remove old mappings.

go/qst.go

	"os"
	"os/exec"
	"os/signal"
	"path"
	"strings"
	"syscall"
	"time"
*/
var mappings = map[string]func(string) string{
	".go": func(name string) string {
		outpath := strings.TrimSuffix(name, path.Ext(name))
		if !path.IsAbs(outpath) {
			outpath = fmt.Sprintf("./%s", outpath)
		}
		return fmt.Sprintf("go build -o %s %s && %s", outpath, name, outpath)
	},
	".rb": func(name string) string {
		return fmt.Sprintf("ruby %s", name)
	},
	".py": func(name string) string {
		return fmt.Sprintf("python %s", name)
	},
}
var delay = flag.Duration("delay", 1*time.Second, "time to wait until restart")
var autoRestart = flag.Bool("autorestart", true, "automatically restart after command exists")
var command = flag.String("command", "", "command to run ({file} will be substituted)")