Go pty setup for interactive shell

main.go

package main

import (
	"code.google.com/p/go.crypto/ssh/terminal"
	"github.com/kr/pty"
	"io"
	"os"
	"os/exec"
)

func main() {
	c := exec.Command("bash")
	f, err := pty.Start(c)
	if err != nil {
		panic(err)
	}

	oldState, _ := terminal.MakeRaw(int(os.Stdin.Fd()))
	defer terminal.Restore(int(os.Stdin.Fd()), oldState)

	term := terminal.NewTerminal(os.Stdin, "")
	cb := func(s string, i int, r rune) (string, int, bool) {
		return keypressed(term, s, i, r)
	}
	term.AutoCompleteCallback = cb

	go func() {
		io.Copy(f, os.Stdin)
	}()
	io.Copy(os.Stdout, f)
}

func keypressed(t *terminal.Terminal, line string, pos int, key rune) (newLine string, newPos int, ok bool) {
	c := []byte{byte(key)}
	t.Write(c)              //write to tty directly
	return line, pos, false //print on stdin
}