debug

diff --git a/src/Notebook/SALOME_EvalExpr.cxx b/src/Notebook/SALOME_EvalExpr.cxx
index 667f9104468c28567d583c08482798e3fb7f6a25..56b37e44fff5710e2d07ba6cd8a2de29703ea6ff 100755 (executable)
--- a/src/Notebook/SALOME_EvalExpr.cxx
+++ b/src/Notebook/SALOME_EvalExpr.cxx
@@ -82,7 +82,8 @@ void SALOME_EvalExpr::initialize( const SALOME_String& theExpr, const bool isStd
 //=======================================================================
 SALOME_EvalVariant SALOME_EvalExpr::calculate( const SALOME_String& theExpr )
 {
-  setExpression( theExpr );
+  if( theExpr.length() > 0 )
+    setExpression( theExpr );
   return myParser->calculate();
 }