JAL-2001 catch -ve column values

(fixes failing test jalview.util.MappingUtilsTest.testMapColumnSelection)

diff --git a/src/jalview/datamodel/ColumnSelection.java b/src/jalview/datamodel/ColumnSelection.java
index cfe4685..c891485 100644 (file)
--- a/src/jalview/datamodel/ColumnSelection.java
+++ b/src/jalview/datamodel/ColumnSelection.java
@@ -263,7 +263,7 @@ public class ColumnSelection
    */
   public boolean contains(int col)
   {
-    return selected.isSelected(col);
+    return (col > -1) ? selected.isSelected(col) : false;
   }
 
   /**