cmdutil: stop pretending we can calculate revs for graphlog lazily
cmdutil.getgraphlogrevs does a ton of work trying to build a graphlog lazily,
and then cmdutil.graphlog comes along and destroys all of that.
graphmod.dagwalker requires that it be given the full list of revs upfront so
that it can perform filtering and tests against known revs.
For a repository with over 400,000 changesets, this speeds up graphlog by
around 0.02 seconds (~20% with a small limit).
$ 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):
src: 'a' -> dst: 'b' *
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):
src: 'a' -> dst: 'b' *
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):
src: 'a' -> dst: 'b' *
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):
src: 'a' -> dst: 'b' *
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):
src: 'a' -> dst: 'b'
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):
src: 'a' -> dst: 'b'
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):
src: 'a' -> dst: 'b'
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):
src: 'a' -> dst: 'b'
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):
src: 'a' -> dst: 'c' !
src: 'a' -> dst: 'b' !
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):
src: 'a' -> dst: 'b' *
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):
src: 'a' -> dst: 'b' *
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):
src: 'a' -> dst: 'b' *
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
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$ cd ..