fix back button on default route trigger

api/router.js

@@ -22,8 +22,8 @@ module.exports = function($window, renderer, pubsub) {
 			else {
 				renderer.render(root, Node(payload, null, args, undefined, undefined, undefined))
 			}
-		}, function() {
+		}, function(path, params) {
-			router.setPath(defaultRoute)
+			router.setPath(defaultRoute, null, {replace: true})
 		})
 		autoredraw(root, renderer, pubsub, replay)
 	}

api/tests/test-router.js

@@ -49,6 +49,45 @@ o.spec("route", function() {
 				})
 			})
 
+			o("default route doesn't break back button", function(done) {
+				$window.location.href = "http://google.com"
+				route(root, "/a", {
+					"/a" : {
+						view: function() {
+							return m("div")
+						}
+					}
+				})
+
+				setTimeout(function() {
+					o(root.firstChild.nodeName).equals("DIV")
+					
+					$window.history.back()
+					
+					o($window.location.pathname).equals("/")
+					
+					done()
+				}, FRAME_BUDGET)
+			})
+
+			o("default route does not inherit params", function(done) {
+				$window.location.href = "/invalid?foo=bar"
+				route(root, "/a", {
+					"/a" : {
+						oninit: init,
+						view: function() {
+							return m("div")
+						}
+					}
+				})
+
+				function init(vnode) {
+					o(vnode.attrs).deepEquals({})
+					
+					done()
+				}
+			})
+
 			o("redraws when render function is executed", function(done) {
 				var onupdate = o.spy()
 				var oninit = o.spy()