$ cat >> $HGRCPATH <<EOF

  > [extensions]

  > hgext.graphlog=

  > EOF

  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ glog() {

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

  > }

  $ hg init repo

  $ cd repo

Cannot uncommit null changeset

  $ hg uncommit

  abort: cannot rewrite immutable changeset

  [255]

Cannot uncommit public changeset

  $ echo a > a

  $ hg ci -Am adda a

  $ hg phase --public .

  $ hg uncommit

  abort: cannot rewrite immutable changeset

  [255]

  $ hg phase --force --draft .

Cannot uncommit merge

  $ hg up -q null

  $ echo b > b

  $ echo c > c

  $ echo d > d

  $ echo f > f

  $ echo g > g

  $ echo j > j

  $ echo m > m

  $ echo n > n

  $ echo o > o

  $ hg ci -Am addmore

  adding b

  adding c

  adding d

  adding f

  adding g

  adding j

  adding m

  adding n

  adding o

  created new head

  $ hg merge

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

  (branch merge, don't forget to commit)

  $ hg uncommit

  abort: cannot uncommit while merging

  [255]

  $ hg ci -m merge

  $ hg uncommit

  abort: cannot uncommit merge changeset

  [255]

Prepare complicated changeset

  $ hg branch bar

  marked working directory as branch bar

  (branches are permanent and global, did you want a bookmark?)

  $ hg cp a aa

  $ echo b >> b

  $ hg rm c

  $ echo d >> d

  $ echo e > e

  $ hg mv f ff

  $ hg mv g h

  $ echo j >> j

  $ echo k > k

  $ echo l > l

  $ hg rm m

  $ hg rm n

  $ echo o >> o

  $ hg ci -Am touncommit

  adding e

  adding k

  adding l

  $ hg st --copies --change .

  M b

  M d

  M j

  M o

  A aa

    a

  A e

  A ff

    f

  A h

    g

  A k

  A l

  R c

  R f

  R g

  R m

  R n

  $ hg man -r .

  a

  aa

  b

  d

  e

  ff

  h

  j

  k

  l

  o

Add a couple of bookmarks

  $ glog --hidden

  @  3:5eb72dbe0cb4@bar(draft) touncommit

  |

  o    2:f63b90038565@default(draft) merge

  |\

  | o  1:f15c744d48e8@default(draft) addmore

  |

  o  0:07f494440405@default(draft) adda

  $ hg bookmark -r 2 unrelated

  $ hg bookmark touncommit-bm

  $ hg bookmark --inactive touncommit-bm-inactive

  $ hg bookmarks

   * touncommit-bm             3:5eb72dbe0cb4

     touncommit-bm-inactive    3:5eb72dbe0cb4

     unrelated                 2:f63b90038565

Prepare complicated working directory

  $ hg branch foo

  marked working directory as branch foo

  $ hg mv ff f

  $ hg mv h i

  $ hg rm j

  $ hg rm k

  $ echo l >> l

  $ echo m > m

  $ echo o > o

Test uncommit without argument, should be a no-op

  $ hg uncommit

  abort: nothing to uncommit

  (use --all to uncommit all files)

  [255]

  $ hg bookmarks

   * touncommit-bm             3:5eb72dbe0cb4

     touncommit-bm-inactive    3:5eb72dbe0cb4

     unrelated                 2:f63b90038565

Test no matches

  $ hg uncommit --include nothere

  abort: nothing to uncommit

  (use --all to uncommit all files)

  [255]

Enjoy uncommit

  $ hg uncommit aa b c f ff g h j k l m o

  $ hg branch

  foo

  $ hg st --copies

  M b

  A aa

    a

  A i

    g

  A l

  R c

  R g

  R j

  R m

  $ cat aa

  a

  $ cat b

  b

  b

  $ cat l

  l

  l

  $ cat m

  m

  $ test -f c && echo 'error: c was removed!'

  [1]

  $ test -f j && echo 'error: j was removed!'

  [1]

  $ test -f k && echo 'error: k was removed!'

  [1]

  $ hg st --copies --change .

  M d

  A e

  R n

  $ hg man -r .

  a

  b

  c

  d

  e

  f

  g

  j

  m

  o

  $ hg cat -r . d

  d

  d

  $ hg cat -r . e

  e

  $ glog --hidden

  @  4:e8db4aa611f6@bar(draft) touncommit

  |

  | x  3:5eb72dbe0cb4@bar(obsolete/draft) touncommit

  |/

  o    2:f63b90038565@default(draft) merge

  |\

  | o  1:f15c744d48e8@default(draft) addmore

  |

  o  0:07f494440405@default(draft) adda

  $ hg bookmarks

   * touncommit-bm             4:e8db4aa611f6

     touncommit-bm-inactive    4:e8db4aa611f6

     unrelated                 2:f63b90038565

  $ hg debugobsolete

Test phase is preserved, no local changes

  $ hg up -C 3 --hidden

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

  (leaving bookmark touncommit-bm)

  working directory parent is obsolete! (5eb72dbe0cb4)

  (use 'hg evolve' to update to its successor: e8db4aa611f6)

  $ hg --config extensions.purge= purge

  $ hg uncommit -I 'set:added() and e'

  2 new divergent changesets

  $ hg st --copies

  A e

  $ hg st --copies --change .

  M b

  M d

  M j

  M o

  A aa

    a

  A ff

    f

  A h

    g

  A k

  A l

  R c

  R f

  R g

  R m

  R n

  $ glog --hidden

  @  5:a1d4c1ad76cc@bar(draft) touncommit

  |

  | o  4:e8db4aa611f6@bar(draft) touncommit

  |/

  | x  3:5eb72dbe0cb4@bar(obsolete/draft) touncommit

  |/

  o    2:f63b90038565@default(draft) merge

  |\

  | o  1:f15c744d48e8@default(draft) addmore

  |

  o  0:07f494440405@default(draft) adda

  $ hg debugobsolete

Test --all

  $ hg up -C 3 --hidden

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

  working directory parent is obsolete! (5eb72dbe0cb4)

  (5eb72dbe0cb4 has diverged, use 'hg evolve --list --divergent' to resolve the issue)

  $ hg --config extensions.purge= purge

  $ hg uncommit --all -X e

  1 new divergent changesets

  $ hg st --copies

  M b

  M d

  M j

  M o

  A aa

    a

  A ff

    f

  A h

    g

  A k

  A l

  R c

  R f

  R g

  R m

  R n

  $ hg st --copies --change .

  A e

  $ hg debugobsolete

Display a warning if nothing left

  $ hg uncommit e

  new changeset is empty

  (use 'hg prune .' to remove it)

  $ hg debugobsolete

Test instability warning

  $ hg ci -m touncommit

  $ echo unrelated > unrelated

  $ hg ci -Am addunrelated unrelated

  $ hg previous

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

  [8] touncommit

  $ hg uncommit aa

  1 new unstable changesets

Test uncommiting agains a different base

  $ hg cat b --rev .

  b

  b

  $ hg cat b --rev .^

  b

  $ hg cat b --rev 0

  b: no such file in rev 07f494440405

  [1]

  $ hg uncommit --rev . b

  abort: cannot uncommit to parent changeset

  [255]

  $ hg uncommit --rev 0 b

  $ hg cat b --rev .

  b: no such file in rev 5b27f6b17da2

  [1]

Test uncommiting precursors

  $ hg uncommit --hidden --rev 'precursors(.)' b

  $ hg cat b --rev .

  b

  b