Fixed empty sub commands logic structure

Author: racg0092

command.go

@@ -112,6 +112,7 @@ func (cmd *Command) CheckSubCommand(subcmd string) (*Command, error) {
 
 var (
 	ErrNoASubCommand = errors.New("invalid command format")
+	ErrNoSubCommands = errors.New("no subcommands to look through")
 )
 
 // Checks user input looking for sub commands until the last one is found

rhombifer.go

@@ -80,11 +80,13 @@ func ExecCommand(cmd string, args ...string) error {
 	}
 
 	childcommand, args, err := DigThroughSubCommand(subcommand.Subs, args)
-	if err != nil {
+	if err != nil && err != ErrNoSubCommands {
 		return err
 	}
 
-	subcommand = childcommand
+	if childcommand != nil {
+		subcommand = childcommand
+	}
 
 	if subcommand.Run == nil {
 		return fmt.Errorf("Sub command %s, does not have a valid function (Run)", subcommand.Name)