OPerand now does its own expression parsing.

__while.cpp

@@ -39,8 +39,7 @@ namespace jet {
 	   throw coreutils::Exception("type should not be specified with expr.");
 	 exprMethod = true;
 	 exprSaved = variables["expr"];
-	 resolveKeyword("expr");
-	 booleanResult = Operand(variables["expr"]).boolean;
+	 booleanResult = Operand(variables["expr"], global, parent->variables).boolean;
       }
       while(booleanResult) {
 	 processContainer(container);
@@ -48,8 +47,7 @@ namespace jet {
 	 if(exprMethod) {
 	    variables["expr"].reset();
 	    variables["expr"] = exprSaved;
-	    resolveKeyword("expr");
-	    booleanResult = Operand(variables["expr"]).boolean;
+	    booleanResult = Operand(variables["expr"], global, parent->variables).boolean;
 	 } else {
 	    booleanResult = false;
 	    int rc = variables["value1"].compare(variables["value2"]);