Sub RenommerFeuille()
On Error GoTo ErrNom
Dim ws As Worksheet
Set wh = Worksheets(ActiveSheet.Name)
ActiveSheet.Copy After:=Worksheets(Sheets.Count)
If wh.Range("F5").Value <> "" Then ActiveSheet.Name = Format(wh.Range("F5"), "dd-mm-yy")
wh.Activate
Exit Sub
ErrNom:
MsgBox "Ce nom de feuille existe déjà."
End Sub