath', () => {
+    it('escapes parentheses', () => {
+        expect(escapePath('/foo(bar)')).toEqual('/foo\\(bar\\)');
+    });
+
+    it('escapes backslashes before escaping parentheses', () => {
+        expect(escapePath('/foo\\(bar)')).toEqual('/foo\\\\\\(bar\\)');
+    });
+});
diff --git a/packages/ra-core/src/util/escapePath.ts b/packages/ra-core/src/util/escapePath.ts
index 26ebaa63746..8c5d09278eb 100644
--- a/packages/ra-core/src/util/escapePath.ts
+++ b/packages/ra-core/src/util/escapePath.ts
@@ -7,4 +7,4 @@
  *
  * escapePath('/foo(bar)') => 'foo\(bar\)'
  */
-export default url => url.replace(/(\(|\))/g, '\\$1');
+export default url => url.replace(/\\/g, '\\\\').replace(/[()]/g, '\\$&');