Fixed updating URL with uri-decoded value

backbone.js

@@ -1814,11 +1814,14 @@
       }
       var url = rootPath + fragment;
 
-      // Strip the hash and decode for matching.
-      fragment = this.decodeFragment(fragment.replace(pathStripper, ''));
+      // Strip the fragment of the query and hash for matching.
+      fragment = fragment.replace(pathStripper, '');
 
-      if (this.fragment === fragment) return;
-      this.fragment = fragment;
+      // Decode for matching.
+      var decodedFragment = this.decodeFragment(fragment);
+
+      if (this.fragment === decodedFragment) return;
+      this.fragment = decodedFragment;
 
       // If pushState is available, we use it to set the fragment as a real URL.
       if (this._usePushState) {

test/router.js

@@ -1059,4 +1059,11 @@
     Backbone.history.start({root: '®ooτ', pushState: true});
   });
 
+  QUnit.test('#4025 - navigate updates URL hash as is', function(assert) {
+    assert.expect(1);
+    var route = 'search/has%20space';
+    Backbone.history.navigate(route);
+    assert.strictEqual(location.hash, '#' + route);
+  });
+
 })();