show help when NAME:

  lisp script - maintain ros scripts

USAGE:
  lisp [global-options] script [<command>] [command-options] [arguments ...]

OPTIONS:
      --help  display usage information and exit

COMMANDS:
  impl       install script to run implementation
  init       Create a roswell script.
  install    Install roswell script to PATH.
  run        Run roswell script.
  uninstall  Uninstall roswell script package based installation

AUTHORS:
  SANO Masatoshi

LICENSE:
  MIT

lib/script/main.lisp

@@ -28,4 +28,5 @@
 
 (defun handler (cmd)
   "Handler for just evaluate options"
-  )
+  (unless (clingon:command-arguments cmd)
+    (clingon:run cmd '("--help"))))