diff --git a/nasal.h b/nasal.h
index 8aa5201..139c395 100644
--- a/nasal.h
+++ b/nasal.h
@@ -114,6 +114,18 @@ std::string rawstr(const std::string& str)
 {
     std::string ret("");
     for(auto i:str)
+    {
+#ifdef _WIN32
+        // windows ps or cmd doesn't output unicode normally
+        // if 'chcp65001' is not enabled, so we output the hex
+        if(i<=0)
+        {
+            ret+="\\x";
+            ret+="0123456789abcdef"[(i>>4)&15];
+            ret+="0123456789abcdef"[i&15];
+            continue;
+        }
+#endif
         switch(i)
         {
             case '\a': ret+="\\a";break;
@@ -127,6 +139,7 @@ std::string rawstr(const std::string& str)
             case '\0': ret+="\\0";break;
             default:   ret+=i;    break;
         }
+    }
     return ret;
 }
 #include "nasal_err.h"
diff --git a/test/qrcode.nas b/test/qrcode.nas
new file mode 100644
index 0000000..868abf8
--- /dev/null
+++ b/test/qrcode.nas
@@ -0,0 +1,65 @@
+import("lib.nas");
+
+var code=[
+    [1,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1,1,1,1,1,1],
+    [1,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,1],
+    [1,0,1,1,1,0,1,0,0,0,0,0,0,0,1,0,1,1,1,0,1],
+    [1,0,1,1,1,0,1,0,0,0,0,0,0,0,1,0,1,1,1,0,1],
+    [1,0,1,1,1,0,1,0,0,0,0,0,0,0,1,0,1,1,1,0,1],
+    [1,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,1],
+    [1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,1,1,1,1,1,1],
+    [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,0,1,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,0,1,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,0,1,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+    [1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+];
+
+if(os.platform()=="windows")
+    system("chcp 65001");
+var texture=["  ","██"];
+for(var i=0;i<size(code);i+=1){
+    for(var j=0;j<size(code[i]);j+=1)
+        print(texture[code[i][j]]);
+    print('\n');
+}
+
+var transfer=func(s){
+    var mode=[0,1,0,0];
+    println(mode);
+
+    var len=size(s);
+    var vec=[0,0,0,0,0,0,0,0,0];
+    for(var i=8;i>=0;i-=1){
+        vec[i]=bits.bitand(1,len);
+        len=int(len/2);
+    }
+    println(vec);
+
+    var bitstr=[];
+    for(var i=0;i<size(s);i+=1){
+        var tmp=[0,0,0,0,0,0,0,0];
+        var c=s[i];
+        for(var j=7;j>=0;j-=1){
+            tmp[j]=bits.bitand(1,c);
+            c=int(c/2);
+        }
+        foreach(var j;tmp)
+            append(bitstr,j);
+    }
+    println(bitstr);
+
+    var end=[0,0,0,0];
+    println(end);
+}
+
+transfer("github.com/ValKmjolnir");
\ No newline at end of file
diff --git a/test/snake.nas b/test/snake.nas
index 3254c30..8e0e3d4 100644
--- a/test/snake.nas
+++ b/test/snake.nas
@@ -78,6 +78,7 @@ var game=func(x,y){
     }
     edge0~="╗\n";
     edge1~="╝\n";
+
     var vec=[];
     setsize(vec,x);
     for(var i=0;i<x;i+=1){
@@ -117,7 +118,7 @@ var game=func(x,y){
                 }
                 s~='║\n';
             }
-            print('\e[0;0H'~edge0~s~edge1);
+            print('\e[1;1H'~edge0~s~edge1);
         },
         next:func(){
             var (fx,fy)=snake.front();
@@ -126,28 +127,28 @@ var game=func(x,y){
                 snake.push_front([fx,fy-1]);
                 if(vec[fx][fy-1]==1)
                     gameover=1;
-                else if(vec[fx][fy-1]==2)
+                elsif(vec[fx][fy-1]==2)
                     eat=1;
                 vec[fx][fy-1]=1;
-            }else if(move=='a' and fx-1>=0){
+            }elsif(move=='a' and fx-1>=0){
                 snake.push_front([fx-1,fy]);
                 if(vec[fx-1][fy]==1)
                     gameover=1;
-                else if(vec[fx-1][fy]==2)
+                elsif(vec[fx-1][fy]==2)
                     eat=1;
                 vec[fx-1][fy]=1;
-            }else if(move=='s' and fy+1<y){
+            }elsif(move=='s' and fy+1<y){
                 snake.push_front([fx,fy+1]);
                 if(vec[fx][fy+1]==1)
                     gameover=1;
-                else if(vec[fx][fy+1]==2)
+                elsif(vec[fx][fy+1]==2)
                     eat=1;
                 vec[fx][fy+1]=1;
-            }else if(move=='d' and fx+1<x){
+            }elsif(move=='d' and fx+1<x){
                 snake.push_front([fx+1,fy]);
                 if(vec[fx+1][fy]==1)
                     gameover=1;
-                else if(vec[fx+1][fy]==2)
+                elsif(vec[fx+1][fy]==2)
                     eat=1;
                 vec[fx+1][fy]=1;
             }else{
@@ -161,6 +162,8 @@ var game=func(x,y){
 
             if(eat and snake.length()!=x*y)
                 setapple();
+            elsif(snake.length()==x*y)
+                gameover=2;
         },
         move:func(c){
             if(c=='w' or c=='a' or c=='s' or c=='d')
@@ -188,14 +191,14 @@ var main=func(){
         if(ch!=nil){
             if(ch=='q'[0])
                 break;
-            else if(ch=='p'[0]){
+            elsif(ch=='p'[0]){
                 print("\rpress any key to continue...");
                 libkey.getch();
                 print("\r                            \r");
             }
             g.move(chr(ch));
         }
-        unix.sleep(os.platform()=="windows"?0.01:0.02);
+        unix.sleep(0.02);
         counter-=1;
         if(counter==0){
             counter=20;
@@ -206,7 +209,7 @@ var main=func(){
         }
     }
     libkey.close();
-    println("game over.");
+    println(g.gameover()<=1?"game over.":"you win!");
     println("enter anything to quit.");
     input();
 }