From: Chris Patti <cpatti@...>
Date: 2010-11-16T06:27:26+09:00
Subject: Stupid optparse question

How can I make my code print the usage even if zero options are given?
 I had *thought* opts.on_tail would do this, but it doesn't seem to be
working.  The usage prints properly if I use -h though:
---
require 'optparse'

options = {}
OptionParser.new do |opts|
  opts.banner = "Usage: #$0 [options] [terms]"

  opts.on("-a", "--automatic", "Use current Git repo to determine
current and next release branch and tag names") do |a|
    options[:automatic] = a
  end

  opts.on("-n", "--next-branch [nextbranch]", "The branch you want
this script to create.") do |n|
    options[:nextbranch] = n
  end

  opts.on("-t", "--tag [tag]", "The tag you want the new branch
created from.") do |t|
    options[:tag] = t
  end

  opts.on_tail("-h", "--help", "Show this help message.") do
     puts opts
     exit
  end

end.parse!

----
Any hints appreciated.

Thanks!
-Chris


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