That will still match 6 digits, it'll just match the last 5 rather than the first 5. To match only 5 digits you need an assertion at both ends:

  m{
    (?>! \d)  # not after a digit
    \d(5}
    (?! \d)   # not before a digit
  }x;

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Hugo

In reply to Re: Re: specific numbers of digits by hv
in thread specific numbers of digits by emichswimr

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