tests/test-rename-merge2.t

subrepo: append subrepo path to subrepo error messages

This change appends the subrepo path to subrepo errors. That is, when there
is an error performing an operation a subrepo, rather than displaying a message
such as:

pushing subrepo MYSUBREPO to PATH
searching for changes
abort: push creates new remote head HEADHASH!
hint: did you forget to merge? use push -f to force

mercurial will show:

pushing subrepo MYSUBREPO to PATH
searching for changes
abort: push creates new remote head HEADHASH! (in subrepo MYSUBREPO)
hint: did you forget to merge? use push -f to force

The rationale for this change is that the current error messages make it hard
for TortoiseHg (and similar tools) to tell the user which subrepo caused the
push failure.

The "(in subrepo MYSUBREPO)" message has been added to those subrepo methods
were it made sense (by using a decorator). We avoid appending "(in subrepo XXX)"
multiple times when subrepos are nexted by throwing a "SubrepoAbort" exception
after the extra message is appended. The decorator will then "ignore" (i.e. just
re-raise) the exception and never add the message again.

A small drawback of this method is that part of the exception trace is lost when
the exception is catched and re-raised by the annotatesubrepoerror decorator.

Also, because the state() function already printed the subrepo path when it
threw an error, that error has been changed to avoid duplicating the subrepo
path in the error message.

Note that I have also updated several subrepo related tests to reflect these
changes.

  $ mkdir -p t
  $ cd t
  $ cat <<EOF > merge
  > import sys, os
  > f = open(sys.argv[1], "wb")
  > f.write("merge %s %s %s" % (sys.argv[1], sys.argv[2], sys.argv[3]))
  > f.close()
  > EOF

perform a test merge with possible renaming
args:
$1 = action in local branch
$2 = action in remote branch
$3 = action in working dir
$4 = expected result

  $ tm()
  > {
  >     hg init t
  >     cd t
  >     echo "[merge]" >> .hg/hgrc
  >     echo "followcopies = 1" >> .hg/hgrc
  > 
  >     # base
  >     echo base > a
  >     echo base > rev # used to force commits
  >     hg add a rev
  >     hg ci -m "base"
  > 
  >     # remote
  >     echo remote > rev
  >     if [ "$2" != "" ] ; then $2 ; fi
  >     hg ci -m "remote"
  > 
  >     # local
  >     hg co -q 0
  >     echo local > rev
  >     if [ "$1" != "" ] ; then $1 ; fi
  >     hg ci -m "local"
  > 
  >     # working dir
  >     echo local > rev
  >     if [ "$3" != "" ] ; then $3 ; fi
  > 
  >     # merge
  >     echo "--------------"
  >     echo "test L:$1 R:$2 W:$3 - $4"
  >     echo "--------------"
  >     hg merge -y --debug --traceback --tool="python ../merge"
  > 
  >     echo "--------------"
  >     hg status -camC -X rev
  > 
  >     hg ci -m "merge"
  > 
  >     echo "--------------"
  >     echo
  > 
  >     cd ..
  >     rm -r t
  > }
  $ up() {
  >     cp rev $1
  >     hg add $1 2> /dev/null
  >     if [ "$2" != "" ] ; then
  >         cp rev $2
  >         hg add $2 2> /dev/null
  >     fi
  > }
  $ uc() { up $1; hg cp $1 $2; } # update + copy
  $ um() { up $1; hg mv $1 $2; }
  $ nc() { hg cp $1 $2; } # just copy
  $ nm() { hg mv $1 $2; } # just move
  $ tm "up a  " "nc a b" "      " "1  get local a to b"
  created new head
  --------------
  test L:up a   R:nc a b W:       - 1  get local a to b
  --------------
    searching for copies back to rev 1
    unmatched files in other:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: e300d1c794ec+, remote: 4ce40f5aca24
   rev: versions differ -> m
   a: remote copied to b -> m
  preserving a for resolve of b
  preserving rev for resolve of rev
  updating: a 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging a and b to b
  my b@e300d1c794ec+ other b@4ce40f5aca24 ancestor a@924404dff337
   premerge successful
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@e300d1c794ec+ other rev@4ce40f5aca24 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
    a
  C a
  --------------
  
  $ tm "nc a b" "up a  " "      " "2  get rem change to a and b"
  created new head
  --------------
  test L:nc a b R:up a   W:       - 2  get rem change to a and b
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 86a2aa42fc76+, remote: f4db7e329e71
   a: remote is newer -> g
   b: local copied/moved to a -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  getting a
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b and a to b
  my b@86a2aa42fc76+ other a@f4db7e329e71 ancestor a@924404dff337
   premerge successful
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@86a2aa42fc76+ other rev@f4db7e329e71 ancestor rev@924404dff337
  1 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M a
  M b
    a
  --------------
  
  $ tm "up a  " "nm a b" "      " "3  get local a change to b, remove a"
  created new head
  --------------
  test L:up a   R:nm a b W:       - 3  get local a change to b, remove a
  --------------
    searching for copies back to rev 1
    unmatched files in other:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: e300d1c794ec+, remote: bdb19105162a
   rev: versions differ -> m
   a: remote moved to b -> m
  preserving a for resolve of b
  preserving rev for resolve of rev
  removing a
  updating: a 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging a and b to b
  my b@e300d1c794ec+ other b@bdb19105162a ancestor a@924404dff337
   premerge successful
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@e300d1c794ec+ other rev@bdb19105162a ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
    a
  --------------
  
  $ tm "nm a b" "up a  " "      " "4  get remote change to b"
  created new head
  --------------
  test L:nm a b R:up a   W:       - 4  get remote change to b
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 02963e448370+, remote: f4db7e329e71
   b: local copied/moved to a -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: b 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b and a to b
  my b@02963e448370+ other a@f4db7e329e71 ancestor a@924404dff337
   premerge successful
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@02963e448370+ other rev@f4db7e329e71 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
    a
  --------------
  
  $ tm "      " "nc a b" "      " "5  get b"
  created new head
  --------------
  test L:       R:nc a b W:       - 5  get b
  --------------
    searching for copies back to rev 1
    unmatched files in other:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a 
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 94b33a1b7f2d+, remote: 4ce40f5aca24
   rev: versions differ -> m
   b: remote created -> g
  preserving rev for resolve of rev
  updating: b 1/2 files (50.00%)
  getting b
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@94b33a1b7f2d+ other rev@4ce40f5aca24 ancestor rev@924404dff337
  1 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  C a
  --------------
  
  $ tm "nc a b" "      " "      " "6  nothing"
  created new head
  --------------
  test L:nc a b R:       W:       - 6  nothing
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a 
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 86a2aa42fc76+, remote: 97c705ade336
   rev: versions differ -> m
  preserving rev for resolve of rev
  updating: rev 1/1 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@86a2aa42fc76+ other rev@97c705ade336 ancestor rev@924404dff337
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  C a
  C b
  --------------
  
  $ tm "      " "nm a b" "      " "7  get b"
  created new head
  --------------
  test L:       R:nm a b W:       - 7  get b
  --------------
    searching for copies back to rev 1
    unmatched files in other:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a 
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 94b33a1b7f2d+, remote: bdb19105162a
   a: other deleted -> r
   rev: versions differ -> m
   b: remote created -> g
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  removing a
  updating: b 2/3 files (66.67%)
  getting b
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@94b33a1b7f2d+ other rev@bdb19105162a ancestor rev@924404dff337
  1 files updated, 1 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  --------------
  
  $ tm "nm a b" "      " "      " "8  nothing"
  created new head
  --------------
  test L:nm a b R:       W:       - 8  nothing
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a 
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 02963e448370+, remote: 97c705ade336
   rev: versions differ -> m
  preserving rev for resolve of rev
  updating: rev 1/1 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@02963e448370+ other rev@97c705ade336 ancestor rev@924404dff337
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  C b
  --------------
  
  $ tm "um a b" "um a b" "      " "9  do merge with ancestor in a"
  created new head
  --------------
  test L:um a b R:um a b W:       - 9  do merge with ancestor in a
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 62e7bf090eba+, remote: 49b6d8032493
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: b 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@62e7bf090eba+ other b@49b6d8032493 ancestor a@924404dff337
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@62e7bf090eba+ other rev@49b6d8032493 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  --------------
  

m "um a c" "um x c" "      " "10 do merge with no ancestor"

  $ tm "nm a b" "nm a c" "      " "11 get c, keep b"
  created new head
  --------------
  test L:nm a b R:nm a c W:       - 11 get c, keep b
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    unmatched files in other:
     c
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     c -> a !
     b -> a !
    checking for directory renames
   a: divergent renames -> dr
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 02963e448370+, remote: fe905ef2c33e
   rev: versions differ -> m
   c: remote created -> g
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  note: possible conflict - a was renamed multiple times to:
   b
   c
  updating: c 2/3 files (66.67%)
  getting c
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@02963e448370+ other rev@fe905ef2c33e ancestor rev@924404dff337
  1 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M c
  C b
  --------------
  
  $ tm "nc a b" "up b  " "      " "12 merge b no ancestor"
  created new head
  --------------
  test L:nc a b R:up b   W:       - 12 merge b no ancestor
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 86a2aa42fc76+, remote: af30c7647fc7
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: b 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@86a2aa42fc76+ other b@af30c7647fc7 ancestor b@000000000000
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@86a2aa42fc76+ other rev@af30c7647fc7 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  C a
  --------------
  
  $ tm "up b  " "nm a b" "      " "13 merge b no ancestor"
  created new head
  --------------
  test L:up b   R:nm a b W:       - 13 merge b no ancestor
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 59318016310c+, remote: bdb19105162a
   a: other deleted -> r
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  removing a
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@59318016310c+ other b@bdb19105162a ancestor b@000000000000
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@59318016310c+ other rev@bdb19105162a ancestor rev@924404dff337
  0 files updated, 2 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  --------------
  
  $ tm "nc a b" "up a b" "      " "14 merge b no ancestor"
  created new head
  --------------
  test L:nc a b R:up a b W:       - 14 merge b no ancestor
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 86a2aa42fc76+, remote: 8dbce441892a
   a: remote is newer -> g
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  getting a
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@86a2aa42fc76+ other b@8dbce441892a ancestor b@000000000000
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@86a2aa42fc76+ other rev@8dbce441892a ancestor rev@924404dff337
  1 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M a
  M b
  --------------
  
  $ tm "up b  " "nm a b" "      " "15 merge b no ancestor, remove a"
  created new head
  --------------
  test L:up b   R:nm a b W:       - 15 merge b no ancestor, remove a
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 59318016310c+, remote: bdb19105162a
   a: other deleted -> r
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  removing a
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@59318016310c+ other b@bdb19105162a ancestor b@000000000000
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@59318016310c+ other rev@bdb19105162a ancestor rev@924404dff337
  0 files updated, 2 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  --------------
  
  $ tm "nc a b" "up a b" "      " "16 get a, merge b no ancestor"
  created new head
  --------------
  test L:nc a b R:up a b W:       - 16 get a, merge b no ancestor
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 86a2aa42fc76+, remote: 8dbce441892a
   a: remote is newer -> g
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  getting a
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@86a2aa42fc76+ other b@8dbce441892a ancestor b@000000000000
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@86a2aa42fc76+ other rev@8dbce441892a ancestor rev@924404dff337
  1 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M a
  M b
  --------------
  
  $ tm "up a b" "nc a b" "      " "17 keep a, merge b no ancestor"
  created new head
  --------------
  test L:up a b R:nc a b W:       - 17 keep a, merge b no ancestor
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 0b76e65c8289+, remote: 4ce40f5aca24
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: b 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@0b76e65c8289+ other b@4ce40f5aca24 ancestor b@000000000000
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@0b76e65c8289+ other rev@4ce40f5aca24 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  C a
  --------------
  
  $ tm "nm a b" "up a b" "      " "18 merge b no ancestor"
  created new head
  --------------
  test L:nm a b R:up a b W:       - 18 merge b no ancestor
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 02963e448370+, remote: 8dbce441892a
   b: versions differ -> m
   rev: versions differ -> m
  remote changed a which local deleted
  use (c)hanged version or leave (d)eleted? c
   a: prompt recreating -> g
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  getting a
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@02963e448370+ other b@8dbce441892a ancestor b@000000000000
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@02963e448370+ other rev@8dbce441892a ancestor rev@924404dff337
  1 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M a
  M b
  --------------
  
  $ tm "up a b" "nm a b" "      " "19 merge b no ancestor, prompt remove a"
  created new head
  --------------
  test L:up a b R:nm a b W:       - 19 merge b no ancestor, prompt remove a
  --------------
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 0b76e65c8289+, remote: bdb19105162a
   local changed a which remote deleted
  use (c)hanged version or (d)elete? c
   a: prompt keep -> a
   b: versions differ -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: a 1/3 files (33.33%)
  updating: b 2/3 files (66.67%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b
  my b@0b76e65c8289+ other b@bdb19105162a ancestor b@000000000000
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@0b76e65c8289+ other rev@bdb19105162a ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
  C a
  --------------
  
  $ tm "up a  " "um a b" "      " "20 merge a and b to b, remove a"
  created new head
  --------------
  test L:up a   R:um a b W:       - 20 merge a and b to b, remove a
  --------------
    searching for copies back to rev 1
    unmatched files in other:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: e300d1c794ec+, remote: 49b6d8032493
   rev: versions differ -> m
   a: remote moved to b -> m
  preserving a for resolve of b
  preserving rev for resolve of rev
  removing a
  updating: a 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging a and b to b
  my b@e300d1c794ec+ other b@49b6d8032493 ancestor a@924404dff337
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@e300d1c794ec+ other rev@49b6d8032493 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
    a
  --------------
  
  $ tm "um a b" "up a  " "      " "21 merge a and b to b"
  created new head
  --------------
  test L:um a b R:up a   W:       - 21 merge a and b to b
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 62e7bf090eba+, remote: f4db7e329e71
   b: local copied/moved to a -> m
   rev: versions differ -> m
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: b 1/2 files (50.00%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b and a to b
  my b@62e7bf090eba+ other a@f4db7e329e71 ancestor a@924404dff337
  updating: rev 2/2 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@62e7bf090eba+ other rev@f4db7e329e71 ancestor rev@924404dff337
  0 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
    a
  --------------
  

m "nm a b" "um x a" "      " "22 get a, keep b"

  $ tm "nm a b" "up a c" "      " "23 get c, keep b"
  created new head
  --------------
  test L:nm a b R:up a c W:       - 23 get c, keep b
  --------------
    searching for copies back to rev 1
    unmatched files in local:
     b
    unmatched files in other:
     c
    all copies found (* = to merge, ! = divergent, % = renamed and deleted):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 924404dff337, local: 02963e448370+, remote: 2b958612230f
   b: local copied/moved to a -> m
   rev: versions differ -> m
   c: remote created -> g
  preserving b for resolve of b
  preserving rev for resolve of rev
  updating: b 1/3 files (33.33%)
  picked tool 'python ../merge' for b (binary False symlink False)
  merging b and a to b
  my b@02963e448370+ other a@2b958612230f ancestor a@924404dff337
   premerge successful
  updating: c 2/3 files (66.67%)
  getting c
  updating: rev 3/3 files (100.00%)
  picked tool 'python ../merge' for rev (binary False symlink False)
  merging rev
  my rev@02963e448370+ other rev@2b958612230f ancestor rev@924404dff337
  1 files updated, 2 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  --------------
  M b
    a
  M c
  --------------
  

  $ cd ..