With the disclaimer that I'm relatively new at this:
Check out the simple code below: 
$string = "abcd";
# $input = "d"; OK
# $input = "("; ERROR

if($string =~ m/($input)/){
   print "The string is $string\n";
}

[download]

My problem is that the variable $input can be anything, including metacharacters (I'm trying to do some compiler stuff).
How can the code be changed to check any input?
Thanks
-tl

In reply to Problems with matching and metacharacters by Anonymous Monk

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