GOTO Kentaro wrote:

>[snip]
>
>
>Array syntax works as sequential control, e.g., 
>
>  [ print(error_message), exit(1) ] if error_flag
>
>  error_flag and [ print(error_message), exit(1) ]
>
>if you could accept these unconventional application :)
>

Or,

  (print error_message; exit 1)  if error_flag