diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -2661,6 +2661,47 @@
                 drop = sorted([f for f in removed if f in m])
                 for f in drop:
                     del m[f]
+                if p2.rev() != nullrev:
+                    @util.cachefunc
+                    def mas():
+                        p1n = p1.node()
+                        p2n = p2.node()
+                        cahs = self.changelog.commonancestorsheads(p1n, p2n)
+                        if not cahs:
+                            cahs = [nullrev]
+                        return [self[r].manifest() for r in cahs]
+                    def deletionfromparent(f):
+                        # When a file is removed relative to p1 in a merge, this
+                        # function determines whether the absence is due to a
+                        # deletion from a parent, or whether the merge commit
+                        # itself deletes the file. We decide this by doing a
+                        # simplified three way merge of the manifest entry for
+                        # the file. There are two ways we decide the merge
+                        # itself didn't delete a file:
+                        # - neither parent (nor the merge) contain the file
+                        # - exactly one parent contains the file, and that
+                        #   parent has the same filelog entry as the merge
+                        #   ancestor (or all of them if there two). In other
+                        #   words, that parent left the file unchanged while the
+                        #   other one deleted it.
+                        # One way to think about this is that deleting a file is
+                        # similar to emptying it, so the list of changed files
+                        # should be similar either way. The computation
+                        # described above is not done directly in _filecommit
+                        # when creating the list of changed files, however
+                        # it does something very similar by comparing filelog
+                        # nodes.
+                        if f in m1:
+                            return (f not in m2
+                                    and all(f in ma and ma.find(f) == m1.find(f)
+                                            for ma in mas()))
+                        elif f in m2:
+                            return all(f in ma and ma.find(f) == m2.find(f)
+                                       for ma in mas())
+                        else:
+                            return True
+                    removed = [f for f in removed if not deletionfromparent(f)]
+
                 files = changed + removed
                 md = None
                 if not files:
diff --git a/tests/test-backout.t b/tests/test-backout.t
--- a/tests/test-backout.t
+++ b/tests/test-backout.t
@@ -583,12 +583,12 @@
   (branch merge, don't forget to commit)
   $ hg ci -d '4 0' -m 'merge backout of branch1'
   $ hg id
-  22149cdde76d (branch2) tip
+  d97a8500a969 (branch2) tip
   $ hg st -A
   C default
   C file2
   $ hg summary
-  parent: 4:22149cdde76d tip
+  parent: 4:d97a8500a969 tip
    merge backout of branch1
   branch: branch2
   commit: (clean)
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
@@ -649,7 +649,7 @@
   (no more unresolved files)
   $ hg ci -m 'merge bar'
   $ hg log --config diff.git=1 -pr .
-  changeset:   20:163cfd7219f7
+  changeset:   20:5aba7f3726e6
   tag:         tip
   parent:      19:30d96aeaf27b
   parent:      18:1aa437659d19
@@ -682,7 +682,7 @@
   $ 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:   21:bca52d4ed186
+  changeset:   21:4b0631ef043e
   tag:         tip
   parent:      19:30d96aeaf27b
   parent:      18:1aa437659d19
@@ -715,7 +715,7 @@
   $ hg mv zz z
   $ hg ci --amend -m 'merge bar (undo rename)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   22:12594a98ca3f
+  changeset:   22:06423be42d60
   tag:         tip
   parent:      19:30d96aeaf27b
   parent:      18:1aa437659d19
@@ -751,9 +751,9 @@
   $ echo aa >> aaa
   $ hg ci -m 'merge bar again'
   $ hg log --config diff.git=1 -pr .
-  changeset:   24:dffde028b388
+  changeset:   24:a89974a20457
   tag:         tip
-  parent:      22:12594a98ca3f
+  parent:      22:06423be42d60
   parent:      23:4c94d5bc65f5
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -800,9 +800,9 @@
   $ hg mv aaa aa
   $ hg ci --amend -m 'merge bar again (undo rename)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   25:18e3ba160489
+  changeset:   25:282080768800
   tag:         tip
-  parent:      22:12594a98ca3f
+  parent:      22:06423be42d60
   parent:      23:4c94d5bc65f5
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -843,9 +843,9 @@
   What do you want to do? c
   $ hg ci -m 'merge bar (with conflicts)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   28:b4c3035e2544
+  changeset:   28:ed15db12298d
   tag:         tip
-  parent:      27:4b216ca5ba97
+  parent:      27:eb5adec0b43b
   parent:      26:67db8847a540
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -855,9 +855,9 @@
   $ hg rm aa
   $ hg ci --amend -m 'merge bar (with conflicts, amended)'
   $ hg log --config diff.git=1 -pr .
-  changeset:   29:1205ed810051
+  changeset:   29:0eeafd043f63
   tag:         tip
-  parent:      27:4b216ca5ba97
+  parent:      27:eb5adec0b43b
   parent:      26:67db8847a540
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
@@ -974,7 +974,7 @@
   HG: M: 
   HG: A: foo
   HG: R: 
-  HG: diff -r 1205ed810051 foo
+  HG: diff -r 0eeafd043f63 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 @@
@@ -988,12 +988,12 @@
   HG: M: 
   HG: A: foo y
   HG: R: 
-  HG: diff -r 1205ed810051 foo
+  HG: diff -r 0eeafd043f63 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 1205ed810051 y
+  HG: diff -r 0eeafd043f63 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 @@
@@ -1006,18 +1006,18 @@
   HG: M: 
   HG: A: foo y
   HG: R: a
-  HG: diff -r 1205ed810051 a
+  HG: diff -r 0eeafd043f63 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 1205ed810051 foo
+  HG: diff -r 0eeafd043f63 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 1205ed810051 y
+  HG: diff -r 0eeafd043f63 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 @@
@@ -1030,23 +1030,23 @@
   HG: M: 
   HG: A: foo y
   HG: R: a x
-  HG: diff -r 1205ed810051 a
+  HG: diff -r 0eeafd043f63 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 1205ed810051 foo
+  HG: diff -r 0eeafd043f63 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 1205ed810051 x
+  HG: diff -r 0eeafd043f63 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 1205ed810051 y
+  HG: diff -r 0eeafd043f63 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 @@
@@ -1061,23 +1061,23 @@
   HG: M: 
   HG: A: foo y
   HG: R: a x
-  HG: diff -r 1205ed810051 a
+  HG: diff -r 0eeafd043f63 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 1205ed810051 foo
+  HG: diff -r 0eeafd043f63 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 1205ed810051 x
+  HG: diff -r 0eeafd043f63 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 1205ed810051 y
+  HG: diff -r 0eeafd043f63 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-convert-filemap.t b/tests/test-convert-filemap.t
--- a/tests/test-convert-filemap.t
+++ b/tests/test-convert-filemap.t
@@ -760,9 +760,8 @@
   converted/b
   x
   $ hg -R merge-test2 log -G -T '{shortest(node)} {desc}\n{files % "- {file}\n"}\n'
-  o    6eaa merge a & b
+  o    e2ff merge a & b
   |\   - converted/a
-  | |  - toberemoved
   | |
   | o  2995 add b
   | |  - converted/b
diff --git a/tests/test-convert-hg-startrev.t b/tests/test-convert-hg-startrev.t
--- a/tests/test-convert-hg-startrev.t
+++ b/tests/test-convert-hg-startrev.t
@@ -54,7 +54,7 @@
   $ glog full
   o  5 "5: change a" files: a
   |
-  o    4 "4: merge 2 and 3" files: e f
+  o    4 "4: merge 2 and 3" files: e
   |\
   | o  3 "3: change a" files: a
   | |
@@ -83,7 +83,7 @@
   $ glog full
   o  5 "5: change a" files: a
   |
-  o    4 "4: merge 2 and 3" files: e f
+  o    4 "4: merge 2 and 3" files: e
   |\
   | o  3 "3: change a" files: a
   | |
@@ -130,7 +130,7 @@
 (It seems like a bug in log that the following doesn't show rev 1.)
 
   $ hg log --follow --copies e
-  changeset:   2:82bbac3d2cf4
+  changeset:   2:8d3c3fe67bb7
   user:        test
   date:        Thu Jan 01 00:00:04 1970 +0000
   summary:     4: merge 2 and 3
diff --git a/tests/test-copies.t b/tests/test-copies.t
--- a/tests/test-copies.t
+++ b/tests/test-copies.t
@@ -202,7 +202,7 @@
   $ hg ci -m 'merge rename from p2'
   $ hg l
   @    3 merge rename from p2
-  |\   x
+  |\
   | o  2 add z
   | |  z
   o |  1 rename x to y
@@ -417,9 +417,9 @@
   created new head
   $ hg l
   @    5 merge 3 into 1
-  |\   y z
+  |\   z
   +---o  4 merge 1 into 3
-  | |/   x z
+  | |/   z
   | o  3 modify z
   | |  z
   | o  2 rename y to z
diff --git a/tests/test-glog-beautifygraph.t b/tests/test-glog-beautifygraph.t
--- a/tests/test-glog-beautifygraph.t
+++ b/tests/test-glog-beautifygraph.t
@@ -2101,7 +2101,7 @@
 
   $ hg up -q 6
   $ hg log -G --git --patch --follow-first e
-  \xe2\x97\x8d  changeset:   6:fc281d8ff18d (esc)
+  \xe2\x97\x8d  changeset:   6:9feeac35a70a (esc)
   \xe2\x94\x82\xe2\x95\xb2   tag:         tip (esc)
   \xe2\x94\x82 \xe2\x95\xa7  parent:      5:99b31f1c2782 (esc)
   \xe2\x94\x82    parent:      4:17d952250a9d (esc)
@@ -2148,7 +2148,7 @@
   $ hg log -G --template "{rev} {desc|firstline}\n"
   \xe2\x97\x8b  8 add g (esc)
   \xe2\x94\x82 (esc)
-  \xe2\x94\x82 \xe2\x97\x8b  7 Added tag foo-bar for changeset fc281d8ff18d (esc)
+  \xe2\x94\x82 \xe2\x97\x8b  7 Added tag foo-bar for changeset 9feeac35a70a (esc)
   \xe2\x94\x82\xe2\x95\xb1 (esc)
   \xe2\x97\x8b  6 merge 5 and 4 (esc)
   \xe2\x94\x82\xe2\x95\xb2 (esc)
@@ -2311,17 +2311,17 @@
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID fc281d8ff18d999ad6497b3d27390bcd695dcc73
+  # Node ID 9feeac35a70aa325519bbf3178683271113f2b8f
   # Parent  99b31f1c2782e2deb1723cef08930f70fc84b37b
   # Parent  17d952250a9d03cc3dc77b199ab60e959b9b0260
   merge 5 and 4
   
-  diff -r 99b31f1c2782 -r fc281d8ff18d dir/b
+  diff -r 99b31f1c2782 -r 9feeac35a70a dir/b
   --- a/dir/b	Thu Jan 01 00:00:00 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -a
-  diff -r 99b31f1c2782 -r fc281d8ff18d e
+  diff -r 99b31f1c2782 -r 9feeac35a70a e
   --- a/e	Thu Jan 01 00:00:00 1970 +0000
   +++ b/e	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
@@ -2331,24 +2331,24 @@
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID 02dbb8e276b8ab7abfd07cab50c901647e75c2dd
-  # Parent  fc281d8ff18d999ad6497b3d27390bcd695dcc73
-  Added tag foo-bar for changeset fc281d8ff18d
+  # Node ID 9febbb9c8b2e09670a2fb550cb1e4e01a2c7e9fd
+  # Parent  9feeac35a70aa325519bbf3178683271113f2b8f
+  Added tag foo-bar for changeset 9feeac35a70a
   
-  diff -r fc281d8ff18d -r 02dbb8e276b8 .hgtags
+  diff -r 9feeac35a70a -r 9febbb9c8b2e .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
-  +fc281d8ff18d999ad6497b3d27390bcd695dcc73 foo-bar
+  +9feeac35a70aa325519bbf3178683271113f2b8f foo-bar
   # HG changeset patch
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID 24c2e826ddebf80f9dcd60b856bdb8e6715c5449
-  # Parent  fc281d8ff18d999ad6497b3d27390bcd695dcc73
+  # Node ID 3bd4551ec3fe1c0696241f236abe857a53c6d6e7
+  # Parent  9feeac35a70aa325519bbf3178683271113f2b8f
   add g
   
-  diff -r fc281d8ff18d -r 24c2e826ddeb g
+  diff -r 9feeac35a70a -r 3bd4551ec3fe g
   --- a/g	Thu Jan 01 00:00:00 1970 +0000
   +++ b/g	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,2 +1,1 @@
@@ -2436,7 +2436,7 @@
   []
   <spanset- 0:9>
   $ hg log -G --template '{rev} {desc}\n'
-  \xe2\x97\x8b  7 Added tag foo-bar for changeset fc281d8ff18d (esc)
+  \xe2\x97\x8b  7 Added tag foo-bar for changeset 9feeac35a70a (esc)
   \xe2\x94\x82 (esc)
   \xe2\x97\x8b  6 merge 5 and 4 (esc)
   \xe2\x94\x82\xe2\x95\xb2 (esc)
@@ -2534,9 +2534,9 @@
 node template with changesetprinter:
 
   $ hg log -Gqr 5:7 --config ui.graphnodetemplate='"{rev}"'
-  7  7:02dbb8e276b8
+  7  7:9febbb9c8b2e
   \xe2\x94\x82 (esc)
-  6    6:fc281d8ff18d
+  6    6:9feeac35a70a
   \xe2\x94\x82\xe2\x95\xb2 (esc)
   \xe2\x94\x82 \xe2\x95\xa7 (esc)
   5  5:99b31f1c2782
@@ -2560,7 +2560,7 @@
 
   $ hg log -Gqr 7 --config extensions.color= --color=debug \
   > --config ui.graphnodetemplate='{label("branch.{branch}", rev)}'
-  [branch.default\xe2\x94\x827]  [log.node|7:02dbb8e276b8] (esc)
+  [branch.default\xe2\x94\x827]  [log.node|7:9febbb9c8b2e] (esc)
   \xe2\x94\x82 (esc)
   \xe2\x95\xa7 (esc)
 
diff --git a/tests/test-glog.t b/tests/test-glog.t
--- a/tests/test-glog.t
+++ b/tests/test-glog.t
@@ -1951,7 +1951,7 @@
 
   $ hg up -q 6
   $ hg log -G --git --patch --follow-first e
-  @    changeset:   6:fc281d8ff18d
+  @    changeset:   6:9feeac35a70a
   |\   tag:         tip
   | ~  parent:      5:99b31f1c2782
   |    parent:      4:17d952250a9d
@@ -1998,7 +1998,7 @@
   $ hg log -G --template "{rev} {desc|firstline}\n"
   o  8 add g
   |
-  | o  7 Added tag foo-bar for changeset fc281d8ff18d
+  | o  7 Added tag foo-bar for changeset 9feeac35a70a
   |/
   o    6 merge 5 and 4
   |\
@@ -2161,17 +2161,17 @@
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID fc281d8ff18d999ad6497b3d27390bcd695dcc73
+  # Node ID 9feeac35a70aa325519bbf3178683271113f2b8f
   # Parent  99b31f1c2782e2deb1723cef08930f70fc84b37b
   # Parent  17d952250a9d03cc3dc77b199ab60e959b9b0260
   merge 5 and 4
   
-  diff -r 99b31f1c2782 -r fc281d8ff18d dir/b
+  diff -r 99b31f1c2782 -r 9feeac35a70a dir/b
   --- a/dir/b	Thu Jan 01 00:00:00 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -a
-  diff -r 99b31f1c2782 -r fc281d8ff18d e
+  diff -r 99b31f1c2782 -r 9feeac35a70a e
   --- a/e	Thu Jan 01 00:00:00 1970 +0000
   +++ b/e	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +1,1 @@
@@ -2181,24 +2181,24 @@
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID 02dbb8e276b8ab7abfd07cab50c901647e75c2dd
-  # Parent  fc281d8ff18d999ad6497b3d27390bcd695dcc73
-  Added tag foo-bar for changeset fc281d8ff18d
+  # Node ID 9febbb9c8b2e09670a2fb550cb1e4e01a2c7e9fd
+  # Parent  9feeac35a70aa325519bbf3178683271113f2b8f
+  Added tag foo-bar for changeset 9feeac35a70a
   
-  diff -r fc281d8ff18d -r 02dbb8e276b8 .hgtags
+  diff -r 9feeac35a70a -r 9febbb9c8b2e .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
-  +fc281d8ff18d999ad6497b3d27390bcd695dcc73 foo-bar
+  +9feeac35a70aa325519bbf3178683271113f2b8f foo-bar
   # HG changeset patch
   # User test
   # Date 0 0
   #      Thu Jan 01 00:00:00 1970 +0000
-  # Node ID 24c2e826ddebf80f9dcd60b856bdb8e6715c5449
-  # Parent  fc281d8ff18d999ad6497b3d27390bcd695dcc73
+  # Node ID 3bd4551ec3fe1c0696241f236abe857a53c6d6e7
+  # Parent  9feeac35a70aa325519bbf3178683271113f2b8f
   add g
   
-  diff -r fc281d8ff18d -r 24c2e826ddeb g
+  diff -r 9feeac35a70a -r 3bd4551ec3fe g
   --- a/g	Thu Jan 01 00:00:00 1970 +0000
   +++ b/g	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,2 +1,1 @@
@@ -2286,7 +2286,7 @@
   []
   <spanset- 0:9>
   $ hg log -G --template '{rev} {desc}\n'
-  o  7 Added tag foo-bar for changeset fc281d8ff18d
+  o  7 Added tag foo-bar for changeset 9feeac35a70a
   |
   o    6 merge 5 and 4
   |\
@@ -2384,9 +2384,9 @@
 node template with changesetprinter:
 
   $ hg log -Gqr 5:7 --config ui.graphnodetemplate='"{rev}"'
-  7  7:02dbb8e276b8
+  7  7:9febbb9c8b2e
   |
-  6    6:fc281d8ff18d
+  6    6:9feeac35a70a
   |\
   | ~
   5  5:99b31f1c2782
@@ -2410,7 +2410,7 @@
 
   $ hg log -Gqr 7 --config extensions.color= --color=debug \
   > --config ui.graphnodetemplate='{label("branch.{branch}", rev)}'
-  [branch.default|7]  [log.node|7:02dbb8e276b8]
+  [branch.default|7]  [log.node|7:9febbb9c8b2e]
   |
   ~
 
diff --git a/tests/test-issue672.t b/tests/test-issue672.t
--- a/tests/test-issue672.t
+++ b/tests/test-issue672.t
@@ -60,13 +60,13 @@
     checking for directory renames
   resolving manifests
    branchmerge: True, force: False, partial: False
-   ancestor: c64f439569a9, local: e327dca35ac8+, remote: 746e9549ea96
+   ancestor: c64f439569a9, local: f4a9cff3cd0b+, remote: 746e9549ea96
    preserving 1a for resolve of 1a
   starting 4 threads for background file closing (?)
    1a: local copied/moved from 1 -> m (premerge)
   picked tool ':merge' for 1a (binary False symlink False changedelete False)
   merging 1a and 1 to 1a
-  my 1a@e327dca35ac8+ other 1@746e9549ea96 ancestor 1@c64f439569a9
+  my 1a@f4a9cff3cd0b+ other 1@746e9549ea96 ancestor 1@c64f439569a9
    premerge successful
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -82,14 +82,14 @@
     checking for directory renames
   resolving manifests
    branchmerge: True, force: False, partial: False
-   ancestor: c64f439569a9, local: 746e9549ea96+, remote: e327dca35ac8
+   ancestor: c64f439569a9, local: 746e9549ea96+, remote: f4a9cff3cd0b
    preserving 1 for resolve of 1a
   removing 1
   starting 4 threads for background file closing (?)
    1a: remote moved from 1 -> m (premerge)
   picked tool ':merge' for 1a (binary False symlink False changedelete False)
   merging 1 and 1a to 1a
-  my 1a@746e9549ea96+ other 1a@e327dca35ac8 ancestor 1@c64f439569a9
+  my 1a@746e9549ea96+ other 1a@f4a9cff3cd0b ancestor 1@c64f439569a9
    premerge successful
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
diff --git a/tests/test-lfconvert.t b/tests/test-lfconvert.t
--- a/tests/test-lfconvert.t
+++ b/tests/test-lfconvert.t
@@ -160,7 +160,7 @@
   initializing destination largefiles-repo
   $ cd largefiles-repo
   $ hg log -G --template "{rev}:{node|short}  {desc|firstline}\n"
-  o    5:8e05f5f2b77e  merge
+  o    5:9cc5aa7204f0  merge
   |\
   | o  4:a5a02de7a8e4  remove large, normal3
   | |
@@ -251,7 +251,7 @@
   3 remove large, normal3
   2 merge
   1 add anotherlarge (should be a largefile)
-  0 Added tag mytag for changeset abacddda7028
+  0 Added tag mytag for changeset 17126745edfd
   $ cd ../normal-repo
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
@@ -304,7 +304,7 @@
   3 remove large, normal3
   2 merge
   1 add anotherlarge (should be a largefile)
-  0 Added tag mytag for changeset abacddda7028
+  0 Added tag mytag for changeset 17126745edfd
 
   $ hg -R largefiles-repo-hg log -G --template "{rev}:{node|short}  {desc|firstline}\n"
   o  7:2f08f66459b7  Added tag mytag for changeset 17126745edfd
@@ -374,7 +374,7 @@
   4 remove large, normal3
   3 merge
   2 add anotherlarge (should be a largefile)
-  1 Added tag mytag for changeset abacddda7028
+  1 Added tag mytag for changeset 17126745edfd
   0 change branch name only
 
 Ensure empty commits aren't lost in the conversion
diff --git a/tests/test-merge-combination.t b/tests/test-merge-combination.t
--- a/tests/test-merge-combination.t
+++ b/tests/test-merge-combination.t
@@ -118,7 +118,7 @@
   12-- C: agree on "a"
   1-11  : hg said "", expected "a"
   1-12  : agree on "a"
-  1-1-  : hg said "a", expected ""
+  1-1-  : agree on ""
   1-21 C: agree on "a"
   1-22 C: hg said "", expected "a"
   1-23 C: agree on "a"
@@ -215,6 +215,6 @@
   $ hg merge -qr 3; echo f > u1; echo f > u2; rm -f c1 c2
   $ hg commit -qAm '5 merge with two gcas'
   $ hg log -r . -T '{files}\n' # expecting u1 u2
-  c1
+  
   $ cd ../
   $ rm -rf repo
diff --git a/tests/test-rebase-inmemory.t b/tests/test-rebase-inmemory.t
--- a/tests/test-rebase-inmemory.t
+++ b/tests/test-rebase-inmemory.t
@@ -744,7 +744,7 @@
   $ hg tglog
   @  6: 676538af172d 'untracked rename of d to e'
   |
-  | *    5: 71cb43376053 'merge'
+  | *    5: 574d92ad16fc 'merge'
   | |\
   | | x  4: 2c8b5dad7956 'rename d to e'
   | | |
@@ -758,8 +758,8 @@
   
   $ hg rebase -b 5 -d tip
   rebasing 3:ca58782ad1e4 "b"
-  rebasing 5:71cb43376053 "merge"
-  note: not rebasing 5:71cb43376053 "merge", its destination already has all its changes
+  rebasing 5:574d92ad16fc "merge"
+  note: not rebasing 5:574d92ad16fc "merge", its destination already has all its changes
 
   $ cd ..
 
diff --git a/tests/test-rebase-newancestor.t b/tests/test-rebase-newancestor.t
--- a/tests/test-rebase-newancestor.t
+++ b/tests/test-rebase-newancestor.t
@@ -108,7 +108,7 @@
   $ hg tglog
   @  7: e08089805d82 'default: f-other stuff'
   |
-  | o  6: 9455ee510502 'dev: merge default' dev
+  | o  6: 010ced67e558 'dev: merge default' dev
   |/|
   o |  5: 462860db70a1 'default: remove f-default'
   | |
@@ -136,10 +136,10 @@
   file 'f-default' was deleted in local [dest] but was modified in other [source].
   You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
   What do you want to do? c
-  rebasing 6:9455ee510502 "dev: merge default"
-  saved backup bundle to $TESTTMP/ancestor-merge/.hg/strip-backup/1d1a643d390e-43e9e04b-rebase.hg
+  rebasing 6:010ced67e558 "dev: merge default"
+  saved backup bundle to $TESTTMP/ancestor-merge/.hg/strip-backup/1d1a643d390e-4a6f6d17-rebase.hg
   $ hg tglog
-  o  6: fbc098e72227 'dev: merge default'
+  o  6: de147e4f69cf 'dev: merge default'
   |
   o  5: eda7b7f46f5d 'dev: merge default'
   |
@@ -166,10 +166,10 @@
   file 'f-default' was deleted in local [dest] but was modified in other [source].
   You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
   What do you want to do? c
-  rebasing 6:9455ee510502 "dev: merge default"
-  saved backup bundle to $TESTTMP/ancestor-merge-2/.hg/strip-backup/ec2c14fb2984-62d0b222-rebase.hg
+  rebasing 6:010ced67e558 "dev: merge default"
+  saved backup bundle to $TESTTMP/ancestor-merge-2/.hg/strip-backup/ec2c14fb2984-827d7a44-rebase.hg
   $ hg tglog
-  o  7: fbc098e72227 'dev: merge default'
+  o  7: de147e4f69cf 'dev: merge default'
   |
   o  6: eda7b7f46f5d 'dev: merge default'
   |
diff --git a/tests/test-revset.t b/tests/test-revset.t
--- a/tests/test-revset.t
+++ b/tests/test-revset.t
@@ -1721,11 +1721,9 @@
   4
   $ log 'modifies("*")'
   4
-  6
   $ log 'modifies("set:modified()")'
   4
   $ log 'id(5)'
-  2
   $ log 'only(9)'
   8
   9
@@ -1834,12 +1832,12 @@
 
 Test hexadecimal revision
   $ log 'id(2)'
-  $ log 'id(5)'
-  2
-  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'id(x5)'
-  2
-  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'x5'
-  2
+  $ log 'id(8)'
+  3
+  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'id(x8)'
+  3
+  $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'x8'
+  3
   $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'id(x)'
   $ hg --config experimental.revisions.prefixhexnode=yes log --template '{rev}\n' -r 'x'
   abort: 00changelog.i@: ambiguous identifier!
@@ -2096,7 +2094,6 @@
   2
   $ log 'removes(a)'
   2
-  6
   $ log 'roots(all())'
   0
   $ log 'reverse(2 or 3 or 4 or 5)'
@@ -2710,7 +2707,6 @@
 
   $ log 'sort(outgoing() or reverse(removes(a)), rev)'
   2
-  6
   8
   9
 
@@ -2719,7 +2715,6 @@
   $ log 'sort(outgoing() or reverse(removes(a)), -rev)'
   9
   8
-  6
   2
 
 test empty sort key which is noop
diff --git a/tests/test-revset2.t b/tests/test-revset2.t
--- a/tests/test-revset2.t
+++ b/tests/test-revset2.t
@@ -100,7 +100,6 @@
   $ log 'parents(outgoing() or removes(a))'
   1
   4
-  5
   8
 
 test that `or` operation combines elements in the right order:
@@ -805,17 +804,17 @@
 (real pair)
 
   $ hg diff -r 'tip^^' -r 'tip'
-  diff -r 2326846efdab -r 24286f4ae135 .hgtags
+  diff -r 2326846efdab -r d2e607fcf9e4 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
-  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
+  +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
   $ hg diff -r 'tip^^::tip'
-  diff -r 2326846efdab -r 24286f4ae135 .hgtags
+  diff -r 2326846efdab -r d2e607fcf9e4 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
-  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
+  +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
 
 (single rev)
 
@@ -829,13 +828,13 @@
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	* (glob)
   @@ -0,0 +1,1 @@
-  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
+  +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
   $ hg diff -r 'tip^ or tip^'
   diff -r d5d0dcbdc4d9 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	* (glob)
   @@ -0,0 +1,1 @@
-  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
+  +d5e6808a86077d6f5c1ff626d4352d01da7d2a1f 1.0
 
 (no rev)
 
@@ -1231,59 +1230,59 @@
 
 issue4553: check that revset aliases override existing hash prefix
 
-  $ hg log -qr e
-  6:e0cc66ef77e8
+  $ hg log -qr d5e
+  6:d5e6808a8607
 
-  $ hg log -qr e --config revsetalias.e="all()"
+  $ hg log -qr d5e --config revsetalias.d5e="all()"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
-  6:e0cc66ef77e8
-  7:013af1973af4
+  6:d5e6808a8607
+  7:586353d483b3
   8:d5d0dcbdc4d9
-  9:24286f4ae135
+  9:d2e607fcf9e4
 
-  $ hg log -qr e: --config revsetalias.e="0"
+  $ hg log -qr d5e: --config revsetalias.d5e="0"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
-  6:e0cc66ef77e8
-  7:013af1973af4
+  6:d5e6808a8607
+  7:586353d483b3
   8:d5d0dcbdc4d9
-  9:24286f4ae135
+  9:d2e607fcf9e4
 
-  $ hg log -qr :e --config revsetalias.e="9"
+  $ hg log -qr :d5e --config revsetalias.d5e="9"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
-  6:e0cc66ef77e8
-  7:013af1973af4
+  6:d5e6808a8607
+  7:586353d483b3
   8:d5d0dcbdc4d9
-  9:24286f4ae135
+  9:d2e607fcf9e4
 
-  $ hg log -qr e:
-  6:e0cc66ef77e8
-  7:013af1973af4
+  $ hg log -qr d5e:
+  6:d5e6808a8607
+  7:586353d483b3
   8:d5d0dcbdc4d9
-  9:24286f4ae135
+  9:d2e607fcf9e4
 
-  $ hg log -qr :e
+  $ hg log -qr :d5e
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
-  6:e0cc66ef77e8
+  6:d5e6808a8607
 
 issue2549 - correct optimizations
 
@@ -1471,7 +1470,7 @@
 (check operator priority)
 
   $ echo 'cat2n2($1, $2, $3, $4) = $1 ## $2 or $3 ## $4~2' >> .hg/hgrc
-  $ log "cat2n2(2785f5, 1eece5, 24286f, 4ae135)"
+  $ log "cat2n2(2785f5, 1eece5, d2e607, fcf9e4)"
   0
   4
 
diff --git a/tests/test-template-keywords.t b/tests/test-template-keywords.t
--- a/tests/test-template-keywords.t
+++ b/tests/test-template-keywords.t
@@ -807,13 +807,13 @@
   $ hg merge 10 -q
   $ hg ci -m 'merge'
   $ hg log -l1 -T '{files}\n'
-  a fourth
+  
   $ hg log -l1 -T '{file_mods}\n'
   
   $ hg log -l1 -T '{file_adds}\n'
   
   $ hg log -l1 -T '{file_dels}\n'
-  a fourth
+  
 
 Test file copies dict: