$ 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 add A

  $ hg ci -m A

  $ echo 'B' > B

  $ hg add B

  $ hg ci -m B

  $ echo C >> A

  $ hg ci -m C

  $ hg up -q -C 0

  $ echo D >> A

  $ hg ci -m D

  created new head

  $ echo E > E

  $ hg add E

  $ hg ci -m E

  $ hg up -q -C 0

  $ hg branch 'notdefault'

  marked working directory as branch notdefault

  $ echo F >> A

  $ hg ci -m F

  $ cd ..

Rebasing B onto E - check keep:

  $ hg clone -q -u . a a1

  $ cd a1

  $ hg tglog

  @  5: 'F' notdefault

  |

  | o  4: 'E'

  | |

  | o  3: 'D'

  |/

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

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

  merging A

  warning: conflicts during merge.

  merging A failed!

  abort: fix unresolved conflicts with hg resolve then run hg rebase --continue

  [255]

Solve the conflict and go on:

  $ echo 'conflict solved' > A

  $ rm A.orig

  $ hg resolve -m A

  $ hg rebase --continue

  $ hg tglog

  @  7: 'C'

  |

  o  6: 'B'

  |

  | o  5: 'F' notdefault

  | |

  o |  4: 'E'

  | |

  o |  3: 'D'

  |/

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ cd ..

Rebase F onto E - check keepbranches:

  $ hg clone -q -u . a a2

  $ cd a2

  $ hg tglog

  @  5: 'F' notdefault

  |

  | o  4: 'E'

  | |

  | o  3: 'D'

  |/

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'

  $ hg rebase -s 5 -d 4 --keepbranches

  merging A

  warning: conflicts during merge.

  merging A failed!

  abort: fix unresolved conflicts with hg resolve then run hg rebase --continue

  [255]

Solve the conflict and go on:

  $ echo 'conflict solved' > A

  $ rm A.orig

  $ hg resolve -m A

  $ hg rebase --continue

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

  $ hg tglog

  @  5: 'F' notdefault

  |

  o  4: 'E'

  |

  o  3: 'D'

  |

  | o  2: 'C'

  | |

  | o  1: 'B'

  |/

  o  0: 'A'