You're changing the array elements in-place. Once you've substituted away <infile>, it's gone for good. You could instead work on copies of the array elements:

foreach my $tool (@$tools)
{
    my $edit_tool =  $tool;
    $edit_tool    =~ s/<infile>/$file/ or next;
}

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In reply to Re: Substitution operator troubles by chromatic
in thread Substitution operator troubles by sabkat

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