You can perform approximate matching using the String::Approx module.

If you want to roll your own, try 

$what_matched = $1
   if $string =~ /\b(\watch|m\wtch|ma\wch|mat\wh|matc\w)\b/;

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Replace the  \w with  . or  [a-z], etc., according to what errors you want to accept.

-Mark

In reply to Re: 1 mismatch string matching by kvale
in thread 1 mismatch string matching by Anonymous Monk

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