X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FCigarBase.java;h=df6f5f3c64ec904e5ea2b1f5b6f3348e3ef7d002;hb=d3ad666c751eead380676d1c6bf08f7e66f70628;hp=2508717e08e476530fbf9be38e73d9bbb3ecde17;hpb=153dd62dc91da13ae732600e6ea55ddbe15eab39;p=jalview.git

diff --git a/src/jalview/datamodel/CigarBase.java b/src/jalview/datamodel/CigarBase.java
index 2508717..df6f5f3 100644
--- a/src/jalview/datamodel/CigarBase.java
+++ b/src/jalview/datamodel/CigarBase.java
@@ -1,6 +1,6 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.6)
- * Copyright (C) 2010 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.7)
+ * Copyright (C) 2011 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
  * 
  * This file is part of Jalview.
  * 
@@ -268,10 +268,14 @@ public abstract class CigarBase
     {
       throw new Error("Implementation error. Invalid operation string.");
     }
-    if (range <= 0)
+    if (range==0)
+    {
+      return; // No Operation to add.
+    }
+    if (range < 0)
     {
       throw new Error(
-              "Invalid range string (must be non-zero positive number)");
+              "Invalid range string (must be zero or positive number)");
     }
     int lngth = 0;
     if (operation == null)