$ cat >> $HGRCPATH <<EOF

  > [extensions]

  > graphlog=

  > rebase=

  > 

  > [alias]

  > tglog = log -G --template "{rev}: '{desc}' {branches}\n"

  > EOF

  $ hg init a

  $ cd a

  $ echo A > A

  $ hg ci -Am A

  adding A

  $ echo B > B

  $ hg ci -Am B

  adding B

  $ echo C > C

  $ hg ci -Am C

  adding C

  $ echo D > D

  $ hg ci -Am D

  adding D

  $ hg up -q -C 0

  $ echo E > E

  $ hg ci -Am E

  adding E

  created new head

  $ cd ..

Rebasing D onto E detaching from C:

  $ hg clone -q -u . a a1

  $ cd a1

  $ hg tglog

  @  4: 'E'

  |

  | o  3: 'D'

  | |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg rebase --detach -s 3 -d 4

  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog

  @  4: 'D'

  |

  o  3: 'E'

  |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg manifest

  A

  D

  E

  $ cd ..

Rebasing C onto E detaching from B:

  $ hg clone -q -u . a a2

  $ cd a2

  $ hg tglog

  @  4: 'E'

  |

  | o  3: 'D'

  | |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg rebase --detach -s 2 -d 4

  saved backup bundle to $TESTTMP/a2/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog

  @  4: 'D'

  |

  o  3: 'C'

  |

  o  2: 'E'

  |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg manifest

  A

  C

  D

  E

  $ cd ..

Rebasing B onto E using detach (same as not using it):

  $ hg clone -q -u . a a3

  $ cd a3

  $ hg tglog

  @  4: 'E'

  |

  | o  3: 'D'

  | |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg rebase --detach -s 1 -d 4

  saved backup bundle to $TESTTMP/a3/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog

  @  4: 'D'

  |

  o  3: 'C'

  |

  o  2: 'B'

  |

  o  1: 'E'

  |

  o  0: 'A'

  $ hg manifest

  A

  B

  C

  D

  E

  $ cd ..

Rebasing C onto E detaching from B and collapsing:

  $ hg clone -q -u . a a4

  $ cd a4

  $ hg tglog

  @  4: 'E'

  |

  | o  3: 'D'

  | |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg rebase --detach --collapse -s 2 -d 4

  saved backup bundle to $TESTTMP/a4/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog

  @  3: 'Collapsed revision

  |  * C

  |  * D'

  o  2: 'E'

  |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg manifest

  A

  C

  D

  E

  $ cd ..

Rebasing across null as ancestor

  $ hg clone -q -U a a5

  $ cd a5

  $ echo x > x

  $ hg add x

  $ hg ci -m "extra branch"

  created new head

  $ hg tglog

  @  5: 'extra branch'

  o  4: 'E'

  |

  | o  3: 'D'

  | |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg rebase --detach -s 1 -d tip

  saved backup bundle to $TESTTMP/a5/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog

  @  5: 'D'

  |

  o  4: 'C'

  |

  o  3: 'B'

  |

  o  2: 'extra branch'

  o  1: 'E'

  |

  o  0: 'A'