$ hg init t

  $ cd t

  $ echo 1 > a

  $ hg ci -qAm "first"

  $ hg cp a b

  $ hg mv a c

  $ echo 2 >> b

  $ echo 2 >> c

  $ hg ci -qAm "second"

  $ hg co -C 0

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

  $ echo 0 > a

  $ echo 1 >> a

  $ hg ci -qAm "other"

  $ hg merge --debug

    searching for copies back to rev 1

    unmatched files in other:

     b

     c

    all copies found (* = to merge, ! = divergent, % = renamed and deleted):

     src: 'a' -> dst: 'b' *

     src: 'a' -> dst: 'c' *

    checking for directory renames

  resolving manifests

   branchmerge: True, force: False, partial: False

   ancestor: b8bf91eeebbc, local: add3f11052fa+, remote: 17c05bb7fcb6

   preserving a for resolve of b

   preserving a for resolve of c

  removing a

  starting 4 threads for background file closing (?)

   b: remote moved from a -> m (premerge)

  picked tool ':merge' for b (binary False symlink False changedelete False)

  merging a and b to b

  my b@add3f11052fa+ other b@17c05bb7fcb6 ancestor a@b8bf91eeebbc

   premerge successful

   c: remote moved from a -> m (premerge)

  picked tool ':merge' for c (binary False symlink False changedelete False)

  merging a and c to c

  my c@add3f11052fa+ other c@17c05bb7fcb6 ancestor a@b8bf91eeebbc

   premerge successful

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

  (branch merge, don't forget to commit)

file b

  $ cat b

  0

  1

  2

file c

  $ cat c

  0

  1

  2

Test disabling copy tracing

- first verify copy metadata was kept

  $ hg up -qC 2

  $ hg rebase --keep -d 1 -b 2 --config extensions.rebase=

  rebasing 2:add3f11052fa "other" (tip)

  merging b and a to b

  merging c and a to c

  $ cat b

  0

  1

  2

- next verify copy metadata is lost when disabled

  $ hg strip -r . --config extensions.strip=

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

  saved backup bundle to $TESTTMP/t/.hg/strip-backup/550bd84c0cd3-fc575957-backup.hg (glob)

  $ hg up -qC 2

  $ hg rebase --keep -d 1 -b 2 --config extensions.rebase= --config experimental.disablecopytrace=True --config ui.interactive=True << EOF

  > c

  > EOF

  rebasing 2:add3f11052fa "other" (tip)

  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? c

  $ cat b

  1

  2

  $ cd ..

Verify disabling copy tracing still keeps copies from rebase source

  $ hg init copydisable

  $ cd copydisable

  $ touch a

  $ hg ci -Aqm 'add a'

  $ touch b

  $ hg ci -Aqm 'add b, c'

  $ hg cp b x

  $ echo x >> x

  $ hg ci -qm 'copy b->x'

  $ hg up -q 1

  $ touch z

  $ hg ci -Aqm 'add z'

  $ hg log -G -T '{rev} {desc}\n'

  @  3 add z

  |

  | o  2 copy b->x

  |/

  o  1 add b, c

  |

  o  0 add a

  $ hg rebase -d . -b 2 --config extensions.rebase= --config experimental.disablecopytrace=True

  rebasing 2:6adcf8c12e7d "copy b->x"

  saved backup bundle to $TESTTMP/copydisable/.hg/strip-backup/6adcf8c12e7d-ce4b3e75-backup.hg (glob)

  $ hg up -q 3

  $ hg log -f x -T '{rev} {desc}\n'

  3 copy b->x

  1 add b, c

  $ cd ../

Verify we duplicate existing copies, instead of detecting them

  $ hg init copydisable3

  $ cd copydisable3

  $ touch a

  $ hg ci -Aqm 'add a'

  $ hg cp a b

  $ hg ci -Aqm 'copy a->b'

  $ hg mv b c

  $ hg ci -Aqm 'move b->c'

  $ hg up -q 0

  $ hg cp a b

  $ echo b >> b

  $ hg ci -Aqm 'copy a->b (2)'

  $ hg log -G -T '{rev} {desc}\n'

  @  3 copy a->b (2)

  |

  | o  2 move b->c

  | |

  | o  1 copy a->b

  |/

  o  0 add a

  $ hg rebase -d 2 -s 3 --config extensions.rebase= --config experimental.disablecopytrace=True

  rebasing 3:47e1a9e6273b "copy a->b (2)" (tip)

  saved backup bundle to $TESTTMP/copydisable3/.hg/strip-backup/47e1a9e6273b-2d099c59-backup.hg (glob)

  $ hg log -G -f b

  @  changeset:   3:76024fb4b05b

  :  tag:         tip

  :  user:        test

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

  :  summary:     copy a->b (2)

  :

  o  changeset:   0:ac82d8b1f7c4

     user:        test

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

     summary:     add a