Function 万能转日期(a As Range)
If a <> "" Then
B = "R" & a
  For I = Len(B) To 1 Step -1
    If IsNumeric(Mid(B, I, 1)) Then
     F = Mid(B, I, 1) & F
     Else
     G = Format(F, "00") & G
     F = ""
    End If
  Next
  If Len(G) = 4 Then G = Year(Now()) & G
  If Len(G) = 6 Then
    If Left(G, 2) * 1 > Mid(Year(Now()), 3, 2) * 1 Then
      G = "19" & G
    Else
      G = "20" & G
    End If
  End If
   G = Right(G, 8)
 
If IsDate(Format(G, "0000-00-00")) Then
  万能转日期 = Format(G, "0000-00-00")
Else
 万能转日期 = "日期不合法，源文本有错误"
End If
End If
End Function