Finished up the keyword resolution issue and fixed for, while and until. Other tags still need work.

__while.cpp

@@ -10,6 +10,7 @@ namespace jet {
       coreutils::MString result;
       bool booleanResult = false;
       bool exprMethod = false;
+      coreutils::MString exprSaved;
       
       if(variableDefined("value1")) {
 	 
@@ -37,15 +38,18 @@ namespace jet {
 	 if(variableDefined("type"))
 	   throw coreutils::Exception("type should not be specified with expr.");
 	 exprMethod = true;
+	 exprSaved = variables["expr"];
+	 resolveKeyword("expr");
 	 booleanResult = Operand(variables["expr"]).boolean;
       }
-      
-      while(booleanResult) {	   
+      while(booleanResult) {
 	 processContainer(container);
 	 container.reset();
-	 if(exprMethod) {	      
-	   variables["expr"].reset();
-	   booleanResult = Operand(variables["expr"]).boolean;
+	 if(exprMethod) {
+	    variables["expr"].reset();
+	    variables["expr"] = exprSaved;
+	    resolveKeyword("expr");
+	    booleanResult = Operand(variables["expr"]).boolean;
 	 } else {
 	    booleanResult = false;
 	    int rc = variables["value1"].compare(variables["value2"]);