# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2014-08-27 16:35:34
# Node ID bdc0e04df243d3995c7266bf7d138fddd0449ba6
# Parent  5678b0e3608f397d125bb38f389f1ebf8ff79c7d
# Parent  0c838e7459a55726d3f55b29b0d7b26ca4ada2cb

merge with stable

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -651,6 +651,9 @@ def tryimportone(ui, repo, hunk, parents
                     p2 = repo[nullid]
             except error.RepoError:
                 p1, p2 = parents
+            if p2.node() == nullid:
+                ui.warn(_("warning: import the patch as a normal revision\n"
+                          "(use --exact to import the patch as a merge)\n"))
         else:
             p1, p2 = parents
 
@@ -911,9 +914,10 @@ class changeset_printer(object):
             self.ui.write(_("phase:       %s\n") % _(ctx.phasestr()),
                           label='log.phase')
         for parent in parents:
+            label = 'log.parent changeset.%s' % self.repo[parent[0]].phasestr()
             # i18n: column positioning for "hg log"
             self.ui.write(_("parent:      %d:%s\n") % parent,
-                          label='log.parent changeset.%s' % ctx.phasestr())
+                          label=label)
 
         if self.ui.debugflag:
             mnode = ctx.manifestnode()
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -3221,14 +3221,23 @@ def graft(ui, repo, *revs, **opts):
             ctx = repo[rev]
             n = ctx.extra().get('source')
             if n in ids:
-                r = repo[n].rev()
+                try:
+                    r = repo[n].rev()
+                except error.RepoLookupError:
+                    r = None
                 if r in revs:
                     ui.warn(_('skipping revision %s (already grafted to %s)\n')
                             % (r, rev))
                     revs.remove(r)
                 elif ids[n] in revs:
-                    ui.warn(_('skipping already grafted revision %s '
-                                '(%s also has origin %d)\n') % (ids[n], rev, r))
+                    if r is None:
+                        ui.warn(_('skipping already grafted revision %s '
+                                  '(%s also has unknown origin %s)\n')
+                                % (ids[n], rev, n))
+                    else:
+                        ui.warn(_('skipping already grafted revision %s '
+                                  '(%s also has origin %d)\n')
+                                % (ids[n], rev, r))
                     revs.remove(ids[n])
             elif ctx.hex() in ids:
                 r = ids[ctx.hex()]
diff --git a/tests/test-graft.t b/tests/test-graft.t
--- a/tests/test-graft.t
+++ b/tests/test-graft.t
@@ -678,3 +678,14 @@ graft --continue after --force
   grafting revision 28
   $ cat a
   abc
+
+Continue testing same origin policy, using revision numbers from test above
+but do some destructive editing of the repo:
+
+  $ hg up -qC 7
+  $ hg tag -l -r 13 tmp
+  $ hg --config extensions.mq= strip 2
+  saved backup bundle to $TESTTMP/a/.hg/strip-backup/5c095ad7e90f-backup.hg (glob)
+  $ hg graft tmp
+  skipping already grafted revision 8 (2 also has unknown origin 5c095ad7e90f871700f02dd1fa5012cb4498a2d4)
+  [255]
diff --git a/tests/test-import-merge.t b/tests/test-import-merge.t
--- a/tests/test-import-merge.t
+++ b/tests/test-import-merge.t
@@ -72,6 +72,8 @@ Test without --exact and diff.p1 != work
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg import ../merge.diff
   applying ../merge.diff
+  warning: import the patch as a normal revision
+  (use --exact to import the patch as a merge)
   $ tipparents
   2:890ecaa90481 addc
   $ hg strip --no-backup tip
@@ -105,6 +107,8 @@ Test with --bypass and diff.p1 != workin
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg import --bypass ../merge.diff
   applying ../merge.diff
+  warning: import the patch as a normal revision
+  (use --exact to import the patch as a merge)
   $ tipparents
   2:890ecaa90481 addc
   $ hg strip --no-backup tip