support running go files in subdirectories.

go/qst.go

var mappings = map[string]func(string) string{
	".go": func(name string) string {
		return fmt.Sprintf("go build %s && ./%s", name, strings.TrimSuffix(name, path.Ext(name)))
		outpath := strings.TrimSuffix(name, path.Ext(name))
		return fmt.Sprintf("go build -o %s %s && ./%s", outpath, name, outpath)
	},
	".rb": func(name string) string {
		return fmt.Sprintf("ruby %s", name)