view tests/test-merge-force.t @ 36738:613954a17a25

setdiscovery: back out changeset 5cfdf6137af8 (issue5809)

As explained in the bug report, this commit caused a performance
regression. The problem occurs when the local repo has very many
heads. Before 5cfdf6137af8, we used to get the remote's list of heads
and if these heads mostly overlapped with the local repo's heads, we
would mark these common heads as common, which would greatly reduce
the size of the set of undecided nodes.

Note that a similar problem existed before 5cfdf6137af8: If the local
repo had very many heads and the server just had a few (or many heads
from a disjoint set), we would do the same kind of slow discovery as
we would with 5cfdf6137af8 in the case where local and remote repos
share a large set of common nodes.

For now, we just back out 5cfdf6137af8. We should improve the
discovery in the "local has many heads, remote has few heads" case,
but let's do that after backing this out.

Differential Revision: https://phab.mercurial-scm.org/D2643

Set up a base, local, and remote changeset, as well as the working copy state.
Files names are of the form base_remote_local_working-copy. For example,
content1_content2_content1_content2-untracked represents a
file that was modified in the remote changeset, left untouched in the
local changeset, and then modified in the working copy to match the
remote content, then finally forgotten.

  $ hg init repo
  $ cd repo

Create base changeset

  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 3 1
  $ hg addremove -q --similarity 0
  $ hg commit -qm 'base'

Create remote changeset

  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 3 2
  $ hg addremove -q --similarity 0
  $ hg commit -qm 'remote'

Create local changeset

  $ hg update -q 0
  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 3 3
  $ hg addremove -q --similarity 0
  $ hg commit -qm 'local'

Set up working directory

  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 3 wc
  $ hg addremove -q --similarity 0
  $ hg forget *_*_*_*-untracked
  $ rm *_*_*_missing-*

  $ hg status -A
  M content1_content1_content1_content4-tracked
  M content1_content1_content3_content1-tracked
  M content1_content1_content3_content4-tracked
  M content1_content2_content1_content2-tracked
  M content1_content2_content1_content4-tracked
  M content1_content2_content2_content1-tracked
  M content1_content2_content2_content4-tracked
  M content1_content2_content3_content1-tracked
  M content1_content2_content3_content2-tracked
  M content1_content2_content3_content4-tracked
  M content1_missing_content1_content4-tracked
  M content1_missing_content3_content1-tracked
  M content1_missing_content3_content4-tracked
  M missing_content2_content2_content4-tracked
  M missing_content2_content3_content2-tracked
  M missing_content2_content3_content4-tracked
  M missing_missing_content3_content4-tracked
  A content1_content1_missing_content1-tracked
  A content1_content1_missing_content4-tracked
  A content1_content2_missing_content1-tracked
  A content1_content2_missing_content2-tracked
  A content1_content2_missing_content4-tracked
  A content1_missing_missing_content1-tracked
  A content1_missing_missing_content4-tracked
  A missing_content2_missing_content2-tracked
  A missing_content2_missing_content4-tracked
  A missing_missing_missing_content4-tracked
  R content1_content1_content1_content1-untracked
  R content1_content1_content1_content4-untracked
  R content1_content1_content1_missing-untracked
  R content1_content1_content3_content1-untracked
  R content1_content1_content3_content3-untracked
  R content1_content1_content3_content4-untracked
  R content1_content1_content3_missing-untracked
  R content1_content2_content1_content1-untracked
  R content1_content2_content1_content2-untracked
  R content1_content2_content1_content4-untracked
  R content1_content2_content1_missing-untracked
  R content1_content2_content2_content1-untracked
  R content1_content2_content2_content2-untracked
  R content1_content2_content2_content4-untracked
  R content1_content2_content2_missing-untracked
  R content1_content2_content3_content1-untracked
  R content1_content2_content3_content2-untracked
  R content1_content2_content3_content3-untracked
  R content1_content2_content3_content4-untracked
  R content1_content2_content3_missing-untracked
  R content1_missing_content1_content1-untracked
  R content1_missing_content1_content4-untracked
  R content1_missing_content1_missing-untracked
  R content1_missing_content3_content1-untracked
  R content1_missing_content3_content3-untracked
  R content1_missing_content3_content4-untracked
  R content1_missing_content3_missing-untracked
  R missing_content2_content2_content2-untracked
  R missing_content2_content2_content4-untracked
  R missing_content2_content2_missing-untracked
  R missing_content2_content3_content2-untracked
  R missing_content2_content3_content3-untracked
  R missing_content2_content3_content4-untracked
  R missing_content2_content3_missing-untracked
  R missing_missing_content3_content3-untracked
  R missing_missing_content3_content4-untracked
  R missing_missing_content3_missing-untracked
  ! content1_content1_content1_missing-tracked
  ! content1_content1_content3_missing-tracked
  ! content1_content1_missing_missing-tracked
  ! content1_content2_content1_missing-tracked
  ! content1_content2_content2_missing-tracked
  ! content1_content2_content3_missing-tracked
  ! content1_content2_missing_missing-tracked
  ! content1_missing_content1_missing-tracked
  ! content1_missing_content3_missing-tracked
  ! content1_missing_missing_missing-tracked
  ! missing_content2_content2_missing-tracked
  ! missing_content2_content3_missing-tracked
  ! missing_content2_missing_missing-tracked
  ! missing_missing_content3_missing-tracked
  ! missing_missing_missing_missing-tracked
  ? content1_content1_missing_content1-untracked
  ? content1_content1_missing_content4-untracked
  ? content1_content2_missing_content1-untracked
  ? content1_content2_missing_content2-untracked
  ? content1_content2_missing_content4-untracked
  ? content1_missing_missing_content1-untracked
  ? content1_missing_missing_content4-untracked
  ? missing_content2_missing_content2-untracked
  ? missing_content2_missing_content4-untracked
  ? missing_missing_missing_content4-untracked
  C content1_content1_content1_content1-tracked
  C content1_content1_content3_content3-tracked
  C content1_content2_content1_content1-tracked
  C content1_content2_content2_content2-tracked
  C content1_content2_content3_content3-tracked
  C content1_missing_content1_content1-tracked
  C content1_missing_content3_content3-tracked
  C missing_content2_content2_content2-tracked
  C missing_content2_content3_content3-tracked
  C missing_missing_content3_content3-tracked

Merge with remote

# Notes:
# - local and remote changed content1_content2_*_content2-untracked
#   in the same way, so it could potentially be left alone

  $ hg merge -f --tool internal:merge3 'desc("remote")' 2>&1 | tee $TESTTMP/merge-output-1
  local [working copy] changed content1_missing_content1_content4-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  local [working copy] changed content1_missing_content3_content3-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  local [working copy] changed content1_missing_content3_content4-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  local [working copy] changed content1_missing_missing_content4-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_content3-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content1_content4-tracked
  merging content1_content2_content2_content1-tracked
  merging content1_content2_content2_content4-tracked
  merging content1_content2_content3_content1-tracked
  merging content1_content2_content3_content3-tracked
  merging content1_content2_content3_content4-tracked
  merging content1_content2_missing_content1-tracked
  merging content1_content2_missing_content4-tracked
  merging missing_content2_content2_content4-tracked
  merging missing_content2_content3_content3-tracked
  merging missing_content2_content3_content4-tracked
  merging missing_content2_missing_content4-tracked
  merging missing_content2_missing_content4-untracked
  warning: conflicts while merging content1_content2_content1_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_content2_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_content3_content3-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_content3_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_missing_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_content2_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_content3_content3-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_content3_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_missing_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_missing_content4-untracked! (edit, then use 'hg resolve --mark')
  18 files updated, 3 files merged, 8 files removed, 35 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon

Check which files need to be resolved (should correspond to the output above).
This should be the files for which the base (1st filename segment), the remote
(2nd segment) and the working copy (4th segment) are all different.

Interestingly, one untracked file got merged and added, which corresponds to the
odd 'if force and branchmerge and different' case in manifestmerge().

  $ hg resolve -l
  U content1_content2_content1_content1-untracked
  U content1_content2_content1_content2-untracked
  U content1_content2_content1_content4-tracked
  U content1_content2_content1_content4-untracked
  U content1_content2_content1_missing-tracked
  U content1_content2_content1_missing-untracked
  R content1_content2_content2_content1-tracked
  U content1_content2_content2_content1-untracked
  U content1_content2_content2_content2-untracked
  U content1_content2_content2_content4-tracked
  U content1_content2_content2_content4-untracked
  U content1_content2_content2_missing-tracked
  U content1_content2_content2_missing-untracked
  R content1_content2_content3_content1-tracked
  U content1_content2_content3_content1-untracked
  U content1_content2_content3_content2-untracked
  U content1_content2_content3_content3-tracked
  U content1_content2_content3_content3-untracked
  U content1_content2_content3_content4-tracked
  U content1_content2_content3_content4-untracked
  U content1_content2_content3_missing-tracked
  U content1_content2_content3_missing-untracked
  R content1_content2_missing_content1-tracked
  U content1_content2_missing_content1-untracked
  U content1_content2_missing_content2-untracked
  U content1_content2_missing_content4-tracked
  U content1_content2_missing_content4-untracked
  U content1_content2_missing_missing-tracked
  U content1_content2_missing_missing-untracked
  U content1_missing_content1_content4-tracked
  U content1_missing_content3_content3-tracked
  U content1_missing_content3_content4-tracked
  U content1_missing_missing_content4-tracked
  U missing_content2_content2_content4-tracked
  U missing_content2_content3_content3-tracked
  U missing_content2_content3_content4-tracked
  U missing_content2_missing_content4-tracked
  U missing_content2_missing_content4-untracked

Check status and file content

Some files get added (e.g. content1_content2_content1_content1-untracked)

It is not intuitive that content1_content2_content1_content4-tracked gets
merged while content1_content2_content1_content4-untracked gets overwritten.
Any *_content2_*-untracked triggers the modified/deleted prompt and then gets
overwritten.

A lot of untracked files become tracked, for example
content1_content2_content2_content2-untracked.

*_missing_missing_missing-tracked is reported as removed ('R'), which
doesn't make sense since the file did not exist in the parent, but on the
other hand, merged-in additions are reported as modifications, which is
almost as strange.

missing_missing_content3_missing-tracked becomes removed ('R'), even though
the remote side did not touch the file

  $ checkstatus() {
  >   for f in `$PYTHON $TESTDIR/generate-working-copy-states.py filelist 3`
  >   do
  >     echo
  >     hg status -A $f
  >     if test -f $f
  >     then
  >       cat $f
  >     else
  >       echo '<missing>'
  >     fi
  >   done
  > }
  $ checkstatus 2>&1 | tee $TESTTMP/status1
  
  C content1_content1_content1_content1-tracked
  content1
  
  R content1_content1_content1_content1-untracked
  content1
  
  M content1_content1_content1_content4-tracked
  content4
  
  R content1_content1_content1_content4-untracked
  content4
  
  ! content1_content1_content1_missing-tracked
  <missing>
  
  R content1_content1_content1_missing-untracked
  <missing>
  
  M content1_content1_content3_content1-tracked
  content1
  
  R content1_content1_content3_content1-untracked
  content1
  
  C content1_content1_content3_content3-tracked
  content3
  
  R content1_content1_content3_content3-untracked
  content3
  
  M content1_content1_content3_content4-tracked
  content4
  
  R content1_content1_content3_content4-untracked
  content4
  
  ! content1_content1_content3_missing-tracked
  <missing>
  
  R content1_content1_content3_missing-untracked
  <missing>
  
  A content1_content1_missing_content1-tracked
  content1
  
  ? content1_content1_missing_content1-untracked
  content1
  
  A content1_content1_missing_content4-tracked
  content4
  
  ? content1_content1_missing_content4-untracked
  content4
  
  ! content1_content1_missing_missing-tracked
  <missing>
  
  content1_content1_missing_missing-untracked: * (glob)
  <missing>
  
  M content1_content2_content1_content1-tracked
  content2
  
  M content1_content2_content1_content1-untracked
  content2
  
  M content1_content2_content1_content2-tracked
  content2
  
  M content1_content2_content1_content2-untracked
  content2
  
  M content1_content2_content1_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  content1
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M content1_content2_content1_content4-untracked
  content2
  
  M content1_content2_content1_missing-tracked
  content2
  
  M content1_content2_content1_missing-untracked
  content2
  
  M content1_content2_content2_content1-tracked
  content2
  
  M content1_content2_content2_content1-untracked
  content2
  
  C content1_content2_content2_content2-tracked
  content2
  
  M content1_content2_content2_content2-untracked
  content2
  
  M content1_content2_content2_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  content1
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M content1_content2_content2_content4-untracked
  content2
  
  M content1_content2_content2_missing-tracked
  content2
  
  M content1_content2_content2_missing-untracked
  content2
  
  M content1_content2_content3_content1-tracked
  content2
  
  M content1_content2_content3_content1-untracked
  content2
  
  M content1_content2_content3_content2-tracked
  content2
  
  M content1_content2_content3_content2-untracked
  content2
  
  M content1_content2_content3_content3-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content3
  ||||||| base
  content1
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M content1_content2_content3_content3-untracked
  content2
  
  M content1_content2_content3_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  content1
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M content1_content2_content3_content4-untracked
  content2
  
  M content1_content2_content3_missing-tracked
  content2
  
  M content1_content2_content3_missing-untracked
  content2
  
  M content1_content2_missing_content1-tracked
  content2
  
  M content1_content2_missing_content1-untracked
  content2
  
  M content1_content2_missing_content2-tracked
  content2
  
  M content1_content2_missing_content2-untracked
  content2
  
  M content1_content2_missing_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  content1
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M content1_content2_missing_content4-untracked
  content2
  
  M content1_content2_missing_missing-tracked
  content2
  
  M content1_content2_missing_missing-untracked
  content2
  
  R content1_missing_content1_content1-tracked
  <missing>
  
  R content1_missing_content1_content1-untracked
  content1
  
  M content1_missing_content1_content4-tracked
  content4
  
  R content1_missing_content1_content4-untracked
  content4
  
  R content1_missing_content1_missing-tracked
  <missing>
  
  R content1_missing_content1_missing-untracked
  <missing>
  
  R content1_missing_content3_content1-tracked
  <missing>
  
  R content1_missing_content3_content1-untracked
  content1
  
  C content1_missing_content3_content3-tracked
  content3
  
  R content1_missing_content3_content3-untracked
  content3
  
  M content1_missing_content3_content4-tracked
  content4
  
  R content1_missing_content3_content4-untracked
  content4
  
  R content1_missing_content3_missing-tracked
  <missing>
  
  R content1_missing_content3_missing-untracked
  <missing>
  
  R content1_missing_missing_content1-tracked
  <missing>
  
  ? content1_missing_missing_content1-untracked
  content1
  
  A content1_missing_missing_content4-tracked
  content4
  
  ? content1_missing_missing_content4-untracked
  content4
  
  R content1_missing_missing_missing-tracked
  <missing>
  
  content1_missing_missing_missing-untracked: * (glob)
  <missing>
  
  C missing_content2_content2_content2-tracked
  content2
  
  M missing_content2_content2_content2-untracked
  content2
  
  M missing_content2_content2_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M missing_content2_content2_content4-untracked
  content2
  
  M missing_content2_content2_missing-tracked
  content2
  
  M missing_content2_content2_missing-untracked
  content2
  
  M missing_content2_content3_content2-tracked
  content2
  
  M missing_content2_content3_content2-untracked
  content2
  
  M missing_content2_content3_content3-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content3
  ||||||| base
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M missing_content2_content3_content3-untracked
  content2
  
  M missing_content2_content3_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M missing_content2_content3_content4-untracked
  content2
  
  M missing_content2_content3_missing-tracked
  content2
  
  M missing_content2_content3_missing-untracked
  content2
  
  M missing_content2_missing_content2-tracked
  content2
  
  M missing_content2_missing_content2-untracked
  content2
  
  M missing_content2_missing_content4-tracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M missing_content2_missing_content4-untracked
  <<<<<<< working copy: 0447570f1af6 - test: local
  content4
  ||||||| base
  =======
  content2
  >>>>>>> merge rev:    85100b8c675b - test: remote
  
  M missing_content2_missing_missing-tracked
  content2
  
  M missing_content2_missing_missing-untracked
  content2
  
  C missing_missing_content3_content3-tracked
  content3
  
  R missing_missing_content3_content3-untracked
  content3
  
  M missing_missing_content3_content4-tracked
  content4
  
  R missing_missing_content3_content4-untracked
  content4
  
  R missing_missing_content3_missing-tracked
  <missing>
  
  R missing_missing_content3_missing-untracked
  <missing>
  
  A missing_missing_missing_content4-tracked
  content4
  
  ? missing_missing_missing_content4-untracked
  content4
  
  R missing_missing_missing_missing-tracked
  <missing>
  
  missing_missing_missing_missing-untracked: * (glob)
  <missing>

  $ for f in `$PYTHON $TESTDIR/generate-working-copy-states.py filelist 3`
  > do
  >   if test -f ${f}.orig
  >   then
  >     echo ${f}.orig:
  >     cat ${f}.orig
  >   fi
  > done
  content1_content2_content1_content4-tracked.orig:
  content4
  content1_content2_content2_content4-tracked.orig:
  content4
  content1_content2_content3_content3-tracked.orig:
  content3
  content1_content2_content3_content4-tracked.orig:
  content4
  content1_content2_missing_content4-tracked.orig:
  content4
  missing_content2_content2_content4-tracked.orig:
  content4
  missing_content2_content3_content3-tracked.orig:
  content3
  missing_content2_content3_content4-tracked.orig:
  content4
  missing_content2_missing_content4-tracked.orig:
  content4
  missing_content2_missing_content4-untracked.orig:
  content4

Re-resolve and check status

  $ hg resolve --unmark --all
  $ hg resolve --all --tool :local
  (no more unresolved files)
  $ hg resolve --unmark --all
  $ hg resolve --all --tool internal:merge3
  other [merge rev] changed content1_content2_content1_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content1_content4-tracked
  other [merge rev] changed content1_content2_content1_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content1_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content2_content1-tracked
  other [merge rev] changed content1_content2_content2_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content2_content4-tracked
  other [merge rev] changed content1_content2_content2_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content2_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content3_content1-tracked
  other [merge rev] changed content1_content2_content3_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content3_content3-tracked
  other [merge rev] changed content1_content2_content3_content3-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_content3_content4-tracked
  other [merge rev] changed content1_content2_content3_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_content3_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_missing_content1-tracked
  other [merge rev] changed content1_content2_missing_content1-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_content2-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  merging content1_content2_missing_content4-tracked
  other [merge rev] changed content1_content2_missing_content4-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_missing-tracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  other [merge rev] changed content1_content2_missing_missing-untracked which local [working copy] deleted
  use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
  local [working copy] changed content1_missing_content1_content4-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  local [working copy] changed content1_missing_content3_content3-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  local [working copy] changed content1_missing_content3_content4-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  local [working copy] changed content1_missing_missing_content4-tracked which other [merge rev] deleted
  use (c)hanged version, (d)elete, or leave (u)nresolved? u
  merging missing_content2_content2_content4-tracked
  merging missing_content2_content3_content3-tracked
  merging missing_content2_content3_content4-tracked
  merging missing_content2_missing_content4-tracked
  merging missing_content2_missing_content4-untracked
  warning: conflicts while merging content1_content2_content1_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_content2_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_content3_content3-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_content3_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging content1_content2_missing_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_content2_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_content3_content3-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_content3_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_missing_content4-tracked! (edit, then use 'hg resolve --mark')
  warning: conflicts while merging missing_content2_missing_content4-untracked! (edit, then use 'hg resolve --mark')
  [1]
  $ checkstatus > $TESTTMP/status2 2>&1
  $ cmp $TESTTMP/status1 $TESTTMP/status2 || diff -U8 $TESTTMP/status1 $TESTTMP/status2

Set up working directory again

  $ hg -q update --clean 2
  $ hg --config extensions.purge= purge
  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 3 wc
  $ hg addremove -q --similarity 0
  $ hg forget *_*_*_*-untracked
  $ rm *_*_*_missing-*

Merge with checkunknown = warn, see that behavior is the same as before
  $ hg merge -f --tool internal:merge3 'desc("remote")' --config merge.checkunknown=warn > $TESTTMP/merge-output-2 2>&1
  [1]
  $ cmp $TESTTMP/merge-output-1 $TESTTMP/merge-output-2 || diff -U8 $TESTTMP/merge-output-1 $TESTTMP/merge-output-2