Do i have to post my perl script in here for you guys to help me? The script has 906 lines :)
No, you should not post 906 lines of code. You should get into the habit of isolating your problem to as few lines as possible. In this case, a single line can reproduce the problem.

jwkrahn has pointed out your problem, but you can sometimes get more help using diagnostics: 

use diagnostics;
m/^de.e++issues@dell.com$/;

__END__

Nested quantifiers in regex; marked by <-- HERE in m/^de.e++ <-- HERE
    issues.com$/ at C:\Perl\toolic\foo.pl line 2 (#3)
    (F) You can't quantify a quantifier without intervening parenthese
+s. So
    things like ** or +* or ?* are illegal. The <-- HERE shows in the 
+regular
    expression about where the problem was discovered.
    
    Note that the minimal matching quantifiers, *?, +?, and
    ?? appear to be nested quantifiers, but aren't.  See perlre.

[download]

In reply to Re: What does it mean Nested quantifiers in regex by toolic
in thread What does it mean Nested quantifiers in regex by anakin30

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