Thank you for your answers. OK, so this was very simple once I tried it out on a very small piece of code instead of what I was working on. I did not realize that you could just stick {} pretty much anywhere you want. Example below, in case anyone is interested.

#!/usr/bin/perl
use strict;
use warnings;

use re::engine::TRE max_cost => 5;

my $seq1 = "TTTTACGAGAGAATATGTTAGGTGAAGGAACCTCTATCTGAGAGAAAAA";
my $seq2 = "TTTTGAGCTCGTTGTCGATCCGAGGTACTTTTGAATCCGCAGTTTCTTG";

if ("A pearl is a hard object produced ..." =~ /\(Perl\)/i)
    {
     print "$1\n";
    }


if (($seq2 =~ /GTTGTTCGATCCAGGTAC/) && ($seq1 =~ /ACGAGAGATAGATGA/))
    {
     print "Have a match\n";
    }

[download]

This will print 'pearl' and "Have a match". 

#!/usr/bin/perl
use strict;
use warnings;

my $seq1 = "TTTTACGAGAGAATATGTTAGGTGAAGGAACCTCTATCTGAGAGAAAAA";
my $seq2 = "TTTTGAGCTCGTTGTCGATCCGAGGTACTTTTGAATCCGCAGTTTCTTG";

if ("A pearl is a hard object produced ..." =~ /\(Perl\)/i)
   {
    print "$1\n";
   }

 {
  use re::engine::TRE max_cost => 5;

  if (($seq2 =~ /GTTGTTCGATCCAGGTAC/) && ($seq1 =~ /ACGAGAGATAGATGA/))
      {
        print "Have a match\n";
      }
  }

[download]

This will only print out "Have a match".

In reply to Re^2: restrict use of regex module in script by pmpmmpmp
in thread restrict use of regex module in script by pmpmmpmp

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