I wrote a much better translator. It's self-contained:

#!/usr/bin/perl

use strict;
use warnings;

my $pipe;
open $pipe, '|-', '/bin/sh';
while (<DATA>) {
    print $pipe $_;
}
close $pipe;

__DATA__
echo "hello world"

for i in 1 2 3 4; do
  printf "this is iteration %d of the loop\n" $i
done
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