Content divergence and trying to relocate a node on top of itself (issue5958)

https://bz.mercurial-scm.org/show_bug.cgi?id=5958

  $ . $TESTDIR/testlib/common.sh

  $ cat << EOF >> $HGRCPATH

  > [extensions]

  > rebase =

  > evolve =

  > EOF

  $ hg init issue5958

  $ cd issue5958

  $ echo hi > r0

  $ hg ci -qAm 'add r0'

  $ echo hi > foo.txt

  $ hg ci -qAm 'add foo.txt'

  $ hg metaedit -r . -d '0 2'

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

(Make changes in unrelated files so that we don't have any merge conflicts

during the rebase, but the two touched revisions aren't identical)

date: updated on both side to the same value

  $ echo hi > bar.txt

  $ hg add -q bar.txt

  $ hg amend -q

  $ hg metaedit -r 1 -d '0 1' --hidden

  2 new content-divergent changesets

  $ hg log -r tip

  changeset:   4:c17bf400a278

  tag:         tip

  parent:      0:a24ed8ad918c

  user:        test

  date:        Wed Dec 31 23:59:59 1969 -0000

  instability: content-divergent

  summary:     add foo.txt

  $ echo hi > baz.txt

  $ hg add -q baz.txt

  $ hg amend -q

  $ hg rebase -qr tip -d 4

  $ hg log -G

  @  changeset:   6:08bc7ba82799

  |  tag:         tip

  |  parent:      4:c17bf400a278

  |  user:        test

  |  date:        Wed Dec 31 23:59:58 1969 -0000

  |  instability: content-divergent

  |  summary:     add foo.txt

  |

  *  changeset:   4:c17bf400a278

  |  parent:      0:a24ed8ad918c

  |  user:        test

  |  date:        Wed Dec 31 23:59:59 1969 -0000

  |  instability: content-divergent

  |  summary:     add foo.txt

  |

  o  changeset:   0:a24ed8ad918c

     user:        test

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

     summary:     add r0

  $ hg obslog -a -r .

  @  08bc7ba82799 (6) add foo.txt

  |

  | *  c17bf400a278 (4) add foo.txt

  | |

  x |  1d1fc409af98 (5) add foo.txt

  | |    rewritten(parent, content) as 08bc7ba82799 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)

  | |

  x |  a25dd7af6cf6 (3) add foo.txt

  | |    rewritten(content) as 1d1fc409af98 using amend by test (Thu Jan 01 00:00:00 1970 +0000)

  | |

  x |  0065551bd38f (2) add foo.txt

  |/     rewritten(content) as a25dd7af6cf6 using amend by test (Thu Jan 01 00:00:00 1970 +0000)

  |

  x  cc71ffbc7c00 (1) add foo.txt

       rewritten(date) as 0065551bd38f using metaedit by test (Thu Jan 01 00:00:00 1970 +0000)

       rewritten(date) as c17bf400a278 using metaedit by test (Thu Jan 01 00:00:00 1970 +0000)

  $ hg evolve --list --rev .

  08bc7ba82799: add foo.txt

    content-divergent: c17bf400a278 (draft) (precursor cc71ffbc7c00)

  $ hg log --hidden -r cc71ffbc7c00 -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  1 cc71ffbc7c00 1970-01-01 00:00 +0000: date-changed using metaedit as 4:c17bf400a278; date-changed using metaedit as 2:0065551bd38f

  $ hg log -r 'desc("add foo.txt")' -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  4 c17bf400a278 1969-12-31 23:59 -0000: 

  6 08bc7ba82799 1969-12-31 23:59 -0000: 

  $ hg evolve --content-divergent

  merge:[6] add foo.txt

  with: [4] add foo.txt

  base: [1] add foo.txt

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

  1 new orphan changesets

  working directory is now at 459c64f7eaad

  $ hg log -r 'desc("add foo.txt")' -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  4 c17bf400a278 1969-12-31 23:59 -0000: rewritten using evolve as 7:459c64f7eaad

  7 459c64f7eaad 1969-12-31 23:59 -0000: 

date: updated one one side to an older value

  $ hg evolve -r .

  move:[7] add foo.txt

  atop:[0] add r0

  working directory is now at 545776b4e79f

  $ hg update --hidden --rev 'predecessors(.)'

  updating to a hidden changeset 459c64f7eaad

  (hidden revision '459c64f7eaad' was rewritten as: 545776b4e79f)

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

  working directory parent is obsolete! (459c64f7eaad)

  (use 'hg evolve' to update to its successor: 545776b4e79f)

  $ hg amend --date "0 3"

  1 new orphan changesets

  2 new content-divergent changesets

  $ hg rebase -r . -d 0

  rebasing 9:c117f15338e6 "add foo.txt" (tip)

  $ hg log -G

  @  changeset:   10:7a09c7a39546

  |  tag:         tip

  |  parent:      0:a24ed8ad918c

  |  user:        test

  |  date:        Wed Dec 31 23:59:57 1969 -0000

  |  instability: content-divergent

  |  summary:     add foo.txt

  |

  | *  changeset:   8:545776b4e79f

  |/   parent:      0:a24ed8ad918c

  |    user:        test

  |    date:        Wed Dec 31 23:59:58 1969 -0000

  |    instability: content-divergent

  |    summary:     add foo.txt

  |

  o  changeset:   0:a24ed8ad918c

     user:        test

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

     summary:     add r0

  $ hg evolve --list -r .

  7a09c7a39546: add foo.txt

    content-divergent: 545776b4e79f (draft) (precursor 459c64f7eaad)

  $ hg log -r 459c64f7eaad+7a09c7a39546+545776b4e79f --hidden -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  7 459c64f7eaad 1969-12-31 23:59 -0000: date-changed using amend as 9:c117f15338e6; rebased using evolve as 8:545776b4e79f

  10 7a09c7a39546 1969-12-31 23:59 -0000: 

  8 545776b4e79f 1969-12-31 23:59 -0000: 

  $ hg evolve --content-divergent

  merge:[8] add foo.txt

  with: [10] add foo.txt

  base: [7] add foo.txt

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

  working directory is now at 39c4200c0d94

  $ hg log -r . --hidden -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  11 39c4200c0d94 1969-12-31 23:59 -0000: 

date: updated one side to an newer value

  $ hg update --hidden --rev 'predecessors(.)'

  updating to a hidden changeset 7a09c7a39546

  (hidden revision '7a09c7a39546' was rewritten as: 39c4200c0d94)

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

  working directory parent is obsolete! (7a09c7a39546)

  (use 'hg evolve' to update to its successor: 39c4200c0d94)

  $ hg amend --date "120 0"

  2 new content-divergent changesets

  $ hg log -G

  @  changeset:   12:da3be3d72fe2

  |  tag:         tip

  |  parent:      0:a24ed8ad918c

  |  user:        test

  |  date:        Thu Jan 01 00:02:00 1970 +0000

  |  instability: content-divergent

  |  summary:     add foo.txt

  |

  | *  changeset:   11:39c4200c0d94

  |/   parent:      0:a24ed8ad918c

  |    user:        test

  |    date:        Wed Dec 31 23:59:57 1969 -0000

  |    instability: content-divergent

  |    summary:     add foo.txt

  |

  o  changeset:   0:a24ed8ad918c

     user:        test

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

     summary:     add r0

  $ hg evolve --list -r .

  da3be3d72fe2: add foo.txt

    content-divergent: 39c4200c0d94 (draft) (precursor 7a09c7a39546)

  $ hg up 39c4200c0d94

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

  $ hg log -r 7a09c7a39546+39c4200c0d94+da3be3d72fe2 --hidden -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  10 7a09c7a39546 1969-12-31 23:59 -0000: date-changed using amend as 12:da3be3d72fe2; rewritten using evolve as 11:39c4200c0d94

  11 39c4200c0d94 1969-12-31 23:59 -0000: 

  12 da3be3d72fe2 1970-01-01 00:02 +0000: 

  $ hg evolve --content-divergent

  merge:[11] add foo.txt

  with: [12] add foo.txt

  base: [10] add foo.txt

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

  working directory is now at 06cde6010a51

  $ hg log -r . --hidden -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  13 06cde6010a51 1970-01-01 00:02 +0000: 

date: updated each side to a different value, newer should win

  $ hg amend --date "235 0"

  $ hg update --hidden --rev 'predecessors(.)'

  updating to a hidden changeset 06cde6010a51

  (hidden revision '06cde6010a51' was rewritten as: a7412ff9bfb3)

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

  working directory parent is obsolete! (06cde6010a51)

  (use 'hg evolve' to update to its successor: a7412ff9bfb3)

  $ hg amend --date "784 0"

  2 new content-divergent changesets

  $ hg log -G

  @  changeset:   15:e3077936ec52

  |  tag:         tip

  |  parent:      0:a24ed8ad918c

  |  user:        test

  |  date:        Thu Jan 01 00:13:04 1970 +0000

  |  instability: content-divergent

  |  summary:     add foo.txt

  |

  | *  changeset:   14:a7412ff9bfb3

  |/   parent:      0:a24ed8ad918c

  |    user:        test

  |    date:        Thu Jan 01 00:03:55 1970 +0000

  |    instability: content-divergent

  |    summary:     add foo.txt

  |

  o  changeset:   0:a24ed8ad918c

     user:        test

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

     summary:     add r0

  $ hg evolve --list -r .

  e3077936ec52: add foo.txt

    content-divergent: a7412ff9bfb3 (draft) (precursor 06cde6010a51)

  $ hg log -r 39c4200c0d94+a7412ff9bfb3+e3077936ec52 --hidden -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  11 39c4200c0d94 1969-12-31 23:59 -0000: date-changed using evolve as 13:06cde6010a51

  14 a7412ff9bfb3 1970-01-01 00:03 +0000: 

  15 e3077936ec52 1970-01-01 00:13 +0000: 

  $ hg evolve --content-divergent

  merge:[14] add foo.txt

  with: [15] add foo.txt

  base: [13] add foo.txt

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

  working directory is now at 1a39f3901288

  $ hg log -r . --hidden -T '{rev} {node|short} {date|isodate}: {join(obsfate, "; ")}\n'

  16 1a39f3901288 1970-01-01 00:13 +0000: