diff --git a/go.mod b/go.mod
index 49ea9a0..254450e 100644
--- a/go.mod
+++ b/go.mod
@@ -4,13 +4,14 @@ go 1.23.3
 
 require (
 	github.com/aymanbagabas/go-pty v0.2.2
+	github.com/hymkor/gmnlisp v0.7.3
 	github.com/hymkor/go-windows1x-virtualterminal v0.5.0
-	golang.org/x/term v0.15.0
+	golang.org/x/term v0.26.0
 )
 
 require (
 	github.com/creack/pty v1.1.21 // indirect
 	github.com/u-root/u-root v0.11.0 // indirect
 	golang.org/x/crypto v0.17.0 // indirect
-	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/sys v0.27.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 37f8a22..43515bd 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ github.com/aymanbagabas/go-pty v0.2.2 h1:YZREB4eSj+1xdbbItIokX0ekjjeifgJOA+ZvxU4
 github.com/aymanbagabas/go-pty v0.2.2/go.mod h1:gfvlwH+0U66BCwxJREjJaAOEs9H1OFf3YFjI9WSiZ04=
 github.com/creack/pty v1.1.21 h1:1/QdRyBaHHJP61QkWMXlOIBfsgdDeeKfK8SYVUWJKf0=
 github.com/creack/pty v1.1.21/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
+github.com/hymkor/gmnlisp v0.7.3 h1:LDolAFXisJvY4j/8VrJvC12J2NL5KXLKilTLG47l0RI=
+github.com/hymkor/gmnlisp v0.7.3/go.mod h1:5GY1Nxnu68pufvGdhrk9Kyp9XSNkYLfNpXznLk+eS74=
 github.com/hymkor/go-windows1x-virtualterminal v0.5.0 h1:UIMMK09QSLCdM9Up4ny6qmBOrrn3rozxIRPfEUhxmTo=
 github.com/hymkor/go-windows1x-virtualterminal v0.5.0/go.mod h1:M/X0FJL+4wQtrm03JnL9gVyvhyscJk3t+ItZ29sla2g=
 github.com/u-root/gobusybox/src v0.0.0-20221229083637-46b2883a7f90 h1:zTk5683I9K62wtZ6eUa6vu6IWwVHXPnoKK5n2unAwv0=
@@ -10,7 +12,7 @@ github.com/u-root/u-root v0.11.0 h1:6gCZLOeRyevw7gbTwMj3fKxnr9+yHFlgF3N7udUVNO8=
 github.com/u-root/u-root v0.11.0/go.mod h1:DBkDtiZyONk9hzVEdB/PWI9B4TxDkElWlVTHseglrZY=
 golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
 golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
-golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
-golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
-golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
+golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
+golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.26.0 h1:WEQa6V3Gja/BhNxg540hBip/kkaYtRg3cxg4oXSw4AU=
+golang.org/x/term v0.26.0/go.mod h1:Si5m1o57C5nBNQo5z1iq+XDijt21BDBDp2bK0QI8e3E=
diff --git a/main.go b/main.go
index 2e2fc95..c2bf102 100644
--- a/main.go
+++ b/main.go
@@ -1,12 +1,57 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"io"
 	"os"
-	"time"
+
+	"github.com/hymkor/gmnlisp"
 )
 
+type Global struct {
+	w      *Watcher
+	term   *Term
+	closer []func()
+}
+
+func (g *Global) Close() {
+	for i := len(g.closer) - 1; i >= 0; i-- {
+		g.closer[i]()
+	}
+	g.closer = nil
+}
+
+func (g *Global) sendln(ctx context.Context, w *gmnlisp.World, arg gmnlisp.Node) (gmnlisp.Node, error) {
+	io.WriteString(g.term, arg.String())
+	g.term.Write([]byte{'\r'})
+	return gmnlisp.Null, nil
+}
+
+func (g *Global) spawn(ctx context.Context, w *gmnlisp.World, args []gmnlisp.Node) (gmnlisp.Node, error) {
+
+	argStrings := make([]string, 0, len(args))
+	for _, s := range args {
+		argStrings = append(argStrings, s.String())
+	}
+
+	sh := g.term.Command(argStrings[0], argStrings[1:]...)
+	if err := sh.Start(); err != nil {
+		return nil, err
+	}
+	g.closer = append(g.closer, func() { sh.Wait() })
+	return gmnlisp.Null, nil
+}
+
+func (g *Global) expect(ctx context.Context, w *gmnlisp.World, args []gmnlisp.Node) (gmnlisp.Node, error) {
+	patterns := make([]string, 0, len(args))
+	for _, arg := range args {
+		patterns = append(patterns, arg.String())
+	}
+	result := g.w.Expect(patterns...)
+	return gmnlisp.Integer(result), nil
+}
+
 func mains() error {
 	term, err := NewTerm()
 	if err != nil {
@@ -16,16 +61,35 @@ func mains() error {
 
 	watcher := NewWatcher(term)
 
-	sh := term.Command("cmd.exe")
-	if err := sh.Start(); err != nil {
-		return err
+	g := &Global{
+		term: term,
+		w:    watcher,
 	}
+	defer g.Close()
 
-	i := watcher.ExpectWithTimeout(time.Duration(10*time.Second), "100")
-	// i := watcher.Expect("100")
-	io.WriteString(term, "\x03exit\r")
-	println(i)
-	return sh.Wait()
+	lisp := gmnlisp.New()
+
+	lisp = lisp.Flet(
+		gmnlisp.Functions{
+			gmnlisp.NewSymbol("sendln"):  gmnlisp.Function1(g.sendln),
+			gmnlisp.NewSymbol("spawn"):   &gmnlisp.Function{Min: 1, F: g.spawn},
+			gmnlisp.NewSymbol("expect*"): &gmnlisp.Function{Min: 1, F: g.expect},
+		})
+
+	_, err = lisp.Interpret(context.Background(), `
+		(spawn "cmd.exe")
+		(block main
+			(while t
+				(case (expect* "xxx" "yyy")
+					((0)
+						(sendln (format nil "~Aexit" (convert 3 <character>)))
+						(return-from main nil)
+						)
+					((1)
+						(sendln (format nil "~Arem" (convert 3 <character>)))
+						)
+					)))`)
+	return err
 }
 
 func main() {