$ cat >> $HGRCPATH <<EOF

  > [defaults]

  > amend=-d "0 0"

  > [extensions]

  > hgext.graphlog=

  > EOF

  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH

  $ glog() {

  >   hg glog --template '{rev}:{node|short}@{branch}({phase}) {desc|firstline}\n' "$@"

  > }

  $ hg init repo

  $ cd repo

  $ echo root > root

  $ hg ci -Am addroot

  adding root

  $ echo a > a

  $ hg ci -Am adda

  adding a

  $ echo b > b

  $ hg ci -Am addb

  adding b

  $ echo c > c

  $ hg ci -Am addc

  adding c

  $ glog

  @  3:7a7552255fb5@default(draft) addc

  |

  o  2:ef23d6ef94d6@default(draft) addb

  |

  o  1:93418d2c0979@default(draft) adda

  |

  o  0:c471ef929e6a@default(draft) addroot

  $ hg gdown

  gdown have been deprecated in favor of previous

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [2] addb

  $ echo b >> b

  $ hg amend

  1 new unstable changesets

  $ hg gdown

  gdown have been deprecated in favor of previous

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [1] adda

  $ echo a >> a

  $ hg amend

  1 new unstable changesets

  $ glog

  @  7:005fe5914f78@default(draft) adda

  |

  | o  5:22619daeed78@default(draft) addb

  | |

  | | o  3:7a7552255fb5@default(draft) addc

  | | |

  | | x  2:ef23d6ef94d6@default(draft) addb

  | |/

  | x  1:93418d2c0979@default(draft) adda

  |/

  o  0:c471ef929e6a@default(draft) addroot

Test stabilizing a predecessor child

  $ hg evolve -v

  move:[5] addb

  atop:[7] adda

  hg rebase -r 22619daeed78 -d 005fe5914f78

  resolving manifests

  getting b

  committing files:

  b

  committing manifest

  committing changelog

  working directory is now at 81b8bbcd5892

  $ glog

  @  8:81b8bbcd5892@default(draft) addb

  |

  o  7:005fe5914f78@default(draft) adda

  |

  | o  3:7a7552255fb5@default(draft) addc

  | |

  | x  2:ef23d6ef94d6@default(draft) addb

  | |

  | x  1:93418d2c0979@default(draft) adda

  |/

  o  0:c471ef929e6a@default(draft) addroot

Test stabilizing a descendant predecessor's child

  $ hg up 7

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg debugobsolete > successors.old

  $ hg evolve -v

  move:[3] addc

  atop:[8] addb

  hg rebase -r 7a7552255fb5 -d 81b8bbcd5892

  resolving manifests

  getting b

  resolving manifests

  getting c

  committing files:

  c

  committing manifest

  committing changelog

  working directory is now at 0f691739f917

  $ hg debugobsolete > successors.new

  $ diff -u successors.old successors.new

  --- successors.old* (glob)

  +++ successors.new* (glob)

  @@ -3,3 +3,4 @@

   93418d2c0979643ad446f621195e78720edb05b4 005fe5914f78e8bc64c7eba28117b0b1fa210d0d 0 (*) {'user': 'test'} (glob)

   7a7d76dc97c57751de9e80f61ed2a639bd03cd24 0 {93418d2c0979643ad446f621195e78720edb05b4} (*) {'user': 'test'} (glob)

   22619daeed78036f80fbd326b6852519c4f0c25e 81b8bbcd5892841efed41433d7a5e9df922396cb 0 (*) {'user': 'test'} (glob)

  +7a7552255fb5f8bd745e46fba6f0ca633a4dd716 0f691739f91762462bf8ba21f35fdf71fe64310e 0 (*) {'user': 'test'} (glob)

  [1]

  $ glog

  @  9:0f691739f917@default(draft) addc

  |

  o  8:81b8bbcd5892@default(draft) addb

  |

  o  7:005fe5914f78@default(draft) adda

  |

  o  0:c471ef929e6a@default(draft) addroot

  $ hg evolve -v

  no troubled changesets

  [1]

Test behaviour with --any

  $ hg up 8

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo b >> b

  $ hg amend

  1 new unstable changesets

  $ glog

  @  11:7a68bc4596ea@default(draft) addb

  |

  | o  9:0f691739f917@default(draft) addc

  | |

  | x  8:81b8bbcd5892@default(draft) addb

  |/

  o  7:005fe5914f78@default(draft) adda

  |

  o  0:c471ef929e6a@default(draft) addroot

  $ hg up 9

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg evolve -v

  nothing to evolve on current working copy parent

  (1 other unstable in the repository, do you want --any or --rev)

  [2]

  $ hg evolve --any -v

  move:[9] addc

  atop:[11] addb

  hg rebase -r 0f691739f917 -d 7a68bc4596ea

  resolving manifests

  removing c

  getting b

  resolving manifests

  getting c

  committing files:

  c

  committing manifest

  committing changelog

  working directory is now at 2256dae6521f

  $ glog

  @  12:2256dae6521f@default(draft) addc

  |

  o  11:7a68bc4596ea@default(draft) addb

  |

  o  7:005fe5914f78@default(draft) adda

  |

  o  0:c471ef929e6a@default(draft) addroot

  $ hg evolve --any -v

  no unstable changesets to evolve

  [1]

Ambiguous evolution

  $ echo a > k

  $ hg add k

  $ hg ci -m firstambiguous

  $ hg up .^

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo a > l

  $ hg add l

  $ hg ci -m secondambiguous

  created new head

  $ hg up .^

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg commit --amend -m "newmessage"

  2 new unstable changesets

  $ hg log -G

  @  changeset:   15:f83a0bce03e4

  |  tag:         tip

  |  parent:      11:7a68bc4596ea

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     newmessage

  |

  | o  changeset:   14:fa68011f392e

  | |  parent:      12:2256dae6521f

  | |  user:        test

  | |  date:        Thu Jan 01 00:00:00 1970 +0000

  | |  summary:     secondambiguous

  | |

  | | o  changeset:   13:bdc003b6eec2

  | |/   user:        test

  | |    date:        Thu Jan 01 00:00:00 1970 +0000

  | |    summary:     firstambiguous

  | |

  | x  changeset:   12:2256dae6521f

  |/   user:        test

  |    date:        Thu Jan 01 00:00:00 1970 +0000

  |    summary:     addc

  |

  o  changeset:   11:7a68bc4596ea

  |  parent:      7:005fe5914f78

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     addb

  |

  o  changeset:   7:005fe5914f78

  |  parent:      0:c471ef929e6a

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     adda

  |

  o  changeset:   0:c471ef929e6a

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     addroot

  $ hg evolve

  abort: multiple evolve candidates

  (select one of *, * with --rev) (glob)

  [255]