in reply to Identifying 3 or 4 digits
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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Re^2: Identifying 3 or 4 digits
by htmanning (Friar) on Apr 04, 2018 at 22:43 UTC |