From: Robert Klemme <shortcutter@...>
Date: 2009-10-12T18:18:31+09:00
Subject: Re: confuse with OptionParser -h opinion

2009/10/12 Zhenning Guan <g.zhen.ning@gmail.com>:
> require 'optparse'
>
> options = {}
>
> optparse = OptionParser.new do|opts|
>  opts.banner = "Usage: file1 file2 ..."
>  opts.on( '-r', '--hhhh', 'screen' ) do
>    puts opts
>  end
>
>  opts.on( '-s', '--ssss', 'Display this screen' ) do
>    puts opts
>  end
>
>  opts.parse!
> end
>
> =======
> ning@ning:~$ ruby xb.rb -h
> Usage: file1 file2 ...
>    -r, --hhhh                       screen
>    -s, --ssss                       Display this screen
> =======
> I use -h opinion, then it put out all opinion. but -h opinion doesn't
> exit.
> why this happened? can someone penlight me?

Someone else defined it for you

11:17:16 desktop$ ruby19 -r optparse -e ' OptionParser.new.parse "-h"'
Usage: -e [options]
11:17:42 desktop$ ruby19 -r optparse -e ' OptionParser.new.parse "-x"'
-e:1:in `<main>': invalid option: -x (OptionParser::InvalidOption)

Kind regards

robert


-- 
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