From: "Ara.T.Howard" <ahoward@...>
Date: 2004-03-25T01:24:27+09:00
Subject: Re: optparse and required options

On 24 Mar 2004, Jim Menard wrote:

> I'm just starting to use optparse. I want to force the user to supply an
> option. How can I do this with optparse? Here's what I have
> 
> email = nil
> ARGV.options { | opt |

>     opt.on('-e', '--email EMAIL', EMAIL address') { | e | email = e }


required:

      opt.on('-e', '--email=EMAIL', EMAIL address') { | e | email = e }

optional:

      opt.on('-e', '--email=[EMAIL]', EMAIL address') { | e | email = e }


>     opt.parse!
> }
> 
> This forces the '--email' option to take an argument. What I want to do is
> force the user to supply an '--email EMAIL' option.
> 
> Do I have to append
> 
>     usage() if email.nil?
> 
> and if so, how do I get the optarg obejct's help message?
> 
> Thanks for your help.
> 
> Jim
> 

-a
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