I tried it this way, but it fails und the ducumentation is extremely
poor:

def initialize
 version           "0.0.1"
 author            "me"
 copyright         "2010, me"
 synopsis          "[-dh] log_file out_file"
 short_description "A simple app example that takes two arguments."
 long_description  "app5 is a simple application"

 option :version, :names => %w(--version -v)

 # Here is my new option:
 option :distance, :names => %w(--distance -d), :arity => [1,1],
   :arg_description => "Distanz",
   :opt_description => "Maximale Entfernung [m]"

 option :help
 expected_args   :log_file, :out_file
end

What is wrong with my option distance?

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