2673         # strip" to pick a working copy destination on `hg rollback`

  2673         # strip" to pick a working copy destination on `hg rollback`

  2674         if self.currentwlock() is not None:

  2674         if self.currentwlock() is not None:

  2675             ds = self.dirstate

  2675             ds = self.dirstate

  2676             if ds.branch() == b'default':

  2676             if ds.branch() == b'default':

  2677                 # force a file to be written if None exist

  2677                 # force a file to be written if None exist

  2679             # we cannot simply add "branch" to `all_file_names` because branch

  2679             # we cannot simply add "branch" to `all_file_names` because branch

  2680             # is written outside of the transaction control. So we need to

  2680             # is written outside of the transaction control. So we need to

  2681             # backup early.

  2681             # backup early.

  2682             tr.addbackup(b"branch", hardlink=True, location=b'plain')

  2682             tr.addbackup(b"branch", hardlink=True, location=b'plain')

  2683 

  2683