From: "Dr.Evil" <akovbovich@...>
Date: 2006-02-09T09:18:22+09:00
Subject: Re: About GetoptLong and exceptions

http://www.sra.co.jp/people/m-kasahr/ruby/getoptlong/getoptlong.doc

Quiet flag
----------
When an error is caused, an error message is output to standard error
by default.  Seting the `qiuet' flag, all error messages are
suppressed.

    parser.quiet = TRUE