How do I get regex support in excel via a function, or custom function?

Question

It appears that regex (as in regular expressions) is not supported in excel, except via VBA. Is this so, and if it is, are there any \"open source\" custom VBA functions tha

Answer 1

regexp use within functions is included in OpenOffice/LibreOffice Calc. To activate go to Tools > Options > Calc > Calulate: Y = Enable Regular Expressions in Formulas. I have used this many times.