--- sc/source/ui/view/tabvwsha.cxx	2005-10-17 23:13:34.000000000 +0530
+++ sc/source/ui/view/tabvwsha.cxx	2006-10-30 19:49:06.871771480 +0530
@@ -497,7 +497,44 @@ void ScTabViewShell::ExecuteCellFormatDl
 void ScTabViewShell::ExecuteInputDirect()
 {
 	ScModule* pScMod = SC_MOD();
-	if( !pScMod->IsFormulaMode() )
+	BOOL bCallInputHandler = TRUE;
+	
+	if( pScMod->IsFormulaMode() )
+	{
+		ScInputHandler *pHdl = pScMod->GetInputHdl();
+		String sString = pHdl->GetEditString();
+		bCallInputHandler = FALSE;
+
+		if(!pHdl->GetSelIsRef() && sString.Len() > 1)
+		{
+			switch(sString.GetChar(0))
+			{
+				case '+':
+				case '-':
+				case '=':
+					{
+						ScViewData *pViewData = GetViewData();
+						ScDocument *pDoc = pViewData->GetDocument();
+						ScAddress aPos(pViewData->GetCurPos());
+						ScFormulaCell* pFCell = new ScFormulaCell( pDoc, aPos, sString );
+						if(pFCell)
+						{
+							USHORT err = pFCell->GetErrCode();
+							
+							if(!(err == errUnknownToken || err == errParameterExpected))
+								bCallInputHandler = TRUE;
+
+							delete pFCell;
+						}
+					}
+					break;
+				default:
+					break;
+			}
+		}
+	}
+
+	if(bCallInputHandler)
 		pScMod->InputEnterHandler();
 }