diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -5532,7 +5532,9 @@ def merge(ui, repo, node=None, **opts):
         # ui.forcemerge is an internal variable, do not document
         repo.ui.setconfig('ui', 'forcemerge', opts.get('tool', ''), 'merge')
         force = opts.get('force')
-        return hg.merge(repo, node, force=force, mergeforce=force)
+        labels = ['working copy', 'merge rev']
+        return hg.merge(repo, node, force=force, mergeforce=force,
+                        labels=labels)
     finally:
         ui.setconfig('ui', 'forcemerge', '', 'merge')
 
diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -768,10 +768,11 @@ def updatetotally(ui, repo, checkout, br
 
     return ret
 
-def merge(repo, node, force=None, remind=True, mergeforce=False):
+def merge(repo, node, force=None, remind=True, mergeforce=False, labels=None):
     """Branch merge with node, resolving changes. Return true if any
     unresolved conflicts."""
-    stats = mergemod.update(repo, node, True, force, mergeforce=mergeforce)
+    stats = mergemod.update(repo, node, True, force, mergeforce=mergeforce,
+                            labels=labels)
     _showstats(repo, stats)
     if stats[3]:
         repo.ui.status(_("use 'hg resolve' to retry unresolved file merges "
diff --git a/tests/test-commit-amend.t b/tests/test-commit-amend.t
--- a/tests/test-commit-amend.t
+++ b/tests/test-commit-amend.t
@@ -638,7 +638,7 @@ Amend a merge changeset (with renames an
   (no more unresolved files)
   $ hg ci -m 'merge bar'
   $ hg log --config diff.git=1 -pr .
-  changeset:   23:93cd4445f720
+  changeset:   23:69c24fe01e35
   tag:         tip
   parent:      22:30d96aeaf27b
   parent:      21:1aa437659d19
@@ -653,11 +653,11 @@ Amend a merge changeset (with renames an
   --- a/cc
   +++ b/cc
   @@ -1,1 +1,5 @@
-  +<<<<<<< local: 30d96aeaf27b - test: aa
+  +<<<<<<< working copy: 30d96aeaf27b - test: aa
    dd
   +=======
   +cc
-  +>>>>>>> other: 1aa437659d19  bar - test: aazzcc
+  +>>>>>>> merge rev:    1aa437659d19  bar - test: aazzcc
   diff --git a/z b/zz
   rename from z
   rename to zz
@@ -671,7 +671,7 @@ Amend a merge changeset (with renames an
   $ HGEDITOR="sh .hg/checkeditform.sh" hg ci --amend -m 'merge bar (amend message)' --edit
   HGEDITFORM=commit.amend.merge
   $ hg log --config diff.git=1 -pr .
-  changeset:   24:832b50f2c271
+  changeset:   24:cfa2fbef3169
   tag:         tip
   parent:      22:30d96aeaf27b
   parent:      21:1aa437659d19
@@ -686,11 +686,11 @@ Amend a merge changeset (with renames an
   --- a/cc
   +++ b/cc
   @@ -1,1 +1,5 @@
-  +<<<<<<< local: 30d96aeaf27b - test: aa
+  +<<<<<<< working copy: 30d96aeaf27b - test: aa
    dd
   +=======
   +cc
-  +>>>>>>> other: 1aa437659d19  bar - test: aazzcc
+  +>>>>>>> merge rev:    1aa437659d19  bar - test: aazzcc
   diff --git a/z b/zz
   rename from z
   rename to zz
@@ -704,7 +704,7 @@ Amend a merge changeset (with renames an
   $ hg mv zz z
   $ hg ci --amend -m 'merge bar (undo rename)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   26:bdafc5c72f74
+  changeset:   26:c34de68b014c
   tag:         tip
   parent:      22:30d96aeaf27b
   parent:      21:1aa437659d19
@@ -719,11 +719,11 @@ Amend a merge changeset (with renames an
   --- a/cc
   +++ b/cc
   @@ -1,1 +1,5 @@
-  +<<<<<<< local: 30d96aeaf27b - test: aa
+  +<<<<<<< working copy: 30d96aeaf27b - test: aa
    dd
   +=======
   +cc
-  +>>>>>>> other: 1aa437659d19  bar - test: aazzcc
+  +>>>>>>> merge rev:    1aa437659d19  bar - test: aazzcc
   
   $ hg debugrename z
   z not renamed
@@ -740,9 +740,9 @@ Amend a merge changeset (with renames du
   $ echo aa >> aaa
   $ hg ci -m 'merge bar again'
   $ hg log --config diff.git=1 -pr .
-  changeset:   28:32f19415b634
+  changeset:   28:37d40dcef03b
   tag:         tip
-  parent:      26:bdafc5c72f74
+  parent:      26:c34de68b014c
   parent:      27:4c94d5bc65f5
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -775,9 +775,9 @@ Amend a merge changeset (with renames du
   $ hg mv aaa aa
   $ hg ci --amend -m 'merge bar again (undo rename)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   30:1e2a06b3d312
+  changeset:   30:537c6d1b3633
   tag:         tip
-  parent:      26:bdafc5c72f74
+  parent:      26:c34de68b014c
   parent:      27:4c94d5bc65f5
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -813,13 +813,13 @@ Amend a merge changeset (with manifest-l
   $ hg merge -q bar --config ui.interactive=True << EOF
   > c
   > EOF
-  local changed aa which other deleted
+  local [working copy] changed aa which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? c
   $ hg ci -m 'merge bar (with conflicts)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   33:97a298b0c59f
+  changeset:   33:7afcba911942
   tag:         tip
-  parent:      32:3d78ce4226b8
+  parent:      32:6075d69d215d
   parent:      31:67db8847a540
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -829,9 +829,9 @@ Amend a merge changeset (with manifest-l
   $ hg rm aa
   $ hg ci --amend -m 'merge bar (with conflicts, amended)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   35:6de0c1bde1c8
+  changeset:   35:376965e47ddd
   tag:         tip
-  parent:      32:3d78ce4226b8
+  parent:      32:6075d69d215d
   parent:      31:67db8847a540
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -927,7 +927,7 @@ Test that "diff()" in committemplate wor
   HG: M: 
   HG: A: foo
   HG: R: 
-  HG: diff -r 6de0c1bde1c8 foo
+  HG: diff -r 376965e47ddd foo
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
@@ -941,12 +941,12 @@ Test that "diff()" in committemplate wor
   HG: M: 
   HG: A: foo y
   HG: R: 
-  HG: diff -r 6de0c1bde1c8 foo
+  HG: diff -r 376965e47ddd foo
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
   HG: +foo
-  HG: diff -r 6de0c1bde1c8 y
+  HG: diff -r 376965e47ddd y
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/y	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
@@ -959,18 +959,18 @@ Test that "diff()" in committemplate wor
   HG: M: 
   HG: A: foo y
   HG: R: a
-  HG: diff -r 6de0c1bde1c8 a
+  HG: diff -r 376965e47ddd a
   HG: --- a/a	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -1,2 +0,0 @@
   HG: -a
   HG: -a
-  HG: diff -r 6de0c1bde1c8 foo
+  HG: diff -r 376965e47ddd foo
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
   HG: +foo
-  HG: diff -r 6de0c1bde1c8 y
+  HG: diff -r 376965e47ddd y
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/y	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
@@ -983,23 +983,23 @@ Test that "diff()" in committemplate wor
   HG: M: 
   HG: A: foo y
   HG: R: a x
-  HG: diff -r 6de0c1bde1c8 a
+  HG: diff -r 376965e47ddd a
   HG: --- a/a	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -1,2 +0,0 @@
   HG: -a
   HG: -a
-  HG: diff -r 6de0c1bde1c8 foo
+  HG: diff -r 376965e47ddd foo
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
   HG: +foo
-  HG: diff -r 6de0c1bde1c8 x
+  HG: diff -r 376965e47ddd x
   HG: --- a/x	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -1,1 +0,0 @@
   HG: -x
-  HG: diff -r 6de0c1bde1c8 y
+  HG: diff -r 376965e47ddd y
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/y	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
@@ -1014,23 +1014,23 @@ Test that "diff()" in committemplate wor
   HG: M: 
   HG: A: foo y
   HG: R: a x
-  HG: diff -r 6de0c1bde1c8 a
+  HG: diff -r 376965e47ddd a
   HG: --- a/a	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -1,2 +0,0 @@
   HG: -a
   HG: -a
-  HG: diff -r 6de0c1bde1c8 foo
+  HG: diff -r 376965e47ddd foo
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
   HG: +foo
-  HG: diff -r 6de0c1bde1c8 x
+  HG: diff -r 376965e47ddd x
   HG: --- a/x	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -1,1 +0,0 @@
   HG: -x
-  HG: diff -r 6de0c1bde1c8 y
+  HG: diff -r 376965e47ddd y
   HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   HG: +++ b/y	Thu Jan 01 00:00:00 1970 +0000
   HG: @@ -0,0 +1,1 @@
diff --git a/tests/test-conflict.t b/tests/test-conflict.t
--- a/tests/test-conflict.t
+++ b/tests/test-conflict.t
@@ -49,13 +49,13 @@
   1
   2
   3
-  <<<<<<< local: 618808747361 - test: branch2
+  <<<<<<< working copy: 618808747361 - test: branch2
   6
   8
   =======
   4
   5
-  >>>>>>> other: c0c68e4fe667  - test: branch1
+  >>>>>>> merge rev:    c0c68e4fe667  - test: branch1
   Hop we are done.
 
   $ hg status
@@ -79,13 +79,13 @@ Verify custom conflict markers
   1
   2
   3
-  <<<<<<< local: test 2
+  <<<<<<< working copy: test 2
   6
   8
   =======
   4
   5
-  >>>>>>> other: test 1
+  >>>>>>> merge rev:    test 1
   Hop we are done.
 
 Verify line splitting of custom conflict marker which causes multiple lines
@@ -105,13 +105,13 @@ Verify line splitting of custom conflict
   1
   2
   3
-  <<<<<<< local: test 2
+  <<<<<<< working copy: test 2
   6
   8
   =======
   4
   5
-  >>>>>>> other: test 1
+  >>>>>>> merge rev:    test 1
   Hop we are done.
 
 Verify line trimming of custom conflict marker using multi-byte characters
@@ -144,13 +144,13 @@ Verify line trimming of custom conflict 
   1
   2
   3
-  <<<<<<< local: 123456789012345678901234567890123456789012345678901234567890\xe3\x81\x82... (esc)
+  <<<<<<< working copy: 1234567890123456789012345678901234567890123456789012345...
   6
   8
   =======
   4
   5
-  >>>>>>> other: branch1
+  >>>>>>> merge rev:    branch1
   Hop we are done.
 
 Verify basic conflict markers
@@ -170,13 +170,13 @@ Verify basic conflict markers
   1
   2
   3
-  <<<<<<< local
+  <<<<<<< working copy
   6
   8
   =======
   4
   5
-  >>>>>>> other
+  >>>>>>> merge rev
   Hop we are done.
 
 internal:merge3
@@ -191,7 +191,7 @@ internal:merge3
   [1]
   $ cat a
   Small Mathematical Series.
-  <<<<<<< local
+  <<<<<<< working copy
   1
   2
   3
@@ -209,7 +209,7 @@ internal:merge3
   3
   4
   5
-  >>>>>>> other
+  >>>>>>> merge rev
   Hop we are done.
 
 Add some unconflicting changes on each head, to make sure we really
diff --git a/tests/test-keyword.t b/tests/test-keyword.t
--- a/tests/test-keyword.t
+++ b/tests/test-keyword.t
@@ -1113,11 +1113,11 @@ conflict: keyword should stay outside co
   [1]
   $ cat m
   $Id$
-  <<<<<<< local: 88a80c8d172e - test: 8bar
+  <<<<<<< working copy: 88a80c8d172e - test: 8bar
   bar
   =======
   foo
-  >>>>>>> other: 85d2d2d732a5  - test: simplemerge
+  >>>>>>> merge rev:    85d2d2d732a5  - test: simplemerge
 
 resolve to local, m must contain hash of last change (local parent)
 
diff --git a/tests/test-merge-changedelete.t b/tests/test-merge-changedelete.t
--- a/tests/test-merge-changedelete.t
+++ b/tests/test-merge-changedelete.t
@@ -54,9 +54,9 @@ Make sure HGMERGE doesn't interfere with
 Non-interactive merge:
 
   $ hg merge -y
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? u
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
   merging file3
   warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
@@ -77,6 +77,9 @@ Non-interactive merge:
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -100,11 +103,11 @@ Non-interactive merge:
   changed
   --- file3 ---
   3
-  <<<<<<< local: 13910f48cf7b - test: changed file1, removed file2, changed file3
+  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
   changed2
   =======
   changed1
-  >>>>>>> other: 10f9a0a634e8  - test: removed file1, changed file2, changed file3
+  >>>>>>> merge rev:    10f9a0a634e8  - test: removed file1, changed file2, cha...
 
 
 Interactive merge:
@@ -117,9 +120,9 @@ Interactive merge:
   > c
   > d
   > EOF
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? c
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? d
   merging file3
   warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
@@ -140,6 +143,9 @@ Interactive merge:
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -161,11 +167,11 @@ Interactive merge:
   *** file2 does not exist
   --- file3 ---
   3
-  <<<<<<< local: 13910f48cf7b - test: changed file1, removed file2, changed file3
+  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
   changed2
   =======
   changed1
-  >>>>>>> other: 10f9a0a634e8  - test: removed file1, changed file2, changed file3
+  >>>>>>> merge rev:    10f9a0a634e8  - test: removed file1, changed file2, cha...
 
 
 Interactive merge with bad input:
@@ -181,18 +187,18 @@ Interactive merge with bad input:
   > baz
   > c
   > EOF
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? foo
   unrecognized response
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? bar
   unrecognized response
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? d
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? baz
   unrecognized response
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? c
   merging file3
   warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
@@ -213,6 +219,9 @@ Interactive merge with bad input:
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -234,11 +243,11 @@ Interactive merge with bad input:
   changed
   --- file3 ---
   3
-  <<<<<<< local: 13910f48cf7b - test: changed file1, removed file2, changed file3
+  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
   changed2
   =======
   changed1
-  >>>>>>> other: 10f9a0a634e8  - test: removed file1, changed file2, changed file3
+  >>>>>>> merge rev:    10f9a0a634e8  - test: removed file1, changed file2, cha...
 
 
 Interactive merge with not enough input:
@@ -250,9 +259,9 @@ Interactive merge with not enough input:
   $ hg merge --config ui.interactive=true <<EOF
   > d
   > EOF
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? d
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
   merging file3
   warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
@@ -273,6 +282,9 @@ Interactive merge with not enough input:
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -294,11 +306,11 @@ Interactive merge with not enough input:
   changed
   --- file3 ---
   3
-  <<<<<<< local: 13910f48cf7b - test: changed file1, removed file2, changed file3
+  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
   changed2
   =======
   changed1
-  >>>>>>> other: 10f9a0a634e8  - test: removed file1, changed file2, changed file3
+  >>>>>>> merge rev:    10f9a0a634e8  - test: removed file1, changed file2, cha...
 
 Choose local versions of files
 
@@ -322,6 +334,9 @@ Choose local versions of files
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -367,6 +382,9 @@ Choose other versions of files
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -413,6 +431,9 @@ Fail
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -445,12 +466,12 @@ Force prompts with no input (should be s
   1 other heads for branch "default"
 
   $ hg merge --config ui.interactive=True --tool :prompt
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? 
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
   no tool found to merge file3
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   0 files updated, 0 files merged, 0 files removed, 3 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
@@ -467,6 +488,9 @@ Force prompts with no input (should be s
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -501,12 +525,12 @@ Force prompts
   1 other heads for branch "default"
 
   $ hg merge --tool :prompt
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? u
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
   no tool found to merge file3
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? u
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? u
   0 files updated, 0 files merged, 0 files removed, 3 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
@@ -523,6 +547,9 @@ Force prompts
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -555,9 +582,9 @@ Choose to merge all files
   1 other heads for branch "default"
 
   $ hg merge --tool :merge3
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? u
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
   merging file3
   warning: conflicts while merging file3! (edit, then use 'hg resolve --mark')
@@ -577,6 +604,9 @@ Choose to merge all files
   * version 2 records
   local: 13910f48cf7bdb2a0ba6e24b4900e4fdd5739dd4
   other: 10f9a0a634e82080907e62f075ab119cbc565ea6
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = ab57bf49aa276a22d35a473592d4c34b5abc3eff)
   file: file1 (record type "C", state "u", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
@@ -600,12 +630,12 @@ Choose to merge all files
   changed
   --- file3 ---
   3
-  <<<<<<< local: 13910f48cf7b - test: changed file1, removed file2, changed file3
+  <<<<<<< working copy: 13910f48cf7b - test: changed file1, removed file2, chan...
   changed2
   ||||||| base
   =======
   changed1
-  >>>>>>> other: 10f9a0a634e8  - test: removed file1, changed file2, changed file3
+  >>>>>>> merge rev:    10f9a0a634e8  - test: removed file1, changed file2, cha...
 
 Exercise transitions between local, other, fail and prompt, and make sure the
 dirstate stays consistent. (Compare with each other and to the above
@@ -642,12 +672,12 @@ invocations.)
   (status identical)
   
   === :other -> :prompt ===
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? 
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
   no tool found to merge file3
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   --- diff of status ---
   (status identical)
   
@@ -671,12 +701,12 @@ invocations.)
   (status identical)
   
   === :local -> :prompt ===
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? 
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
   no tool found to merge file3
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   --- diff of status ---
   (status identical)
   
@@ -690,12 +720,12 @@ invocations.)
   (status identical)
   
   === :fail -> :prompt ===
-  local changed file1 which other deleted
+  local [working copy] changed file1 which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? 
-  other changed file2 which local deleted
+  other [merge rev] changed file2 which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? 
   no tool found to merge file3
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   --- diff of status ---
   (status identical)
   
diff --git a/tests/test-merge-force.t b/tests/test-merge-force.t
--- a/tests/test-merge-force.t
+++ b/tests/test-merge-force.t
@@ -142,55 +142,55 @@ Merge with remote
 #   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 changed content1_missing_content1_content4-tracked which other deleted
+  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 changed content1_missing_content3_content3-tracked which other deleted
+  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 changed content1_missing_content3_content4-tracked which other deleted
+  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 changed content1_missing_missing_content4-tracked which other deleted
+  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 changed content1_content2_content1_content1-untracked which local deleted
+  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 changed content1_content2_content1_content2-untracked which local deleted
+  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 changed content1_content2_content1_content4-untracked which local deleted
+  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 changed content1_content2_content1_missing-tracked which local deleted
+  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 changed content1_content2_content1_missing-untracked which local deleted
+  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 changed content1_content2_content2_content1-untracked which local deleted
+  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 changed content1_content2_content2_content2-untracked which local deleted
+  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 changed content1_content2_content2_content4-untracked which local deleted
+  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 changed content1_content2_content2_missing-tracked which local deleted
+  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 changed content1_content2_content2_missing-untracked which local deleted
+  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 changed content1_content2_content3_content1-untracked which local deleted
+  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 changed content1_content2_content3_content2-untracked which local deleted
+  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 changed content1_content2_content3_content3-untracked which local deleted
+  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 changed content1_content2_content3_content4-untracked which local deleted
+  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 changed content1_content2_content3_missing-tracked which local deleted
+  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 changed content1_content2_content3_missing-untracked which local deleted
+  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 changed content1_content2_missing_content1-untracked which local deleted
+  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 changed content1_content2_missing_content2-untracked which local deleted
+  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 changed content1_content2_missing_content4-untracked which local deleted
+  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 changed content1_content2_missing_missing-tracked which local deleted
+  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 changed content1_content2_missing_missing-untracked which local deleted
+  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
@@ -373,13 +373,13 @@ the remote side did not touch the file
   content2
   
   M content1_content2_content1_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   content1
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M content1_content2_content1_content4-untracked
   content2
@@ -403,13 +403,13 @@ the remote side did not touch the file
   content2
   
   M content1_content2_content2_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   content1
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M content1_content2_content2_content4-untracked
   content2
@@ -433,25 +433,25 @@ the remote side did not touch the file
   content2
   
   M content1_content2_content3_content3-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content3
   ||||||| base
   content1
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M content1_content2_content3_content3-untracked
   content2
   
   M content1_content2_content3_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   content1
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M content1_content2_content3_content4-untracked
   content2
@@ -475,13 +475,13 @@ the remote side did not touch the file
   content2
   
   M content1_content2_missing_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   content1
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M content1_content2_missing_content4-untracked
   content2
@@ -559,12 +559,12 @@ the remote side did not touch the file
   content2
   
   M missing_content2_content2_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M missing_content2_content2_content4-untracked
   content2
@@ -582,23 +582,23 @@ the remote side did not touch the file
   content2
   
   M missing_content2_content3_content3-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content3
   ||||||| base
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M missing_content2_content3_content3-untracked
   content2
   
   M missing_content2_content3_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M missing_content2_content3_content4-untracked
   content2
@@ -616,20 +616,20 @@ the remote side did not touch the file
   content2
   
   M missing_content2_missing_content4-tracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M missing_content2_missing_content4-untracked
-  <<<<<<< local: 0447570f1af6 - test: local
+  <<<<<<< working copy: 0447570f1af6 - test: local
   content4
   ||||||| base
   =======
   content2
-  >>>>>>> other: 85100b8c675b  - test: remote
+  >>>>>>> merge rev:    85100b8c675b  - test: remote
   
   M missing_content2_missing_missing-tracked
   content2
@@ -703,63 +703,63 @@ Re-resolve and check status
   (no more unresolved files)
   $ hg resolve --unmark --all
   $ hg resolve --all --tool internal:merge3
-  other changed content1_content2_content1_content1-untracked which local deleted
+  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 changed content1_content2_content1_content2-untracked which local deleted
+  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 changed content1_content2_content1_content4-untracked which local deleted
+  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 changed content1_content2_content1_missing-tracked which local deleted
+  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 changed content1_content2_content1_missing-untracked which local deleted
+  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 changed content1_content2_content2_content1-untracked which local deleted
+  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 changed content1_content2_content2_content2-untracked which local deleted
+  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 changed content1_content2_content2_content4-untracked which local deleted
+  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 changed content1_content2_content2_missing-tracked which local deleted
+  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 changed content1_content2_content2_missing-untracked which local deleted
+  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 changed content1_content2_content3_content1-untracked which local deleted
+  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 changed content1_content2_content3_content2-untracked which local deleted
+  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 changed content1_content2_content3_content3-untracked which local deleted
+  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 changed content1_content2_content3_content4-untracked which local deleted
+  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 changed content1_content2_content3_missing-tracked which local deleted
+  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 changed content1_content2_content3_missing-untracked which local deleted
+  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 changed content1_content2_missing_content1-untracked which local deleted
+  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 changed content1_content2_missing_content2-untracked which local deleted
+  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 changed content1_content2_missing_content4-untracked which local deleted
+  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 changed content1_content2_missing_missing-tracked which local deleted
+  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 changed content1_content2_missing_missing-untracked which local deleted
+  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 changed content1_missing_content1_content4-tracked which other deleted
+  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 changed content1_missing_content3_content3-tracked which other deleted
+  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 changed content1_missing_content3_content4-tracked which other deleted
+  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 changed content1_missing_missing_content4-tracked which other deleted
+  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
diff --git a/tests/test-merge-remove.t b/tests/test-merge-remove.t
--- a/tests/test-merge-remove.t
+++ b/tests/test-merge-remove.t
@@ -102,7 +102,7 @@ Merge should not overwrite local file th
 Those who use force will lose
 
   $ hg merge -f
-  other changed bar which local deleted
+  other [merge rev] changed bar which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
   merging foo1 and foo to foo1
   0 files updated, 1 files merged, 0 files removed, 1 files unresolved
diff --git a/tests/test-merge-tools.t b/tests/test-merge-tools.t
--- a/tests/test-merge-tools.t
+++ b/tests/test-merge-tools.t
@@ -75,11 +75,11 @@ running from a devel copy, not a temp in
   [1]
   $ aftermerge
   # cat f
-  <<<<<<< local: ef83787e2614  - test: revision 1
+  <<<<<<< working copy: ef83787e2614  - test: revision 1
   revision 1
   =======
   revision 2
-  >>>>>>> other: 0185f4e0cf02  - test: revision 2
+  >>>>>>> merge rev:    0185f4e0cf02  - test: revision 2
   space
   # hg stat
   M f
@@ -532,7 +532,7 @@ ui.merge specifies internal:prompt:
   # hg update -C 1
   $ hg merge -r 2 --config ui.merge=internal:prompt
   no tool found to merge f
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? u
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? u
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
@@ -557,7 +557,7 @@ ui.merge specifies :prompt, with 'leave 
   > u
   > EOF
   no tool found to merge f
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? u
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? u
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
@@ -580,7 +580,7 @@ prompt with EOF
   # hg update -C 1
   $ hg merge -r 2 --config ui.merge=internal:prompt --config ui.interactive=true
   no tool found to merge f
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
   [1]
@@ -594,7 +594,7 @@ prompt with EOF
   U f
   $ hg resolve --all --config ui.merge=internal:prompt --config ui.interactive=true
   no tool found to merge f
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   [1]
   $ aftermerge
   # cat f
@@ -608,7 +608,7 @@ prompt with EOF
   $ rm f
   $ hg resolve --all --config ui.merge=internal:prompt --config ui.interactive=true
   no tool found to merge f
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? 
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? 
   [1]
   $ aftermerge
   # cat f
@@ -620,7 +620,7 @@ prompt with EOF
   U f
   $ hg resolve --all --config ui.merge=internal:prompt
   no tool found to merge f
-  keep (l)ocal, take (o)ther, or leave (u)nresolved? u
+  keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved? u
   [1]
   $ aftermerge
   # cat f
@@ -935,12 +935,12 @@ premerge=keep keeps conflict markers in:
   # hg update -C 1
   $ hg merge -r 4 --config merge-tools.true.premerge=keep
   merging f
-  <<<<<<< local: ef83787e2614  - test: revision 1
+  <<<<<<< working copy: ef83787e2614  - test: revision 1
   revision 1
   space
   =======
   revision 4
-  >>>>>>> other: 81448d39c9a0 - test: revision 4
+  >>>>>>> merge rev:    81448d39c9a0 - test: revision 4
   revision 0
   space
   revision 4
@@ -948,12 +948,12 @@ premerge=keep keeps conflict markers in:
   (branch merge, don't forget to commit)
   $ aftermerge
   # cat f
-  <<<<<<< local: ef83787e2614  - test: revision 1
+  <<<<<<< working copy: ef83787e2614  - test: revision 1
   revision 1
   space
   =======
   revision 4
-  >>>>>>> other: 81448d39c9a0 - test: revision 4
+  >>>>>>> merge rev:    81448d39c9a0 - test: revision 4
   # hg stat
   M f
   # hg resolve --list
@@ -969,7 +969,7 @@ premerge=keep-merge3 keeps conflict mark
   # hg update -C 1
   $ hg merge -r 4 --config merge-tools.true.premerge=keep-merge3
   merging f
-  <<<<<<< local: ef83787e2614  - test: revision 1
+  <<<<<<< working copy: ef83787e2614  - test: revision 1
   revision 1
   space
   ||||||| base
@@ -977,7 +977,7 @@ premerge=keep-merge3 keeps conflict mark
   space
   =======
   revision 4
-  >>>>>>> other: 81448d39c9a0 - test: revision 4
+  >>>>>>> merge rev:    81448d39c9a0 - test: revision 4
   revision 0
   space
   revision 4
@@ -985,7 +985,7 @@ premerge=keep-merge3 keeps conflict mark
   (branch merge, don't forget to commit)
   $ aftermerge
   # cat f
-  <<<<<<< local: ef83787e2614  - test: revision 1
+  <<<<<<< working copy: ef83787e2614  - test: revision 1
   revision 1
   space
   ||||||| base
@@ -993,7 +993,7 @@ premerge=keep-merge3 keeps conflict mark
   space
   =======
   revision 4
-  >>>>>>> other: 81448d39c9a0 - test: revision 4
+  >>>>>>> merge rev:    81448d39c9a0 - test: revision 4
   # hg stat
   M f
   # hg resolve --list
diff --git a/tests/test-merge-types.t b/tests/test-merge-types.t
--- a/tests/test-merge-types.t
+++ b/tests/test-merge-types.t
@@ -356,18 +356,18 @@ h: l vs l, different
   U h
   $ tellmeabout a
   a is a plain file with content:
-  <<<<<<< local: 0139c5610547 - test: 2
+  <<<<<<< working copy: 0139c5610547 - test: 2
   2
   =======
   1
-  >>>>>>> other: 97e29675e796  - test: 1
+  >>>>>>> merge rev:    97e29675e796  - test: 1
   $ tellmeabout b
   b is a plain file with content:
-  <<<<<<< local: 0139c5610547 - test: 2
+  <<<<<<< working copy: 0139c5610547 - test: 2
   2
   =======
   1
-  >>>>>>> other: 97e29675e796  - test: 1
+  >>>>>>> merge rev:    97e29675e796  - test: 1
   $ tellmeabout c
   c is a plain file with content:
   x
@@ -409,18 +409,18 @@ h: l vs l, different
   [1]
   $ tellmeabout a
   a is a plain file with content:
-  <<<<<<< local: 97e29675e796  - test: 1
+  <<<<<<< working copy: 97e29675e796  - test: 1
   1
   =======
   2
-  >>>>>>> other: 0139c5610547 - test: 2
+  >>>>>>> merge rev:    0139c5610547 - test: 2
   $ tellmeabout b
   b is an executable file with content:
-  <<<<<<< local: 97e29675e796  - test: 1
+  <<<<<<< working copy: 97e29675e796  - test: 1
   1
   =======
   2
-  >>>>>>> other: 0139c5610547 - test: 2
+  >>>>>>> merge rev:    0139c5610547 - test: 2
   $ tellmeabout c
   c is an executable file with content:
   x
diff --git a/tests/test-merge7.t b/tests/test-merge7.t
--- a/tests/test-merge7.t
+++ b/tests/test-merge7.t
@@ -99,11 +99,11 @@ pull and merge from test-a again
 
   $ cat test.txt
   one
-  <<<<<<< local: 50c3a7e29886  - test: Merge 1
+  <<<<<<< working copy: 50c3a7e29886  - test: Merge 1
   two-point-five
   =======
   two-point-one
-  >>>>>>> other: 40d11a4173a8 - test: two -> two-point-one
+  >>>>>>> merge rev:    40d11a4173a8 - test: two -> two-point-one
   three
 
   $ hg debugindex test.txt
diff --git a/tests/test-rename-dir-merge.t b/tests/test-rename-dir-merge.t
--- a/tests/test-rename-dir-merge.t
+++ b/tests/test-rename-dir-merge.t
@@ -144,11 +144,11 @@ and committed in local target directory.
   C b/a
   C b/b
   $ cat b/c
-  <<<<<<< local: f1c50ca4f127 - test: new file in target directory
+  <<<<<<< working copy: f1c50ca4f127 - test: new file in target directory
   target
   =======
   baz
-  >>>>>>> other: ce36d17b18fb  - test: 2 add a/c
+  >>>>>>> merge rev:    ce36d17b18fb  - test: 2 add a/c
   $ rm b/c.orig
 
 Remote directory rename with conflicting file added in remote target directory
@@ -177,11 +177,11 @@ and committed in local source directory.
   ? a/d
   ? b/c.orig
   $ cat b/c
-  <<<<<<< local: ce36d17b18fb  - test: 2 add a/c
+  <<<<<<< working copy: ce36d17b18fb  - test: 2 add a/c
   baz
   =======
   target
-  >>>>>>> other: f1c50ca4f127 - test: new file in target directory
+  >>>>>>> merge rev:    f1c50ca4f127 - test: new file in target directory
 
 Second scenario with two repos:
 
diff --git a/tests/test-rename-merge2.t b/tests/test-rename-merge2.t
--- a/tests/test-rename-merge2.t
+++ b/tests/test-rename-merge2.t
@@ -694,7 +694,7 @@ m "um a c" "um x c" "      " "10 do merg
   starting 4 threads for background file closing (?)
    a: prompt deleted/changed -> m (premerge)
   picked tool ':prompt' for a (binary False symlink False changedelete True)
-  other changed a which local deleted
+  other [merge rev] changed a which local [working copy] deleted
   use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
    b: both created -> m (premerge)
   picked tool 'python ../merge' for b (binary False symlink False changedelete False)
@@ -739,7 +739,7 @@ m "um a c" "um x c" "      " "10 do merg
   starting 4 threads for background file closing (?)
    a: prompt changed/deleted -> m (premerge)
   picked tool ':prompt' for a (binary False symlink False changedelete True)
-  local changed a which other deleted
+  local [working copy] changed a which other [merge rev] deleted
   use (c)hanged version, (d)elete, or leave (u)nresolved? u
    b: both created -> m (premerge)
   picked tool 'python ../merge' for b (binary False symlink False changedelete False)
diff --git a/tests/test-resolve.t b/tests/test-resolve.t
--- a/tests/test-resolve.t
+++ b/tests/test-resolve.t
@@ -290,6 +290,9 @@ insert unsupported advisory merge record
   * version 2 records
   local: 57653b9f834a4493f7240b0681efcb9ae7cab745
   other: dc77451844e37f03f5c559e3b8529b2b48d381d1
+  labels:
+    local: working copy
+    other: merge rev
   unrecognized entry: x	advisory record
   file extras: file1 (ancestorlinknode = 99726c03216e233810a2564cbc0adfe395007eac)
   file: file1 (record type "F", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
@@ -312,6 +315,9 @@ insert unsupported mandatory merge recor
   * version 2 records
   local: 57653b9f834a4493f7240b0681efcb9ae7cab745
   other: dc77451844e37f03f5c559e3b8529b2b48d381d1
+  labels:
+    local: working copy
+    other: merge rev
   file extras: file1 (ancestorlinknode = 99726c03216e233810a2564cbc0adfe395007eac)
   file: file1 (record type "F", state "r", hash 60b27f004e454aca81b0480209cce5081ec52390)
     local path: file1 (flags "")
diff --git a/tests/test-subrepo-git.t b/tests/test-subrepo-git.t
--- a/tests/test-subrepo-git.t
+++ b/tests/test-subrepo-git.t
@@ -171,7 +171,7 @@ user a pulls, merges, commits
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg merge 2>/dev/null
    subrepository s diverged (local revision: 7969594, remote revision: aa84837)
-  (M)erge, keep (l)ocal or keep (r)emote? m
+  (M)erge, keep (l)ocal [working copy] or keep (r)emote [merge rev]? m
   pulling subrepo s from $TESTTMP/gitroot
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
diff --git a/tests/test-subrepo.t b/tests/test-subrepo.t
--- a/tests/test-subrepo.t
+++ b/tests/test-subrepo.t
@@ -304,7 +304,7 @@ merge tests
     subrepo t: both sides changed 
    subrepository t diverged (local revision: 20a0db6fbf6c, remote revision: 7af322bc1198)
   starting 4 threads for background file closing (?)
-  (M)erge, keep (l)ocal or keep (r)emote? m
+  (M)erge, keep (l)ocal [working copy] or keep (r)emote [merge rev]? m
   merging subrepo t
     searching for copies back to rev 2
   resolving manifests
@@ -349,7 +349,7 @@ 11: remove subrepo t
 local removed, remote changed, keep changed
 
   $ hg merge 6
-   remote changed subrepository s which local removed
+   remote [merge rev] changed subrepository s which local [working copy] removed
   use (c)hanged version or (d)elete? c
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -380,7 +380,7 @@ local removed, remote changed, keep remo
   $ hg merge --config ui.interactive=true 6 <<EOF
   > d
   > EOF
-   remote changed subrepository s which local removed
+   remote [merge rev] changed subrepository s which local [working copy] removed
   use (c)hanged version or (d)elete? d
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -404,7 +404,7 @@ local changed, remote removed, keep chan
   $ hg co -C 6
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 11
-   local changed subrepository s which remote removed
+   local [working copy] changed subrepository s which remote [merge rev] removed
   use (c)hanged version or (d)elete? c
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -436,7 +436,7 @@ local changed, remote removed, keep remo
   $ hg merge --config ui.interactive=true 11 <<EOF
   > d
   > EOF
-   local changed subrepository s which remote removed
+   local [working copy] changed subrepository s which remote [merge rev] removed
   use (c)hanged version or (d)elete? d
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -860,7 +860,7 @@ shouldn't need merging
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 4    # try to merge default into br again
    subrepository s diverged (local revision: f8f13b33206e, remote revision: a3f9062a4f88)
-  (M)erge, keep (l)ocal or keep (r)emote? m
+  (M)erge, keep (l)ocal [working copy] or keep (r)emote [merge rev]? m
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ cd ..