1244 

  1244 

  1245     roots = list(repo.set('roots(%ld)', rebaseset))

  1245     roots = list(repo.set('roots(%ld)', rebaseset))

  1246     if not roots:

  1246     if not roots:

  1247         raise error.Abort(_('no matching revisions'))

  1247         raise error.Abort(_('no matching revisions'))

  1248     roots.sort()

  1248     roots.sort()

  1250     detachset = set()

  1250     detachset = set()

  1251     for root in roots:

  1251     for root in roots:

  1252         commonbase = root.ancestor(dest)

  1252         commonbase = root.ancestor(dest)

  1253         if commonbase == root:

  1253         if commonbase == root:

  1254             raise error.Abort(_('source is ancestor of destination'))

  1254             raise error.Abort(_('source is ancestor of destination'))

  1262             if not collapse and samebranch and root in dest.children():

  1262             if not collapse and samebranch and root in dest.children():

  1263                 repo.ui.debug('source is a child of destination\n')

  1263                 repo.ui.debug('source is a child of destination\n')

  1264                 return None

  1264                 return None

  1265 

  1265 

  1266         repo.ui.debug('rebase onto %s starting from %s\n' % (dest, root))

  1266         repo.ui.debug('rebase onto %s starting from %s\n' % (dest, root))

  1268         # Rebase tries to turn <dest> into a parent of <root> while

  1267         # Rebase tries to turn <dest> into a parent of <root> while

  1269         # preserving the number of parents of rebased changesets:

  1268         # preserving the number of parents of rebased changesets:

  1270         #

  1269         #

  1271         # - A changeset with a single parent will always be rebased as a

  1270         # - A changeset with a single parent will always be rebased as a

  1272         #   changeset with a single parent.

  1271         #   changeset with a single parent.