~/.bin/ydl.go: Fix youtube detection

Regular expressions are hard (or something).

.bin/ydl.go

	"time"
)
var isYoutube = regexp.MustCompile(`(www\.)youtube\.com|youtu\.be`)
var isYoutube = regexp.MustCompile(`(www\.)?youtube\.com|youtu\.be`)
func main() {
	if len(os.Args) < 2 {
	success := false
	var err error
	for i := 0; i < 5; i++ {
		url := args[0]
		cmd := exec.Command("youtube-dl", "--no-mtime")
		cmd.Stdin = os.Stdin
		cmd.Stderr = os.Stderr
		cmd.Stdout = os.Stdout
		if isYoutube.MatchString(url) {
			// download youtube video in a lower resolution (saving bandwidth/space)
			cmd.Args = append(cmd.Args, "-f", "[height <=? 720]")
		for _, arg := range args {
			fmt.Println(arg, isYoutube.MatchString(arg))
			if isYoutube.MatchString(arg) {
				// download youtube video in a lower resolution (saving bandwidth/space)
				cmd.Args = append(cmd.Args, "-f", "[height <=? 720]")
				break
			}
		}
		cmd.Args = append(cmd.Args, args...)