From a028dff6e92dc6887e125e57e4030ce058f191bf Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Fri, 26 Apr 2013 18:09:23 -0600
Subject: [PATCH] Add DisplayBufferMarker.isValid

---
 src/app/display-buffer-marker.coffee | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/app/display-buffer-marker.coffee b/src/app/display-buffer-marker.coffee
index 0e318bd71..5027441f7 100644
--- a/src/app/display-buffer-marker.coffee
+++ b/src/app/display-buffer-marker.coffee
@@ -131,6 +131,9 @@ class DisplayBufferMarker
   isReversed: ->
     @bufferMarker.isReversed()
 
+  isValid: ->
+    @bufferMarker.isValid()
+
   destroy: ->
     delete @displayBuffer.markers[@id]
     @bufferMarker.destroy()