From 7fb766560880ea410e10fb9d60fb2cb387199fe1 Mon Sep 17 00:00:00 2001
From: "C. Scott Ananian" <cscott@cscott.net>
Date: Tue, 27 Aug 2013 09:34:55 -0400
Subject: [PATCH] Avoid crash after ve.dm.Surface.purgeHistory().

The selection property is never null; it is initialized to Range(0,0).
If it is set to null in purgeHistory(), the next call to
ve.dm.Surface.change() will crash.

Change-Id: Ia45c0ba26291e8ad09c445fdf2323710b5ab409f
---
 modules/ve/dm/ve.dm.Surface.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/ve/dm/ve.dm.Surface.js b/modules/ve/dm/ve.dm.Surface.js
index c8dfc1ddb0..db27b5ac11 100644
--- a/modules/ve/dm/ve.dm.Surface.js
+++ b/modules/ve/dm/ve.dm.Surface.js
@@ -125,7 +125,7 @@ ve.dm.Surface.prototype.purgeHistory = function () {
 	if ( !this.enabled ) {
 		return;
 	}
-	this.selection = null;
+	this.selection = new ve.Range( 0, 0 );
 	this.smallStack = [];
 	this.bigStack = [];
 	this.undoIndex = 0;