you are getting  [a x z] instead of  [axz] when you say  [@a]

Are you sure your  join used an empty string? That is,  '' instead of  ' '

Try:

$tmp = join('',@a);
print if /^[$tmp]{3}$/;

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In reply to Re: Character class in an array by fglock
in thread Character class in an array by nikto

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