Maybe I'm touching some deep voodoo here, but how does one replace the version of %ENV that is used for child processes ? It seems like %ENV is just an ordinary hash, only with 'magic' scope, but the copy for forked processes isn't exactly what I expected :((

To put my question directly: how is %ENV copied by child processes ?

Some evil test code: 
#!/usr/bin/perl

package Env::Tie;

use strict;
use Tie::Hash;
our @ISA = qw/Tie::StdHash/;

sub TIEHASH { bless $_[1] , $_[0] }
sub FETCH { $_[0]->{$_[1]} . '---BWUBUBWU' }
# The '---BWUBUBWU' of course being 
# dynamic generated content

package Test;

use strict;
sub print { print 'env home =', $ENV{HOME}, "\n" }

package main;

use strict;

print "Hic sunt leones\n";
print 'env home =', $ENV{HOME}, "\n";
print "lets go\n";

my %self = %ENV;
tie %ENV, 'Env::Tie', \%self;

print "tied ENV\n";
print 'env home =', $ENV{HOME}, "\n";

print "lets try it in an other package\n";
Test::print();

print "lets fork perl\n";
system(
    'perl', 
    '-e', 
    q{print 'env home =', $ENV{HOME}, "\n"} 
);

print "lets fork bash\n";
system(
    'bash', 
    '-c', 
    q{echo $HOME}
);

print "done\n";

[download]
The behaviour I'm looking for is that the forked processes use my modified ENV.

--
Jaap Karssenberg || Pardus (Larus)? <pardus@cpan.org>
>>>> Zoidberg: So many memories, so many strange fluids gushing out of patients' bodies.... <<<<

In reply to How is %ENV copied by child processes ? by Pardus

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