def onShortcutUnindentWithBackspace(self):
        """Backspace pressed, unindent
        """
        assert self._qpart.textBeforeCursor().endswith(self.text())

        charsToRemove = len(self._qpart.textBeforeCursor()) % len(self.text())
        if charsToRemove == 0:
            charsToRemove = len(self.text())

        cursor = self._qpart.textCursor()
        cursor.setPosition(cursor.position() - charsToRemove, QTextCursor.KeepAnchor)
        cursor.removeSelectedText()
def ajouter(self):
        """Méthode appelée lors de l'ajout de la commande à l'interpréteur"""
        cle = self.noeud.get_masque("cle")
        cle.proprietes["regex"] = r"'[a-z0-9_:]{3,}'"