diff --git a/i18n/pt_BR.po b/i18n/pt_BR.po
--- a/i18n/pt_BR.po
+++ b/i18n/pt_BR.po
@@ -22581,6 +22581,9 @@ msgstr "o caminho %r percorre o link simbólico %r"
 msgid "could not symlink to %r: %s"
 msgstr "impossível criar link simbólico para %r: %s"
 
+msgid "empty revision range"
+msgstr "faixa de revisões vazia"
+
 #, python-format
 msgid "recording removal of %s as rename to %s (%d%% similar)\n"
 msgstr "gravando remoção de %s como renomeação para %s (%d%% de similaridade)\n"
diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -838,6 +838,9 @@ class localrepository(repo.repository):
                         self.sjoin('phaseroots'))
         self.invalidate()
 
+        # Discard all cache entries to force reloading everything.
+        self._filecache.clear()
+
         parentgone = (parents[0] not in self.changelog.nodemap or
                       parents[1] not in self.changelog.nodemap)
         if parentgone:
@@ -1320,9 +1323,6 @@ class localrepository(repo.repository):
         # tag cache retrieval" case to work.
         self.invalidatecaches()
 
-        # Discard all cache entries to force reloading everything.
-        self._filecache.clear()
-
     def walk(self, match, node=None):
         '''
         walk recursively through the directory tree or a given
diff --git a/mercurial/patch.py b/mercurial/patch.py
--- a/mercurial/patch.py
+++ b/mercurial/patch.py
@@ -1345,8 +1345,17 @@ def _applydiff(ui, fp, patcher, backend,
         elif state == 'git':
             for gp in values:
                 path = pstrip(gp.oldpath)
-                data, mode = backend.getfile(path)
-                store.setfile(path, data, mode)
+                try:
+                    data, mode = backend.getfile(path)
+                except IOError, e:
+                    if e.errno != errno.ENOENT:
+                        raise
+                    # The error ignored here will trigger a getfile()
+                    # error in a place more appropriate for error
+                    # handling, and will not interrupt the patching
+                    # process.
+                else:
+                    store.setfile(path, data, mode)
         else:
             raise util.Abort(_('unsupported parser state: %s') % state)
 
diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -569,7 +569,7 @@ def revrange(repo, revs):
                 newrevs = set(xrange(start, end + step, step))
                 if seen:
                     newrevs.difference_update(seen)
-                    seen.union(newrevs)
+                    seen.update(newrevs)
                 else:
                     seen = newrevs
                 l.extend(sorted(newrevs, reverse=start > end))
diff --git a/tests/test-mq-missingfiles.t b/tests/test-mq-missingfiles.t
--- a/tests/test-mq-missingfiles.t
+++ b/tests/test-mq-missingfiles.t
@@ -73,6 +73,53 @@ Display rejections:
   +c
   +c
 
+Test missing renamed file
+
+  $ hg qpop
+  popping changeb
+  patch queue now empty
+  $ hg up -qC 0
+  $ echo a > a
+  $ hg mv b bb
+  $ python ../writelines.py bb 2 'b\n' 10 'a\n' 2 'c\n'
+  $ echo c > c
+  $ hg add a c
+  $ hg qnew changebb
+  $ hg qpop
+  popping changebb
+  patch queue now empty
+  $ hg up -qC 1
+  $ hg qpush
+  applying changebb
+  patching file bb
+  Hunk #1 FAILED at 0
+  Hunk #2 FAILED at 7
+  2 out of 2 hunks FAILED -- saving rejects to file bb.rej
+  b not tracked!
+  patch failed, unable to continue (try -v)
+  patch failed, rejects left in working dir
+  errors during apply, please fix and refresh changebb
+  [2]
+  $ cat a
+  a
+  $ cat c
+  c
+  $ cat bb.rej
+  --- bb
+  +++ bb
+  @@ -1,3 +1,5 @@
+  +b
+  +b
+   a
+   a
+   a
+  @@ -8,3 +10,5 @@
+   a
+   a
+   a
+  +c
+  +c
+
   $ cd ..