Suggestions so far involve traversing the string twice, which may be
nasty for really long strings.

String searches are quick; it's manipulating strings which cause them to be copied which are much slower.

The POS = INDEX(X,"AC",COUNT(X,"AC"))

method is probably fastest.

Stewart

--
Stewart Leicester     |     JenSoft Technologies, LLC
"Per Ardua Ad Astra"  |
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