From 5ee22c30f62082bd1aa5e34e690e9cd2d2fc2090 Mon Sep 17 00:00:00 2001
From: setnes <kristopher@setnes.net>
Date: Sat, 7 Nov 2015 22:14:47 -0600
Subject: [PATCH] If there is no browser history, exit the slideshow by calling
 stop.

---
 js/slideshowcontrols.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/slideshowcontrols.js b/js/slideshowcontrols.js
index 3dead6e2e9..b0553d3b0b 100644
--- a/js/slideshowcontrols.js
+++ b/js/slideshowcontrols.js
@@ -347,11 +347,11 @@
 		_exit: function () {
 
 			// Only modern browsers can manipulate history
-			if (history && history.replaceState) {
+			if (history && history.replaceState && window.history.length > 1) {
 				// We simulate a click on the back button in order to be consistent
 				window.history.back();
 			} else {
-				// For ancient browsers supported in core
+				// There is no history to go back to.
 				this.stop();
 			}
 		},