code: def commitVCS(self, tag=None):
          ''' Commit the current working directory state (or do nothing if the
              working directory is not version controlled)
          '''
          if not self.vcs:
              return
          self.vcs.commit(message='version %s' % tag, tag=tagf commitVCS(self, tag=None):
          ''' Commit the current working directory state (or do nothing if the
              working directory is not version controlled)
          '''
          if not self.vcs:
              return
          self.vcs.commit(message='version %s' % tag, tag=tag)
docs: Commit the current working directory state (or do nothing if the
              working directory is not version controlled)