$ hg init repo

  $ cd repo

  $ echo "[merge]" >> .hg/hgrc

  $ echo "followcopies = 1" >> .hg/hgrc

  $ echo foo > a

  $ echo foo > a2

  $ hg add a a2

  $ hg ci -m "start"

  $ hg mv a b

  $ hg mv a2 b2

  $ hg ci -m "rename"

  $ hg co 0

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

  $ echo blahblah > a

  $ echo blahblah > a2

  $ hg mv a2 c2

  $ hg ci -m "modify"

  created new head

  $ hg merge -y --debug

    unmatched files in local:

     c2

    unmatched files in other:

     b

     b2

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

     on local side:

      src: 'a2' -> dst: 'c2' !

     on remote side:

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

      src: 'a2' -> dst: 'b2' !

    checking for directory renames

  resolving manifests

   branchmerge: True, force: False, partial: False

   ancestor: af1939970a1c, local: 044f8520aeeb+, remote: 85c198ef2f6c

  note: possible conflict - a2 was renamed multiple times to:

   b2

   c2

   b2: remote created -> g

  getting b2

   preserving a for resolve of b

  removing a

   b: remote moved from a -> m

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

  merging a and b to b

  my b@044f8520aeeb+ other b@85c198ef2f6c ancestor a@af1939970a1c

   premerge successful

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

  (branch merge, don't forget to commit)

  $ hg status -AC

  M b

    a

  M b2

  R a

  C c2

  $ cat b

  blahblah

  $ hg ci -m "merge"

  $ hg debugindex b

     rev linkrev       nodeid    p1-nodeid    p2-nodeid

       0       1 57eacc201a7f 000000000000 000000000000

       1       3 4727ba907962 000000000000 57eacc201a7f

  $ hg debugrename b

  b renamed from a:dd03b83622e78778b403775d0d074b9ac7387a66

This used to trigger a "divergent renames" warning, despite no renames

  $ hg cp b b3

  $ hg cp b b4

  $ hg ci -A -m 'copy b twice'

  $ hg up '.^'

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

  $ hg up

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

  $ hg rm b3 b4

  $ hg ci -m 'clean up a bit of our mess'

We'd rather not warn on divergent renames done in the same changeset (issue2113)

  $ hg cp b b3

  $ hg mv b b4

  $ hg ci -A -m 'divergent renames in same changeset'

  $ hg up '.^'

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

  $ hg up

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

Check for issue2642

  $ hg init t

  $ cd t

  $ echo c0 > f1

  $ hg ci -Aqm0

  $ hg up null -q

  $ echo c1 > f1 # backport

  $ hg ci -Aqm1

  $ hg mv f1 f2

  $ hg ci -qm2

  $ hg up 0 -q

  $ hg merge 1 -q --tool internal:local

  $ hg ci -qm3

  $ hg merge 2

  merging f1 and f2 to f2

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

  (branch merge, don't forget to commit)

  $ cat f2

  c0

  $ cd ..

Check for issue2089

  $ hg init repo2089

  $ cd repo2089

  $ echo c0 > f1

  $ hg ci -Aqm0

  $ hg up null -q

  $ echo c1 > f1

  $ hg ci -Aqm1

  $ hg up 0 -q

  $ hg merge 1 -q --tool internal:local

  $ echo c2 > f1

  $ hg ci -qm2

  $ hg up 1 -q

  $ hg mv f1 f2

  $ hg ci -Aqm3

  $ hg up 2 -q

  $ hg merge 3

  merging f1 and f2 to f2

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

  (branch merge, don't forget to commit)

  $ cat f2

  c2

  $ cd ..

Check for issue3074

  $ hg init repo3074

  $ cd repo3074

  $ echo foo > file

  $ hg add file

  $ hg commit -m "added file"

  $ hg mv file newfile

  $ hg commit -m "renamed file"

  $ hg update 0

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

  $ hg rm file

  $ hg commit -m "deleted file"

  created new head

  $ hg merge --debug

    unmatched files in other:

     newfile

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

     on remote side:

      src: 'file' -> dst: 'newfile' %

    checking for directory renames

  resolving manifests

   branchmerge: True, force: False, partial: False

   ancestor: 19d7f95df299, local: 0084274f6b67+, remote: 5d32493049f0

  note: possible conflict - file was deleted and renamed to:

   newfile

   newfile: remote created -> g

  getting newfile

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

  (branch merge, don't forget to commit)

  $ hg status

  M newfile

  $ cd ..

Create x and y, then modify y and rename x to z on one side of merge, and

modify x and rename y to z on the other side.

  $ hg init conflicting-target

  $ cd conflicting-target

  $ echo x > x

  $ echo y > y

  $ hg ci -Aqm 'add x and y'

  $ hg mv x z

  $ echo foo >> y

  $ hg ci -qm 'modify y, rename x to z'

  $ hg co -q 0

  $ hg mv y z

  $ echo foo >> x

  $ hg ci -qm 'modify x, rename y to z'

# We should probably tell the user about the conflicting rename sources.

# Depending on which side they pick, we should take that rename and get

# the changes to the source from the other side. The unchanged file should

# remain.

  $ hg merge --debug 1 -t :merge3

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

     on local side:

      src: 'y' -> dst: 'z' *

     on remote side:

      src: 'x' -> dst: 'z' *

    checking for directory renames

  resolving manifests

   branchmerge: True, force: False, partial: False

   ancestor: 5151c134577e, local: 07fcbc9a74ed+, remote: f21419739508

  starting 4 threads for background file closing (?)

   preserving z for resolve of z

   z: both renamed from y -> m

  picked tool ':merge3' for z (binary False symlink False changedelete False)

  merging z

  my z@07fcbc9a74ed+ other z@f21419739508 ancestor y@5151c134577e

   premerge successful

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

  (branch merge, don't forget to commit)

  $ ls

  x

  z

  $ cat x

  x

  foo

# 'z' should have had the added 'foo' line

  $ cat z

  x