look for the 4 digits unless it has a dash after it

There's a good reference in the monastery. You want negative look-ahead. I also recommend not using \d. Under Unicode there are MANY numbers that will match that do not conform to the 0..9 I think you expect.

/\b[0-9]{4}\b(?!-)/

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In reply to Re: Identifying 3 or 4 digits by Your Mother
in thread Identifying 3 or 4 digits by htmanning

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