From 303c65f2c39e945a16b4ad4dc764a2ef6bb50443 Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Mon, 7 Nov 2016 11:20:30 +0100
Subject: [PATCH] use replaceState if available, instead of setting the hash

---
 www/code/main.js              | 4 +---
 www/common/cryptpad-common.js | 8 ++++++++
 www/pad/main.js               | 4 +---
 www/poll/main.js              | 4 +---
 www/slide/main.js             | 2 +-
 5 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/www/code/main.js b/www/code/main.js
index ee4fd2f0f..a12d4bb8c 100644
--- a/www/code/main.js
+++ b/www/code/main.js
@@ -495,9 +495,7 @@ define([
                 }
 
                 // set the hash
-                if (!readOnly) {
-                    window.location.hash = editHash;
-                }
+                if (!readOnly) { Cryptpad.setHash(editHash); }
 
                 Cryptpad.getPadTitle(function (err, title) {
                     if (err) {
diff --git a/www/common/cryptpad-common.js b/www/common/cryptpad-common.js
index d28b1e5e5..85f07234c 100644
--- a/www/common/cryptpad-common.js
+++ b/www/common/cryptpad-common.js
@@ -225,6 +225,14 @@ define([
         return secret;
     };
 
+    var setHash = common.setHash = function (hash) {
+        if (!/^#/.test(hash)) { hash = '#' + hash; }
+        if (window.history && window.history.replaceState) {
+            return void window.history.replaceState({}, window.document.title, hash);
+        }
+        window.location.hash = hash;
+    };
+
     var storageKey = common.storageKey = 'CryptPad_RECENTPADS';
 
     /*
diff --git a/www/pad/main.js b/www/pad/main.js
index 310a3d353..c55370771 100644
--- a/www/pad/main.js
+++ b/www/pad/main.js
@@ -601,9 +601,7 @@ define([
                 }
 
                 // set the hash
-                if (!readOnly) {
-                    window.location.hash = editHash;
-                }
+                if (!readOnly) { Cryptpad.setHash(editHash); }
 
                 Cryptpad.getPadTitle(function (err, title) {
                     if (err) {
diff --git a/www/poll/main.js b/www/poll/main.js
index ac238e36d..1caa10793 100644
--- a/www/poll/main.js
+++ b/www/poll/main.js
@@ -914,9 +914,7 @@ define([
                 editHash = Cryptpad.getEditHashFromKeys(info.channel, secret.keys);
             }
             // set the hash
-            if (!readOnly) {
-                window.location.hash = editHash;
-            }
+            if (!readOnly) { Cryptpad.setHash(editHash); }
 
             module.patchText = TextPatcher.create({
                 realtime: realtime,
diff --git a/www/slide/main.js b/www/slide/main.js
index 91a174d0f..3efb9bd45 100644
--- a/www/slide/main.js
+++ b/www/slide/main.js
@@ -585,7 +585,7 @@ define([
 
                 // set the hash
                 if (!window.location.hash || window.location.hash === '#') {
-                    window.location.hash = editHash;
+                    Cryptpad.setHash(editHash);
                 }
 
                 Cryptpad.getPadTitle(function (err, title) {