Fix resolving search results title

CHANGELOG.md

@@ -32,6 +32,10 @@ All notable changes to this project will be documented in this file. Take a look
 
 ### Fixed
 
+#### Shared
+
+* [#444](https://github.com/readium/swift-toolkit/issues/444) Fixed resolving titles of search results when the table of contents items contain fragment identifiers.
+
 #### Navigator
 
 * Optimized scrolling to an EPUB text-based locator if it contains a CSS selector.

Sources/Internal/Extensions/String.swift

@@ -67,7 +67,7 @@ public extension String {
         guard let range = range(of: delimiter, options: [.backwards, .literal]) else {
             return self
         }
-        return String(self[...range.lowerBound])
+        return String(self[..<range.lowerBound])
     }
 
     /// Replaces multiple whitespaces by a single space.

Tests/InternalTests/Extensions/StringTests.swift

@@ -0,0 +1,17 @@
+//
+//  Copyright 2024 Readium Foundation. All rights reserved.
+//  Use of this source code is governed by the BSD-style license
+//  available in the top-level LICENSE file of the project.
+//
+
+import Foundation
+@testable import ReadiumInternal
+import XCTest
+
+class StringTests: XCTestCase {
+    func testSubstringBeforeLast() {
+        XCTAssertEqual("href".substringBeforeLast("#"), "href")
+        XCTAssertEqual("href#anchor".substringBeforeLast("#"), "href")
+        XCTAssertEqual("href#anchor#test".substringBeforeLast("#"), "href#anchor")
+    }
+}