If I use the REGEX tester <https://regex101.com/>
with regular expression (?=(29|79|97))
and test string 29791
I get 3 matches 29, 97,79, as I expect.
On the other hand, if I enter =REGEX("29791","(?=(29|79|97))",,1)
I get a zero length string.
Can anyone help please?
David Lynch
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