How to develop an Excel Macro that contains regular expressions so it will work in Windows and Mac

Unfortunately no solution for this has yet been found — the current workaround is to simply replace regular expressions with a series of Replace calls (or other required operation).

I hit this problem trying to use the regexp library when trying to strip html tags from a cell.

I know this wasn't noted within the question as the desired use but, in case it is or future visitors are trying to replace a regex function to remove HTML from tags within a cell within Mac Excel 2011, this user defined function will work. Apologies to the original author, i found it only but can no longer find the source i'm afraid.

Public Function StripHTML(zDataIn As String) As String  Dim iStart As Integer  Dim iEnd   As Integer  Dim iLen   As Integer  Do While InStr(zDataIn, "<") > 0    iStart = InStr(zDataIn, "<")    iEnd = InStr(iStart, zDataIn, ">")    iLen = Len(zDataIn)    If iStart = 1 Then      zDataIn = Right(zDataIn, iLen - iEnd)    Else      If iLen = iEnd Then        zDataIn = Left(zDataIn, iStart - 1)      Else        zDataIn = Mid(zDataIn, 1, iStart - 1) & _                  Right(zDataIn, iLen - iEnd)      End If    End If  Loop  StripHTML = zDataInEnd Function

If you don't mind paying US$99, there is Aivosto RegExpr. Apparently this is a pure VBA solution, that should run on both PC and Mac VBA.

Alternatively, write separate solutions for both PC and Mac, then use compiler directives to separate which bit of code runs on each platform