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tests/test-prune.t
author Pulkit Goyal <7895pulkit@gmail.com>
Thu, 15 Mar 2018 00:09:24 +0530
changeset 3599 5a796d753427
parent 3566 e6bea259c227
child 3591 98941c28f3e2
child 3663 54a469cd5b26
permissions -rw-r--r--
evolve: kill `--obsolete` and `--old-obsolete` flags for graft Evolve extension used to add the couple of flags to `hg graft` command for reasons I don't know but they were deprecated. For the functionality of `hg graft --old-obsolete`, we have `hg grab` now which can do that. One more reason to kill this is that we have logic to parse the graftstate, whereas in core, we are going to change how state files are read and write. Tweaked the tests a bit to use `hg grab` instead of these flags to make rest of the test output consistent. Replaced an entry of `hg graft -O` in doc by `hg grab`.

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > logtemplate={rev}:{node|short}[{bookmarks}] ({separate('/', obsolete ,phase)}) {desc|firstline}\n
  > [extensions]
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    hg ci -m "add $1"
  > }

  $ hg init repo
  $ cd repo
  $ mkcommit a
  $ hg phase --public .
  $ mkcommit b
  $ mkcommit c
  $ mkcommit d
  $ mkcommit e
  $ hg bookmarks BABAR
  $ hg log -G
  @  4:9d206ffc875e[BABAR] (draft) add e
  |
  o  3:47d2a3944de8[] (draft) add d
  |
  o  2:4538525df7e2[] (draft) add c
  |
  o  1:7c3bad9141dc[] (draft) add b
  |
  o  0:1f0dee641bb7[] (public) add a
  

Check arguments exclusive to each other
---------------------------------------

  $ hg prune --fold --biject
  abort: can only specify one of biject, fold
  [255]
  $ hg prune --split --fold
  abort: can only specify one of fold, split
  [255]
  $ hg prune --split --fold --biject
  abort: can only specify one of biject, fold, split
  [255]

Check simple case
----------------------------

prune current and tip changeset

  $ hg prune --user blah --date '1979-12-15' .
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory now at 47d2a3944de8
  1 changesets pruned
  $ hg bookmark
   * BABAR                     3:47d2a3944de8
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}

prune leaving instability behind

  $ hg prune 1
  1 changesets pruned
  2 new orphan changesets
  $ hg book -i BABAR
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}

pruning multiple changeset at once

(add color output to test it does not crash)

  $ hg prune 2: --color debug
  [ ui.status|0 files updated, 0 files merged, 3 files removed, 0 files unresolved]
  [ ui.status|working directory now at [evolve.node|1f0dee641bb7]]
  [ ui.status|2 changesets pruned]
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}

cannot prune public changesets

  $ hg prune 0
  abort: cannot touch public changesets: 1f0dee641bb7
  (see 'hg help phases' for details)
  [255]
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}

Check successors addition
----------------------------

  $ mkcommit bb
  $ mkcommit cc
  $ mkcommit dd
  $ mkcommit ee
  $ hg up 0
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ mkcommit nB
  created new head
  $ mkcommit nC
  $ mkcommit nD
  $ mkcommit nE

  $ hg log -G
  @  12:6e8148413dd5[] (draft) add nE
  |
  o  11:8ee176ff1d4b[] (draft) add nD
  |
  o  10:aa96dc3f04c2[] (draft) add nC
  |
  o  9:6f6f25e4f748[] (draft) add nB
  |
  | o  8:bb5e90a7ea1f[] (draft) add ee
  | |
  | o  7:00ded550b1e2[] (draft) add dd
  | |
  | o  6:354011cd103f[] (draft) add cc
  | |
  | o  5:814c38b95e72[] (draft) add bb
  |/
  o  0:1f0dee641bb7[BABAR] (public) add a
  

one old, one new

  $ hg up 'desc("add ee")'
  4 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ hg prune 'desc("add ee")' -s 'desc("add nE")'
  4 files updated, 0 files merged, 4 files removed, 0 files unresolved
  working directory now at 6e8148413dd5
  1 changesets pruned
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  $ hg log -G
  @  12:6e8148413dd5[] (draft) add nE
  |
  o  11:8ee176ff1d4b[] (draft) add nD
  |
  o  10:aa96dc3f04c2[] (draft) add nC
  |
  o  9:6f6f25e4f748[] (draft) add nB
  |
  | o  7:00ded550b1e2[] (draft) add dd
  | |
  | o  6:354011cd103f[] (draft) add cc
  | |
  | o  5:814c38b95e72[] (draft) add bb
  |/
  o  0:1f0dee641bb7[BABAR] (public) add a
  

one old, two new

  $ hg prune 'desc("add dd")' -s 'desc("add nD")' -s 'desc("add nC")'
  abort: please add --split if you want to do a split
  [255]
  $ hg prune 'desc("add dd")' -s 'desc("add nD")' -s 'desc("add nC")' --split
  1 changesets pruned
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  $ hg log -G
  @  12:6e8148413dd5[] (draft) add nE
  |
  o  11:8ee176ff1d4b[] (draft) add nD
  |
  o  10:aa96dc3f04c2[] (draft) add nC
  |
  o  9:6f6f25e4f748[] (draft) add nB
  |
  | o  6:354011cd103f[] (draft) add cc
  | |
  | o  5:814c38b95e72[] (draft) add bb
  |/
  o  0:1f0dee641bb7[BABAR] (public) add a
  

two old, two new (should be denied)

  $ hg prune 'desc("add cc")' 'desc("add bb")' -s 'desc("add nD")' -s 'desc("add nC")'
  abort: Can't use multiple successors for multiple precursors
  (use --biject to mark a series as a replacement for another)
  [255]
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}

two old, one new:

  $ hg prune 'desc("add cc")' 'desc("add bb")' -s 'desc("add nB")'
  abort: please add --fold if you want to do a fold
  [255]
  $ hg prune 'desc("add cc")' 'desc("add bb")' -s 'desc("add nB")' --fold
  2 changesets pruned
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  814c38b95e72dfe2cbf675b1649ea9d780c89a80 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '9', 'operation': 'prune', 'user': 'test'}
  354011cd103f58bbbd9091a3cee6d6a6bd0dddf7 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}

two old, two new with --biject

  $ hg up 0
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ mkcommit n1
  created new head
  $ mkcommit n2

  $ hg prune 'desc("add n1")::desc("add n2")' -s 'desc("add nD")::desc("add nE")' --biject
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  working directory now at 1f0dee641bb7
  2 changesets pruned
  $ hg debugobsolete
  9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
  7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  4538525df7e2b9f09423636c61ef63a4cb872a2d 0 {7c3bad9141dcb46ff89abf5f61856facd56e476c} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  47d2a3944de8b013de3be9578e8e344ea2e6c097 0 {4538525df7e2b9f09423636c61ef63a4cb872a2d} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
  bb5e90a7ea1f3b4b38b23150a4a597b6146d70ef 6e8148413dd541855b72a920a90c06fca127c7e7 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  00ded550b1e28bba454bd34cec1269d22cf3ef25 aa96dc3f04c2c2341fe6880aeb6dc9fbffff9ef9 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  814c38b95e72dfe2cbf675b1649ea9d780c89a80 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '9', 'operation': 'prune', 'user': 'test'}
  354011cd103f58bbbd9091a3cee6d6a6bd0dddf7 6f6f25e4f748d8f7571777e6e168aedf50350ce8 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  cb7f8f706a6532967b98cf8583a81baab79a0fa7 8ee176ff1d4b2034ce51e3efc579c2de346b631d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}
  21b6f2f1cece8c10326e575dd38239189d467190 6e8148413dd541855b72a920a90c06fca127c7e7 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '13', 'operation': 'prune', 'user': 'test'}

test hg strip replacement

  $ hg up 10
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ mkcommit n1
  created new head
  $ mkcommit n2
  $ hg --config extensions.strip= --config experimental.prunestrip=True strip -r .
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory now at c7e58696a948
  1 changesets pruned
  $ hg --config extensions.strip= --config experimental.prunestrip=True strip -r . --bundle
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/repo/.hg/strip-backup/c7e58696a948-69ca36d3-backup.hg (glob)

test hg prune --keep
  $ mkcommit n1
  created new head
  $ hg diff -r .^
  diff -r aa96dc3f04c2 n1
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/n1	* +0000 (glob)
  @@ -0,0 +1,1 @@
  +n1
  $ hg prune -r . --keep
  1 changesets pruned
  $ hg status
  ? n1

test hg prune -B bookmark
yoinked from test-mq-strip.t

  $ cd ..
  $ hg init bookmarks
  $ cd bookmarks
  $ hg debugbuilddag '..<2.*1/2:m<2+3:c<m+3:a<2.:b<m+2:d<2.:e<m+1:f'
  $ hg bookmark -r 'a' 'todelete'
  $ hg bookmark -r 'b' 'B'
  $ hg bookmark -r 'b' 'nostrip'
  $ hg bookmark -r 'c' 'delete'
  $ hg bookmark -r 'd' 'multipledelete1'
  $ hg bookmark -r 'e' 'multipledelete2'
  $ hg bookmark -r 'f' 'singlenode1'
  $ hg bookmark -r 'f' 'singlenode2'
  $ hg up -C todelete
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (activating bookmark todelete)
  $ hg prune -B nostrip
  bookmark 'nostrip' deleted
  abort: nothing to prune
  [255]
  $ hg tag --remove --local a
  $ hg prune -B todelete
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (leaving bookmark todelete)
  working directory now at d62d843c9a01
  bookmark 'todelete' deleted
  1 changesets pruned
  $ hg id -ir dcbb326fdec2
  abort: hidden revision 'dcbb326fdec2'!
  (use --hidden to access hidden revisions; pruned)
  [255]
  $ hg id -ir d62d843c9a01
  d62d843c9a01
  $ hg bookmarks
     B                         10:ff43616e5d0f
     delete                    6:2702dd0c91e7
     multipledelete1           12:e46a4836065c
     multipledelete2           13:b4594d867745
     singlenode1               14:43227190fef8
     singlenode2               14:43227190fef8
  $ hg prune -B multipledelete1 -B multipledelete2
  bookmark 'multipledelete1' deleted
  bookmark 'multipledelete2' deleted
  2 changesets pruned
  $ hg prune -B singlenode1 -B singlenode2
  bookmark 'singlenode1' deleted
  bookmark 'singlenode2' deleted
  1 changesets pruned
  $ hg prune -B unknownbookmark
  abort: bookmark 'unknownbookmark' not found
  [255]
  $ hg prune -B unknownbookmark1 -B unknownbookmark2
  abort: bookmark 'unknownbookmark1,unknownbookmark2' not found
  [255]
  $ hg prune -B delete -B unknownbookmark
  abort: bookmark 'unknownbookmark' not found
  [255]
  $ hg prune -B delete
  bookmark 'delete' deleted
  3 changesets pruned
  $ hg tag --remove --local c
  $ hg id -ir 6:2702dd0c91e7
  abort: hidden revision '6'!
  (use --hidden to access hidden revisions; pruned)
  [255]

  $ hg debugobsstorestat
  markers total:                      7
      for known precursors:           7 (7/15 obsolete changesets)
      with parents data:              [04] (re)
  markers with no successors:         7
                1 successors:         0
                2 successors:         0
      more than 2 successors:         0
      available  keys:
                  ef1:                7
            operation:                7
                 user:                7
  marker size:
      format v1:
          smallest length:           91
          longer length:             91
          median length:             91
          mean length:               91
      format v0:
          smallest length:          * (glob)
          longer length:            * (glob)
          median length:            * (glob)
          mean length:              * (glob)
  disconnected clusters:              7
          any known node:             7
          smallest length:            1
          longer length:              1
          median length:              1
          mean length:                1
      using parents data:             7
          any known node:             7
          smallest length:            1
          longer length:              1
          median length:              1
          mean length:                1

  $ mkcommit rg
  created new head
  $ hg bookmark rg
  $ hg up 10
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (leaving bookmark rg)
  $ hg bookmark r10
  $ hg log -G
  o  15:cd0038e05e1b[rg] (draft) add rg
  |
  | x  14:43227190fef8[] (obsolete/draft) r14
  | |
  | | x  13:b4594d867745[] (obsolete/draft) r13
  | | |
  | | | x  12:e46a4836065c[] (obsolete/draft) r12
  | | |/
  | | o  11:bab5d5bf48bd[] (draft) r11
  | |/
  +---@  10:ff43616e5d0f[B r10] (draft) r10
  | |
  o |  8:d62d843c9a01[] (draft) r8
  | |
  o |  7:e7d9710d9fc6[] (draft) r7
  |/
  o    3:2b6d669947cd[] (draft) r3
  |\
  | o  2:fa942426a6fd[] (draft) r2
  | |
  o |  1:66f7d451a68b[] (draft) r1
  |/
  o  0:1ea73414a91b[] (draft) r0
  
  $ hg prune 11
  1 changesets pruned
  $ hg log -G
  o  15:cd0038e05e1b[rg] (draft) add rg
  |
  | x  14:43227190fef8[] (obsolete/draft) r14
  | |
  | | x  13:b4594d867745[] (obsolete/draft) r13
  | | |
  | | | x  12:e46a4836065c[] (obsolete/draft) r12
  | | |/
  | | x  11:bab5d5bf48bd[] (obsolete/draft) r11
  | |/
  +---@  10:ff43616e5d0f[B r10] (draft) r10
  | |
  o |  8:d62d843c9a01[] (draft) r8
  | |
  o |  7:e7d9710d9fc6[] (draft) r7
  |/
  o    3:2b6d669947cd[] (draft) r3
  |\
  | o  2:fa942426a6fd[] (draft) r2
  | |
  o |  1:66f7d451a68b[] (draft) r1
  |/
  o  0:1ea73414a91b[] (draft) r0
  
  $ hg book CELESTE
  $ hg prune -r . --keep
  1 changesets pruned
  $ hg book
     B                         8:d62d843c9a01
   * CELESTE                   8:d62d843c9a01
     r10                       8:d62d843c9a01
     rg                        15:cd0038e05e1b
evolve