optimize test file & little update.

test/loop.nas

@@ -7,25 +7,32 @@ for(;;)
 }
 for(var i=1;;)break;
 for(var i=1;;i+=1)break;
-for(var i=1;i<10;i+=1)print(i);
+for(var i=1;i<10;i+=1)print(i,'\n');
 
 while(1)break;
 var j=0;
 while(j<10)
 {
-    print(j);
+    print(j,'\n');
     j+=1;
 }
 
-forindex(var j;[0,1,2,3])print(j);
+forindex(var j;[0,1,2,3])print(j,'\n');
 forindex(var j;[0,1,2,3])
 {
     var a=j;
-    print(a*a);
+    print(a*a,'\n');
 }
-foreach(var j;[0,1,2,3])print([0,1,2,3][j]);
+foreach(var j;[0,1,2,3])print([0,1,2,3][j],'\n');
 foreach(var j;[0,1,2,3])
 {
     var a=[0,1,2,3][j];
-    print(a*a-1);
+    print(a*a-1,'\n');
 }
+
+var f=func(){
+    var x=0;
+    return func(){x+=1;};
+}();
+for(var i=0;i<4e6;i+=1)
+    f();