1132                 or self.ui.configbool('devel', 'check-locks')):

  1132                 or self.ui.configbool('devel', 'check-locks')):

  1133             if self._currentlock(self._lockref) is None:

  1133             if self._currentlock(self._lockref) is None:

  1134                 raise error.ProgrammingError('transaction requires locking')

  1134                 raise error.ProgrammingError('transaction requires locking')

  1135         tr = self.currenttransaction()

  1135         tr = self.currenttransaction()

  1136         if tr is not None:

  1136         if tr is not None:

  1138             return tr.nest()

  1137             return tr.nest()

  1139 

  1138 

  1140         # abort here if the journal already exists

  1139         # abort here if the journal already exists

  1141         if self.svfs.exists("journal"):

  1140         if self.svfs.exists("journal"):

  1142             raise error.RepoError(

  1141             raise error.RepoError(