/usr/bin/luac5.4: unrecognized option '--help'
usage: /usr/bin/luac5.4 [options] [filenames]
Available options are:
  -l       list (use -l -l for full listing)
  -o name  output to file 'name' (default is "luac.out")
  -p       parse only
  -s       strip debug information
  -v       show version information
  --       stop handling options
  -        stop handling options and process stdin