Closed by commit rHG1b8fd4af3318: mergestate: store about files resolved in 
favour of other (authored by pulkit).
This revision was automatically updated to reflect the committed changes.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST UPDATE
  https://phab.mercurial-scm.org/D8392?vs=21024&id=21026

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D8392/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D8392

AFFECTED FILES
  mercurial/commands.py
  mercurial/localrepo.py
  mercurial/merge.py
  tests/test-convert-hg-source.t
  tests/test-copies-chain-merge.t

CHANGE DETAILS

diff --git a/tests/test-copies-chain-merge.t b/tests/test-copies-chain-merge.t
--- a/tests/test-copies-chain-merge.t
+++ b/tests/test-copies-chain-merge.t
@@ -319,7 +319,7 @@
   (branch merge, don't forget to commit)
   $ hg ci -m 'mBDm-0 simple merge - one way'
   $ hg up 'desc("d-2")'
-  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 'desc("b-1")'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -348,7 +348,6 @@
   M d
   $ hg status --copies --rev 'desc("d-2")' --rev 'desc("mBDm-0")'
   M b
-  M d
   $ hg status --copies --rev 'desc("d-2")' --rev 'desc("mDBm-0")'
   M b
   $ hg status --copies --rev 'desc("i-2")' --rev 'desc("mBDm-0")'
@@ -361,7 +360,7 @@
 The bugs makes recorded copy is different depending of where we started the 
merge from since
 
   $ hg manifest --debug --rev 'desc("mBDm-0")' | grep '644   d'
-  0bb5445dc4d02f4e0d86cf16f9f3a411d0f17744 644   d
+  b004912a8510032a0350a74daa2803dadfb00e12 644   d
   $ hg manifest --debug --rev 'desc("mDBm-0")' | grep '644   d'
   b004912a8510032a0350a74daa2803dadfb00e12 644   d
 
@@ -378,21 +377,13 @@
      rev linkrev nodeid       p1           p2
        0       2 01c2f5eabdc4 000000000000 000000000000
        1       8 b004912a8510 000000000000 000000000000
-       2      17 0bb5445dc4d0 01c2f5eabdc4 b004912a8510
 
 (This `hg log` output if wrong, since no merge actually happened).
 
   $ hg log -Gfr 'desc("mBDm-0")' d
-  o    17 mBDm-0 simple merge - one way
-  |\
-  o :  8 d-2 re-add d
-  :/
-  o  2 i-2: c -move-> d
+  o  8 d-2 re-add d
   |
-  o  1 i-1: a -move-> c
-  |
-  o  0 i-0 initial commit: a b h
-  
+  ~
 
 This `hg log` output is correct
 
@@ -404,7 +395,6 @@
   $ hg status --copies --rev 'desc("i-0")' --rev 'desc("mBDm-0")'
   M b
   A d
-    a
   R a
   $ hg status --copies --rev 'desc("i-0")' --rev 'desc("mDBm-0")'
   M b
@@ -525,8 +515,7 @@
      rev linkrev nodeid       p1           p2
        0       2 01c2f5eabdc4 000000000000 000000000000
        1       8 b004912a8510 000000000000 000000000000
-       2      17 0bb5445dc4d0 01c2f5eabdc4 b004912a8510
-       3      22 c72365ee036f 000000000000 000000000000
+       2      22 c72365ee036f 000000000000 000000000000
   $ hg up 'desc("b-1")'
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 'desc("f-2")'
@@ -534,7 +523,7 @@
   (branch merge, don't forget to commit)
   $ hg ci -m 'mBFm-0 simple merge - one way'
   $ hg up 'desc("f-2")'
-  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg merge 'desc("b-1")'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
@@ -562,7 +551,7 @@
   $ hg status --copies --rev 'desc("i-0")' --rev 'desc("mBFm-0")'
   M b
   A d
-    a (true !)
+    h
     h (false !)
   R a
   R h
@@ -577,7 +566,6 @@
   R h
   $ hg status --copies --rev 'desc("f-2")' --rev 'desc("mBFm-0")'
   M b
-  M d
   $ hg status --copies --rev 'desc("f-1")' --rev 'desc("mBFm-0")'
   M b
   M d
@@ -595,16 +583,10 @@
 The following graphlog is wrong, the "a -> c -> d" chain was overwritten and 
should not appear.
 
   $ hg log -Gfr 'desc("mBFm-0")' d
-  o    23 mBFm-0 simple merge - one way
-  |\
-  o :  22 f-2: rename i -> d
-  | :
-  o :  21 f-1: rename h -> i
-  :/
-  o  2 i-2: c -move-> d
+  o  22 f-2: rename i -> d
   |
-  o  1 i-1: a -move-> c
-  |
+  o  21 f-1: rename h -> i
+  :
   o  0 i-0 initial commit: a b h
   
 
diff --git a/tests/test-convert-hg-source.t b/tests/test-convert-hg-source.t
--- a/tests/test-convert-hg-source.t
+++ b/tests/test-convert-hg-source.t
@@ -62,9 +62,9 @@
   6 make bar and baz copies of foo
   5 merge local copy
   4 merge remote copy
-  3 Added tag that for changeset 88586c4e9f02
+  3 Added tag that for changeset 8601262d7472
   2 Removed tag that
-  1 Added tag this for changeset c56a7f387039
+  1 Added tag this for changeset 706614b458c1
   0 mark baz executable
   updating bookmarks
   $ cd new
@@ -76,7 +76,7 @@
 #if execbit
   $ hg bookmarks
      premerge1                 3:973ef48a98a4
-     premerge2                 8:91d107c423ba
+     premerge2                 8:c4968fdf2e5d
 #else
 Different hash because no x bit
   $ hg bookmarks
@@ -96,19 +96,19 @@
   6 make bar and baz copies of foo
   5 merge local copy
   4 merge remote copy
-  3 Added tag that for changeset 88586c4e9f02
+  3 Added tag that for changeset 8601262d7472
   2 Removed tag that
-  1 Added tag this for changeset c56a7f387039
+  1 Added tag this for changeset 706614b458c1
   0 mark baz executable
   updating bookmarks
   $ hg -R new log -G -T '{rev} {desc}'
   o  8 mark baz executable
   |
-  o  7 Added tag this for changeset c56a7f387039
+  o  7 Added tag this for changeset 706614b458c1
   |
   o  6 Removed tag that
   |
-  o  5 Added tag that for changeset 88586c4e9f02
+  o  5 Added tag that for changeset 8601262d7472
   |
   o    4 merge remote copy
   |\
diff --git a/mercurial/merge.py b/mercurial/merge.py
--- a/mercurial/merge.py
+++ b/mercurial/merge.py
@@ -64,6 +64,7 @@
 RECORD_OVERRIDE = b't'
 RECORD_UNSUPPORTED_MANDATORY = b'X'
 RECORD_UNSUPPORTED_ADVISORY = b'x'
+RECORD_RESOLVED_OTHER = b'R'
 
 MERGE_DRIVER_STATE_UNMARKED = b'u'
 MERGE_DRIVER_STATE_MARKED = b'm'
@@ -74,6 +75,9 @@
 MERGE_RECORD_UNRESOLVED_PATH = b'pu'
 MERGE_RECORD_RESOLVED_PATH = b'pr'
 MERGE_RECORD_DRIVER_RESOLVED = b'd'
+# represents that the file was automatically merged in favor
+# of other version. This info is used on commit.
+MERGE_RECORD_MERGED_OTHER = b'o'
 
 ACTION_FORGET = b'f'
 ACTION_REMOVE = b'r'
@@ -91,6 +95,8 @@
 ACTION_KEEP = b'k'
 ACTION_EXEC = b'e'
 ACTION_CREATED_MERGE = b'cm'
+# GET the other/remote side and store this info in mergestate
+ACTION_GET_OTHER_AND_STORE = b'gs'
 
 
 class mergestate(object):
@@ -227,6 +233,7 @@
                 RECORD_CHANGEDELETE_CONFLICT,
                 RECORD_PATH_CONFLICT,
                 RECORD_MERGE_DRIVER_MERGE,
+                RECORD_RESOLVED_OTHER,
             ):
                 bits = record.split(b'\0')
                 self._state[bits[0]] = bits[1:]
@@ -453,6 +460,10 @@
                 records.append(
                     (RECORD_PATH_CONFLICT, b'\0'.join([filename] + v))
                 )
+            elif v[0] == MERGE_RECORD_MERGED_OTHER:
+                records.append(
+                    (RECORD_RESOLVED_OTHER, b'\0'.join([filename] + v))
+                )
             elif v[1] == nullhex or v[6] == nullhex:
                 # Change/Delete or Delete/Change conflicts. These are stored in
                 # 'C' records. v[1] is the local file, and is nullhex when the
@@ -551,6 +562,10 @@
         self._state[path] = [MERGE_RECORD_UNRESOLVED_PATH, frename, forigin]
         self._dirty = True
 
+    def addmergedother(self, path):
+        self._state[path] = [MERGE_RECORD_MERGED_OTHER, nullhex, nullhex]
+        self._dirty = True
+
     def __contains__(self, dfile):
         return dfile in self._state
 
@@ -594,6 +609,8 @@
         """rerun merge process for file path `dfile`"""
         if self[dfile] in (MERGE_RECORD_RESOLVED, 
MERGE_RECORD_DRIVER_RESOLVED):
             return True, 0
+        if self._state[dfile][0] == MERGE_RECORD_MERGED_OTHER:
+            return True, 0
         stateentry = self._state[dfile]
         state, localkey, lfile, afile, anode, ofile, onode, flags = stateentry
         octx = self._repo[self._other]
@@ -1209,7 +1226,7 @@
     narrowed.
     """
     nooptypes = {b'k'}  # TODO: handle with nonconflicttypes
-    nonconflicttypes = set(b'a am c cm f g r e'.split())
+    nonconflicttypes = set(b'a am c cm f g gs r e'.split())
     # We mutate the items in the dict during iteration, so iterate
     # over a copy.
     for f, action in list(actions.items()):
@@ -1348,14 +1365,22 @@
                         )
                     else:
                         actions[f] = (
-                            ACTION_GET,
+                            ACTION_GET_OTHER_AND_STORE
+                            if branchmerge
+                            else ACTION_GET,
                             (fl2, False),
                             b'remote is newer',
                         )
                 elif nol and n2 == a:  # remote only changed 'x'
                     actions[f] = (ACTION_EXEC, (fl2,), b'update permissions')
                 elif nol and n1 == a:  # local only changed 'x'
-                    actions[f] = (ACTION_GET, (fl1, False), b'remote is newer')
+                    actions[f] = (
+                        ACTION_GET_OTHER_AND_STORE
+                        if branchmerge
+                        else ACTION_GET,
+                        (fl1, False),
+                        b'remote is newer',
+                    )
                 else:  # both changed something
                     actions[f] = (
                         ACTION_MERGE,
@@ -1588,6 +1613,8 @@
 
             for f, a in sorted(pycompat.iteritems(actions)):
                 m, args, msg = a
+                if m == ACTION_GET_OTHER_AND_STORE:
+                    m = ACTION_GET
                 repo.ui.debug(b' %s: %s -> %s\n' % (f, msg, m))
                 if f in fbids:
                     d = fbids[f]
@@ -1813,6 +1840,7 @@
             ACTION_KEEP,
             ACTION_PATH_CONFLICT,
             ACTION_PATH_CONFLICT_RESOLVE,
+            ACTION_GET_OTHER_AND_STORE,
         )
     }
 
@@ -1835,6 +1863,11 @@
 
     updated, merged, removed = 0, 0, 0
     ms = mergestate.clean(repo, wctx.p1().node(), mctx.node(), labels)
+
+    # add ACTION_GET_OTHER_AND_STORE to mergestate
+    for e in actions[ACTION_GET_OTHER_AND_STORE]:
+        ms.addmergedother(e[0])
+
     moves = []
     for m, l in actions.items():
         l.sort()
@@ -2415,6 +2448,7 @@
                     ACTION_EXEC,
                     ACTION_REMOVE,
                     ACTION_PATH_CONFLICT_RESOLVE,
+                    ACTION_GET_OTHER_AND_STORE,
                 ):
                     msg = _(b"conflicting changes")
                     hint = _(b"commit or update --clean to discard changes")
@@ -2477,6 +2511,10 @@
                 actions[m] = []
             actions[m].append((f, args, msg))
 
+        # ACTION_GET_OTHER_AND_STORE is a ACTION_GET + store in mergestate
+        for e in actions[ACTION_GET_OTHER_AND_STORE]:
+            actions[ACTION_GET].append(e)
+
         if not util.fscasesensitive(repo.path):
             # check collision between files only in p2 for clean update
             if not branchmerge and (
diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -2855,6 +2855,14 @@
                 fparent1, fparent2 = fparent2, nullid
             elif fparent2 in fparentancestors:
                 fparent2 = nullid
+            elif not fparentancestors:
+                # TODO: this whole if-else might be simplified much more
+                ms = mergemod.mergestate.read(self)
+                if (
+                    fname in ms
+                    and ms[fname] == mergemod.MERGE_RECORD_MERGED_OTHER
+                ):
+                    fparent1, fparent2 = fparent2, nullid
 
         # is the file changed?
         text = fctx.data()
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -5955,6 +5955,8 @@
             if not m(f):
                 continue
 
+            if ms[f] == mergemod.MERGE_RECORD_MERGED_OTHER:
+                continue
             label, key = mergestateinfo[ms[f]]
             fm.startitem()
             fm.context(ctx=wctx)
@@ -6002,6 +6004,9 @@
 
             didwork = True
 
+            if ms[f] == mergemod.MERGE_RECORD_MERGED_OTHER:
+                continue
+
             # don't let driver-resolved files be marked, and run the conclude
             # step if asked to resolve
             if ms[f] == mergemod.MERGE_RECORD_DRIVER_RESOLVED:



To: pulkit, #hg-reviewers, marmoute, durin42, martinvonz
Cc: durin42, martinvonz, marmoute, mercurial-devel
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