quotemeta 
use warnings;
use strict;

my $line = "CCCC--CCCC--CCC(--CC(O";
my $string = quotemeta "CCC(";
if ($line =~ m/$string/) {print "match";}

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In reply to Re: How to ignore special characters in a variable ? by toolic
in thread How to ignore special characters in a variable ? by Anonymous Monk

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