lua -v (return code: 0)
Lua 5.2.4 Copyright (C) 1994-2015 Lua.org, PUC-Rio
lua --help (return code: 1)
lua: unrecognized option '--help'
usage: lua [options] [script [args]]
Available options are:
-e stat execute string 'stat'
-i enter interactive mode after executing 'script'
-l name require library 'name'
-v show version information
-E ignore environment variables
-- stop handling options
- stop handling options and execute stdin