Salut Chopin,
Bonsoir l'équipe,
ou ça..., la macro démarrant sur un double-clic en colonne [A].
Private Sub Worksheet_BeforeDoubleClick(ByVal Target As Range, Cancel As Boolean)
'
Dim tData
Cancel = True
'
If Not Intersect(Target, Range("A:A")) Is Nothing Then
iRow = Range("A" & Rows.Count).End(xlUp).Row
tData = Range("A1:A" & iRow).Value
For x = 1 To UBound(tData)
If InStr(tData(x, 1), "_") = 6 Then tData(x, 1) = Replace(tData(x, 1), "_", "")
Next
Range("A1:A" & iRow) = tData
End If
'
End Sub
A+