fix($route): fix redirection with optional/eager params

Previously, when (automatically) redirecting from path that fetured a
trailing slash and optional or "eager" parameters, the resulting path
would (incorrectly) contain the special characters (`?`,`*`) along with
the parameter values.

Closes angular#9819

Author: gkalpak

src/ngRoute/route.js

@@ -638,7 +638,7 @@ function $RouteProvider() {
         if (i === 0) {
           result.push(segment);
         } else {
-          var segmentMatch = segment.match(/(\w+)(.*)/);
+          var segmentMatch = segment.match(/(\w+)(?:[?*])?(.*)/);
           var key = segmentMatch[1];
           result.push(params[key]);
           result.push(segmentMatch[2] || '');

test/ngRoute/routeSpec.js

@@ -919,6 +919,29 @@ describe('$route', function() {
     });
 
 
+    it('should properly interpolate optional and eager route vars ' +
+       'when redirecting from path with trailing slash', function() {
+      module(function($routeProvider) {
+        $routeProvider.when('/foo/:id?/:subid?', {templateUrl: 'foo.html'});
+        $routeProvider.when('/bar/:id*/:subid', {templateUrl: 'bar.html'});
+      });
+
+      inject(function($location, $rootScope, $route) {
+        $location.path('/foo/id1/subid2/');
+        $rootScope.$digest();
+
+        expect($location.path()).toEqual('/foo/id1/subid2');
+        expect($route.current.templateUrl).toEqual('foo.html');
+
+        $location.path('/bar/id1/extra/subid2/');
+        $rootScope.$digest();
+
+        expect($location.path()).toEqual('/bar/id1/extra/subid2');
+        expect($route.current.templateUrl).toEqual('bar.html');
+      });
+    });
+
+
     it('should allow custom redirectTo function to be used', function() {
       function customRedirectFn(routePathParams, path, search) {
         expect(routePathParams).toEqual({id: 'id3'});