Check for empty history in setSelectionAddToHistory

Issue #1961
codemirror · Nov 25, 2013 · cf2dc20 · cf2dc20
1 parent ab4ef60
commit cf2dc20
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/codemirror.js b/lib/codemirror.js
@@ -2717,7 +2717,8 @@
 
   function setSelectionAddToHistory(doc, sel) {
     setSelection(doc, sel);
-    lst(doc.history.done).selAfter = sel;
+    var lstSel = lst(doc.history.done);
+    if (lstSel) lstSel.selAfter = sel;
   }
 
   function filterSelectionChange(doc, sel) {