From 46608ba61d4b0f1e7c5589db7df2a2136e1bfc8f Mon Sep 17 00:00:00 2001
From: Alex Hill <alex@hill.net.au>
Date: Thu, 5 Jun 2014 10:49:05 +0800
Subject: [PATCH 1/2] Only set pjax.state if pushing or replacing

---
 jquery.pjax.js | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/jquery.pjax.js b/jquery.pjax.js
index 0a9cb1e1..caac14f6 100644
--- a/jquery.pjax.js
+++ b/jquery.pjax.js
@@ -253,16 +253,15 @@ function pjax(options) {
       return
     }
 
-    pjax.state = {
-      id: options.id || uniqueId(),
-      url: container.url,
-      title: container.title,
-      container: context.selector,
-      fragment: options.fragment,
-      timeout: options.timeout
-    }
-
     if (options.push || options.replace) {
+      pjax.state = {
+        id: options.id || uniqueId(),
+        url: container.url,
+        title: container.title,
+        container: context.selector,
+        fragment: options.fragment,
+        timeout: options.timeout
+      }
       window.history.replaceState(pjax.state, container.title, container.url)
     }
 
@@ -318,7 +317,7 @@ function pjax(options) {
   // using the container and options of the link we're loading for the
   // back button to the initial page. This ensures good back button
   // behavior.
-  if (!pjax.state) {
+  if ((options.push || options.replace) && !pjax.state) {
     pjax.state = {
       id: uniqueId(),
       url: window.location.href,

From 170dcc3a66053912de93edd536074cd3715e0ee5 Mon Sep 17 00:00:00 2001
From: Alex Hill <alex@hill.net.au>
Date: Thu, 5 Jun 2014 11:25:17 +0800
Subject: [PATCH 2/2] Set options.replace true in popstate handler

---
 jquery.pjax.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jquery.pjax.js b/jquery.pjax.js
index caac14f6..f2d37026 100644
--- a/jquery.pjax.js
+++ b/jquery.pjax.js
@@ -252,7 +252,6 @@ function pjax(options) {
       locationReplace(container.url)
       return
     }
-
     if (options.push || options.replace) {
       pjax.state = {
         id: options.id || uniqueId(),
@@ -438,6 +437,7 @@ function onPjaxPopstate(event) {
         url: state.url,
         container: container,
         push: false,
+        replace: true,
         fragment: state.fragment,
         timeout: state.timeout,
         scrollTo: false