MultiSplit, un split diferente!

Private Sub Ejemplo()
Dim dels(3) As String
Dim result() As String
Const ss As String = "hola+como--andas(((esto====es+una--prueba"
    dels(0) = "+"
    dels(1) = "--"
    dels(2) = "((("
    dels(3) = "===="
    
    'sin preservar delimitadores
    result = MultiSplit7913(ss, dels, False)
    'result = ("hola";"como";"andas";"esto";"es";"una";"prueba")
    
    'preservando delimitadores
    result = MultiSplit7913(ss, dels, True)
    'result = ("hola";"+como";"--andas";"(((esto";"====es";"+una";"--prueba")
End Sub

Private Function MultiSplit7913(expression As String, Delimiter() As String, PreserveDel As Boolean) As String()
Dim DelCount    As Long
Dim lExp        As Long
Dim X           As Long
Dim Pos         As Long
Dim DelPos()    As Long
Dim AuxArr()    As String
Dim LastPos     As Long
Dim LastLen     As Long
Dim LastInstr   As Long
 
    expression = expression & Delimiter(0)
    lExp = Len(expression)
    DelCount = UBound(Delimiter)
    ReDim DelPos(lExp)
 
    For X = 0 To DelCount
        Pos = 1
        LastInstr = InStr(Pos, expression, Delimiter(X))
        Do While LastInstr <> 0
            DelPos(LastInstr) = X + 1
            Pos = LastInstr + Len(Delimiter(X)) + Pos
            LastInstr = InStr(Pos, expression, Delimiter(X))
        Loop
    Next
 
    ReDim AuxArr(0)
 
    LastPos = 1
 
    For X = 0 To lExp
        If DelPos(X) <> 0 Then
            ReDim Preserve AuxArr(UBound(AuxArr) + 1)
            If PreserveDel Then
                AuxArr(UBound(AuxArr) - 1) = Mid$(expression, LastPos, X - LastPos)
            Else
                AuxArr(UBound(AuxArr) - 1) = Mid$(expression, LastPos + LastLen, X - LastPos - LastLen)
                LastLen = Len(Delimiter(DelPos(X) - 1))
            End If
            LastPos = X
        End If
    Next
 
    ReDim Preserve AuxArr(UBound(AuxArr) - 1)
 
    MultiSplit7913 = AuxArr
 
End Function