How can I allow undefined options when parsing args with Getopt

Question

If I have a command line like:

my_script.pl -foo -WHATEVER

My script knows about --foo, and I want Getopt to set variable

Answer 1

Aren't the remaining (unparsed) values simply left behind in @ARGV? If your extra content starts with dashes, you will need to indicate the end of the options list with a --:

#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Long;
use Data::Dumper;

my $foo;
my $result = GetOptions ("foo"   => \$foo);
print Dumper([ $foo, \@ARGV ]);

Then calling:

my_script.pl --foo -- --WHATEVER

gives:

$VAR1 = [
          1,
          [
            '--WHATEVER'
          ]
        ];

PS. In MooseX::Getopt, the "remaining" options from the command line are put into the extra_argv attribute as an arrayref -- so I'd recommend converting!