I suspect I have overlooked something major in the discussion here because when I was faced with (almost) the identical situation I just did: 

package whatever;

...

@EXPORT = qw( $routine );


$routine = q^
$thing = something+something_else;
lots and lots of code;

^;

sub routine [
my ($thing, $other_thing) = @_;
eval $routine;
}

package main;

my $thing;
my $other_thing;

eval $routine;

[download]

If you want to run routine in local scope, eval $routine it. If you don't want it messing with your variables, call it with routine()

____________________
Jeremy
I didn't believe in evil until I dated it.

In reply to Re: subroutines and namespace by jepri
in thread subroutines and namespace by George_Sherston

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