Why doesn't this Windows .cmd script pick up the -z command line switch:

@rem = '--*-Perl-*--
@echo off
perl -x "%~dpnx0" %*
goto endofperl
@rem ';
#!perl
use Getopt::Std;
my %opts = ();
getopt('z', \%opts);
print "z\n" if $opts{'z'};
__END__
:endofperl
[download]

This does:

@rem = '--*-Perl-*--
@echo off
perl -z "%~dpnx0" -z %*
goto endofperl
@rem ';
#!perl
use Getopt::Std;
my %opts = ();
getopt('z', \%opts);
print "z\n" if $opts{'z'};
__END__
:endofperl
[download]

So, by adding -z to the parameters passed within the script, it prints the 'z' when I run this script with -z. That is to say, it has to be provided by the user and hard-coded in the .cmd script to work.

If I add the following line:

print join(' ',@ARGV)."\n";
[download]

then I get this (script is called z.cmd):

C:\>z
-z

C:\>z -z
-z -z
z
[download]

So, both the -z that is hard-coded, and the -z that is user-supplied, get through to the script, but getopt() only picks it up if both are there.

Updated: Changed example to -z to avoid confusion with the -x parameter to perl itself.

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