diff --git a/module/keyboard.cpp b/module/keyboard.cpp
index 14a4257..742984d 100644
--- a/module/keyboard.cpp
+++ b/module/keyboard.cpp
@@ -56,7 +56,7 @@ extern "C" nasal_ref nas_init(std::vector<nasal_ref>& args,nasal_gc& gc){
     tcflush(0,TCIOFLUSH);
     tcgetattr(0,&init_termios);
     new_termios=init_termios;
-    new_termios.c_lflag&=~(ICANON|ECHO|ECHONL);
+    new_termios.c_lflag&=~(ICANON|ECHO|ECHONL|ECHOE);
     // vmin=0 is nonblock input, but in wsl there is a bug that will block input
     // so we use fcntl to write the nonblock input
     new_termios.c_cc[VMIN]=1;
diff --git a/stl/module.nas b/stl/module.nas
index 0168efd..8757d77 100644
--- a/stl/module.nas
+++ b/stl/module.nas
@@ -4,7 +4,6 @@
 # this provides safe usage of dylib
 # when dylib is closed,
 # all the invalid functions cannot be called
-import("lib.nas");
 
 var module_call_func=func(fptr,args){
     return __builtin_dlcall;
diff --git a/test/module_test.nas b/test/module_test.nas
index bfd2f33..1668671 100644
--- a/test/module_test.nas
+++ b/test/module_test.nas
@@ -1,5 +1,44 @@
-import("./module/libfib.nas");
+var libfib=func(){
+    var (dd,fib,qfib)=(nil,nil,nil);
+    return {
+        open:func(){
+            if(dd==nil){
+                dd=dylib.dlopen("./module/libfib.so");
+                fib=dylib.dlsym(dd,"fib");
+                qfib=dylib.dlsym(dd,"quick_fib");
+            }else{
+                println("[info  ] already loaded.");
+            }
+        },
+        close:func(){
+            if(dd==nil){
+                println("[error ] already closed.");
+                return;
+            }
+            dylib.dlclose(dd);
+            (dd,fib,qfib)=(nil,nil,nil);
+        },
+        fib:func(x){
+            if(fib!=nil)
+                return dylib.dlcall(fib,x);
+            println("[error ] cannot call fib.");
+            return nil;
+        },
+        qfib:func(x){
+            if(qfib!=nil)
+                return dylib.dlcall(qfib,x);
+            println("[error ] cannot call qfib.");
+            return nil;
+        }
+    }
+}();
 
-println(libfib);
-println(libfib.fib(29));
-println(libfib.qfib(29));
\ No newline at end of file
+println("[keys  ] ",keys(libfib));
+libfib.open();
+libfib.open();
+println("[result] ",libfib.fib(40));
+println("[result] ",libfib.qfib(40));
+libfib.close();
+println("[result] ",libfib.fib(40));
+println("[result] ",libfib.qfib(40));
+libfib.close();
\ No newline at end of file