$password =~ m/^[DesiredCharactersHere]+$/
Watch out! That permits "Desired\n"! I just zapped someone on the beginners list for that same mistake. Potential Big Security Hole.

Better to use something like: $password !~ /[^DesiredCharactersHere]/ or even not $password =~ tr/DesiredCharactersHere//c.

-- Randal L. Schwartz, Perl hacker

In reply to security hole, danger - Re: Re: Yet another REGEXP Question by merlyn
in thread Yet another REGEXP Question by fastkeys

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