From: E F van de Laar <emiel@...>
Date: 2004-01-17T09:12:14+09:00
Subject: optparse and required arguments

Hi,

I'm playing around with optparse and ran into something I couldn't get
working right off hand. I define two options; both of which require an
argument. I'm using a rescue clause "catch all" to catch options which
do not get an argument passed in. If I pass two of these on the command
line the second option gets passed as an argument to the first. Anyone
have an idea on how to get around this?

The test script and output...

emiel@marvin:~/co/tally> cat test.rb
require 'optparse'

ARGV.options do |opts|
  opts.on("-L=LIB", String) { |arg| puts "-L=" +arg }
  opts.on("-R=LIB", String) { |arg| puts "-R=" +arg }
  begin
    opts.parse!
  rescue
    $stderr.puts "Error: #{$!}\n\n" + opts.to_s
    exit 1
  end
end

% ruby1.8 test.rb -L -R quux
-L=-R

% ruby1.8 test.rb -L foo -R
-L=foo

Cheers,

Emiel
-- 
E F van de Laar
www.il.fontys.nl/~emiel
PGP pubkey: %finger emiel@il.fontys.nl